1// Copyright 2014 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package main
6
7import (
8	"fmt"
9	"log"
10	"net/http"
11	"os"
12	"strconv"
13	"strings"
14
15	books "google.golang.org/api/books/v1"
16)
17
18func init() {
19	registerDemo("books", books.BooksScope, booksMain)
20}
21
22// booksMain is an example that demonstrates calling the Books API.
23//
24// Example usage:
25//   go build -o go-api-demo *.go
26//   go-api-demo -clientid="my-clientid" -secret="my-secret" books
27func booksMain(client *http.Client, argv []string) {
28	if len(argv) != 0 {
29		fmt.Fprintln(os.Stderr, "Usage: books")
30		return
31	}
32
33	svc, err := books.New(client)
34	if err != nil {
35		log.Fatalf("Unable to create Books service: %v", err)
36	}
37
38	bs, err := svc.Mylibrary.Bookshelves.List().Do()
39	if err != nil {
40		log.Fatalf("Unable to retrieve mylibrary bookshelves: %v", err)
41	}
42
43	if len(bs.Items) == 0 {
44		log.Fatal("You have no bookshelves to explore.")
45	}
46	for _, b := range bs.Items {
47		// Note that sometimes VolumeCount is not populated, so it may erroneously say '0'.
48		log.Printf("You have %v books on bookshelf %q:", b.VolumeCount, b.Title)
49
50		// List the volumes on this shelf.
51		vol, err := svc.Mylibrary.Bookshelves.Volumes.List(strconv.FormatInt(b.Id, 10)).Do()
52		if err != nil {
53			log.Fatalf("Unable to retrieve mylibrary bookshelf volumes: %v", err)
54		}
55		for _, v := range vol.Items {
56			var s []string
57			if v.VolumeInfo.ReadingModes.Image {
58				s = append(s, "image")
59			} else {
60				s = append(s, "text")
61			}
62			extra := fmt.Sprintf("; formats: %v", s)
63			if v.VolumeInfo.ImageLinks != nil {
64				extra += fmt.Sprintf("; thumbnail: %v", v.VolumeInfo.ImageLinks.Thumbnail)
65			}
66			log.Printf("  %q by %v%v", v.VolumeInfo.Title, strings.Join(v.VolumeInfo.Authors, ", "), extra)
67		}
68	}
69}
70