PHP How to upload to Youtube user's channel - php

Question

Need to make user's authorizations so server will upload videos to users channels.
Authentication part:
$client = new Google_Client();
$client->setAuthConfigFile(PROPPATH.'/inc/client_secret.json');
$client->setRedirectUri('https://back url');
$client->setScopes('https://www.googleapis.com/auth/youtube');
$client->setAccessType('offline');
$credentialsPath = PROPPATH.'/youtube_auth/user_'.get_current_user_id().'.json';
if (file_exists($credentialsPath)) {
$accessToken = file_get_contents($credentialsPath);
} else {
$authUrl = $client->createAuthUrl();
if(!isset($_GET['code'])) {
echo '<script>window.location = "'.$authUrl.'";</script>';
} else {
$authCode = $_GET['code'];
$accessToken = $client->authenticate($authCode);
file_put_contents($credentialsPath, $accessToken);
}
Authentication seems like works and saves some key.
2nd part, trying upload video:
$client = new Google_Client();
$client->setAuthConfigFile(PROPPATH.'/inc/client_secret.json');
$client->setScopes('https://www.googleapis.com/auth/youtube');
$youtube = new Google_Service_YouTube($client);
$client->setAccessToken(file_get_contents(PROPPATH.'/youtube_auth/user_2.json'));
$client->setAccessType('offline');
if ($client->getAccessToken()) {
$video = new Google_Service_YouTube_Video();
$chunkSizeBytes = 1 * 1024 * 1024;
$client->setDefer(true);
$insertRequest = $youtube->videos->insert("", $video);
$media = new Google_Http_MediaFileUpload(
$client,
$insertRequest,
'video/*',
null,
true,
$chunkSizeBytes
);
$media->setFileSize(filesize($videoPath));
...
And i'm getting error:
A service error occurred: { "error": { "errors": [ { "domain":
"global", "reason": "authError", "message": "Invalid Credentials",
"locationType": "header", "location": "Authorization" } ], "code":
401, "message": "Invalid Credentials" } }
What i'm missing?

Answer 1

401: Invalid Credentials
Invalid authorization header. The access token you're using is either
expired or invalid.
{
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization",
}
],
"code": 401,
"message": "Invalid Credentials"
}
}
Suggested action: Refresh the access token using the long-lived
refresh token.