<?php
///////////////////////////////////////////////////////////////////////////

require_once 'lib/media_url.php';
require_once 'lib/tv/epg_iterator.php';
require_once 'lib/tv/tv.php';
require_once 'lib/user_input_handler_registry.php';
require_once 'lib/action_factory.php';
require_once 'lib/control_factory.php';

class DefaultDunePlugin implements DunePlugin
{
    private $screens;

    protected $tv;
    protected $vod;

    ///////////////////////////////////////////////////////////////////////

    protected function __construct()
    {
        $this->screens = array();
    }

    ///////////////////////////////////////////////////////////////////////
    //
    // Screen support.
    //
    ///////////////////////////////////////////////////////////////////////

    protected function add_screen($scr)
    {
        if (isset($this->screens[$scr->get_id()]))
        {
            hd_print("Error: screen (id: " . $scr->get_id() . ") already registered.");
            throw new Exception('Screen already registered');
        }

        $this->screens[$scr->get_id()] = $scr;
    }

    ///////////////////////////////////////////////////////////////////////

    protected function get_screen_by_id($screen_id)
    {
        if (isset($this->screens[$screen_id]))
            return $this->screens[$screen_id];

        hd_print("Error: no screen with id '$screen_id' found.");
        throw new Exception('Screen not found');
    }

    ///////////////////////////////////////////////////////////////////////////

    protected function get_screen_by_url($media_url)
    {
        $screen_id = 
            isset($media_url->screen_id) ?
            $media_url->screen_id :
            $media_url->get_raw_string();

        return $this->get_screen_by_id($screen_id);
    }

    ///////////////////////////////////////////////////////////////////////////
    //
    // Folder support.
    //
    ///////////////////////////////////////////////////////////////////////

    public function get_folder_view($media_url_str, &$plugin_cookies)
    {
        $media_url = MediaURL::decode($media_url_str);

        return
            $this->
                get_screen_by_url($media_url)->
                    get_folder_view($media_url, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////////

    public function get_next_folder_view($media_url_str, &$plugin_cookies)
    {
        $media_url = MediaURL::decode($media_url_str);

        return
            $this->
                get_screen_by_url($media_url)->
                    get_next_folder_view($media_url, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////////

    public function get_regular_folder_items($media_url_str, $from_ndx,
        &$plugin_cookies)
    {
        $media_url = MediaURL::decode($media_url_str);

        return $this->get_screen_by_url($media_url)->
            get_folder_range($media_url, $from_ndx, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////
    //
    // IPTV channels support (TV support).
    //
    ///////////////////////////////////////////////////////////////////////

    public function get_tv_info($media_url_str, &$plugin_cookies)
    {
        if (is_null($this->tv))
            throw new Exception('TV is not supported');

        $media_url = MediaURL::decode($media_url_str);

        return $this->tv->get_tv_info($media_url, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////

    public function get_tv_stream_url($playback_url, &$plugin_cookies)
    { 
        if (is_null($this->tv))
            throw new Exception('TV is not supported');

        return $this->tv->get_tv_stream_url($playback_url, $plugin_cookies);
    }
    
    ///////////////////////////////////////////////////////////////////////

    public function get_tv_playback_url($channel_id, $archive_ts, $protect_code, &$plugin_cookies)
    {
        if (is_null($this->tv))
            throw new Exception('TV is not supported');

        return $this-> tv->get_tv_playback_url($channel_id, $archive_ts, $protect_code, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////

    public function get_day_epg($channel_id, $day_start_ts, &$plugin_cookies)
    {
        if (is_null($this->tv))
            throw new Exception('TV is not supported');

        return $this->tv->get_day_epg($channel_id, $day_start_ts, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////

    public function change_tv_favorites($fav_op_type, $channel_id, &$plugin_cookies)
    {
        if (is_null($this->tv))
            throw new Exception('TV is not supported');

        return $this->tv->change_tv_favorites($fav_op_type, $channel_id, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////
    //
    // VOD support.
    //
    ///////////////////////////////////////////////////////////////////////

    public function get_vod_info($media_url_str, &$plugin_cookies)
    {
        if (is_null($this->vod))
            throw new Exception('VOD is not supported');

        $media_url = MediaURL::decode($media_url_str);

        return $this->vod->get_vod_info($media_url, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////

    public function get_vod_stream_url($playback_url, &$plugin_cookies)
    {
        if (is_null($this->vod))
            throw new Exception('VOD is not supported');

        return $this->vod->get_vod_stream_url($playback_url, $plugin_cookies);
    }

    ///////////////////////////////////////////////////////////////////////
    //
    // Misc.
    //
    ///////////////////////////////////////////////////////////////////////

    public function handle_user_input(&$user_input, &$plugin_cookies)
    {
        return UserInputHandlerRegistry::get_instance()->handle_user_input(
            $user_input, $plugin_cookies);
    }
}

///////////////////////////////////////////////////////////////////////////
?>