// Code generated by private/model/cli/gen-api/main.go. DO NOT EDIT.

package lexruntimeservice

import (
	"fmt"
	"io"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/awsutil"
	"github.com/aws/aws-sdk-go/aws/request"
	"github.com/aws/aws-sdk-go/aws/signer/v4"
	"github.com/aws/aws-sdk-go/private/protocol"
)

const opDeleteSession = "DeleteSession"

// DeleteSessionRequest generates a "aws/request.Request" representing the
// client's request for the DeleteSession operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See DeleteSession for more information on using the DeleteSession
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
//    // Example sending a request using the DeleteSessionRequest method.
//    req, resp := client.DeleteSessionRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/DeleteSession
func (c *LexRuntimeService) DeleteSessionRequest(input *DeleteSessionInput) (req *request.Request, output *DeleteSessionOutput) {
	op := &request.Operation{
		Name:       opDeleteSession,
		HTTPMethod: "DELETE",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/session",
	}

	if input == nil {
		input = &DeleteSessionInput{}
	}

	output = &DeleteSessionOutput{}
	req = c.newRequest(op, input, output)
	return
}

// DeleteSession API operation for Amazon Lex Runtime Service.
//
// Removes session information for a specified bot, alias, and user ID.
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation DeleteSession for usage and error information.
//
// Returned Error Types:
//   * NotFoundException
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * BadRequestException
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed, is still in progress, or contains unbuilt changes.
//
//   * LimitExceededException
//   Exceeded a limit.
//
//   * InternalFailureException
//   Internal service error. Retry the call.
//
//   * ConflictException
//   Two clients are using the same AWS account, Amazon Lex bot, and user ID.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/DeleteSession
func (c *LexRuntimeService) DeleteSession(input *DeleteSessionInput) (*DeleteSessionOutput, error) {
	req, out := c.DeleteSessionRequest(input)
	return out, req.Send()
}

// DeleteSessionWithContext is the same as DeleteSession with the addition of
// the ability to pass a context and additional request options.
//
// See DeleteSession for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) DeleteSessionWithContext(ctx aws.Context, input *DeleteSessionInput, opts ...request.Option) (*DeleteSessionOutput, error) {
	req, out := c.DeleteSessionRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

const opGetSession = "GetSession"

// GetSessionRequest generates a "aws/request.Request" representing the
// client's request for the GetSession operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See GetSession for more information on using the GetSession
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
//    // Example sending a request using the GetSessionRequest method.
//    req, resp := client.GetSessionRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/GetSession
func (c *LexRuntimeService) GetSessionRequest(input *GetSessionInput) (req *request.Request, output *GetSessionOutput) {
	op := &request.Operation{
		Name:       opGetSession,
		HTTPMethod: "GET",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/session/",
	}

	if input == nil {
		input = &GetSessionInput{}
	}

	output = &GetSessionOutput{}
	req = c.newRequest(op, input, output)
	return
}

// GetSession API operation for Amazon Lex Runtime Service.
//
// Returns session information for a specified bot, alias, and user ID.
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation GetSession for usage and error information.
//
// Returned Error Types:
//   * NotFoundException
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * BadRequestException
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed, is still in progress, or contains unbuilt changes.
//
//   * LimitExceededException
//   Exceeded a limit.
//
//   * InternalFailureException
//   Internal service error. Retry the call.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/GetSession
func (c *LexRuntimeService) GetSession(input *GetSessionInput) (*GetSessionOutput, error) {
	req, out := c.GetSessionRequest(input)
	return out, req.Send()
}

// GetSessionWithContext is the same as GetSession with the addition of
// the ability to pass a context and additional request options.
//
// See GetSession for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) GetSessionWithContext(ctx aws.Context, input *GetSessionInput, opts ...request.Option) (*GetSessionOutput, error) {
	req, out := c.GetSessionRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

const opPostContent = "PostContent"

// PostContentRequest generates a "aws/request.Request" representing the
// client's request for the PostContent operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See PostContent for more information on using the PostContent
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
//    // Example sending a request using the PostContentRequest method.
//    req, resp := client.PostContentRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostContent
func (c *LexRuntimeService) PostContentRequest(input *PostContentInput) (req *request.Request, output *PostContentOutput) {
	op := &request.Operation{
		Name:       opPostContent,
		HTTPMethod: "POST",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/content",
	}

	if input == nil {
		input = &PostContentInput{}
	}

	output = &PostContentOutput{}
	req = c.newRequest(op, input, output)
	req.Handlers.Sign.Remove(v4.SignRequestHandler)
	handler := v4.BuildNamedHandler("v4.CustomSignerHandler", v4.WithUnsignedPayload)
	req.Handlers.Sign.PushFrontNamed(handler)
	return
}

// PostContent API operation for Amazon Lex Runtime Service.
//
// Sends user input (text or speech) to Amazon Lex. Clients use this API to
// send text and audio requests to Amazon Lex at runtime. Amazon Lex interprets
// the user input using the machine learning model that it built for the bot.
//
// The PostContent operation supports audio input at 8kHz and 16kHz. You can
// use 8kHz audio to achieve higher speech recognition accuracy in telephone
// audio applications.
//
// In response, Amazon Lex returns the next message to convey to the user. Consider
// the following example messages:
//
//    * For a user input "I would like a pizza," Amazon Lex might return a response
//    with a message eliciting slot data (for example, PizzaSize): "What size
//    pizza would you like?".
//
//    * After the user provides all of the pizza order information, Amazon Lex
//    might return a response with a message to get user confirmation: "Order
//    the pizza?".
//
//    * After the user replies "Yes" to the confirmation prompt, Amazon Lex
//    might return a conclusion statement: "Thank you, your cheese pizza has
//    been ordered.".
//
// Not all Amazon Lex messages require a response from the user. For example,
// conclusion statements do not require a response. Some messages require only
// a yes or no response. In addition to the message, Amazon Lex provides additional
// context about the message in the response that you can use to enhance client
// behavior, such as displaying the appropriate client user interface. Consider
// the following examples:
//
//    * If the message is to elicit slot data, Amazon Lex returns the following
//    context information: x-amz-lex-dialog-state header set to ElicitSlot x-amz-lex-intent-name
//    header set to the intent name in the current context x-amz-lex-slot-to-elicit
//    header set to the slot name for which the message is eliciting information
//    x-amz-lex-slots header set to a map of slots configured for the intent
//    with their current values
//
//    * If the message is a confirmation prompt, the x-amz-lex-dialog-state
//    header is set to Confirmation and the x-amz-lex-slot-to-elicit header
//    is omitted.
//
//    * If the message is a clarification prompt configured for the intent,
//    indicating that the user intent is not understood, the x-amz-dialog-state
//    header is set to ElicitIntent and the x-amz-slot-to-elicit header is omitted.
//
// In addition, Amazon Lex also returns your application-specific sessionAttributes.
// For more information, see Managing Conversation Context (https://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html).
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation PostContent for usage and error information.
//
// Returned Error Types:
//   * NotFoundException
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * BadRequestException
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed, is still in progress, or contains unbuilt changes.
//
//   * LimitExceededException
//   Exceeded a limit.
//
//   * InternalFailureException
//   Internal service error. Retry the call.
//
//   * ConflictException
//   Two clients are using the same AWS account, Amazon Lex bot, and user ID.
//
//   * UnsupportedMediaTypeException
//   The Content-Type header (PostContent API) has an invalid value.
//
//   * NotAcceptableException
//   The accept header in the request does not have a valid value.
//
//   * RequestTimeoutException
//   The input speech is too long.
//
//   * DependencyFailedException
//   One of the dependencies, such as AWS Lambda or Amazon Polly, threw an exception.
//   For example,
//
//      * If Amazon Lex does not have sufficient permissions to call a Lambda
//      function.
//
//      * If a Lambda function takes longer than 30 seconds to execute.
//
//      * If a fulfillment Lambda function returns a Delegate dialog action without
//      removing any slot values.
//
//   * BadGatewayException
//   Either the Amazon Lex bot is still building, or one of the dependent services
//   (Amazon Polly, AWS Lambda) failed with an internal service error.
//
//   * LoopDetectedException
//   This exception is not used.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostContent
func (c *LexRuntimeService) PostContent(input *PostContentInput) (*PostContentOutput, error) {
	req, out := c.PostContentRequest(input)
	return out, req.Send()
}

// PostContentWithContext is the same as PostContent with the addition of
// the ability to pass a context and additional request options.
//
// See PostContent for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) PostContentWithContext(ctx aws.Context, input *PostContentInput, opts ...request.Option) (*PostContentOutput, error) {
	req, out := c.PostContentRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

const opPostText = "PostText"

// PostTextRequest generates a "aws/request.Request" representing the
// client's request for the PostText operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See PostText for more information on using the PostText
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
//    // Example sending a request using the PostTextRequest method.
//    req, resp := client.PostTextRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostText
func (c *LexRuntimeService) PostTextRequest(input *PostTextInput) (req *request.Request, output *PostTextOutput) {
	op := &request.Operation{
		Name:       opPostText,
		HTTPMethod: "POST",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/text",
	}

	if input == nil {
		input = &PostTextInput{}
	}

	output = &PostTextOutput{}
	req = c.newRequest(op, input, output)
	return
}

// PostText API operation for Amazon Lex Runtime Service.
//
// Sends user input to Amazon Lex. Client applications can use this API to send
// requests to Amazon Lex at runtime. Amazon Lex then interprets the user input
// using the machine learning model it built for the bot.
//
// In response, Amazon Lex returns the next message to convey to the user an
// optional responseCard to display. Consider the following example messages:
//
//    * For a user input "I would like a pizza", Amazon Lex might return a response
//    with a message eliciting slot data (for example, PizzaSize): "What size
//    pizza would you like?"
//
//    * After the user provides all of the pizza order information, Amazon Lex
//    might return a response with a message to obtain user confirmation "Proceed
//    with the pizza order?".
//
//    * After the user replies to a confirmation prompt with a "yes", Amazon
//    Lex might return a conclusion statement: "Thank you, your cheese pizza
//    has been ordered.".
//
// Not all Amazon Lex messages require a user response. For example, a conclusion
// statement does not require a response. Some messages require only a "yes"
// or "no" user response. In addition to the message, Amazon Lex provides additional
// context about the message in the response that you might use to enhance client
// behavior, for example, to display the appropriate client user interface.
// These are the slotToElicit, dialogState, intentName, and slots fields in
// the response. Consider the following examples:
//
//    * If the message is to elicit slot data, Amazon Lex returns the following
//    context information: dialogState set to ElicitSlot intentName set to the
//    intent name in the current context slotToElicit set to the slot name for
//    which the message is eliciting information slots set to a map of slots,
//    configured for the intent, with currently known values
//
//    * If the message is a confirmation prompt, the dialogState is set to ConfirmIntent
//    and SlotToElicit is set to null.
//
//    * If the message is a clarification prompt (configured for the intent)
//    that indicates that user intent is not understood, the dialogState is
//    set to ElicitIntent and slotToElicit is set to null.
//
// In addition, Amazon Lex also returns your application-specific sessionAttributes.
// For more information, see Managing Conversation Context (https://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html).
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation PostText for usage and error information.
//
// Returned Error Types:
//   * NotFoundException
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * BadRequestException
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed, is still in progress, or contains unbuilt changes.
//
//   * LimitExceededException
//   Exceeded a limit.
//
//   * InternalFailureException
//   Internal service error. Retry the call.
//
//   * ConflictException
//   Two clients are using the same AWS account, Amazon Lex bot, and user ID.
//
//   * DependencyFailedException
//   One of the dependencies, such as AWS Lambda or Amazon Polly, threw an exception.
//   For example,
//
//      * If Amazon Lex does not have sufficient permissions to call a Lambda
//      function.
//
//      * If a Lambda function takes longer than 30 seconds to execute.
//
//      * If a fulfillment Lambda function returns a Delegate dialog action without
//      removing any slot values.
//
//   * BadGatewayException
//   Either the Amazon Lex bot is still building, or one of the dependent services
//   (Amazon Polly, AWS Lambda) failed with an internal service error.
//
//   * LoopDetectedException
//   This exception is not used.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PostText
func (c *LexRuntimeService) PostText(input *PostTextInput) (*PostTextOutput, error) {
	req, out := c.PostTextRequest(input)
	return out, req.Send()
}

// PostTextWithContext is the same as PostText with the addition of
// the ability to pass a context and additional request options.
//
// See PostText for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) PostTextWithContext(ctx aws.Context, input *PostTextInput, opts ...request.Option) (*PostTextOutput, error) {
	req, out := c.PostTextRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

const opPutSession = "PutSession"

// PutSessionRequest generates a "aws/request.Request" representing the
// client's request for the PutSession operation. The "output" return
// value will be populated with the request's response once the request completes
// successfully.
//
// Use "Send" method on the returned Request to send the API call to the service.
// the "output" return value is not valid until after Send returns without error.
//
// See PutSession for more information on using the PutSession
// API call, and error handling.
//
// This method is useful when you want to inject custom logic or configuration
// into the SDK's request lifecycle. Such as custom headers, or retry logic.
//
//
//    // Example sending a request using the PutSessionRequest method.
//    req, resp := client.PutSessionRequest(params)
//
//    err := req.Send()
//    if err == nil { // resp is now filled
//        fmt.Println(resp)
//    }
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PutSession
func (c *LexRuntimeService) PutSessionRequest(input *PutSessionInput) (req *request.Request, output *PutSessionOutput) {
	op := &request.Operation{
		Name:       opPutSession,
		HTTPMethod: "POST",
		HTTPPath:   "/bot/{botName}/alias/{botAlias}/user/{userId}/session",
	}

	if input == nil {
		input = &PutSessionInput{}
	}

	output = &PutSessionOutput{}
	req = c.newRequest(op, input, output)
	return
}

// PutSession API operation for Amazon Lex Runtime Service.
//
// Creates a new session or modifies an existing session with an Amazon Lex
// bot. Use this operation to enable your application to set the state of the
// bot.
//
// For more information, see Managing Sessions (https://docs.aws.amazon.com/lex/latest/dg/how-session-api.html).
//
// Returns awserr.Error for service API and SDK errors. Use runtime type assertions
// with awserr.Error's Code and Message methods to get detailed information about
// the error.
//
// See the AWS API reference guide for Amazon Lex Runtime Service's
// API operation PutSession for usage and error information.
//
// Returned Error Types:
//   * NotFoundException
//   The resource (such as the Amazon Lex bot or an alias) that is referred to
//   is not found.
//
//   * BadRequestException
//   Request validation failed, there is no usable message in the context, or
//   the bot build failed, is still in progress, or contains unbuilt changes.
//
//   * LimitExceededException
//   Exceeded a limit.
//
//   * InternalFailureException
//   Internal service error. Retry the call.
//
//   * ConflictException
//   Two clients are using the same AWS account, Amazon Lex bot, and user ID.
//
//   * NotAcceptableException
//   The accept header in the request does not have a valid value.
//
//   * DependencyFailedException
//   One of the dependencies, such as AWS Lambda or Amazon Polly, threw an exception.
//   For example,
//
//      * If Amazon Lex does not have sufficient permissions to call a Lambda
//      function.
//
//      * If a Lambda function takes longer than 30 seconds to execute.
//
//      * If a fulfillment Lambda function returns a Delegate dialog action without
//      removing any slot values.
//
//   * BadGatewayException
//   Either the Amazon Lex bot is still building, or one of the dependent services
//   (Amazon Polly, AWS Lambda) failed with an internal service error.
//
// See also, https://docs.aws.amazon.com/goto/WebAPI/runtime.lex-2016-11-28/PutSession
func (c *LexRuntimeService) PutSession(input *PutSessionInput) (*PutSessionOutput, error) {
	req, out := c.PutSessionRequest(input)
	return out, req.Send()
}

// PutSessionWithContext is the same as PutSession with the addition of
// the ability to pass a context and additional request options.
//
// See PutSession for details on how to use this API operation.
//
// The context must be non-nil and will be used for request cancellation. If
// the context is nil a panic will occur. In the future the SDK may create
// sub-contexts for http.Requests. See https://golang.org/pkg/context/
// for more information on using Contexts.
func (c *LexRuntimeService) PutSessionWithContext(ctx aws.Context, input *PutSessionInput, opts ...request.Option) (*PutSessionOutput, error) {
	req, out := c.PutSessionRequest(input)
	req.SetContext(ctx)
	req.ApplyOptions(opts...)
	return out, req.Send()
}

// A context is a variable that contains information about the current state
// of the conversation between a user and Amazon Lex. Context can be set automatically
// by Amazon Lex when an intent is fulfilled, or it can be set at runtime using
// the PutContent, PutText, or PutSession operation.
type ActiveContext struct {
	_ struct{} `type:"structure"`

	// The name of the context.
	//
	// Name is a required field
	Name *string `locationName:"name" min:"1" type:"string" required:"true"`

	// State variables for the current context. You can use these values as default
	// values for slots in subsequent events.
	//
	// Parameters is a required field
	Parameters map[string]*string `locationName:"parameters" type:"map" required:"true"`

	// The length of time or number of turns that a context remains active.
	//
	// TimeToLive is a required field
	TimeToLive *ActiveContextTimeToLive `locationName:"timeToLive" type:"structure" required:"true"`
}

// String returns the string representation
func (s ActiveContext) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActiveContext) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *ActiveContext) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "ActiveContext"}
	if s.Name == nil {
		invalidParams.Add(request.NewErrParamRequired("Name"))
	}
	if s.Name != nil && len(*s.Name) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("Name", 1))
	}
	if s.Parameters == nil {
		invalidParams.Add(request.NewErrParamRequired("Parameters"))
	}
	if s.TimeToLive == nil {
		invalidParams.Add(request.NewErrParamRequired("TimeToLive"))
	}
	if s.TimeToLive != nil {
		if err := s.TimeToLive.Validate(); err != nil {
			invalidParams.AddNested("TimeToLive", err.(request.ErrInvalidParams))
		}
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetName sets the Name field's value.
func (s *ActiveContext) SetName(v string) *ActiveContext {
	s.Name = &v
	return s
}

// SetParameters sets the Parameters field's value.
func (s *ActiveContext) SetParameters(v map[string]*string) *ActiveContext {
	s.Parameters = v
	return s
}

// SetTimeToLive sets the TimeToLive field's value.
func (s *ActiveContext) SetTimeToLive(v *ActiveContextTimeToLive) *ActiveContext {
	s.TimeToLive = v
	return s
}

// The length of time or number of turns that a context remains active.
type ActiveContextTimeToLive struct {
	_ struct{} `type:"structure"`

	// The number of seconds that the context should be active after it is first
	// sent in a PostContent or PostText response. You can set the value between
	// 5 and 86,400 seconds (24 hours).
	TimeToLiveInSeconds *int64 `locationName:"timeToLiveInSeconds" min:"5" type:"integer"`

	// The number of conversation turns that the context should be active. A conversation
	// turn is one PostContent or PostText request and the corresponding response
	// from Amazon Lex.
	TurnsToLive *int64 `locationName:"turnsToLive" min:"1" type:"integer"`
}

// String returns the string representation
func (s ActiveContextTimeToLive) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ActiveContextTimeToLive) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *ActiveContextTimeToLive) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "ActiveContextTimeToLive"}
	if s.TimeToLiveInSeconds != nil && *s.TimeToLiveInSeconds < 5 {
		invalidParams.Add(request.NewErrParamMinValue("TimeToLiveInSeconds", 5))
	}
	if s.TurnsToLive != nil && *s.TurnsToLive < 1 {
		invalidParams.Add(request.NewErrParamMinValue("TurnsToLive", 1))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetTimeToLiveInSeconds sets the TimeToLiveInSeconds field's value.
func (s *ActiveContextTimeToLive) SetTimeToLiveInSeconds(v int64) *ActiveContextTimeToLive {
	s.TimeToLiveInSeconds = &v
	return s
}

// SetTurnsToLive sets the TurnsToLive field's value.
func (s *ActiveContextTimeToLive) SetTurnsToLive(v int64) *ActiveContextTimeToLive {
	s.TurnsToLive = &v
	return s
}

// Either the Amazon Lex bot is still building, or one of the dependent services
// (Amazon Polly, AWS Lambda) failed with an internal service error.
type BadGatewayException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"Message" type:"string"`
}

// String returns the string representation
func (s BadGatewayException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s BadGatewayException) GoString() string {
	return s.String()
}

func newErrorBadGatewayException(v protocol.ResponseMetadata) error {
	return &BadGatewayException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *BadGatewayException) Code() string {
	return "BadGatewayException"
}

// Message returns the exception's message.
func (s *BadGatewayException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *BadGatewayException) OrigErr() error {
	return nil
}

func (s *BadGatewayException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *BadGatewayException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *BadGatewayException) RequestID() string {
	return s.RespMetadata.RequestID
}

// Request validation failed, there is no usable message in the context, or
// the bot build failed, is still in progress, or contains unbuilt changes.
type BadRequestException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s BadRequestException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s BadRequestException) GoString() string {
	return s.String()
}

func newErrorBadRequestException(v protocol.ResponseMetadata) error {
	return &BadRequestException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *BadRequestException) Code() string {
	return "BadRequestException"
}

// Message returns the exception's message.
func (s *BadRequestException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *BadRequestException) OrigErr() error {
	return nil
}

func (s *BadRequestException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *BadRequestException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *BadRequestException) RequestID() string {
	return s.RespMetadata.RequestID
}

// Represents an option to be shown on the client platform (Facebook, Slack,
// etc.)
type Button struct {
	_ struct{} `type:"structure"`

	// Text that is visible to the user on the button.
	//
	// Text is a required field
	Text *string `locationName:"text" min:"1" type:"string" required:"true"`

	// The value sent to Amazon Lex when a user chooses the button. For example,
	// consider button text "NYC." When the user chooses the button, the value sent
	// can be "New York City."
	//
	// Value is a required field
	Value *string `locationName:"value" min:"1" type:"string" required:"true"`
}

// String returns the string representation
func (s Button) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s Button) GoString() string {
	return s.String()
}

// SetText sets the Text field's value.
func (s *Button) SetText(v string) *Button {
	s.Text = &v
	return s
}

// SetValue sets the Value field's value.
func (s *Button) SetValue(v string) *Button {
	s.Value = &v
	return s
}

// Two clients are using the same AWS account, Amazon Lex bot, and user ID.
type ConflictException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s ConflictException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ConflictException) GoString() string {
	return s.String()
}

func newErrorConflictException(v protocol.ResponseMetadata) error {
	return &ConflictException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *ConflictException) Code() string {
	return "ConflictException"
}

// Message returns the exception's message.
func (s *ConflictException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *ConflictException) OrigErr() error {
	return nil
}

func (s *ConflictException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *ConflictException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *ConflictException) RequestID() string {
	return s.RespMetadata.RequestID
}

type DeleteSessionInput struct {
	_ struct{} `type:"structure"`

	// The alias in use for the bot that contains the session data.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// The name of the bot that contains the session data.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// The identifier of the user associated with the session data.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s DeleteSessionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DeleteSessionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DeleteSessionInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "DeleteSessionInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotAlias != nil && len(*s.BotAlias) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotAlias", 1))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.BotName != nil && len(*s.BotName) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotName", 1))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetBotAlias sets the BotAlias field's value.
func (s *DeleteSessionInput) SetBotAlias(v string) *DeleteSessionInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *DeleteSessionInput) SetBotName(v string) *DeleteSessionInput {
	s.BotName = &v
	return s
}

// SetUserId sets the UserId field's value.
func (s *DeleteSessionInput) SetUserId(v string) *DeleteSessionInput {
	s.UserId = &v
	return s
}

type DeleteSessionOutput struct {
	_ struct{} `type:"structure"`

	// The alias in use for the bot associated with the session data.
	BotAlias *string `locationName:"botAlias" type:"string"`

	// The name of the bot associated with the session data.
	BotName *string `locationName:"botName" type:"string"`

	// The unique identifier for the session.
	SessionId *string `locationName:"sessionId" type:"string"`

	// The ID of the client application user.
	UserId *string `locationName:"userId" min:"2" type:"string"`
}

// String returns the string representation
func (s DeleteSessionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DeleteSessionOutput) GoString() string {
	return s.String()
}

// SetBotAlias sets the BotAlias field's value.
func (s *DeleteSessionOutput) SetBotAlias(v string) *DeleteSessionOutput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *DeleteSessionOutput) SetBotName(v string) *DeleteSessionOutput {
	s.BotName = &v
	return s
}

// SetSessionId sets the SessionId field's value.
func (s *DeleteSessionOutput) SetSessionId(v string) *DeleteSessionOutput {
	s.SessionId = &v
	return s
}

// SetUserId sets the UserId field's value.
func (s *DeleteSessionOutput) SetUserId(v string) *DeleteSessionOutput {
	s.UserId = &v
	return s
}

// One of the dependencies, such as AWS Lambda or Amazon Polly, threw an exception.
// For example,
//
//    * If Amazon Lex does not have sufficient permissions to call a Lambda
//    function.
//
//    * If a Lambda function takes longer than 30 seconds to execute.
//
//    * If a fulfillment Lambda function returns a Delegate dialog action without
//    removing any slot values.
type DependencyFailedException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"Message" type:"string"`
}

// String returns the string representation
func (s DependencyFailedException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DependencyFailedException) GoString() string {
	return s.String()
}

func newErrorDependencyFailedException(v protocol.ResponseMetadata) error {
	return &DependencyFailedException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *DependencyFailedException) Code() string {
	return "DependencyFailedException"
}

// Message returns the exception's message.
func (s *DependencyFailedException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *DependencyFailedException) OrigErr() error {
	return nil
}

func (s *DependencyFailedException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *DependencyFailedException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *DependencyFailedException) RequestID() string {
	return s.RespMetadata.RequestID
}

// Describes the next action that the bot should take in its interaction with
// the user and provides information about the context in which the action takes
// place. Use the DialogAction data type to set the interaction to a specific
// state, or to return the interaction to a previous state.
type DialogAction struct {
	_ struct{} `type:"structure"`

	// The fulfillment state of the intent. The possible values are:
	//
	//    * Failed - The Lambda function associated with the intent failed to fulfill
	//    the intent.
	//
	//    * Fulfilled - The intent has fulfilled by the Lambda function associated
	//    with the intent.
	//
	//    * ReadyForFulfillment - All of the information necessary for the intent
	//    is present and the intent ready to be fulfilled by the client application.
	FulfillmentState *string `locationName:"fulfillmentState" type:"string" enum:"FulfillmentState"`

	// The name of the intent.
	IntentName *string `locationName:"intentName" type:"string"`

	// The message that should be shown to the user. If you don't specify a message,
	// Amazon Lex will use the message configured for the intent.
	Message *string `locationName:"message" min:"1" type:"string" sensitive:"true"`

	//    * PlainText - The message contains plain UTF-8 text.
	//
	//    * CustomPayload - The message is a custom format for the client.
	//
	//    * SSML - The message contains text formatted for voice output.
	//
	//    * Composite - The message contains an escaped JSON object containing one
	//    or more messages. For more information, see Message Groups (https://docs.aws.amazon.com/lex/latest/dg/howitworks-manage-prompts.html).
	MessageFormat *string `locationName:"messageFormat" type:"string" enum:"MessageFormatType"`

	// The name of the slot that should be elicited from the user.
	SlotToElicit *string `locationName:"slotToElicit" type:"string"`

	// Map of the slots that have been gathered and their values.
	Slots map[string]*string `locationName:"slots" type:"map" sensitive:"true"`

	// The next action that the bot should take in its interaction with the user.
	// The possible values are:
	//
	//    * ConfirmIntent - The next action is asking the user if the intent is
	//    complete and ready to be fulfilled. This is a yes/no question such as
	//    "Place the order?"
	//
	//    * Close - Indicates that the there will not be a response from the user.
	//    For example, the statement "Your order has been placed" does not require
	//    a response.
	//
	//    * Delegate - The next action is determined by Amazon Lex.
	//
	//    * ElicitIntent - The next action is to determine the intent that the user
	//    wants to fulfill.
	//
	//    * ElicitSlot - The next action is to elicit a slot value from the user.
	//
	// Type is a required field
	Type *string `locationName:"type" type:"string" required:"true" enum:"DialogActionType"`
}

// String returns the string representation
func (s DialogAction) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s DialogAction) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *DialogAction) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "DialogAction"}
	if s.Message != nil && len(*s.Message) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("Message", 1))
	}
	if s.Type == nil {
		invalidParams.Add(request.NewErrParamRequired("Type"))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetFulfillmentState sets the FulfillmentState field's value.
func (s *DialogAction) SetFulfillmentState(v string) *DialogAction {
	s.FulfillmentState = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *DialogAction) SetIntentName(v string) *DialogAction {
	s.IntentName = &v
	return s
}

// SetMessage sets the Message field's value.
func (s *DialogAction) SetMessage(v string) *DialogAction {
	s.Message = &v
	return s
}

// SetMessageFormat sets the MessageFormat field's value.
func (s *DialogAction) SetMessageFormat(v string) *DialogAction {
	s.MessageFormat = &v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *DialogAction) SetSlotToElicit(v string) *DialogAction {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *DialogAction) SetSlots(v map[string]*string) *DialogAction {
	s.Slots = v
	return s
}

// SetType sets the Type field's value.
func (s *DialogAction) SetType(v string) *DialogAction {
	s.Type = &v
	return s
}

// Represents an option rendered to the user when a prompt is shown. It could
// be an image, a button, a link, or text.
type GenericAttachment struct {
	_ struct{} `type:"structure"`

	// The URL of an attachment to the response card.
	AttachmentLinkUrl *string `locationName:"attachmentLinkUrl" min:"1" type:"string"`

	// The list of options to show to the user.
	Buttons []*Button `locationName:"buttons" type:"list"`

	// The URL of an image that is displayed to the user.
	ImageUrl *string `locationName:"imageUrl" min:"1" type:"string"`

	// The subtitle shown below the title.
	SubTitle *string `locationName:"subTitle" min:"1" type:"string"`

	// The title of the option.
	Title *string `locationName:"title" min:"1" type:"string"`
}

// String returns the string representation
func (s GenericAttachment) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GenericAttachment) GoString() string {
	return s.String()
}

// SetAttachmentLinkUrl sets the AttachmentLinkUrl field's value.
func (s *GenericAttachment) SetAttachmentLinkUrl(v string) *GenericAttachment {
	s.AttachmentLinkUrl = &v
	return s
}

// SetButtons sets the Buttons field's value.
func (s *GenericAttachment) SetButtons(v []*Button) *GenericAttachment {
	s.Buttons = v
	return s
}

// SetImageUrl sets the ImageUrl field's value.
func (s *GenericAttachment) SetImageUrl(v string) *GenericAttachment {
	s.ImageUrl = &v
	return s
}

// SetSubTitle sets the SubTitle field's value.
func (s *GenericAttachment) SetSubTitle(v string) *GenericAttachment {
	s.SubTitle = &v
	return s
}

// SetTitle sets the Title field's value.
func (s *GenericAttachment) SetTitle(v string) *GenericAttachment {
	s.Title = &v
	return s
}

type GetSessionInput struct {
	_ struct{} `type:"structure"`

	// The alias in use for the bot that contains the session data.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// The name of the bot that contains the session data.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// A string used to filter the intents returned in the recentIntentSummaryView
	// structure.
	//
	// When you specify a filter, only intents with their checkpointLabel field
	// set to that string are returned.
	CheckpointLabelFilter *string `location:"querystring" locationName:"checkpointLabelFilter" min:"1" type:"string"`

	// The ID of the client application user. Amazon Lex uses this to identify a
	// user's conversation with your bot.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s GetSessionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GetSessionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *GetSessionInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "GetSessionInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotAlias != nil && len(*s.BotAlias) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotAlias", 1))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.BotName != nil && len(*s.BotName) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotName", 1))
	}
	if s.CheckpointLabelFilter != nil && len(*s.CheckpointLabelFilter) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("CheckpointLabelFilter", 1))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetBotAlias sets the BotAlias field's value.
func (s *GetSessionInput) SetBotAlias(v string) *GetSessionInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *GetSessionInput) SetBotName(v string) *GetSessionInput {
	s.BotName = &v
	return s
}

// SetCheckpointLabelFilter sets the CheckpointLabelFilter field's value.
func (s *GetSessionInput) SetCheckpointLabelFilter(v string) *GetSessionInput {
	s.CheckpointLabelFilter = &v
	return s
}

// SetUserId sets the UserId field's value.
func (s *GetSessionInput) SetUserId(v string) *GetSessionInput {
	s.UserId = &v
	return s
}

type GetSessionOutput struct {
	_ struct{} `type:"structure"`

	// A list of active contexts for the session. A context can be set when an intent
	// is fulfilled or by calling the PostContent, PostText, or PutSession operation.
	//
	// You can use a context to control the intents that can follow up an intent,
	// or to modify the operation of your application.
	ActiveContexts []*ActiveContext `locationName:"activeContexts" type:"list" sensitive:"true"`

	// Describes the current state of the bot.
	DialogAction *DialogAction `locationName:"dialogAction" type:"structure"`

	// An array of information about the intents used in the session. The array
	// can contain a maximum of three summaries. If more than three intents are
	// used in the session, the recentIntentSummaryView operation contains information
	// about the last three intents used.
	//
	// If you set the checkpointLabelFilter parameter in the request, the array
	// contains only the intents with the specified label.
	RecentIntentSummaryView []*IntentSummary `locationName:"recentIntentSummaryView" type:"list"`

	// Map of key/value pairs representing the session-specific context information.
	// It contains application information passed between Amazon Lex and a client
	// application.
	SessionAttributes map[string]*string `locationName:"sessionAttributes" type:"map" sensitive:"true"`

	// A unique identifier for the session.
	SessionId *string `locationName:"sessionId" type:"string"`
}

// String returns the string representation
func (s GetSessionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s GetSessionOutput) GoString() string {
	return s.String()
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *GetSessionOutput) SetActiveContexts(v []*ActiveContext) *GetSessionOutput {
	s.ActiveContexts = v
	return s
}

// SetDialogAction sets the DialogAction field's value.
func (s *GetSessionOutput) SetDialogAction(v *DialogAction) *GetSessionOutput {
	s.DialogAction = v
	return s
}

// SetRecentIntentSummaryView sets the RecentIntentSummaryView field's value.
func (s *GetSessionOutput) SetRecentIntentSummaryView(v []*IntentSummary) *GetSessionOutput {
	s.RecentIntentSummaryView = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *GetSessionOutput) SetSessionAttributes(v map[string]*string) *GetSessionOutput {
	s.SessionAttributes = v
	return s
}

// SetSessionId sets the SessionId field's value.
func (s *GetSessionOutput) SetSessionId(v string) *GetSessionOutput {
	s.SessionId = &v
	return s
}

// Provides a score that indicates the confidence that Amazon Lex has that an
// intent is the one that satisfies the user's intent.
type IntentConfidence struct {
	_ struct{} `type:"structure"`

	// A score that indicates how confident Amazon Lex is that an intent satisfies
	// the user's intent. Ranges between 0.00 and 1.00. Higher scores indicate higher
	// confidence.
	Score *float64 `locationName:"score" type:"double"`
}

// String returns the string representation
func (s IntentConfidence) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s IntentConfidence) GoString() string {
	return s.String()
}

// SetScore sets the Score field's value.
func (s *IntentConfidence) SetScore(v float64) *IntentConfidence {
	s.Score = &v
	return s
}

// Provides information about the state of an intent. You can use this information
// to get the current state of an intent so that you can process the intent,
// or so that you can return the intent to its previous state.
type IntentSummary struct {
	_ struct{} `type:"structure"`

	// A user-defined label that identifies a particular intent. You can use this
	// label to return to a previous intent.
	//
	// Use the checkpointLabelFilter parameter of the GetSessionRequest operation
	// to filter the intents returned by the operation to those with only the specified
	// label.
	CheckpointLabel *string `locationName:"checkpointLabel" min:"1" type:"string"`

	// The status of the intent after the user responds to the confirmation prompt.
	// If the user confirms the intent, Amazon Lex sets this field to Confirmed.
	// If the user denies the intent, Amazon Lex sets this value to Denied. The
	// possible values are:
	//
	//    * Confirmed - The user has responded "Yes" to the confirmation prompt,
	//    confirming that the intent is complete and that it is ready to be fulfilled.
	//
	//    * Denied - The user has responded "No" to the confirmation prompt.
	//
	//    * None - The user has never been prompted for confirmation; or, the user
	//    was prompted but did not confirm or deny the prompt.
	ConfirmationStatus *string `locationName:"confirmationStatus" type:"string" enum:"ConfirmationStatus"`

	// The next action that the bot should take in its interaction with the user.
	// The possible values are:
	//
	//    * ConfirmIntent - The next action is asking the user if the intent is
	//    complete and ready to be fulfilled. This is a yes/no question such as
	//    "Place the order?"
	//
	//    * Close - Indicates that the there will not be a response from the user.
	//    For example, the statement "Your order has been placed" does not require
	//    a response.
	//
	//    * ElicitIntent - The next action is to determine the intent that the user
	//    wants to fulfill.
	//
	//    * ElicitSlot - The next action is to elicit a slot value from the user.
	//
	// DialogActionType is a required field
	DialogActionType *string `locationName:"dialogActionType" type:"string" required:"true" enum:"DialogActionType"`

	// The fulfillment state of the intent. The possible values are:
	//
	//    * Failed - The Lambda function associated with the intent failed to fulfill
	//    the intent.
	//
	//    * Fulfilled - The intent has fulfilled by the Lambda function associated
	//    with the intent.
	//
	//    * ReadyForFulfillment - All of the information necessary for the intent
	//    is present and the intent ready to be fulfilled by the client application.
	FulfillmentState *string `locationName:"fulfillmentState" type:"string" enum:"FulfillmentState"`

	// The name of the intent.
	IntentName *string `locationName:"intentName" type:"string"`

	// The next slot to elicit from the user. If there is not slot to elicit, the
	// field is blank.
	SlotToElicit *string `locationName:"slotToElicit" type:"string"`

	// Map of the slots that have been gathered and their values.
	Slots map[string]*string `locationName:"slots" type:"map" sensitive:"true"`
}

// String returns the string representation
func (s IntentSummary) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s IntentSummary) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *IntentSummary) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "IntentSummary"}
	if s.CheckpointLabel != nil && len(*s.CheckpointLabel) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("CheckpointLabel", 1))
	}
	if s.DialogActionType == nil {
		invalidParams.Add(request.NewErrParamRequired("DialogActionType"))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetCheckpointLabel sets the CheckpointLabel field's value.
func (s *IntentSummary) SetCheckpointLabel(v string) *IntentSummary {
	s.CheckpointLabel = &v
	return s
}

// SetConfirmationStatus sets the ConfirmationStatus field's value.
func (s *IntentSummary) SetConfirmationStatus(v string) *IntentSummary {
	s.ConfirmationStatus = &v
	return s
}

// SetDialogActionType sets the DialogActionType field's value.
func (s *IntentSummary) SetDialogActionType(v string) *IntentSummary {
	s.DialogActionType = &v
	return s
}

// SetFulfillmentState sets the FulfillmentState field's value.
func (s *IntentSummary) SetFulfillmentState(v string) *IntentSummary {
	s.FulfillmentState = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *IntentSummary) SetIntentName(v string) *IntentSummary {
	s.IntentName = &v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *IntentSummary) SetSlotToElicit(v string) *IntentSummary {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *IntentSummary) SetSlots(v map[string]*string) *IntentSummary {
	s.Slots = v
	return s
}

// Internal service error. Retry the call.
type InternalFailureException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s InternalFailureException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s InternalFailureException) GoString() string {
	return s.String()
}

func newErrorInternalFailureException(v protocol.ResponseMetadata) error {
	return &InternalFailureException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *InternalFailureException) Code() string {
	return "InternalFailureException"
}

// Message returns the exception's message.
func (s *InternalFailureException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *InternalFailureException) OrigErr() error {
	return nil
}

func (s *InternalFailureException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *InternalFailureException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *InternalFailureException) RequestID() string {
	return s.RespMetadata.RequestID
}

// Exceeded a limit.
type LimitExceededException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`

	RetryAfterSeconds *string `location:"header" locationName:"Retry-After" type:"string"`
}

// String returns the string representation
func (s LimitExceededException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LimitExceededException) GoString() string {
	return s.String()
}

func newErrorLimitExceededException(v protocol.ResponseMetadata) error {
	return &LimitExceededException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *LimitExceededException) Code() string {
	return "LimitExceededException"
}

// Message returns the exception's message.
func (s *LimitExceededException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *LimitExceededException) OrigErr() error {
	return nil
}

func (s *LimitExceededException) Error() string {
	return fmt.Sprintf("%s: %s\n%s", s.Code(), s.Message(), s.String())
}

// Status code returns the HTTP status code for the request's response error.
func (s *LimitExceededException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *LimitExceededException) RequestID() string {
	return s.RespMetadata.RequestID
}

// This exception is not used.
type LoopDetectedException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"Message" type:"string"`
}

// String returns the string representation
func (s LoopDetectedException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s LoopDetectedException) GoString() string {
	return s.String()
}

func newErrorLoopDetectedException(v protocol.ResponseMetadata) error {
	return &LoopDetectedException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *LoopDetectedException) Code() string {
	return "LoopDetectedException"
}

// Message returns the exception's message.
func (s *LoopDetectedException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *LoopDetectedException) OrigErr() error {
	return nil
}

func (s *LoopDetectedException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *LoopDetectedException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *LoopDetectedException) RequestID() string {
	return s.RespMetadata.RequestID
}

// The accept header in the request does not have a valid value.
type NotAcceptableException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s NotAcceptableException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s NotAcceptableException) GoString() string {
	return s.String()
}

func newErrorNotAcceptableException(v protocol.ResponseMetadata) error {
	return &NotAcceptableException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *NotAcceptableException) Code() string {
	return "NotAcceptableException"
}

// Message returns the exception's message.
func (s *NotAcceptableException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *NotAcceptableException) OrigErr() error {
	return nil
}

func (s *NotAcceptableException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *NotAcceptableException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *NotAcceptableException) RequestID() string {
	return s.RespMetadata.RequestID
}

// The resource (such as the Amazon Lex bot or an alias) that is referred to
// is not found.
type NotFoundException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s NotFoundException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s NotFoundException) GoString() string {
	return s.String()
}

func newErrorNotFoundException(v protocol.ResponseMetadata) error {
	return &NotFoundException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *NotFoundException) Code() string {
	return "NotFoundException"
}

// Message returns the exception's message.
func (s *NotFoundException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *NotFoundException) OrigErr() error {
	return nil
}

func (s *NotFoundException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *NotFoundException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *NotFoundException) RequestID() string {
	return s.RespMetadata.RequestID
}

type PostContentInput struct {
	_ struct{} `type:"structure" payload:"InputStream"`

	// You pass this value as the Accept HTTP header.
	//
	// The message Amazon Lex returns in the response can be either text or speech
	// based on the Accept HTTP header value in the request.
	//
	//    * If the value is text/plain; charset=utf-8, Amazon Lex returns text in
	//    the response.
	//
	//    * If the value begins with audio/, Amazon Lex returns speech in the response.
	//    Amazon Lex uses Amazon Polly to generate the speech (using the configuration
	//    you specified in the Accept header). For example, if you specify audio/mpeg
	//    as the value, Amazon Lex returns speech in the MPEG format.
	//
	//    * If the value is audio/pcm, the speech returned is audio/pcm in 16-bit,
	//    little endian format.
	//
	//    * The following are the accepted values: audio/mpeg audio/ogg audio/pcm
	//    text/plain; charset=utf-8 audio/* (defaults to mpeg)
	Accept *string `location:"header" locationName:"Accept" type:"string"`

	// A list of contexts active for the request. A context can be activated when
	// a previous intent is fulfilled, or by including the context in the request,
	//
	// If you don't specify a list of contexts, Amazon Lex will use the current
	// list of contexts for the session. If you specify an empty list, all contexts
	// for the session are cleared.
	ActiveContexts aws.JSONValue `location:"header" locationName:"x-amz-lex-active-contexts" type:"jsonvalue"`

	// Alias of the Amazon Lex bot.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// Name of the Amazon Lex bot.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// You pass this value as the Content-Type HTTP header.
	//
	// Indicates the audio format or text. The header value must start with one
	// of the following prefixes:
	//
	//    * PCM format, audio data must be in little-endian byte order. audio/l16;
	//    rate=16000; channels=1 audio/x-l16; sample-rate=16000; channel-count=1
	//    audio/lpcm; sample-rate=8000; sample-size-bits=16; channel-count=1; is-big-endian=false
	//
	//    * Opus format audio/x-cbr-opus-with-preamble; preamble-size=0; bit-rate=256000;
	//    frame-size-milliseconds=4
	//
	//    * Text format text/plain; charset=utf-8
	//
	// ContentType is a required field
	ContentType *string `location:"header" locationName:"Content-Type" type:"string" required:"true"`

	// User input in PCM or Opus audio format or text format as described in the
	// Content-Type HTTP header.
	//
	// You can stream audio data to Amazon Lex or you can create a local buffer
	// that captures all of the audio data before sending. In general, you get better
	// performance if you stream audio data rather than buffering the data locally.
	//
	// To use an non-seekable io.Reader for this request wrap the io.Reader with
	// "aws.ReadSeekCloser". The SDK will not retry request errors for non-seekable
	// readers. This will allow the SDK to send the reader's payload as chunked
	// transfer encoding.
	//
	// InputStream is a required field
	InputStream io.ReadSeeker `locationName:"inputStream" type:"blob" required:"true"`

	// You pass this value as the x-amz-lex-request-attributes HTTP header.
	//
	// Request-specific information passed between Amazon Lex and a client application.
	// The value must be a JSON serialized and base64 encoded map with string keys
	// and values. The total size of the requestAttributes and sessionAttributes
	// headers is limited to 12 KB.
	//
	// The namespace x-amz-lex: is reserved for special attributes. Don't create
	// any request attributes with the prefix x-amz-lex:.
	//
	// For more information, see Setting Request Attributes (https://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html#context-mgmt-request-attribs).
	RequestAttributes aws.JSONValue `location:"header" locationName:"x-amz-lex-request-attributes" type:"jsonvalue"`

	// You pass this value as the x-amz-lex-session-attributes HTTP header.
	//
	// Application-specific information passed between Amazon Lex and a client application.
	// The value must be a JSON serialized and base64 encoded map with string keys
	// and values. The total size of the sessionAttributes and requestAttributes
	// headers is limited to 12 KB.
	//
	// For more information, see Setting Session Attributes (https://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html#context-mgmt-session-attribs).
	SessionAttributes aws.JSONValue `location:"header" locationName:"x-amz-lex-session-attributes" type:"jsonvalue"`

	// The ID of the client application user. Amazon Lex uses this to identify a
	// user's conversation with your bot. At runtime, each request must contain
	// the userID field.
	//
	// To decide the user ID to use for your application, consider the following
	// factors.
	//
	//    * The userID field must not contain any personally identifiable information
	//    of the user, for example, name, personal identification numbers, or other
	//    end user personal information.
	//
	//    * If you want a user to start a conversation on one device and continue
	//    on another device, use a user-specific identifier.
	//
	//    * If you want the same user to be able to have two independent conversations
	//    on two different devices, choose a device-specific identifier.
	//
	//    * A user can't have two independent conversations with two different versions
	//    of the same bot. For example, a user can't have a conversation with the
	//    PROD and BETA versions of the same bot. If you anticipate that a user
	//    will need to have conversation with two different versions, for example,
	//    while testing, include the bot alias in the user ID to separate the two
	//    conversations.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s PostContentInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostContentInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *PostContentInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "PostContentInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotAlias != nil && len(*s.BotAlias) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotAlias", 1))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.BotName != nil && len(*s.BotName) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotName", 1))
	}
	if s.ContentType == nil {
		invalidParams.Add(request.NewErrParamRequired("ContentType"))
	}
	if s.InputStream == nil {
		invalidParams.Add(request.NewErrParamRequired("InputStream"))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetAccept sets the Accept field's value.
func (s *PostContentInput) SetAccept(v string) *PostContentInput {
	s.Accept = &v
	return s
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *PostContentInput) SetActiveContexts(v aws.JSONValue) *PostContentInput {
	s.ActiveContexts = v
	return s
}

// SetBotAlias sets the BotAlias field's value.
func (s *PostContentInput) SetBotAlias(v string) *PostContentInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *PostContentInput) SetBotName(v string) *PostContentInput {
	s.BotName = &v
	return s
}

// SetContentType sets the ContentType field's value.
func (s *PostContentInput) SetContentType(v string) *PostContentInput {
	s.ContentType = &v
	return s
}

// SetInputStream sets the InputStream field's value.
func (s *PostContentInput) SetInputStream(v io.ReadSeeker) *PostContentInput {
	s.InputStream = v
	return s
}

// SetRequestAttributes sets the RequestAttributes field's value.
func (s *PostContentInput) SetRequestAttributes(v aws.JSONValue) *PostContentInput {
	s.RequestAttributes = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostContentInput) SetSessionAttributes(v aws.JSONValue) *PostContentInput {
	s.SessionAttributes = v
	return s
}

// SetUserId sets the UserId field's value.
func (s *PostContentInput) SetUserId(v string) *PostContentInput {
	s.UserId = &v
	return s
}

type PostContentOutput struct {
	_ struct{} `type:"structure" payload:"AudioStream"`

	// A list of active contexts for the session. A context can be set when an intent
	// is fulfilled or by calling the PostContent, PostText, or PutSession operation.
	//
	// You can use a context to control the intents that can follow up an intent,
	// or to modify the operation of your application.
	ActiveContexts aws.JSONValue `location:"header" locationName:"x-amz-lex-active-contexts" type:"jsonvalue"`

	// One to four alternative intents that may be applicable to the user's intent.
	//
	// Each alternative includes a score that indicates how confident Amazon Lex
	// is that the intent matches the user's intent. The intents are sorted by the
	// confidence score.
	AlternativeIntents aws.JSONValue `location:"header" locationName:"x-amz-lex-alternative-intents" type:"jsonvalue"`

	// The prompt (or statement) to convey to the user. This is based on the bot
	// configuration and context. For example, if Amazon Lex did not understand
	// the user intent, it sends the clarificationPrompt configured for the bot.
	// If the intent requires confirmation before taking the fulfillment action,
	// it sends the confirmationPrompt. Another example: Suppose that the Lambda
	// function successfully fulfilled the intent, and sent a message to convey
	// to the user. Then Amazon Lex sends that message in the response.
	AudioStream io.ReadCloser `locationName:"audioStream" type:"blob"`

	// The version of the bot that responded to the conversation. You can use this
	// information to help determine if one version of a bot is performing better
	// than another version.
	BotVersion *string `location:"header" locationName:"x-amz-lex-bot-version" min:"1" type:"string"`

	// Content type as specified in the Accept HTTP header in the request.
	ContentType *string `location:"header" locationName:"Content-Type" type:"string"`

	// Identifies the current state of the user interaction. Amazon Lex returns
	// one of the following values as dialogState. The client can optionally use
	// this information to customize the user interface.
	//
	//    * ElicitIntent - Amazon Lex wants to elicit the user's intent. Consider
	//    the following examples: For example, a user might utter an intent ("I
	//    want to order a pizza"). If Amazon Lex cannot infer the user intent from
	//    this utterance, it will return this dialog state.
	//
	//    * ConfirmIntent - Amazon Lex is expecting a "yes" or "no" response. For
	//    example, Amazon Lex wants user confirmation before fulfilling an intent.
	//    Instead of a simple "yes" or "no" response, a user might respond with
	//    additional information. For example, "yes, but make it a thick crust pizza"
	//    or "no, I want to order a drink." Amazon Lex can process such additional
	//    information (in these examples, update the crust type slot or change the
	//    intent from OrderPizza to OrderDrink).
	//
	//    * ElicitSlot - Amazon Lex is expecting the value of a slot for the current
	//    intent. For example, suppose that in the response Amazon Lex sends this
	//    message: "What size pizza would you like?". A user might reply with the
	//    slot value (e.g., "medium"). The user might also provide additional information
	//    in the response (e.g., "medium thick crust pizza"). Amazon Lex can process
	//    such additional information appropriately.
	//
	//    * Fulfilled - Conveys that the Lambda function has successfully fulfilled
	//    the intent.
	//
	//    * ReadyForFulfillment - Conveys that the client has to fulfill the request.
	//
	//    * Failed - Conveys that the conversation with the user failed. This can
	//    happen for various reasons, including that the user does not provide an
	//    appropriate response to prompts from the service (you can configure how
	//    many times Amazon Lex can prompt a user for specific information), or
	//    if the Lambda function fails to fulfill the intent.
	DialogState *string `location:"header" locationName:"x-amz-lex-dialog-state" type:"string" enum:"DialogState"`

	// The text used to process the request.
	//
	// If the input was an audio stream, the inputTranscript field contains the
	// text extracted from the audio stream. This is the text that is actually processed
	// to recognize intents and slot values. You can use this information to determine
	// if Amazon Lex is correctly processing the audio that you send.
	InputTranscript *string `location:"header" locationName:"x-amz-lex-input-transcript" type:"string"`

	// Current user intent that Amazon Lex is aware of.
	IntentName *string `location:"header" locationName:"x-amz-lex-intent-name" type:"string"`

	// The message to convey to the user. The message can come from the bot's configuration
	// or from a Lambda function.
	//
	// If the intent is not configured with a Lambda function, or if the Lambda
	// function returned Delegate as the dialogAction.type in its response, Amazon
	// Lex decides on the next course of action and selects an appropriate message
	// from the bot's configuration based on the current interaction context. For
	// example, if Amazon Lex isn't able to understand user input, it uses a clarification
	// prompt message.
	//
	// When you create an intent you can assign messages to groups. When messages
	// are assigned to groups Amazon Lex returns one message from each group in
	// the response. The message field is an escaped JSON string containing the
	// messages. For more information about the structure of the JSON string returned,
	// see msg-prompts-formats.
	//
	// If the Lambda function returns a message, Amazon Lex passes it to the client
	// in its response.
	Message *string `location:"header" locationName:"x-amz-lex-message" min:"1" type:"string" sensitive:"true"`

	// The format of the response message. One of the following values:
	//
	//    * PlainText - The message contains plain UTF-8 text.
	//
	//    * CustomPayload - The message is a custom format for the client.
	//
	//    * SSML - The message contains text formatted for voice output.
	//
	//    * Composite - The message contains an escaped JSON object containing one
	//    or more messages from the groups that messages were assigned to when the
	//    intent was created.
	MessageFormat *string `location:"header" locationName:"x-amz-lex-message-format" type:"string" enum:"MessageFormatType"`

	// Provides a score that indicates how confident Amazon Lex is that the returned
	// intent is the one that matches the user's intent. The score is between 0.0
	// and 1.0.
	//
	// The score is a relative score, not an absolute score. The score may change
	// based on improvements to Amazon Lex.
	NluIntentConfidence aws.JSONValue `location:"header" locationName:"x-amz-lex-nlu-intent-confidence" type:"jsonvalue"`

	// The sentiment expressed in an utterance.
	//
	// When the bot is configured to send utterances to Amazon Comprehend for sentiment
	// analysis, this field contains the result of the analysis.
	SentimentResponse *string `location:"header" locationName:"x-amz-lex-sentiment" type:"string"`

	// Map of key/value pairs representing the session-specific context information.
	SessionAttributes aws.JSONValue `location:"header" locationName:"x-amz-lex-session-attributes" type:"jsonvalue"`

	// The unique identifier for the session.
	SessionId *string `location:"header" locationName:"x-amz-lex-session-id" type:"string"`

	// If the dialogState value is ElicitSlot, returns the name of the slot for
	// which Amazon Lex is eliciting a value.
	SlotToElicit *string `location:"header" locationName:"x-amz-lex-slot-to-elicit" type:"string"`

	// Map of zero or more intent slots (name/value pairs) Amazon Lex detected from
	// the user input during the conversation. The field is base-64 encoded.
	//
	// Amazon Lex creates a resolution list containing likely values for a slot.
	// The value that it returns is determined by the valueSelectionStrategy selected
	// when the slot type was created or updated. If valueSelectionStrategy is set
	// to ORIGINAL_VALUE, the value provided by the user is returned, if the user
	// value is similar to the slot values. If valueSelectionStrategy is set to
	// TOP_RESOLUTION Amazon Lex returns the first value in the resolution list
	// or, if there is no resolution list, null. If you don't specify a valueSelectionStrategy,
	// the default is ORIGINAL_VALUE.
	Slots aws.JSONValue `location:"header" locationName:"x-amz-lex-slots" type:"jsonvalue"`
}

// String returns the string representation
func (s PostContentOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostContentOutput) GoString() string {
	return s.String()
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *PostContentOutput) SetActiveContexts(v aws.JSONValue) *PostContentOutput {
	s.ActiveContexts = v
	return s
}

// SetAlternativeIntents sets the AlternativeIntents field's value.
func (s *PostContentOutput) SetAlternativeIntents(v aws.JSONValue) *PostContentOutput {
	s.AlternativeIntents = v
	return s
}

// SetAudioStream sets the AudioStream field's value.
func (s *PostContentOutput) SetAudioStream(v io.ReadCloser) *PostContentOutput {
	s.AudioStream = v
	return s
}

// SetBotVersion sets the BotVersion field's value.
func (s *PostContentOutput) SetBotVersion(v string) *PostContentOutput {
	s.BotVersion = &v
	return s
}

// SetContentType sets the ContentType field's value.
func (s *PostContentOutput) SetContentType(v string) *PostContentOutput {
	s.ContentType = &v
	return s
}

// SetDialogState sets the DialogState field's value.
func (s *PostContentOutput) SetDialogState(v string) *PostContentOutput {
	s.DialogState = &v
	return s
}

// SetInputTranscript sets the InputTranscript field's value.
func (s *PostContentOutput) SetInputTranscript(v string) *PostContentOutput {
	s.InputTranscript = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *PostContentOutput) SetIntentName(v string) *PostContentOutput {
	s.IntentName = &v
	return s
}

// SetMessage sets the Message field's value.
func (s *PostContentOutput) SetMessage(v string) *PostContentOutput {
	s.Message = &v
	return s
}

// SetMessageFormat sets the MessageFormat field's value.
func (s *PostContentOutput) SetMessageFormat(v string) *PostContentOutput {
	s.MessageFormat = &v
	return s
}

// SetNluIntentConfidence sets the NluIntentConfidence field's value.
func (s *PostContentOutput) SetNluIntentConfidence(v aws.JSONValue) *PostContentOutput {
	s.NluIntentConfidence = v
	return s
}

// SetSentimentResponse sets the SentimentResponse field's value.
func (s *PostContentOutput) SetSentimentResponse(v string) *PostContentOutput {
	s.SentimentResponse = &v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostContentOutput) SetSessionAttributes(v aws.JSONValue) *PostContentOutput {
	s.SessionAttributes = v
	return s
}

// SetSessionId sets the SessionId field's value.
func (s *PostContentOutput) SetSessionId(v string) *PostContentOutput {
	s.SessionId = &v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *PostContentOutput) SetSlotToElicit(v string) *PostContentOutput {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *PostContentOutput) SetSlots(v aws.JSONValue) *PostContentOutput {
	s.Slots = v
	return s
}

type PostTextInput struct {
	_ struct{} `type:"structure"`

	// A list of contexts active for the request. A context can be activated when
	// a previous intent is fulfilled, or by including the context in the request,
	//
	// If you don't specify a list of contexts, Amazon Lex will use the current
	// list of contexts for the session. If you specify an empty list, all contexts
	// for the session are cleared.
	ActiveContexts []*ActiveContext `locationName:"activeContexts" type:"list" sensitive:"true"`

	// The alias of the Amazon Lex bot.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// The name of the Amazon Lex bot.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// The text that the user entered (Amazon Lex interprets this text).
	//
	// InputText is a required field
	InputText *string `locationName:"inputText" min:"1" type:"string" required:"true" sensitive:"true"`

	// Request-specific information passed between Amazon Lex and a client application.
	//
	// The namespace x-amz-lex: is reserved for special attributes. Don't create
	// any request attributes with the prefix x-amz-lex:.
	//
	// For more information, see Setting Request Attributes (https://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html#context-mgmt-request-attribs).
	RequestAttributes map[string]*string `locationName:"requestAttributes" type:"map" sensitive:"true"`

	// Application-specific information passed between Amazon Lex and a client application.
	//
	// For more information, see Setting Session Attributes (https://docs.aws.amazon.com/lex/latest/dg/context-mgmt.html#context-mgmt-session-attribs).
	SessionAttributes map[string]*string `locationName:"sessionAttributes" type:"map" sensitive:"true"`

	// The ID of the client application user. Amazon Lex uses this to identify a
	// user's conversation with your bot. At runtime, each request must contain
	// the userID field.
	//
	// To decide the user ID to use for your application, consider the following
	// factors.
	//
	//    * The userID field must not contain any personally identifiable information
	//    of the user, for example, name, personal identification numbers, or other
	//    end user personal information.
	//
	//    * If you want a user to start a conversation on one device and continue
	//    on another device, use a user-specific identifier.
	//
	//    * If you want the same user to be able to have two independent conversations
	//    on two different devices, choose a device-specific identifier.
	//
	//    * A user can't have two independent conversations with two different versions
	//    of the same bot. For example, a user can't have a conversation with the
	//    PROD and BETA versions of the same bot. If you anticipate that a user
	//    will need to have conversation with two different versions, for example,
	//    while testing, include the bot alias in the user ID to separate the two
	//    conversations.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s PostTextInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostTextInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *PostTextInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "PostTextInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotAlias != nil && len(*s.BotAlias) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotAlias", 1))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.BotName != nil && len(*s.BotName) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotName", 1))
	}
	if s.InputText == nil {
		invalidParams.Add(request.NewErrParamRequired("InputText"))
	}
	if s.InputText != nil && len(*s.InputText) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("InputText", 1))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}
	if s.ActiveContexts != nil {
		for i, v := range s.ActiveContexts {
			if v == nil {
				continue
			}
			if err := v.Validate(); err != nil {
				invalidParams.AddNested(fmt.Sprintf("%s[%v]", "ActiveContexts", i), err.(request.ErrInvalidParams))
			}
		}
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *PostTextInput) SetActiveContexts(v []*ActiveContext) *PostTextInput {
	s.ActiveContexts = v
	return s
}

// SetBotAlias sets the BotAlias field's value.
func (s *PostTextInput) SetBotAlias(v string) *PostTextInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *PostTextInput) SetBotName(v string) *PostTextInput {
	s.BotName = &v
	return s
}

// SetInputText sets the InputText field's value.
func (s *PostTextInput) SetInputText(v string) *PostTextInput {
	s.InputText = &v
	return s
}

// SetRequestAttributes sets the RequestAttributes field's value.
func (s *PostTextInput) SetRequestAttributes(v map[string]*string) *PostTextInput {
	s.RequestAttributes = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostTextInput) SetSessionAttributes(v map[string]*string) *PostTextInput {
	s.SessionAttributes = v
	return s
}

// SetUserId sets the UserId field's value.
func (s *PostTextInput) SetUserId(v string) *PostTextInput {
	s.UserId = &v
	return s
}

type PostTextOutput struct {
	_ struct{} `type:"structure"`

	// A list of active contexts for the session. A context can be set when an intent
	// is fulfilled or by calling the PostContent, PostText, or PutSession operation.
	//
	// You can use a context to control the intents that can follow up an intent,
	// or to modify the operation of your application.
	ActiveContexts []*ActiveContext `locationName:"activeContexts" type:"list" sensitive:"true"`

	// One to four alternative intents that may be applicable to the user's intent.
	//
	// Each alternative includes a score that indicates how confident Amazon Lex
	// is that the intent matches the user's intent. The intents are sorted by the
	// confidence score.
	AlternativeIntents []*PredictedIntent `locationName:"alternativeIntents" type:"list"`

	// The version of the bot that responded to the conversation. You can use this
	// information to help determine if one version of a bot is performing better
	// than another version.
	BotVersion *string `locationName:"botVersion" min:"1" type:"string"`

	// Identifies the current state of the user interaction. Amazon Lex returns
	// one of the following values as dialogState. The client can optionally use
	// this information to customize the user interface.
	//
	//    * ElicitIntent - Amazon Lex wants to elicit user intent. For example,
	//    a user might utter an intent ("I want to order a pizza"). If Amazon Lex
	//    cannot infer the user intent from this utterance, it will return this
	//    dialogState.
	//
	//    * ConfirmIntent - Amazon Lex is expecting a "yes" or "no" response. For
	//    example, Amazon Lex wants user confirmation before fulfilling an intent.
	//    Instead of a simple "yes" or "no," a user might respond with additional
	//    information. For example, "yes, but make it thick crust pizza" or "no,
	//    I want to order a drink". Amazon Lex can process such additional information
	//    (in these examples, update the crust type slot value, or change intent
	//    from OrderPizza to OrderDrink).
	//
	//    * ElicitSlot - Amazon Lex is expecting a slot value for the current intent.
	//    For example, suppose that in the response Amazon Lex sends this message:
	//    "What size pizza would you like?". A user might reply with the slot value
	//    (e.g., "medium"). The user might also provide additional information in
	//    the response (e.g., "medium thick crust pizza"). Amazon Lex can process
	//    such additional information appropriately.
	//
	//    * Fulfilled - Conveys that the Lambda function configured for the intent
	//    has successfully fulfilled the intent.
	//
	//    * ReadyForFulfillment - Conveys that the client has to fulfill the intent.
	//
	//    * Failed - Conveys that the conversation with the user failed. This can
	//    happen for various reasons including that the user did not provide an
	//    appropriate response to prompts from the service (you can configure how
	//    many times Amazon Lex can prompt a user for specific information), or
	//    the Lambda function failed to fulfill the intent.
	DialogState *string `locationName:"dialogState" type:"string" enum:"DialogState"`

	// The current user intent that Amazon Lex is aware of.
	IntentName *string `locationName:"intentName" type:"string"`

	// The message to convey to the user. The message can come from the bot's configuration
	// or from a Lambda function.
	//
	// If the intent is not configured with a Lambda function, or if the Lambda
	// function returned Delegate as the dialogAction.type its response, Amazon
	// Lex decides on the next course of action and selects an appropriate message
	// from the bot's configuration based on the current interaction context. For
	// example, if Amazon Lex isn't able to understand user input, it uses a clarification
	// prompt message.
	//
	// When you create an intent you can assign messages to groups. When messages
	// are assigned to groups Amazon Lex returns one message from each group in
	// the response. The message field is an escaped JSON string containing the
	// messages. For more information about the structure of the JSON string returned,
	// see msg-prompts-formats.
	//
	// If the Lambda function returns a message, Amazon Lex passes it to the client
	// in its response.
	Message *string `locationName:"message" min:"1" type:"string" sensitive:"true"`

	// The format of the response message. One of the following values:
	//
	//    * PlainText - The message contains plain UTF-8 text.
	//
	//    * CustomPayload - The message is a custom format defined by the Lambda
	//    function.
	//
	//    * SSML - The message contains text formatted for voice output.
	//
	//    * Composite - The message contains an escaped JSON object containing one
	//    or more messages from the groups that messages were assigned to when the
	//    intent was created.
	MessageFormat *string `locationName:"messageFormat" type:"string" enum:"MessageFormatType"`

	// Provides a score that indicates how confident Amazon Lex is that the returned
	// intent is the one that matches the user's intent. The score is between 0.0
	// and 1.0. For more information, see Confidence Scores (https://docs.aws.amazon.com/lex/latest/dg/confidence-scores.html).
	//
	// The score is a relative score, not an absolute score. The score may change
	// based on improvements to Amazon Lex.
	NluIntentConfidence *IntentConfidence `locationName:"nluIntentConfidence" type:"structure"`

	// Represents the options that the user has to respond to the current prompt.
	// Response Card can come from the bot configuration (in the Amazon Lex console,
	// choose the settings button next to a slot) or from a code hook (Lambda function).
	ResponseCard *ResponseCard `locationName:"responseCard" type:"structure"`

	// The sentiment expressed in and utterance.
	//
	// When the bot is configured to send utterances to Amazon Comprehend for sentiment
	// analysis, this field contains the result of the analysis.
	SentimentResponse *SentimentResponse `locationName:"sentimentResponse" type:"structure"`

	// A map of key-value pairs representing the session-specific context information.
	SessionAttributes map[string]*string `locationName:"sessionAttributes" type:"map" sensitive:"true"`

	// A unique identifier for the session.
	SessionId *string `locationName:"sessionId" type:"string"`

	// If the dialogState value is ElicitSlot, returns the name of the slot for
	// which Amazon Lex is eliciting a value.
	SlotToElicit *string `locationName:"slotToElicit" type:"string"`

	// The intent slots that Amazon Lex detected from the user input in the conversation.
	//
	// Amazon Lex creates a resolution list containing likely values for a slot.
	// The value that it returns is determined by the valueSelectionStrategy selected
	// when the slot type was created or updated. If valueSelectionStrategy is set
	// to ORIGINAL_VALUE, the value provided by the user is returned, if the user
	// value is similar to the slot values. If valueSelectionStrategy is set to
	// TOP_RESOLUTION Amazon Lex returns the first value in the resolution list
	// or, if there is no resolution list, null. If you don't specify a valueSelectionStrategy,
	// the default is ORIGINAL_VALUE.
	Slots map[string]*string `locationName:"slots" type:"map" sensitive:"true"`
}

// String returns the string representation
func (s PostTextOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PostTextOutput) GoString() string {
	return s.String()
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *PostTextOutput) SetActiveContexts(v []*ActiveContext) *PostTextOutput {
	s.ActiveContexts = v
	return s
}

// SetAlternativeIntents sets the AlternativeIntents field's value.
func (s *PostTextOutput) SetAlternativeIntents(v []*PredictedIntent) *PostTextOutput {
	s.AlternativeIntents = v
	return s
}

// SetBotVersion sets the BotVersion field's value.
func (s *PostTextOutput) SetBotVersion(v string) *PostTextOutput {
	s.BotVersion = &v
	return s
}

// SetDialogState sets the DialogState field's value.
func (s *PostTextOutput) SetDialogState(v string) *PostTextOutput {
	s.DialogState = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *PostTextOutput) SetIntentName(v string) *PostTextOutput {
	s.IntentName = &v
	return s
}

// SetMessage sets the Message field's value.
func (s *PostTextOutput) SetMessage(v string) *PostTextOutput {
	s.Message = &v
	return s
}

// SetMessageFormat sets the MessageFormat field's value.
func (s *PostTextOutput) SetMessageFormat(v string) *PostTextOutput {
	s.MessageFormat = &v
	return s
}

// SetNluIntentConfidence sets the NluIntentConfidence field's value.
func (s *PostTextOutput) SetNluIntentConfidence(v *IntentConfidence) *PostTextOutput {
	s.NluIntentConfidence = v
	return s
}

// SetResponseCard sets the ResponseCard field's value.
func (s *PostTextOutput) SetResponseCard(v *ResponseCard) *PostTextOutput {
	s.ResponseCard = v
	return s
}

// SetSentimentResponse sets the SentimentResponse field's value.
func (s *PostTextOutput) SetSentimentResponse(v *SentimentResponse) *PostTextOutput {
	s.SentimentResponse = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PostTextOutput) SetSessionAttributes(v map[string]*string) *PostTextOutput {
	s.SessionAttributes = v
	return s
}

// SetSessionId sets the SessionId field's value.
func (s *PostTextOutput) SetSessionId(v string) *PostTextOutput {
	s.SessionId = &v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *PostTextOutput) SetSlotToElicit(v string) *PostTextOutput {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *PostTextOutput) SetSlots(v map[string]*string) *PostTextOutput {
	s.Slots = v
	return s
}

// An intent that Amazon Lex suggests satisfies the user's intent. Includes
// the name of the intent, the confidence that Amazon Lex has that the user's
// intent is satisfied, and the slots defined for the intent.
type PredictedIntent struct {
	_ struct{} `type:"structure"`

	// The name of the intent that Amazon Lex suggests satisfies the user's intent.
	IntentName *string `locationName:"intentName" type:"string"`

	// Indicates how confident Amazon Lex is that an intent satisfies the user's
	// intent.
	NluIntentConfidence *IntentConfidence `locationName:"nluIntentConfidence" type:"structure"`

	// The slot and slot values associated with the predicted intent.
	Slots map[string]*string `locationName:"slots" type:"map" sensitive:"true"`
}

// String returns the string representation
func (s PredictedIntent) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PredictedIntent) GoString() string {
	return s.String()
}

// SetIntentName sets the IntentName field's value.
func (s *PredictedIntent) SetIntentName(v string) *PredictedIntent {
	s.IntentName = &v
	return s
}

// SetNluIntentConfidence sets the NluIntentConfidence field's value.
func (s *PredictedIntent) SetNluIntentConfidence(v *IntentConfidence) *PredictedIntent {
	s.NluIntentConfidence = v
	return s
}

// SetSlots sets the Slots field's value.
func (s *PredictedIntent) SetSlots(v map[string]*string) *PredictedIntent {
	s.Slots = v
	return s
}

type PutSessionInput struct {
	_ struct{} `type:"structure"`

	// The message that Amazon Lex returns in the response can be either text or
	// speech based depending on the value of this field.
	//
	//    * If the value is text/plain; charset=utf-8, Amazon Lex returns text in
	//    the response.
	//
	//    * If the value begins with audio/, Amazon Lex returns speech in the response.
	//    Amazon Lex uses Amazon Polly to generate the speech in the configuration
	//    that you specify. For example, if you specify audio/mpeg as the value,
	//    Amazon Lex returns speech in the MPEG format.
	//
	//    * If the value is audio/pcm, the speech is returned as audio/pcm in 16-bit,
	//    little endian format.
	//
	//    * The following are the accepted values: audio/mpeg audio/ogg audio/pcm
	//    audio/* (defaults to mpeg) text/plain; charset=utf-8
	Accept *string `location:"header" locationName:"Accept" type:"string"`

	// A list of contexts active for the request. A context can be activated when
	// a previous intent is fulfilled, or by including the context in the request,
	//
	// If you don't specify a list of contexts, Amazon Lex will use the current
	// list of contexts for the session. If you specify an empty list, all contexts
	// for the session are cleared.
	ActiveContexts []*ActiveContext `locationName:"activeContexts" type:"list" sensitive:"true"`

	// The alias in use for the bot that contains the session data.
	//
	// BotAlias is a required field
	BotAlias *string `location:"uri" locationName:"botAlias" type:"string" required:"true"`

	// The name of the bot that contains the session data.
	//
	// BotName is a required field
	BotName *string `location:"uri" locationName:"botName" type:"string" required:"true"`

	// Sets the next action that the bot should take to fulfill the conversation.
	DialogAction *DialogAction `locationName:"dialogAction" type:"structure"`

	// A summary of the recent intents for the bot. You can use the intent summary
	// view to set a checkpoint label on an intent and modify attributes of intents.
	// You can also use it to remove or add intent summary objects to the list.
	//
	// An intent that you modify or add to the list must make sense for the bot.
	// For example, the intent name must be valid for the bot. You must provide
	// valid values for:
	//
	//    * intentName
	//
	//    * slot names
	//
	//    * slotToElict
	//
	// If you send the recentIntentSummaryView parameter in a PutSession request,
	// the contents of the new summary view replaces the old summary view. For example,
	// if a GetSession request returns three intents in the summary view and you
	// call PutSession with one intent in the summary view, the next call to GetSession
	// will only return one intent.
	RecentIntentSummaryView []*IntentSummary `locationName:"recentIntentSummaryView" type:"list"`

	// Map of key/value pairs representing the session-specific context information.
	// It contains application information passed between Amazon Lex and a client
	// application.
	SessionAttributes map[string]*string `locationName:"sessionAttributes" type:"map" sensitive:"true"`

	// The ID of the client application user. Amazon Lex uses this to identify a
	// user's conversation with your bot.
	//
	// UserId is a required field
	UserId *string `location:"uri" locationName:"userId" min:"2" type:"string" required:"true"`
}

// String returns the string representation
func (s PutSessionInput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PutSessionInput) GoString() string {
	return s.String()
}

// Validate inspects the fields of the type to determine if they are valid.
func (s *PutSessionInput) Validate() error {
	invalidParams := request.ErrInvalidParams{Context: "PutSessionInput"}
	if s.BotAlias == nil {
		invalidParams.Add(request.NewErrParamRequired("BotAlias"))
	}
	if s.BotAlias != nil && len(*s.BotAlias) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotAlias", 1))
	}
	if s.BotName == nil {
		invalidParams.Add(request.NewErrParamRequired("BotName"))
	}
	if s.BotName != nil && len(*s.BotName) < 1 {
		invalidParams.Add(request.NewErrParamMinLen("BotName", 1))
	}
	if s.UserId == nil {
		invalidParams.Add(request.NewErrParamRequired("UserId"))
	}
	if s.UserId != nil && len(*s.UserId) < 2 {
		invalidParams.Add(request.NewErrParamMinLen("UserId", 2))
	}
	if s.ActiveContexts != nil {
		for i, v := range s.ActiveContexts {
			if v == nil {
				continue
			}
			if err := v.Validate(); err != nil {
				invalidParams.AddNested(fmt.Sprintf("%s[%v]", "ActiveContexts", i), err.(request.ErrInvalidParams))
			}
		}
	}
	if s.DialogAction != nil {
		if err := s.DialogAction.Validate(); err != nil {
			invalidParams.AddNested("DialogAction", err.(request.ErrInvalidParams))
		}
	}
	if s.RecentIntentSummaryView != nil {
		for i, v := range s.RecentIntentSummaryView {
			if v == nil {
				continue
			}
			if err := v.Validate(); err != nil {
				invalidParams.AddNested(fmt.Sprintf("%s[%v]", "RecentIntentSummaryView", i), err.(request.ErrInvalidParams))
			}
		}
	}

	if invalidParams.Len() > 0 {
		return invalidParams
	}
	return nil
}

// SetAccept sets the Accept field's value.
func (s *PutSessionInput) SetAccept(v string) *PutSessionInput {
	s.Accept = &v
	return s
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *PutSessionInput) SetActiveContexts(v []*ActiveContext) *PutSessionInput {
	s.ActiveContexts = v
	return s
}

// SetBotAlias sets the BotAlias field's value.
func (s *PutSessionInput) SetBotAlias(v string) *PutSessionInput {
	s.BotAlias = &v
	return s
}

// SetBotName sets the BotName field's value.
func (s *PutSessionInput) SetBotName(v string) *PutSessionInput {
	s.BotName = &v
	return s
}

// SetDialogAction sets the DialogAction field's value.
func (s *PutSessionInput) SetDialogAction(v *DialogAction) *PutSessionInput {
	s.DialogAction = v
	return s
}

// SetRecentIntentSummaryView sets the RecentIntentSummaryView field's value.
func (s *PutSessionInput) SetRecentIntentSummaryView(v []*IntentSummary) *PutSessionInput {
	s.RecentIntentSummaryView = v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PutSessionInput) SetSessionAttributes(v map[string]*string) *PutSessionInput {
	s.SessionAttributes = v
	return s
}

// SetUserId sets the UserId field's value.
func (s *PutSessionInput) SetUserId(v string) *PutSessionInput {
	s.UserId = &v
	return s
}

type PutSessionOutput struct {
	_ struct{} `type:"structure" payload:"AudioStream"`

	// A list of active contexts for the session.
	ActiveContexts aws.JSONValue `location:"header" locationName:"x-amz-lex-active-contexts" type:"jsonvalue"`

	// The audio version of the message to convey to the user.
	AudioStream io.ReadCloser `locationName:"audioStream" type:"blob"`

	// Content type as specified in the Accept HTTP header in the request.
	ContentType *string `location:"header" locationName:"Content-Type" type:"string"`

	//    * ConfirmIntent - Amazon Lex is expecting a "yes" or "no" response to
	//    confirm the intent before fulfilling an intent.
	//
	//    * ElicitIntent - Amazon Lex wants to elicit the user's intent.
	//
	//    * ElicitSlot - Amazon Lex is expecting the value of a slot for the current
	//    intent.
	//
	//    * Failed - Conveys that the conversation with the user has failed. This
	//    can happen for various reasons, including the user does not provide an
	//    appropriate response to prompts from the service, or if the Lambda function
	//    fails to fulfill the intent.
	//
	//    * Fulfilled - Conveys that the Lambda function has sucessfully fulfilled
	//    the intent.
	//
	//    * ReadyForFulfillment - Conveys that the client has to fulfill the intent.
	DialogState *string `location:"header" locationName:"x-amz-lex-dialog-state" type:"string" enum:"DialogState"`

	// The name of the current intent.
	IntentName *string `location:"header" locationName:"x-amz-lex-intent-name" type:"string"`

	// The next message that should be presented to the user.
	Message *string `location:"header" locationName:"x-amz-lex-message" min:"1" type:"string" sensitive:"true"`

	// The format of the response message. One of the following values:
	//
	//    * PlainText - The message contains plain UTF-8 text.
	//
	//    * CustomPayload - The message is a custom format for the client.
	//
	//    * SSML - The message contains text formatted for voice output.
	//
	//    * Composite - The message contains an escaped JSON object containing one
	//    or more messages from the groups that messages were assigned to when the
	//    intent was created.
	MessageFormat *string `location:"header" locationName:"x-amz-lex-message-format" type:"string" enum:"MessageFormatType"`

	// Map of key/value pairs representing session-specific context information.
	SessionAttributes aws.JSONValue `location:"header" locationName:"x-amz-lex-session-attributes" type:"jsonvalue"`

	// A unique identifier for the session.
	SessionId *string `location:"header" locationName:"x-amz-lex-session-id" type:"string"`

	// If the dialogState is ElicitSlot, returns the name of the slot for which
	// Amazon Lex is eliciting a value.
	SlotToElicit *string `location:"header" locationName:"x-amz-lex-slot-to-elicit" type:"string"`

	// Map of zero or more intent slots Amazon Lex detected from the user input
	// during the conversation.
	//
	// Amazon Lex creates a resolution list containing likely values for a slot.
	// The value that it returns is determined by the valueSelectionStrategy selected
	// when the slot type was created or updated. If valueSelectionStrategy is set
	// to ORIGINAL_VALUE, the value provided by the user is returned, if the user
	// value is similar to the slot values. If valueSelectionStrategy is set to
	// TOP_RESOLUTION Amazon Lex returns the first value in the resolution list
	// or, if there is no resolution list, null. If you don't specify a valueSelectionStrategy
	// the default is ORIGINAL_VALUE.
	Slots aws.JSONValue `location:"header" locationName:"x-amz-lex-slots" type:"jsonvalue"`
}

// String returns the string representation
func (s PutSessionOutput) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s PutSessionOutput) GoString() string {
	return s.String()
}

// SetActiveContexts sets the ActiveContexts field's value.
func (s *PutSessionOutput) SetActiveContexts(v aws.JSONValue) *PutSessionOutput {
	s.ActiveContexts = v
	return s
}

// SetAudioStream sets the AudioStream field's value.
func (s *PutSessionOutput) SetAudioStream(v io.ReadCloser) *PutSessionOutput {
	s.AudioStream = v
	return s
}

// SetContentType sets the ContentType field's value.
func (s *PutSessionOutput) SetContentType(v string) *PutSessionOutput {
	s.ContentType = &v
	return s
}

// SetDialogState sets the DialogState field's value.
func (s *PutSessionOutput) SetDialogState(v string) *PutSessionOutput {
	s.DialogState = &v
	return s
}

// SetIntentName sets the IntentName field's value.
func (s *PutSessionOutput) SetIntentName(v string) *PutSessionOutput {
	s.IntentName = &v
	return s
}

// SetMessage sets the Message field's value.
func (s *PutSessionOutput) SetMessage(v string) *PutSessionOutput {
	s.Message = &v
	return s
}

// SetMessageFormat sets the MessageFormat field's value.
func (s *PutSessionOutput) SetMessageFormat(v string) *PutSessionOutput {
	s.MessageFormat = &v
	return s
}

// SetSessionAttributes sets the SessionAttributes field's value.
func (s *PutSessionOutput) SetSessionAttributes(v aws.JSONValue) *PutSessionOutput {
	s.SessionAttributes = v
	return s
}

// SetSessionId sets the SessionId field's value.
func (s *PutSessionOutput) SetSessionId(v string) *PutSessionOutput {
	s.SessionId = &v
	return s
}

// SetSlotToElicit sets the SlotToElicit field's value.
func (s *PutSessionOutput) SetSlotToElicit(v string) *PutSessionOutput {
	s.SlotToElicit = &v
	return s
}

// SetSlots sets the Slots field's value.
func (s *PutSessionOutput) SetSlots(v aws.JSONValue) *PutSessionOutput {
	s.Slots = v
	return s
}

// The input speech is too long.
type RequestTimeoutException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s RequestTimeoutException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s RequestTimeoutException) GoString() string {
	return s.String()
}

func newErrorRequestTimeoutException(v protocol.ResponseMetadata) error {
	return &RequestTimeoutException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *RequestTimeoutException) Code() string {
	return "RequestTimeoutException"
}

// Message returns the exception's message.
func (s *RequestTimeoutException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *RequestTimeoutException) OrigErr() error {
	return nil
}

func (s *RequestTimeoutException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *RequestTimeoutException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *RequestTimeoutException) RequestID() string {
	return s.RespMetadata.RequestID
}

// If you configure a response card when creating your bots, Amazon Lex substitutes
// the session attributes and slot values that are available, and then returns
// it. The response card can also come from a Lambda function ( dialogCodeHook
// and fulfillmentActivity on an intent).
type ResponseCard struct {
	_ struct{} `type:"structure"`

	// The content type of the response.
	ContentType *string `locationName:"contentType" type:"string" enum:"ContentType"`

	// An array of attachment objects representing options.
	GenericAttachments []*GenericAttachment `locationName:"genericAttachments" type:"list"`

	// The version of the response card format.
	Version *string `locationName:"version" type:"string"`
}

// String returns the string representation
func (s ResponseCard) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s ResponseCard) GoString() string {
	return s.String()
}

// SetContentType sets the ContentType field's value.
func (s *ResponseCard) SetContentType(v string) *ResponseCard {
	s.ContentType = &v
	return s
}

// SetGenericAttachments sets the GenericAttachments field's value.
func (s *ResponseCard) SetGenericAttachments(v []*GenericAttachment) *ResponseCard {
	s.GenericAttachments = v
	return s
}

// SetVersion sets the Version field's value.
func (s *ResponseCard) SetVersion(v string) *ResponseCard {
	s.Version = &v
	return s
}

// The sentiment expressed in an utterance.
//
// When the bot is configured to send utterances to Amazon Comprehend for sentiment
// analysis, this field structure contains the result of the analysis.
type SentimentResponse struct {
	_ struct{} `type:"structure"`

	// The inferred sentiment that Amazon Comprehend has the highest confidence
	// in.
	SentimentLabel *string `locationName:"sentimentLabel" type:"string"`

	// The likelihood that the sentiment was correctly inferred.
	SentimentScore *string `locationName:"sentimentScore" type:"string"`
}

// String returns the string representation
func (s SentimentResponse) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s SentimentResponse) GoString() string {
	return s.String()
}

// SetSentimentLabel sets the SentimentLabel field's value.
func (s *SentimentResponse) SetSentimentLabel(v string) *SentimentResponse {
	s.SentimentLabel = &v
	return s
}

// SetSentimentScore sets the SentimentScore field's value.
func (s *SentimentResponse) SetSentimentScore(v string) *SentimentResponse {
	s.SentimentScore = &v
	return s
}

// The Content-Type header (PostContent API) has an invalid value.
type UnsupportedMediaTypeException struct {
	_            struct{}                  `type:"structure"`
	RespMetadata protocol.ResponseMetadata `json:"-" xml:"-"`

	Message_ *string `locationName:"message" type:"string"`
}

// String returns the string representation
func (s UnsupportedMediaTypeException) String() string {
	return awsutil.Prettify(s)
}

// GoString returns the string representation
func (s UnsupportedMediaTypeException) GoString() string {
	return s.String()
}

func newErrorUnsupportedMediaTypeException(v protocol.ResponseMetadata) error {
	return &UnsupportedMediaTypeException{
		RespMetadata: v,
	}
}

// Code returns the exception type name.
func (s *UnsupportedMediaTypeException) Code() string {
	return "UnsupportedMediaTypeException"
}

// Message returns the exception's message.
func (s *UnsupportedMediaTypeException) Message() string {
	if s.Message_ != nil {
		return *s.Message_
	}
	return ""
}

// OrigErr always returns nil, satisfies awserr.Error interface.
func (s *UnsupportedMediaTypeException) OrigErr() error {
	return nil
}

func (s *UnsupportedMediaTypeException) Error() string {
	return fmt.Sprintf("%s: %s", s.Code(), s.Message())
}

// Status code returns the HTTP status code for the request's response error.
func (s *UnsupportedMediaTypeException) StatusCode() int {
	return s.RespMetadata.StatusCode
}

// RequestID returns the service's response RequestID for request.
func (s *UnsupportedMediaTypeException) RequestID() string {
	return s.RespMetadata.RequestID
}

const (
	// ConfirmationStatusNone is a ConfirmationStatus enum value
	ConfirmationStatusNone = "None"

	// ConfirmationStatusConfirmed is a ConfirmationStatus enum value
	ConfirmationStatusConfirmed = "Confirmed"

	// ConfirmationStatusDenied is a ConfirmationStatus enum value
	ConfirmationStatusDenied = "Denied"
)

// ConfirmationStatus_Values returns all elements of the ConfirmationStatus enum
func ConfirmationStatus_Values() []string {
	return []string{
		ConfirmationStatusNone,
		ConfirmationStatusConfirmed,
		ConfirmationStatusDenied,
	}
}

const (
	// ContentTypeApplicationVndAmazonawsCardGeneric is a ContentType enum value
	ContentTypeApplicationVndAmazonawsCardGeneric = "application/vnd.amazonaws.card.generic"
)

// ContentType_Values returns all elements of the ContentType enum
func ContentType_Values() []string {
	return []string{
		ContentTypeApplicationVndAmazonawsCardGeneric,
	}
}

const (
	// DialogActionTypeElicitIntent is a DialogActionType enum value
	DialogActionTypeElicitIntent = "ElicitIntent"

	// DialogActionTypeConfirmIntent is a DialogActionType enum value
	DialogActionTypeConfirmIntent = "ConfirmIntent"

	// DialogActionTypeElicitSlot is a DialogActionType enum value
	DialogActionTypeElicitSlot = "ElicitSlot"

	// DialogActionTypeClose is a DialogActionType enum value
	DialogActionTypeClose = "Close"

	// DialogActionTypeDelegate is a DialogActionType enum value
	DialogActionTypeDelegate = "Delegate"
)

// DialogActionType_Values returns all elements of the DialogActionType enum
func DialogActionType_Values() []string {
	return []string{
		DialogActionTypeElicitIntent,
		DialogActionTypeConfirmIntent,
		DialogActionTypeElicitSlot,
		DialogActionTypeClose,
		DialogActionTypeDelegate,
	}
}

const (
	// DialogStateElicitIntent is a DialogState enum value
	DialogStateElicitIntent = "ElicitIntent"

	// DialogStateConfirmIntent is a DialogState enum value
	DialogStateConfirmIntent = "ConfirmIntent"

	// DialogStateElicitSlot is a DialogState enum value
	DialogStateElicitSlot = "ElicitSlot"

	// DialogStateFulfilled is a DialogState enum value
	DialogStateFulfilled = "Fulfilled"

	// DialogStateReadyForFulfillment is a DialogState enum value
	DialogStateReadyForFulfillment = "ReadyForFulfillment"

	// DialogStateFailed is a DialogState enum value
	DialogStateFailed = "Failed"
)

// DialogState_Values returns all elements of the DialogState enum
func DialogState_Values() []string {
	return []string{
		DialogStateElicitIntent,
		DialogStateConfirmIntent,
		DialogStateElicitSlot,
		DialogStateFulfilled,
		DialogStateReadyForFulfillment,
		DialogStateFailed,
	}
}

const (
	// FulfillmentStateFulfilled is a FulfillmentState enum value
	FulfillmentStateFulfilled = "Fulfilled"

	// FulfillmentStateFailed is a FulfillmentState enum value
	FulfillmentStateFailed = "Failed"

	// FulfillmentStateReadyForFulfillment is a FulfillmentState enum value
	FulfillmentStateReadyForFulfillment = "ReadyForFulfillment"
)

// FulfillmentState_Values returns all elements of the FulfillmentState enum
func FulfillmentState_Values() []string {
	return []string{
		FulfillmentStateFulfilled,
		FulfillmentStateFailed,
		FulfillmentStateReadyForFulfillment,
	}
}

const (
	// MessageFormatTypePlainText is a MessageFormatType enum value
	MessageFormatTypePlainText = "PlainText"

	// MessageFormatTypeCustomPayload is a MessageFormatType enum value
	MessageFormatTypeCustomPayload = "CustomPayload"

	// MessageFormatTypeSsml is a MessageFormatType enum value
	MessageFormatTypeSsml = "SSML"

	// MessageFormatTypeComposite is a MessageFormatType enum value
	MessageFormatTypeComposite = "Composite"
)

// MessageFormatType_Values returns all elements of the MessageFormatType enum
func MessageFormatType_Values() []string {
	return []string{
		MessageFormatTypePlainText,
		MessageFormatTypeCustomPayload,
		MessageFormatTypeSsml,
		MessageFormatTypeComposite,
	}
}