dataPreperation.php

<?php
if(isset($_POST['normalUser']))
{
    if($_POST['normalUser'] == true)
    {
        require("constances.php");

        $channel_file = fopen("included_channels.json","r");
        $channels = json_decode(fread($channel_file,filesize("included_channels.json")));
        fclose($channel_file);
    
        $data = Array();
        for($i = 0; $i < sizeof($channels); $i++)
        {
            array_push($data,Array());
            array_push($data[$i],$channels[$i]->title,$channels[$i]->id,$channels[$i]->uploads);
            $api_call = curl_init("https://youtube.googleapis.com/youtube/v3/playlistItems?part=snippet&key=".YOUTUBEAPIKEY."&playlistId=".$data[$i][2]."&maxResults=13");
            curl_setopt($api_call, CURLOPT_HEADER, 0);
            curl_setopt($api_call, CURLOPT_RETURNTRANSFER, 1);
            $response = json_decode(curl_exec($api_call));
            curl_close($api_call);
            for($j = 0; $j < sizeof($response->items); $j++)
            {
                $id = Array($response->items[$j]->snippet->resourceId->videoId,$response->items[$j]->snippet->thumbnails->medium->url,$response->items[$j]->snippet->title);
                array_push($data[$i],$id);
            }
        }
        echo json_encode($data);
    } else echo "Error";
} else header("Location: error.html");
?>