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/public/storage
/storage/*.key
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Homestead.json
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npm-debug.log
yarn-error.log
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public function sendPushNotification()
    {

        $credentialsFilePath = "firebase/fcm.json";
        $client = new Google_Client();
        $client->setAuthConfig($credentialsFilePath);
        $client->addScope('https://www.googleapis.com/auth/firebase.messaging');
        $apiurl = 'https://fcm.googleapis.com/v1/projects/<PROJECT_ID>/messages:send';
        $client->refreshTokenWithAssertion(); //refreshTokenWithAssertion();
        $token = $client->getAccessToken();
        $access_token = $token['access_token'];

        $headers = [
            "Authorization: Bearer $access_token",
            'Content-Type: application/json'
        ];
        $test_data = [
            "title" => "TITLE_HERE",
            "description" => "DESCRIPTION_HERE",
        ];

        $data['data'] =  $test_data;

        $data['token'] = $user['fcm_token']; // Retrive fcm_token from users table

        $payload['message'] = $data;
        $payload = json_encode($payload);
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $apiurl);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
        curl_exec($ch);
        $res = curl_close($ch);
        if ($res) {
            return response()->json([
                'message' => 'Notification has been Sent'
            ]);
        }
    }