callback.php

   1 <?php
   2
   3     require 'secrets.php';
   4
   5     const BASE_URL = 'https://api.spotify.com/v1/';
   6     const AUTH_URL = 'https://accounts.spotify.com/';
   7     #TODO correctly get tracks only for current month as well as only new tracks
   8     const MONTHS = [];
   9
  10     $code = $_GET['code'];
  11
  12     if (!$code) {
  13         exit(1);
  14     }
  15
  16     #Handle Spotify Token Authorization
  17
  18     $token_data = [
  19         'grant_type' => 'authorization_code',
  20         'code' => $code,
  21         'redirect_uri' => REDIRECT_URI
  22     ];
  23     $token_data = http_build_query($token_data);
  24
  25     $token_opts = [
  26         'http' => [
  27             'method' => 'POST',
  28             /*'header' => "Content-type: application/x-www-form-urlencoded\r\n"
  29                      . "Content-Length: " . strlen($token_data) . "\r\n"
  30                      . "Authorization: Basic " . base64_encode('868e2cba00de4819900dd8a647a7ba7d:' . CLIENT_SECRET) . "\r\n",*/
  31             'header' => "Authorization: Basic " . base64_encode('868e2cba00de4819900dd8a647a7ba7d:' . CLIENT_SECRET) . " \r\n",
  32             'content' => $token_data
  33         ]
  34     ];
  35
  36     $token_context = stream_context_create($token_opts);
  37
  38     $spot_req = file_get_contents(AUTH_URL . 'api/token', false, $token_context);
  39
  40     echo $spot_req;
  41     $spot_json = json_decode($spot_req, true);
  42
  43     $spot_token = $spot_json['access_token'];
  44
  45     $me_opts = [
  46         'http' => [
  47             'method' => 'GET',
  48             'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
  49         ]
  50     ];
  51
  52     $me_context = stream_context_create($me_opts);
  53
  54     $me_resp = file_get_contents(BASE_URL . 'me', false, $me_context);
  55     $me_json = json_decode($me_resp, true);
  56     $me_id = $me_json['id'];
  57
  58     echo '<br />';
  59     print_r($me_resp);
  60
  61     $html = file_get_contents('https://www.marketplace.org/latest-music');
  62     $DOM = new DOMDocument;
  63     $DOM->loadHTML($html);
  64     $headers = $DOM->getElementsByTagName('h2');
  65     $divs = $DOM->getElementsByTagName('div');
  66
  67     $date_headers = [];
  68     $music_group = [];
  69
  70     foreach ($headers as $header) {
  71         if ($header->hasAttribute('class') && $header->getAttribute('class') === 'river--hed') {
  72             $date_headers[] = $header->nodeValue;
  73         }
  74     }
  75     foreach ($divs as $div) {
  76         if ($div->hasAttribute('class') && $div->getAttribute('class') === 'episode-music') {
  77             $songs = [];
  78             foreach ($div->childNodes as $row) {
  79                 $children = $row->childNodes[0]->childNodes;
  80                 $songs[] = [
  81                     'title' => $children[0]->nodeValue,
  82                     'artist' => $children[1]->nodeValue
  83                 ];
  84             }
  85             $music_group[] = $songs;
  86         }
  87     }
  88
  89     echo '<br />';
  90
  91     print_r($date_headers);
  92
  93     echo '<br />';
  94     print_r($music_group);
  95
  96     #TODO Check if this month's playlist exists first
  97
  98     $playlist_data = [
  99         'name' => 'March Marketplace Tracks'
 100     ];
 101
 102     $playlist_opts = [
 103         'http' => [
 104             'method' => 'POST',
 105             'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
 106                      . 'Content-Type application/json \r\n',
 107             'content' => json_encode($playlist_data)
 108         ]
 109     ];
 110
 111     $playlist_context = stream_context_create($playlist_opts);
 112
 113     $playlist_req = file_get_contents(BASE_URL . 'users/' . $me_id . '/playlists', false, $playlist_context);
 114
 115     $playlist_json = json_decode($playlist_req, true);
 116
 117     $playlist_id = $playlist_json['id'];
 118
 119     echo '<br />' . $playlist_id;
 120
 121     $uris = [];
 122
 123     for ($i = count($music_group) - 1; $i >= 0; $i--) {
 124
 125     $track_opts = [
 126         'http' => [
 127             'method' => 'GET',
 128             'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
 129         ]
 130     ];
 131
 132     $track_context = stream_context_create($track_opts);
 133
 134         foreach ($music_group[$i] as $song_info) {
 135
 136             $track_search_url = BASE_URL . 'search?q=track:' . urlencode($song_info['title']) . '+artist:' . urlencode($song_info['artist']) . '&type=track';
 137
 138             echo '<br />' . $track_search_url;
 139             echo '<br />';
 140
 141             $track_req = file_get_contents($track_search_url, false, $track_context);
 142             $track_json = json_decode($track_req, true);
 143
 144             print_r($track_json);
 145
 146             $uris[] = $track_json['tracks']['items'][0]['uri'];
 147
 148             #rate limit
 149             sleep(1);
 150
 151         }
 152
 153     }
 154
 155     $update_data = [
 156         'uris' => array_values(array_filter($uris, function($uri) {return !is_null($uri);} ))
 157     ];
 158
 159     echo '<br /> update_data <br />';
 160     print_r($update_data);
 161
 162     $update_opts = [
 163         'http' => [
 164             'method' => 'POST',
 165             'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
 166                      . 'Content-Type application/json \r\n',
 167             'content' => json_encode($update_data)
 168         ]
 169     ];
 170
 171     $update_context = stream_context_create($update_opts);
 172     $update_url = BASE_URL . 'users/' . $me_id . '/playlists/' . $playlist_id . '/tracks';
 173     echo '<br />' . $update_url;
 174     echo '<br />';
 175     echo '<br />' . count($uris);
 176     echo '<br />';
 177     print_r(json_encode($update_data));
 178     $update_req = file_get_contents(BASE_URL . 'users/' . $me_id . '/playlists/' . $playlist_id . '/tracks', false, $update_context);
 179