/
google.go
83 lines (67 loc) · 2.12 KB
/
google.go
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package googleutil
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
"google.golang.org/api/option"
"google.golang.org/api/sheets/v4"
)
func GetOAuth2Config(credentialsJSONFilePath string, scope ...string) (*oauth2.Config, error) {
b, err := ioutil.ReadFile(credentialsJSONFilePath)
if err != nil {
return nil, fmt.Errorf("Unable to read client secret file: %v", err)
}
config, err := google.ConfigFromJSON(b, scope...)
if err != nil {
return nil, fmt.Errorf("Unable to parse client secret file to config: %v", err)
}
return config, nil
}
func GetTokenFromWeb(config *oauth2.Config) (*oauth2.Token, error) {
authURL := config.AuthCodeURL("", oauth2.AccessTypeOffline)
fmt.Printf("Go to the following link in your browser then type the "+
"authorization code: \n%v\n", authURL)
var authCode string
if _, err := fmt.Scan(&authCode); err != nil {
return nil, fmt.Errorf("Unable to read authorization code: %v", err)
}
token, err := config.Exchange(context.TODO(), authCode)
if err != nil {
return nil, fmt.Errorf("Unable to retrieve token from web: %v", err)
}
return token, nil
}
func GetTokenFromFile(path string) (*oauth2.Token, error) {
b, err := ioutil.ReadFile(path)
if err != nil {
return nil, fmt.Errorf("Unable to read token file: %v", err)
}
token := &oauth2.Token{}
err = json.Unmarshal(b, &token)
if err != nil {
return nil, fmt.Errorf("Unable to decode token file: %v", err)
}
return token, nil
}
func SaveToken(path string, token *oauth2.Token) error {
tokenJSON, err := json.Marshal(token)
if err != nil {
return fmt.Errorf("Unable to encode token to json: %v", err)
}
err = ioutil.WriteFile(path, tokenJSON, 0600)
if err != nil {
return fmt.Errorf("Unable to save token.json: %v", err)
}
return nil
}
func GetGoogleSheetsService(ctx context.Context, config *oauth2.Config, token *oauth2.Token) (*sheets.Service, error) {
client := config.Client(ctx, token)
srv, err := sheets.NewService(ctx, option.WithHTTPClient(client))
if err != nil {
return nil, fmt.Errorf("Unable to retrieve Sheets client: %v", err)
}
return srv, nil
}