<?php

declare(strict_types=1);

class TVMazeSeriesBridge extends BridgeAbstract
{
    const NAME = 'TVMaze Series Bridge';
    const URI = 'https://www.tvmaze.com';
    const DESCRIPTION = 'Returns episodes of a TV series from TVMaze. Works with Amazon Prime, Netflix and other streaming services.';
    const MAINTAINER = 'Akamaru';
    const CACHE_TIMEOUT = 3600; // 1 hour

    const PARAMETERS = [
        'Series' => [
            'show_id' => [
                'name' => 'TVMaze Show ID',
                'type' => 'number',
                'required' => true,
                'exampleValue' => '54421',
                'title' => 'Find the Show ID in the URL: tvmaze.com/shows/ID/name'
            ],
            'limit' => [
                'name' => 'Maximum number of episodes',
                'type' => 'number',
                'required' => false,
                'defaultValue' => 50
            ]
        ]
    ];

    private $showTitle = '';
    private $showUrl = '';
    private $officialSite = '';
    private $webChannelName = '';

    public function getIcon()
    {
        return 'https://www.google.com/s2/favicons?domain=www.tvmaze.com&sz=32';
    }

    public function getName()
    {
        if (!empty($this->showTitle)) {
            $suffix = !empty($this->webChannelName) ? $this->webChannelName : 'TVMaze';
            return $this->showTitle . ' - ' . $suffix;
        }
        return parent::getName();
    }

    public function getURI()
    {
        // Prefer officialSite (e.g. Amazon Prime link)
        if (!empty($this->officialSite)) {
            return $this->officialSite;
        }

        if (!empty($this->showUrl)) {
            return $this->showUrl;
        }

        $showId = $this->getInput('show_id');
        if (!empty($showId)) {
            return self::URI . '/shows/' . $showId;
        }

        return self::URI;
    }

    public function collectData()
    {
        $showId = $this->getInput('show_id');
        $limit = $this->getInput('limit') ?? 50;

        if (empty($showId)) {
            returnClientError('Show ID is required.');
        }

        // First fetch show information
        $showUrl = 'https://api.tvmaze.com/shows/' . urlencode((string)$showId);
        $showJson = getContents($showUrl);
        $showData = json_decode($showJson, true);

        if (!$showData) {
            returnServerError('Show not found. Please check the Show ID.');
        }

        $this->showTitle = $showData['name'] ?? 'Unknown Series';
        $this->showUrl = $showData['url'] ?? '';
        $this->officialSite = $showData['officialSite'] ?? '';
        $this->webChannelName = $showData['webChannel']['name'] ?? $showData['network']['name'] ?? '';

        // Fetch episodes
        $episodesUrl = 'https://api.tvmaze.com/shows/' . urlencode((string)$showId) . '/episodes';
        $episodesJson = getContents($episodesUrl);
        $episodes = json_decode($episodesJson, true);

        if (!$episodes || !is_array($episodes)) {
            returnServerError('No episodes found.');
        }

        // Sort by season and episode (newest first for feed)
        usort($episodes, function ($a, $b) {
            // First by season, then by episode (descending)
            if ($a['season'] !== $b['season']) {
                return $b['season'] - $a['season'];
            }
            return $b['number'] - $a['number'];
        });

        // Limit the number of episodes
        $episodes = array_slice($episodes, 0, (int)$limit);

        foreach ($episodes as $episode) {
            $item = [];

            // Title: "Series Title S01E01: Episode Title"
            $seasonNum = $episode['season'] ?? 1;
            $episodeNum = $episode['number'] ?? 0;
            $episodeTitle = $episode['name'] ?? 'Unknown Episode';

            $item['title'] = sprintf(
                '%s S%02dE%02d: %s',
                $this->showTitle,
                $seasonNum,
                $episodeNum,
                $episodeTitle
            );

            // Episode URL (prefer streaming service officialSite)
            if (!empty($this->officialSite)) {
                $item['uri'] = $this->officialSite;
            } else {
                $item['uri'] = $episode['url'] ?? self::URI;
            }

            // Author: Streaming service name
            if (!empty($this->webChannelName)) {
                $item['author'] = $this->webChannelName;
            }

            // Unique ID
            $item['uid'] = 'tvmaze-' . ($episode['id'] ?? $showId . '-' . $seasonNum . '-' . $episodeNum);

            // Timestamp from airdate
            if (!empty($episode['airdate'])) {
                $timestamp = strtotime($episode['airdate']);
                if ($timestamp !== false) {
                    $item['timestamp'] = $timestamp;
                }
            }

            // Content: Image + Description + Details
            $content = '';

            // Thumbnail
            $imageUrl = $episode['image']['original'] ?? $episode['image']['medium'] ?? null;
            if ($imageUrl) {
                $content .= '<img src="' . htmlspecialchars($imageUrl) . '" alt="' . htmlspecialchars($episodeTitle) . '" /><br>';
                $item['enclosures'] = [$imageUrl];
            }

            // Description
            $summary = $episode['summary'] ?? '';
            if (!empty($summary)) {
                // TVMaze returns HTML, keep it for content
                $content .= '<p>' . $summary . '</p>';
            }

            $item['content'] = $content;

            $this->items[] = $item;
        }
    }

    public function detectParameters($url)
    {
        // URL-Format: https://www.tvmaze.com/shows/54421/lol-last-one-laughing
        if (preg_match('#tvmaze\.com/shows/(\d+)#i', $url, $matches)) {
            return [
                'show_id' => $matches[1]
            ];
        }

        return null;
    }
}