Youtube Analytics API PHP Invalid query. Query did not conform to the expectations

Question

I'm trying to make some analytics query from server to server. I'm using laravel with https://github.com/google/google-api-php-client library.

This is the code I'm using:

    $client = new Google_Client();
$key = file_get_contents(storage_path('key.p12'));
$cred = new Google_Auth_AssertionCredentials(
        '***@developer.gserviceaccount.com', array('https://www.googleapis.com/auth/youtube.readonly', 'https://www.googleapis.com/auth/yt-analytics.readonly'), $key);
$client->setAssertionCredentials($cred);
if ($client->getAuth()->isAccessTokenExpired()) {
    $client->getAuth()->refreshTokenWithAssertion($cred);
}

Session::put('service_token', $client->getAccessToken());


  $service = new Google_Service_YouTubeAnalytics($client);
  $id = 'channel==MINE';
  $start_date = '2014-05-01';
  $end_date = '2014-06-30';

  $optparams = array(
  'dimensions' => 'day',
  'sort' => 'day,-views'
  );

  $metric = 'views,estimatedMinutesWatched';

  $api = $service->reports->query($id, $start_date, $end_date, $metric, $optparams);

  $service = new Google_Service_YouTubeAnalytics($client);
  $id = 'channel==MINE';
  $start_date = '2014-05-01';
  $end_date = '2014-06-30';

  $optparams = array(
  'dimensions' => 'day',
  'sort' => 'day,-views'
  );

  $metric = 'views,comments,favoritesAdded,likes,dislikes,estimatedMinutesWatched,averageViewDuration';//'views,estimatedMinutesWatched';

  $api = $service->reports->query($id, $start_date, $end_date, $metric, $optparams);

My problem is that the authentication is working just fine, but I can't get the analytics query get to work, I'm getting the following error:

Error calling GET https://www.googleapis.com/youtube/analytics/v1/reports?ids=channel%3D%3DMINE&start-date=2014-05-01&end-date=2014-06-30&metrics=views%2CestimatedMinutesWatched&dimensions=day&sort=day%2C-views: (400) Invalid query. Query did not conform to the expectations. 

Even though the same exact query is working in the API explorer: https://developers.google.com/apis-explorer/#p/youtubeAnalytics/v1/youtubeAnalytics.reports.query?ids=channel%253D%253DMINE&start-date=2014-05-01&end-date=2014-06-30&metrics=views%252CestimatedMinutesWatched&dimensions=day&sort=day%252C-views&_h=1&

Any idea?

Answer 1

I tested your query and it's working fine, but apparently YouTube does not support service accounts. The documentation says it should return a 403 in this case, but for some reason it's returning 400.

Answer 2

You need to add a Google API key

https://www.googleapis.com/youtube/analytics/v1/reports?ids=channel%3D%3DMINE&start-date=2014-05-01&end-date=2014-06-30&metrics=views%2CestimatedMinutesWatched&dimensions=day&sort=day%2Cviews&key={YOUR_API_KEY}

also if you look at your string you have type error on the end where "-views" should be just "views" without dash You can use Google automated tool to generate a valid link.

https://developers.google.com/youtube/analytics/v1/