<?php
require_once 'includes/globals.php';
require_once 'vendor/autoload.php';

use DJMixHosting\RSS;
use DJMixHosting\DJ;
use DJMixHosting\Mixshow;
use DJMixHosting\Genre;

// Use your site configuration variables (defined in config.php)
$serverName = $config['app']['name'];
$serverUrl  = $config['app']['url'];

// Set default channel information
$channelTitle       = $serverName;
$channelDescription = "RSS feed for " . $serverName;

// Instantiate the RSS object
$rss = new RSS($channelTitle, $serverUrl, $channelDescription);

// Check if a mode and slug are provided via the rewritten URLs.
if (isset($_GET['mode']) && isset($_GET['slug'])) {
    $mode = $_GET['mode'];
    $slug = $_GET['slug'];

    if ($mode === 'dj') {
        // Load DJ using the new class.
        $dj = new DJ($slug, $db);
        if ($dj->getID() > 0) {
            $channelTitle = $dj->getName() . " | " . $serverName;
            $rss = new RSS($channelTitle, $serverUrl, "RSS feed for " . $channelTitle);

            // Retrieve mixes for the DJ.
            $mixes = $dj->getDJMixes();
            foreach ($mixes as $mix) {
                $title       = $mix['title'] ?? (isset($mix['details']['title']) ? $mix['details']['title'] : "New Untitled Mix");
                $description = (!empty($mix['description'])) ? $mix['description'] :
                    (isset($mix['details']['description']) ? $mix['details']['description'] : $title . " is a mix hosted on " . $serverName);
                $link        = $serverUrl . 'mix/' . $mix['slug'] . '/';
                $pubDate     = $mix['recorded'] ?? ($mix['created'] ?? '2008-01-01 12:00:00');
                $rss->addItem($title, $description, $link, $pubDate);
            }
        }
    } elseif ($mode === 'mixshow') {
        // Load Mixshow using the new class.
        $mixshow = new Mixshow($slug, $db);
        if ($mixshow->get_id() > 0) {
            $channelTitle = $mixshow->get_name() . " | " . $serverName;
            $rss = new RSS($channelTitle, $serverUrl, "RSS feed for " . $channelTitle);

            // The mixshow object returns an array of mix IDs.
            $mixIDs = $mixshow->get_mixes(); // Each element should contain 'mix_id'
            foreach ($mixIDs as $mixData) {
                $mixID = $mixData['mix_id'];
                // getMixByID() should be defined to return a mix’s details as an associative array.
                $mix = getMixByID($mixID);
                if ($mix) {
                    $title       = $mix['title'] ?? (isset($mix['details']['title']) ? $mix['details']['title'] : "New Untitled Mix");
                    $description = (!empty($mix['description'])) ? $mix['description'] :
                        (isset($mix['details']['description']) ? $mix['details']['description'] : $title . " is a mix hosted on " . $serverName);
                    $link        = $serverUrl . 'mix/' . $mix['slug'] . '/';
                    $pubDate     = $mix['recorded'] ?? ($mix['created'] ?? '2008-01-01 12:00:00');
                    $rss->addItem($title, $description, $link, $pubDate);
                }
            }
        }
    } elseif ($mode === 'genre') {
        // For genres, we assume helper functions exist.
        $genre = getGenreSlug($slug); // Should return an associative array with at least 'id' and 'genre'
        if (!empty($genre['id'])) {
            $channelTitle = $genre['genre'] . " | " . $serverName;
            $rss = new RSS($channelTitle, $serverUrl, "RSS feed for " . $channelTitle);

            // getMoreMixesByGenre() should return an array of mixes.
            $mixes = array_reverse(getMoreMixesByGenre($genre['id']));
            foreach ($mixes as $mix) {
                $title       = $mix['title'] ?? (isset($mix['details']['title']) ? $mix['details']['title'] : "New Untitled Mix");
                $description = (!empty($mix['description'])) ? $mix['description'] :
                    (isset($mix['details']['description']) ? $mix['details']['description'] : $title . " is a mix hosted on " . $serverName);
                $link        = $serverUrl . 'mix/' . $mix['slug'] . '/';
                $pubDate     = $mix['recorded'] ?? ($mix['created'] ?? '2008-01-01 12:00:00');
                $rss->addItem($title, $description, $link, $pubDate);
            }
        }
    } else {
        // Unknown mode – fallback to all mixes.
        $mixes = getAllMix();
        foreach ($mixes as $mix) {
            $title       = $mix['title'] ?? (isset($mix['details']['title']) ? $mix['details']['title'] : "New Untitled Mix");
            $description = (!empty($mix['description'])) ? $mix['description'] :
                (isset($mix['details']['description']) ? $mix['details']['description'] : $title . " is a mix hosted on " . $serverName);
            $link        = $serverUrl . 'mix/' . $mix['slug'] . '/';
            $pubDate     = $mix['recorded'] ?? ($mix['created'] ?? '2008-01-01 12:00:00');
            $rss->addItem($title, $description, $link, $pubDate);
        }
    }
} else {
    // No mode provided – default to a feed of all mixes.
    $mixes = getAllMix();
    foreach ($mixes as $mix) {
        $title       = $mix['title'] ?? (isset($mix['details']['title']) ? $mix['details']['title'] : "New Untitled Mix");
        $description = (!empty($mix['description'])) ? $mix['description'] :
            (isset($mix['details']['description']) ? $mix['details']['description'] : $title . " is a mix hosted on " . $serverName);
        $link        = $serverUrl . 'mix/' . $mix['slug'] . '/';
        $pubDate     = $mix['recorded'] ?? ($mix['created'] ?? '2008-01-01 12:00:00');
        $rss->addItem($title, $description, $link, $pubDate);
    }
}

// Set the appropriate header and output the RSS XML.
header("Content-type: application/rss+xml");
echo $rss->generateXML();