1/*
2Copyright © LiquidWeb
3
4Licensed under the Apache License, Version 2.0 (the "License");
5you may not use this file except in compliance with the License.
6You may obtain a copy of the License at
7
8    http://www.apache.org/licenses/LICENSE-2.0
9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15*/
16package instance
17
18import (
19	"bytes"
20	"encoding/json"
21	"fmt"
22
23	"github.com/spf13/viper"
24
25	"github.com/liquidweb/liquidweb-cli/types/cmd"
26)
27
28func (client *Client) RemoveContext(context string) error {
29	// review this function once Unset (or similar) in viper is available
30	// https://github.com/spf13/viper/pull/519
31	if context == "" {
32		return fmt.Errorf("context cannot be empty")
33	}
34
35	currentContext := client.Viper.GetString("liquidweb.api.current_context")
36	if context == currentContext {
37		return fmt.Errorf("cannot remove context currently set as current context")
38	}
39
40	if err := ValidateContext(context, client.Viper); err != nil {
41		return fmt.Errorf("context %s doesnt exist, cannot remove", context)
42	}
43
44	// save current config into a map, then delete requested context
45	cfgMap := client.Viper.AllSettings()
46	delete(cfgMap["liquidweb"].(map[string]interface{})["api"].(map[string]interface{})["contexts"].(map[string]interface{}), context)
47
48	// json encode modified map
49	encodedCfg, err := json.MarshalIndent(cfgMap, "", " ")
50	if err != nil {
51		return err
52	}
53
54	// read newly encoded config back into viper
55	if err := client.Viper.ReadConfig(bytes.NewBuffer(encodedCfg)); err != nil {
56		return err
57	}
58
59	// write the new viper configuration to file
60	if err := client.Viper.WriteConfig(); err != nil {
61		return err
62	}
63
64	return nil
65}
66
67func ValidateContext(wantedContext string, vp *viper.Viper) error {
68	var isValid bool
69	contexts := vp.GetStringMap("liquidweb.api.contexts")
70	for _, contextInter := range contexts {
71		var context cmdTypes.AuthContext
72		if err := CastFieldTypes(contextInter, &context); err != nil {
73			return err
74		}
75
76		if context.ContextName == wantedContext {
77			isValid = true
78			break
79		}
80	}
81
82	if !isValid {
83		return fmt.Errorf("given context [%s] is not a valid context", wantedContext)
84	}
85
86	return nil
87}
88