77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"fmt"
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"log"
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"net/http"
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"os"
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"strconv"
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"strings"
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books "google.golang.org/api/books/v1"
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"google.golang.org/api/googleapi"
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)
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func init() {
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registerDemo("books", books.BooksScope, booksMain)
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}
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// booksMain is an example that demonstrates calling the Books API.
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//
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// Example usage:
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// go build -o go-api-demo *.go
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// go-api-demo -clientid="my-clientid" -secret="my-secret" books
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func booksMain(client *http.Client, argv []string) {
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if len(argv) != 0 {
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fmt.Fprintln(os.Stderr, "Usage: books")
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return
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}
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svc, err := books.New(client)
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if err != nil {
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log.Fatalf("Unable to create Books service: %v", err)
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}
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bs, err := svc.Mylibrary.Bookshelves.List().Do()
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if err != nil {
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log.Fatalf("Unable to retrieve mylibrary bookshelves: %v", err)
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}
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if len(bs.Items) == 0 {
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log.Fatal("You have no bookshelves to explore.")
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}
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for _, b := range bs.Items {
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// Note that sometimes VolumeCount is not populated, so it may erroneously say '0'.
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log.Printf("You have %v books on bookshelf %q:", b.VolumeCount, b.Title)
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// List the volumes on this shelf.
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vol, err := svc.Mylibrary.Bookshelves.Volumes.List(strconv.FormatInt(b.Id, 10)).Do()
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if err != nil {
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log.Fatalf("Unable to retrieve mylibrary bookshelf volumes: %v", err)
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}
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for _, v := range vol.Items {
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var info struct {
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Text bool `json:"text"`
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Image bool `json:"image"`
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}
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// Parse the additional fields, but ignore errors, as the information is not critical.
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googleapi.ConvertVariant(v.VolumeInfo.ReadingModes.(map[string]interface{}), &info)
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var s []string
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if info.Text {
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s = append(s, "text")
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}
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if info.Image {
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s = append(s, "image")
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}
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extra := fmt.Sprintf("; formats: %v", s)
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if v.VolumeInfo.ImageLinks != nil {
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extra += fmt.Sprintf("; thumbnail: %v", v.VolumeInfo.ImageLinks.Thumbnail)
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}
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log.Printf(" %q by %v%v", v.VolumeInfo.Title, strings.Join(v.VolumeInfo.Authors, ", "), extra)
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}
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}
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}
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