116 lines
2.9 KiB
Go
116 lines
2.9 KiB
Go
package youtube
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import (
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"net/url"
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"os"
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"os/user"
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"path/filepath"
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"golang.org/x/net/context"
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"golang.org/x/oauth2"
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"golang.org/x/oauth2/google"
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"google.golang.org/api/option"
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"google.golang.org/api/youtube/v3"
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)
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func getClient(ctx context.Context, config *oauth2.Config) *http.Client {
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cacheFile, err := tokenCacheFile()
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if err != nil {
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log.Fatalf("Unable to get path to cached credential file. %v", err)
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}
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tok, err := tokenFromFile(cacheFile)
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if err != nil {
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tok = getTokenFromWeb(config)
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saveToken(cacheFile, tok)
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}
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return config.Client(ctx, tok)
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}
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func getTokenFromWeb(config *oauth2.Config) *oauth2.Token {
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authURL := config.AuthCodeURL("state-token", oauth2.AccessTypeOffline)
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fmt.Printf("Go to the following link in your browser then type the "+
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"authorization code: \n%v\n", authURL)
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var code string
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if _, err := fmt.Scan(&code); err != nil {
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log.Fatalf("Unable to read authorization code %v", err)
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}
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tok, err := config.Exchange(context.Background(), code)
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if err != nil {
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log.Fatalf("Unable to retrieve token from web %v", err)
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}
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return tok
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}
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func tokenCacheFile() (string, error) {
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usr, err := user.Current()
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if err != nil {
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return "", err
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}
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tokenCacheDir := filepath.Join(usr.HomeDir, ".credentials")
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err = os.MkdirAll(tokenCacheDir, 0o700)
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if err != nil {
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return "", err
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}
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return filepath.Join(tokenCacheDir,
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url.QueryEscape("youtube-go-quickstart.json")), err
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}
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func tokenFromFile(file string) (*oauth2.Token, error) {
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f, err := os.Open(file)
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handleError(err, "Error opening file")
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t := &oauth2.Token{}
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err = json.NewDecoder(f).Decode(t)
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defer f.Close()
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return t, err
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}
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func saveToken(file string, token *oauth2.Token) {
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fmt.Printf("Saving credential file to: %s\n", file)
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f, err := os.OpenFile(file, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0o600)
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if err != nil {
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log.Fatalf("Unable to cache oauth token: %v", err)
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}
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defer f.Close()
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err = json.NewEncoder(f).Encode(token)
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handleError(err, "Error encoding token")
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}
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func handleError(err error, message string) {
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if message == "" {
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message = "Error making API call"
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}
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if err != nil {
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log.Fatalf(message+": %v", err.Error())
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}
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}
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func Search(query string) string {
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ctx := context.Background()
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confDir, _ := os.UserConfigDir()
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b, err := os.ReadFile(filepath.Join(confDir, "gospt", "client_secret.json"))
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if err != nil {
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log.Fatalf("Unable to read client secret file: %v", err)
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}
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config, err := google.ConfigFromJSON(b, youtube.YoutubeReadonlyScope)
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if err != nil {
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log.Fatalf("Unable to parse client secret file to config: %v", err)
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}
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client := getClient(ctx, config)
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service, err := youtube.NewService(ctx, option.WithHTTPClient(client))
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handleError(err, "Error creating YouTube client")
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call := service.Search.List([]string{"snippet"})
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call.Q(query)
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response, err := call.Do()
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handleError(err, "")
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return fmt.Sprintf("https://www.youtube.com/watch?v=%s", response.Items[0].Id.VideoId)
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}
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