function cleanupTokens()

in cloud-functions/functions/index.js [116:132]

• 15 lines of code
• 4 McCabe index (conditional complexity)

function cleanupTokens(response, tokens) {
  // For each notification we check if there was an error.
  const tokensDelete = [];
  response.results.forEach((result, index) => {
    const error = result.error;
    if (error) {
      functions.logger.error('Failure sending notification to', tokens[index], error);
      // Cleanup the tokens who are not registered anymore.
      if (error.code === 'messaging/invalid-registration-token' ||
          error.code === 'messaging/registration-token-not-registered') {
        const deleteTask = admin.firestore().collection('fcmTokens').doc(tokens[index]).delete();
        tokensDelete.push(deleteTask);
      }
    }
  });
  return Promise.all(tokensDelete); 
}