public static Connection Create(GoogleDriveUserCredential credential)
{
Connection connection = new Connection();
connection.Connect(credential);
if (!connection.IsConnected())
{
throw new BusinessRuleException("Cannot connect to GoogleDrive service.");
}
return(connection);
}
private void Connect(GoogleDriveUserCredential clientSecretsData)
{
if (String.IsNullOrEmpty(clientSecretsData.ClientId))
{
throw new ArgumentNullException("ClientID", "ClientID wasn't specified.");
}
if (String.IsNullOrEmpty(clientSecretsData.ClientSecret))
{
throw new ArgumentNullException("ClientSecret", "ClientSecret wasn't specified.");
}
if (String.IsNullOrEmpty(clientSecretsData.DataStore))
{
throw new ArgumentNullException("DataStore", "DataStore wasn't specified.");
}
if (!Directory.Exists(clientSecretsData.DataStore))
{
throw new DirectoryNotFoundException($"{clientSecretsData.DataStore} directory is either invalid or wasn't found.");
}
UserCredential cr = GoogleWebAuthorizationBroker.AuthorizeAsync(
new ClientSecrets()
{
ClientId = clientSecretsData.ClientId, ClientSecret = clientSecretsData.ClientSecret
},
Connection.Scopes,
Connection.UserIdentifier,
CancellationToken.None,
new FileDataStore(clientSecretsData.DataStore, true)).Result;
credential = cr;
Service = new DriveService(new BaseClientService.Initializer()
{
HttpClientInitializer = credential,
ApplicationName = Connection.ApplicationName,
});
}