<?php
declare(strict_types = 1);

require 'secrets.php';
require 'mpfuncs.php';

const BASE_URL = 'https://api.spotify.com/v1/';
const AUTH_URL = 'https://accounts.spotify.com/';
const DATE_FILE = 'prev_date.txt';
const MONTHS = [
    '01' => 'January',
    '02' => 'February',
    '03' => 'March',
    '04' => 'April',
    '05' => 'May',
    '06' => 'June',
    '07' => 'July',
    '08' => 'August',
    '09' => 'September',
    '10' => 'October',
    '11' => 'November',
    '12' => 'December',
];

$code = $_GET['code'];

// Get month and year user is requesting
$state = explode(':', $_GET['state']);


if (!$code) {
    exit(1);
}

#print_r($today);

#Handle Spotify Token Authorization

$token_data = [
    'grant_type' => 'authorization_code',
    'code' => $code,
    'redirect_uri' => REDIRECT_URI
];
$token_data = http_build_query($token_data);

$token_opts = [
    'http' => [
        'method' => 'POST',
        /*'header' => "Content-type: application/x-www-form-urlencoded\r\n"
          . "Content-Length: " . strlen($token_data) . "\r\n"
          . "Authorization: Basic " . base64_encode('868e2cba00de4819900dd8a647a7ba7d:' . CLIENT_SECRET) . "\r\n",*/
        'header' => "Authorization: Basic " . base64_encode('93a6f9c0375c45d4b348157691aa24e8:' . CLIENT_SECRET) . " \r\n",
        'content' => $token_data
    ]
];

$token_context = stream_context_create($token_opts);

$spot_req = file_get_contents(AUTH_URL . 'api/token', false, $token_context);

echo $spot_req;
$spot_json = json_decode($spot_req, true);

$spot_token = $spot_json['access_token'];


$me_opts = [
    'http' => [
        'method' => 'GET',
        'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
    ]
];

$me_context = stream_context_create($me_opts);

$me_resp = file_get_contents(BASE_URL . 'me', false, $me_context);
$me_json = json_decode($me_resp, true);
$me_id = $me_json['id'];

# Check if this month's playlist exists

$playlistName = MONTHS[$state[0]] . ' ' . $state[1] . ' Marketplace Tracks';

$checkPlaylistOpts = [
    'http' => [
        'method' => 'GET',
        'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
    ]
];

$checkPlaylistContext = stream_context_create($checkPlaylistOpts);

$checkPlaylistReq = file_get_contents(BASE_URL  . 'me/playlists', false, $checkPlaylistContext);

$checkPlaylistJson = json_decode($checkPlaylistReq, true);

foreach ($checkPlaylistJson['items'] as $playlist) {
    #TODO should check if $user owns playlist
    if (!strcmp($playlistName, $playlist['name'])) {
        $playlistID = $playlist['id'];
    }
}

# Create new playlist if one does not exist
# DEVELOPMENT TEMP ALWAYS CREATE NEW PLAYLIST
#if (!$playlistID) {
    if (true) {

        $playlist_data = [
            'name' => $playlistName,
            'description' => 'A playlist of Marketplace tracks by Marketplaylister.',
        ];

        $playlist_opts = [
            'http' => [
                'method' => 'POST',
            'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
                . 'Content-Type: application/json \r\n',
            'content' => json_encode($playlist_data)
            ]
        ];

        $playlist_context = stream_context_create($playlist_opts);
        $playlist_req = file_get_contents(BASE_URL . 'users/' . $me_id . '/playlists', false, $playlist_context);
        $playlist_json = json_decode($playlist_req, true);
        $playlistID = $playlist_json['id'];


    }

    $uris = [];

    $pdo = new PDO("sqlite:mktplc.sqlite3");
    $stmt = $pdo->prepare("SELECT uri FROM songs s WHERE uri IS NOT NULL AND strftime('%m', s.date) == :month AND strftime('%Y', s.date) == :year");
    $stmt->bindParam(':month', $state[0]);
    $stmt->bindParam(':year', $state[1]);
    if ($stmt->execute()) {
        while ($row = $stmt->fetch()) {
            $uris[] = $row['uri'];
        }
    }

    $update_data = [
        'uris' => $uris,
    ];

    echo '<br /> update_data <br />';

    $update_opts = [
        'http' => [
            'method' => 'POST',
            'ignore_errors' => true,
            'header' => 'Authorization: Bearer ' . $spot_token . "\r\n"
                . 'Content-Type: application/json \r\n'
                . 'Accept: application/json \r\n',
            'content' => json_encode($update_data)
        ]
    ];

    $update_context = stream_context_create($update_opts);
    $update_url = BASE_URL . 'playlists/' . $playlistID . '/tracks';
    echo '<br />' . $update_url;
    echo '<br />';
    echo '<br />' . count($uris);
    echo '<br />';
    print_r(json_encode($update_data));
    $update_req = file_get_contents($update_url, false, $update_context);
    var_dump($update_req);