<?php

namespace nntmux\processing\tv;

use nntmux\ColorCLI;
use App\Models\Settings;
use nntmux\ReleaseImage;
use nntmux\utility\Time;
use nntmux\libraries\TraktAPI;

/**
 * Class TraktTv.
 *
 * Process information retrieved from the Trakt API.
 */
class TraktTv extends TV
{
    const MATCH_PROBABILITY = 75;

    /**
     * Client for Trakt API.
     *
     * @var TraktAPI
     */
    public $client;

    /**
     * Utility to convert Time.
     *
     * @var Time
     */
    public $time;

    /**
     * The Trakt.tv API v2 Client ID (SHA256 hash - 64 characters long string). Used for movie and tv lookups.
     * Create one here: https://trakt.tv/oauth/applications/new.
     *
     * @var array|bool|string
     */
    private $clientId;

    /**
     * List of headers to send to Trakt.tv when making a request.
     *
     * @see http://docs.trakt.apiary.io/#introduction/required-headers
     * @var array
     */
    private $requestHeaders;

    /**
     * The URL to grab the TV poster.
     *
     * @var string
     */
    public $posterUrl;

    /**
     * The URL to grab the TV fanart.
     *
     * @var string
     */
    public $fanartUrl;

    /**
     * The localized (network airing) timezone of the show.
     *
     * @var string
     */
    private $localizedTZ;

    /**
     * Construct. Set up API key.
     *
     * @param array $options Class instances.
     * @throws \Exception
     */
    public function __construct(array $options = [])
    {
        parent::__construct($options);
        $this->clientId = Settings::settingValue('APIs..trakttvclientkey');
        $this->requestHeaders = [
                'Content-Type' => 'application/json',
                'trakt-api-version' => 2,
                'trakt-api-key' => $this->clientId,
                'Content-Length' => 0,
        ];
        $this->client = new TraktAPI($this->requestHeaders);
    }

    /**
     * Main processing director function for scrapers
     * Calls work query function and initiates processing.
     *
     * @param      $groupID
     * @param      $guidChar
     * @param      $process
     * @param bool $local
     */
    public function processSite($groupID, $guidChar, $process, $local = false): void
    {
        $res = $this->getTvReleases($groupID, $guidChar, $process, parent::PROCESS_TRAKT);

        $tvcount = $res->rowCount();

        if ($this->echooutput && $tvcount > 1) {
            echo ColorCLI::header('Processing TRAKT lookup for '.number_format($tvcount).' release(s).');
        }

        if ($res instanceof \Traversable) {
            foreach ($res as $row) {
                $traktid = false;
                $this->posterUrl = $this->fanartUrl = $this->localizedTZ = '';

                // Clean the show name for better match probability
                $release = $this->parseInfo($row['searchname']);
                if (is_array($release) && $release['name'] !== '') {
                    if (in_array($release['cleanname'], $this->titleCache, false)) {
                        if ($this->echooutput) {
                            echo ColorCLI::headerOver('Title: ').
                                    ColorCLI::warningOver($release['cleanname']).
                                    ColorCLI::header(' already failed lookup for this site.  Skipping.');
                        }
                        $this->setVideoNotFound(parent::PROCESS_IMDB, $row['id']);
                        continue;
                    }

                    // Find the Video ID if it already exists by checking the title.
                    $videoId = $this->getByTitle($release['cleanname'], parent::TYPE_TV, parent::SOURCE_TRAKT);

                    // Force local lookup only
                    if ($local === true) {
                        $lookupSetting = false;
                    } else {
                        $lookupSetting = true;
                    }

                    if ($videoId === false && $lookupSetting) {

                        // If it doesn't exist locally and lookups are allowed lets try to get it.
                        if ($this->echooutput) {
                            echo ColorCLI::primaryOver('Checking Trakt for previously failed title: ').
                                    ColorCLI::headerOver($release['cleanname']).
                                    ColorCLI::primary('.');
                        }

                        // Get the show from TRAKT
                        $traktShow = $this->getShowInfo((string) $release['cleanname']);

                        if (is_array($traktShow)) {
                            $videoId = $this->add($traktShow);
                            $traktid = (int) $traktShow['trakt'];
                        }
                    } else {
                        if ($this->echooutput) {
                            echo ColorCLI::primaryOver('Found local TMDB match for: ').
                                    ColorCLI::headerOver($release['cleanname']).
                                    ColorCLI::primary('.  Attempting episode lookup!');
                        }
                        $traktid = $this->getSiteIDFromVideoID('trakt', $videoId);
                        $this->localizedTZ = $this->getLocalZoneFromVideoID($videoId);
                    }

                    if (is_numeric($videoId) && $videoId > 0 && is_numeric($traktid) && $traktid > 0) {
                        // Now that we have valid video and trakt ids, try to get the poster
                        //$this->getPoster($videoId, $traktid);

                        $seasonNo = preg_replace('/^S0*/i', '', $release['season']);
                        $episodeNo = preg_replace('/^E0*/i', '', $release['episode']);

                        if ($episodeNo === 'all') {
                            // Set the video ID and leave episode 0
                            $this->setVideoIdFound($videoId, $row['id'], 0);
                            echo ColorCLI::primary('Found TRAKT Match for Full Season!');
                            continue;
                        }

                        // Check if we have the episode for this video ID
                        $episode = $this->getBySeasonEp($videoId, $seasonNo, $episodeNo, $release['airdate']);

                        if ($episode === false && $lookupSetting) {
                            // Send the request for the episode to TRAKT
                            $traktEpisode = $this->getEpisodeInfo(
                                    $traktid,
                                    $seasonNo,
                                    $episodeNo
                            );

                            if ($traktEpisode) {
                                $episode = $this->addEpisode($videoId, $traktEpisode);
                            }
                        }

                        if ($episode !== false && is_numeric($episode) && $episode > 0) {
                            // Mark the releases video and episode IDs
                            $this->setVideoIdFound($videoId, $row['id'], $episode);
                            if ($this->echooutput) {
                                echo ColorCLI::primary('Found TRAKT Match!');
                            }
                            continue;
                        }
                        //Processing failed, set the episode ID to the next processing group
                        $this->setVideoNotFound(parent::PROCESS_IMDB, $row['id']);
                    } else {
                        //Processing failed, set the episode ID to the next processing group
                        $this->setVideoNotFound(parent::PROCESS_IMDB, $row['id']);
                        $this->titleCache[] = $release['cleanname'];
                    }
                } else {
                    //Processing failed, set the episode ID to the next processing group
                    $this->setVideoNotFound(parent::PROCESS_IMDB, $row['id']);
                    $this->titleCache[] = $release['cleanname'];
                }
            }
        }
    }

    /**
     * Fetch banner from site.
     *
     * @param $videoId
     * @param $siteID
     *
     * @return bool
     */
    public function getBanner($videoId, $siteID): bool
    {
        return false;
    }

    /**
     * Retrieve info of TV episode from site using its API.
     *
     * @param int $siteId
     * @param int $series
     * @param int $episode
     *
     * @return array|bool False on failure, an array of information fields otherwise.
     */
    public function getEpisodeInfo($siteId, $series, $episode)
    {
        $return = false;

        $response = $this->client->episodeSummary($siteId, $series, $episode);

        sleep(1);

        if (is_array($response)) {
            if ($this->checkRequiredAttr($response, 'traktE')) {
                $return = $this->formatEpisodeInfo($response);
            }
        }

        return $return;
    }

    public function getMovieInfo(): void
    {
    }

    /**
     * Retrieve poster image for TV episode from site using its API.
     *
     * @param int $videoId ID from videos table.
     * @param int $siteId  ID that this site uses for the programme.
     *
     * @return int
     */
    public function getPoster($videoId, $siteId): int
    {
        $hascover = 0;
        $ri = new ReleaseImage($this->pdo);

        if ($this->posterUrl !== '') {
            // Try to get the Poster
            $hascover = $ri->saveImage($videoId, $this->posterUrl, $this->imgSavePath, '', '');
        }

        // Couldn't get poster, try fan art instead
        if ($hascover !== 1 && $this->fanartUrl !== '') {
            $hascover = $ri->saveImage($videoId, $this->fanartUrl, $this->imgSavePath, '', '');
        }

        // Mark it retrieved if we saved an image
        if ($hascover === 1) {
            $this->setCoverFound($videoId);
        }

        return $hascover;
    }

    /**
     * Retrieve info of TV programme from site using it's API.
     *
     * @param string $name Title of programme to look up. Usually a cleaned up version from releases table.
     *
     * @return array|false    False on failure, an array of information fields otherwise.
     */
    public function getShowInfo($name)
    {
        $return = $response = false;
        $highestMatch = 0;

        // Trakt does NOT like shows with the year in them even without the parentheses
        // Do this for the API Search only as a local lookup should require it
        $name = preg_replace('# \((19|20)\d{2}\)$#', '', $name);

        $response = (array) $this->client->showSearch($name);

        sleep(1);

        if (is_array($response)) {
            foreach ($response as $show) {

                // Check for exact title match first and then terminate if found
                if ($show['show']['title'] === $name) {
                    $highest = $show;
                    break;
                }

                // Check each show title for similarity and then find the highest similar value
                $matchPercent = $this->checkMatch($show['show']['title'], $name, self::MATCH_PROBABILITY);

                // If new match has a higher percentage, set as new matched title
                if ($matchPercent > $highestMatch) {
                    $highestMatch = $matchPercent;
                    $highest = $show;
                }
            }
            if (isset($highest)) {
                $fullShow = $this->client->showSummary($highest['show']['ids']['trakt'], 'full');
                if ($this->checkRequiredAttr($fullShow, 'traktS')) {
                    $return = $this->formatShowInfo($fullShow);
                }
            }
        }

        return $return;
    }

    /**
     * Assigns API show response values to a formatted array for insertion
     * Returns the formatted array.
     *
     * @param $show
     *
     * @return array
     */
    public function formatShowInfo($show): array
    {
        preg_match('/tt(?P<imdbid>\d{6,7})$/i', $show['ids']['imdb'], $imdb);
        $this->posterUrl = $show['images']['poster']['thumb'] ?? '';
        $this->fanartUrl = $show['images']['fanart']['thumb'] ?? '';
        $this->localizedTZ = $show['airs']['timezone'];

        return [
                'type'      => parent::TYPE_TV,
                'title'     => (string) $show['title'],
                'summary'   => (string) $show['overview'],
                'started'   => Time::localizeAirdate($show['first_aired'], $this->localizedTZ),
                'publisher' => (string) $show['network'],
                'country'   => (string) $show['country'],
                'source'    => parent::SOURCE_TRAKT,
                'imdb'      => (int) ($imdb['imdbid'] ?? 0),
                'tvdb'      => (int) ($show['ids']['tvdb'] ?? 0),
                'trakt'     => (int) $show['ids']['trakt'],
                'tvrage'    => (int) ($show['ids']['tvrage'] ?? 0),
                'tvmaze'    => 0,
                'tmdb'      => (int) ($show['ids']['tmdb'] ?? 0),
                'aliases'   => isset($show['aliases']) && ! empty($show['aliases']) ? (array) $show['aliases'] : '',
                'localzone' => $this->localizedTZ,
        ];
    }

    /**
     * Assigns API episode response values to a formatted array for insertion
     * Returns the formatted array.
     *
     * @param $episode
     *
     * @return array
     */
    public function formatEpisodeInfo($episode): array
    {
        return [
                'title'       => (string) $episode['title'],
                'series'      => (int) $episode['season'],
                'episode'     => (int) $episode['epsiode'],
                'se_complete' => 'S'.sprintf('%02d', $episode['season']).'E'.sprintf('%02d', $episode['episode']),
                'firstaired'  => Time::localizeAirdate($episode['first_aired'], $this->localizedTZ),
                'summary'     => (string) $episode['overview'],
        ];
    }
}