<?php

namespace App\Service\MediaProcessing;

use App\Models\Comment;
use App\Models\Episode;
use App\Models\ExternalId;
use App\Models\Image;
use App\Models\ItemToFetch;
use App\Models\ItemToFetchJobs;
use App\Models\Keyword;
use App\Models\Person;
use App\Models\Season;
use App\Models\Show;
use App\Models\ShowAlternativeTitle;
use App\Models\ShowRecommendation;
use App\Models\ShowSimilar;
use App\Models\ShowTranslation;
use App\Models\Translation;
use App\Models\Video;
use App\Models\WatchProvider;
use App\Service\TMDBApi\PersonApi;
use App\Service\TMDBApi\ShowsApi;
use Illuminate\Support\Str;
use function PHPUnit\Framework\containsIdentical;

class ShowProcessingService implements ProcessingInterface
{
    private ShowsApi $showsApi;
    private PersonApi $personApi;

    public function __construct(
        ShowsApi $showsApi,
        PersonApi $personApi
    ) {
        $this->showsApi = $showsApi;
        $this->personApi = $personApi;
    }

    public function process($item, $job)
    {
        $methodName = "get".ucfirst($job);

        if (!method_exists($this, $methodName)) {
            // @todo maybe raise an exception here
            return;
        }

        $this->$methodName($item);
    }

    private function getDetails($item)
    {
        $tmdbShow = $this->showsApi->getTvshow($item->tmdb_id);
        $tmdbShow['tmdb_id'] = $tmdbShow['id'];

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        if ($show) {
            return;
        }

        $tmdbShow['slug'] = Str::slug($tmdbShow['name'].'-'.$tmdbShow['tmdb_id']);
        $tmdbShow['first_air_date'] = $tmdbShow['first_air_date'] ? new \DateTime($tmdbShow['first_air_date']) : null;
        $tmdbShow['last_air_date'] = $tmdbShow['last_air_date'] ? new \DateTime($tmdbShow['last_air_date']) : null;
        $tmdbShow['episode_run_time'] = reset($tmdbShow['episode_run_time']);
        $tmdbShow['episode_run_time'] = reset($tmdbShow['episode_run_time']);
        $tmdbShow['languages'] = json_encode($tmdbShow['languages']);
        $tmdbShow['number_of_episodes'] = $tmdbShow['number_of_episodes'] ?? 0;

        $show = Show::create($tmdbShow);

        if (!empty($tmdbShow['seasons'])) {
            $this->processSeasons($show, $tmdbShow['seasons']);
        }

        // @todo process genres
        // @todo process networks
        // @todo process production countries
        // @todo process production companies

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_DETAILS);
    }

    private function getAlternativeTitles($item)
    {
        $tmdbAlternativeTitles = $this->showsApi->getAlternativeTitles($item->tmdb_id);

        if (empty($tmdbAlternativeTitles) ||empty($tmdbAlternativeTitles['results'])) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbAlternativeTitles['results'] as $tmdbAlternativeTitle) {
            $alternativeTitle = ShowAlternativeTitle::where('show_id', $show->id)
                ->where('iso', $tmdbAlternativeTitle['iso_3166_1'])
                ->first();

            if (!$alternativeTitle) {
                ShowAlternativeTitle::create([
                    'iso' => $tmdbAlternativeTitle['iso_3166_1'],
                    'title' => $tmdbAlternativeTitle['title'],
                    'show_id' => $show->id,
                    'type' => $tmdbAlternativeTitle['type'],
                ]);
            }
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_ALTERNVATIVE_TITLES);
    }

    private function getCredits($item)
    {
        $tmdbCredits = $this->showsApi->getCredits($item->tmdb_id);

        if (empty($tmdbCredits)) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        $this->processCast($show, $tmdbCredits['cast'] ?? []);
        $this->processCrew($show, $tmdbCredits['crew'] ?? []);

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_CREDITS);
    }

    private function getExternalIds($item)
    {
        $tmdbExternalIds = $this->showsApi->getExternalIds($item->tmdb_id);

        if (empty($tmdbExternalIds)) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        if (!$show) {
            return;
        }

        $externalId = ExternalId::where('entity_id', $show->id)
            ->where('entity_type', ExternalId::TYPE_SHOW)
            ->first();

        if (!$externalId) {
            $externalIds['tmdb_id'] = $tmdbExternalIds['id'];
            //$externalIds['show_id'] = $show->id;
            unset($externalIds['id']);

            $externalIds['entity_id'] = $show->id;
            $externalIds['entity_type'] = ExternalId::TYPE_SHOW;

            ExternalId::create($externalIds);
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_EXTERNAL_IDS);
    }

    private function getImages($item)
    {
        $tmdbImages = $this->showsApi->getImages($item->tmdb_id);

        if (empty($tmdbImages)) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbImages as $type => $images) {
            if (!is_array($images)) {
                continue;
            }
            foreach ($images as $image) {
                $imageExists = Image::where('type', $type)
                    ->where('file_path', $image['file_path'])
                    ->first();

                if (!$imageExists) {
                    $image['iso'] = $image['iso_639_1'];
                    $image['type'] = $type;
                    $imageExists = Image::create($image);
                }

                if ($show->whereHas('images', function ($query) use ($imageExists) {
                    $query->where('type', $imageExists->type)
                        ->where('file_path', $imageExists->file_path);
                })->exists()) {
                    return;
                } else {
                    $show->images()->attach($imageExists);
                }
            }
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_IMAGES);
    }

    private function getVideos($item)
    {
        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        $tmdbVideos = $this->showsApi->getVideos($item->tmdb_id);

        if (empty($tmdbVideos) || empty($tmdbVideos['results'])) {
            return;
        }

        foreach ($tmdbVideos['results'] as $tmdbVideo) {
            $videoExists = Video::where('tmdb_id', $tmdbVideo['id'])->first();

            if (!$videoExists) {
                $videoExists = Video::create([
                    'iso_639' => $tmdbVideo['iso_639_1'],
                    'iso_3166' => $tmdbVideo['iso_3166_1'],
                    'name' => $tmdbVideo['name'],
                    'key' => $tmdbVideo['key'],
                    'site' => $tmdbVideo['site'],
                    'size' => $tmdbVideo['size'],
                    'type' => $tmdbVideo['type'],
                    'official' => $tmdbVideo['official'],
                    'published_at' => $tmdbVideo['published_at'] ? new \DateTime($tmdbVideo['published_at']) : null,
                    'tmdb_id' => $tmdbVideo['id'],
                ]);
            }

            if ($show->whereHas('videos', function ($query) use ($show) {
                $query->where('show_id', $show->id);
            })->exists()) {
                return;
            } else {
                $show->videos()->attach($videoExists);
            }
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_VIDEOS);
    }

    private function getKeywords($item)
    {
        $tmdbKeywords = $this->showsApi->getKeywords($item->tmdb_id);

        if (empty($tmdbKeywords) || !isset($tmdbKeywords['results'])) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbKeywords['results'] as $tmdbKeyword) {
            $existingKeyword = Keyword::where('tmdb_id', $tmdbKeyword['id'])->first();

            if (!$existingKeyword) {
                $existingKeyword = Keyword::create([
                    'name' => $tmdbKeyword['name'],
                    'tmdb_id' => $tmdbKeyword['id'],
                ]);
            }

            if ($show->whereHas('keywords', function ($query) use ($existingKeyword) {
                $query->where('tmdb_id', $existingKeyword->tmdb_id);
            })->exists()) {
                return;
            } else {
                $show->keywords()->attach($existingKeyword);
            }
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_KEYWORDS);
    }

    private function getTranslations($item)
    {
        $tmdbMovieTranslations = $this->showsApi->getTranslations($item->tmdb_id);

        if (!$tmdbMovieTranslations || !isset($tmdbMovieTranslations['translations'])) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbMovieTranslations['translations'] as $tmdbTranslation) {
            $existingTranslation = ShowTranslation::where('show_id', $show->id)
                ->where('name', $tmdbTranslation['name'])
                ->first();

            if (!$existingTranslation) {
                ShowTranslation::create([
                    'show_id' => $show->id,
                    'iso_3166' => $tmdbTranslation['iso_3166_1'],
                    'iso_639' => $tmdbTranslation['iso_639_1'],
                    'name' => $tmdbTranslation['name'],
                    'english_name' => $tmdbTranslation['english_name'],
                    'homepage' => $tmdbTranslation['data']['homepage'],
                    'overview' => $tmdbTranslation['data']['overview'],
                    'runtime' => $tmdbTranslation['data']['runtime'] ?? 0,
                    'tagline' => $tmdbTranslation['data']['tagline'],
                    'title' => $tmdbTranslation['data']['title'] ?? '',
                ]);
            }
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_TRANSLATIONS);
    }

    private function getWatchProviders($item)
    {
        $tmdbWatchProviders = $this->showsApi->getWatchProviders($item->tmdb_id);

        if (empty($tmdbWatchProviders) || empty($tmdbWatchProviders['results'])) {
            return;
        }

        $show = Show::where('tmdb_id', $item->tmdb_id)->first();

        if (!$show) {
            $itemToFetch = $this->createJob($item->tmdb_id);
            $this->getDetails($itemToFetch);
            return;
        }

        $types = [
            'flatrate',
            'rent',
            'buy',
        ];

        foreach ($tmdbWatchProviders['results'] as $locale => $tmdbWatchProvider) {
            foreach ($types as $type) {
                if (!isset($tmdbWatchProvider[$type])) {
                    continue;
                }
                $providerInfo = $tmdbWatchProvider[$type];
                $providerInfo = reset($providerInfo);

                if (!isset($providerInfo['provider_id'])) {
                    continue;
                }

                $existingWatchProvider = WatchProvider::where('tmdb_provider_id', $providerInfo['provider_id'])->first();

                if(!$existingWatchProvider) {
                    $existingWatchProvider = WatchProvider::create([
                        'type' => $type,
                        'logo_path' => $providerInfo['logo_path'],
                        'tmdb_provider_id' => $providerInfo['provider_id'],
                        'provider_name' => $providerInfo['provider_name'],
                        'display_priority' => $providerInfo['display_priority'],
                    ]);
                }

                if (!$show->whereHas('watchProviders', function ($query) use ($show) {
                    $query->where('show_id', $show->id);
                })->exists()) {
                    $show->watchProviders()->attach($existingWatchProvider, [
                        'locale' => $locale,
                        'tmdb_url' => $tmdbWatchProvider['link'],
                    ]);
                }
            }
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_WATCH_PROVIDERS);
    }

    private function getRecommendations($item)
    {
        $tmdbRecommendations = $this->showsApi->getRecommendations($item->tmdb_id);

        if (empty($tmdbRecommendations) || empty($tmdbRecommendations['results'])) {
            return;
        }

        $initialShow = Show::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbRecommendations['results'] as $tmdbRecommendation) {
            $itemToFetch = ItemToFetch::where('tmdb_id', $tmdbRecommendation['id'])->where('type', ItemToFetch::TYPE_TV_SERIES)->first();

            if ($itemToFetch) {
                $this->getDetails($itemToFetch);
                continue;
            }

            $show = Show::where('tmdb_id', $tmdbRecommendation['id'])->first();

            if ($show) {
                $recommendationLink = ShowRecommendation::where('show_id', $initialShow->id)
                    ->where('recommended_show_id', $show->id)
                    ->first();

                if (!$recommendationLink) {
                    ShowRecommendation::create([
                        'show_id' => $initialShow->id,
                        'recommended_show_id' => $show->id,
                    ]);
                }

                continue;
            } else {
                $itemToFetch = ItemToFetch::create([
                    'tmdb_id' => $tmdbRecommendation['id'],
                    'type' => ItemToFetch::TYPE_TV_SERIES,
                ]);

                $jobs = ItemToFetchJobs::JOBS;
                $jobs[] = "Details";

                ItemToFetchJobs::create([
                    'tmdb_id' => $tmdbRecommendation['id'],
                    'type' => ItemToFetch::TYPE_TV_SERIES,
                    'remaining_jobs' => json_encode($jobs),
                ]);

                $this->getDetails($itemToFetch);
            }

            $recommendedShow = Show::where('tmdb_id', $tmdbRecommendation['id'])->first();

            ShowRecommendation::create([
                'show_id' => $initialShow->id,
                'recommended_show_id' => $recommendedShow->id,
            ]);
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_RECOMMNDATION);
    }

    private function getSimilar($item)
    {
        $tmdbSimilarMovies = $this->showsApi->getSimilar($item->tmdb_id);

        if (empty($tmdbSimilarMovies) || empty($tmdbSimilarMovies['results'])) {
            return;
        }

        $initialShow = Show::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbSimilarMovies['results'] as $tmdbSimilarMovie) {
            $itemToFetch = ItemToFetch::where('tmdb_id', $tmdbSimilarMovie['id'])->where('type', ItemToFetch::TYPE_TV_SERIES)->first();

            if ($itemToFetch) {
                $this->getDetails($itemToFetch);
                continue;
            }

            $similarShow = Show::where('tmdb_id', $tmdbSimilarMovie['id'])->first();

            if ($similarShow) {
                $similarLink = ShowSimilar::where('show_id', $initialShow->id)
                    ->where('similar_show_id', $similarShow->id)
                    ->first();

                if (!$similarLink) {
                    ShowSimilar::create([
                        'show_id' => $initialShow->id,
                        'similar_show_id' => $similarShow->id,
                    ]);
                }

                continue;
            }


            $itemToFetch = ItemToFetch::create([
                'tmdb_id' => $tmdbSimilarMovie['id'],
                'type' => ItemToFetch::TYPE_TV_SERIES,
            ]);

            $jobs = ItemToFetchJobs::JOBS;
            $jobs[] = "Details";

            ItemToFetchJobs::create([
                'tmdb_id' => $tmdbSimilarMovie['id'],
                'type' => ItemToFetch::TYPE_TV_SERIES,
                'remaining_jobs' => json_encode($jobs),
            ]);

            $this->getDetails($itemToFetch);

            $show = Show::where('tmdb_id', $item->tmdb_id)->first();
            $similarShow = Show::where('tmdb_id', $tmdbSimilarMovie['id'])->first();

            ShowSimilar::create([
                'show_id' => $show->id,
                'similar_show_id' => $similarShow->id,
            ]);
        }

        $this->removeElementFromRemainingJobs($item->tmdb_id, ItemToFetchJobs::JOB_SIMILAR);
    }

    private function getContentRatings($item)
    {

    }

    private function processSeasons(Show $show, array $seasons)
    {
        foreach ($seasons as $season) {
            $showSeason = Season::where('tmdb_id', $season['id'])
                ->where('show_id', $show->id)
                ->first();

            if (!$showSeason) {
                $season['show_id'] = $show->id;
                $showSeason =  Season::create($season);

                $tmdbSeasonDetails = $this->showsApi->getSeasonDetails($show->tmdb_id, $season['season_number']);

                $this->processEpisodes($show, $showSeason, $tmdbSeasonDetails['episodes'] ?? []);
            }
        }
    }

    private function processEpisodes($show, $season, array $tmdbEpisodes)
    {
        if (empty($tmdbEpisodes)) {
            return;
        }

        foreach ($tmdbEpisodes as $tmdbEpisode) {
            $episode = Episode::where('show_id', $show->id)
                ->where('season_id', $season->id)
                ->where('tmdb_id', $tmdbEpisode['id'])
                ->first();

            if (!$episode) {
                $tmdbEpisode['tmdb_id'] = $tmdbEpisode['id'];
                $tmdbEpisode['slug'] = Str::slug($tmdbEpisode['name']);
                $tmdbEpisode['tmdb_show_id'] = $tmdbEpisode['show_id'];
                $tmdbEpisode['season_id'] = $season->id;
//                $tmdbEpisode['crew'] = $tmdbEpisode['crew'];
//                $tmdbEpisode['guest_stars'] = $tmdbEpisode['guest_stars'];


                $tmdbEpisode['show_id'] = $show->id;
                $tmdbEpisode['tmdb_id'] = $season->id;

                Episode::create($tmdbEpisode);
            }
        }
    }

    private function removeElementFromRemainingJobs(int $tmdbId, string $job)
    {
        $itemToFetchJobs = ItemToFetchJobs::where('tmdb_id', $tmdbId)->first();

        $remainingJobs = $itemToFetchJobs->remaining_jobs;

        if (is_string($remainingJobs)) {
            $remainingJobs = json_decode($remainingJobs, true);
        }

        $remainingJobKey = array_search($job, $remainingJobs);

        unset($remainingJobs[$remainingJobKey]);

        if (empty($remainingJobs)) {
            $itemToFetchJobs->delete();
        }

        $itemToFetchJobs->remaining_jobs = $remainingJobs;
        $itemToFetchJobs->save();
    }

    private function processCast($show, array $credits)
    {
        if (empty($credits)) {
            return;
        }

        foreach ($credits as $castPerson) {
            $person = Person::where('tmdb_id', $castPerson['id'])->first();

            if (!$person) {
                $personData = [
                    'adult' => $castPerson['adult'],
                    'tmdb_id' => $castPerson['id'],
                    'gender' => $castPerson['gender'],
                    'name' => $castPerson['name'],
                    'slug' => Str::slug($castPerson['name']),
                    'popularity' => $castPerson['popularity'],
                    'profile_path' => $castPerson['profile_path'],
                ];

                $tmdbPerson = $this->personApi->getPerson($castPerson['id']);

                if (!empty($tmdbPerson)) {
                    $personData = array_merge($personData, [
                        'biography' => $tmdbPerson['biography'],
                        'birtday' => $tmdbPerson['birthday'],
                        'deathday' => $tmdbPerson['deathday'],
                        'homepage' => $tmdbPerson['homepage'],
                        'imdb_id' => $tmdbPerson['imdb_id'],
                        'known_for_department' => $tmdbPerson['known_for_department'] ? json_encode($tmdbPerson['known_for_department']) : null,
                        'also_known_as' => $tmdbPerson['also_known_as'] ? json_encode($tmdbPerson['also_known_as']) : null,
                        'place_of_birth' => $tmdbPerson['place_of_birth'],
                    ]);
                }

                $person = Person::create($personData);
            }

            if ($show->whereHas('castList', function ($query) use ($person) {
                $query->where('tmdb_id', '=', $person->tmdb_id);
            })->exists()) {
                return;
            } else {
                $show->castList()->attach($person, [
                    'known_for_department' => $castPerson['known_for_department'],
                    'character' => $castPerson['character'],
                    'tmdb_cast_id' => $castPerson['cast_id'],
                    'order' => $castPerson['order'],
                ]);
            }
        }
    }

    private function processCrew($show, array $credits)
    {
        if (empty($credits)) {
            return;
        }

        foreach ($credits as $crewPerson) {
            $person = Person::where('tmdb_id', $crewPerson['id'])->first();

            if (!$person) {
                $personData = [
                    'adult' => $crewPerson['adult'],
                    'tmdb_id' => $crewPerson['id'],
                    'gender' => $crewPerson['gender'],
                    'name' => $crewPerson['name'],
                    'slug' => Str::slug($crewPerson['name']),
                    'popularity' => $crewPerson['popularity'],
                    'profile_path' => $crewPerson['profile_path'],
                ];

                $tmdbPerson = $this->personApi->getPerson($crewPerson['id']);

                if (!empty($tmdbPerson)) {
                    $personData = array_merge($personData, [
                        'biography' => $tmdbPerson['biography'],
                        'birtday' => $tmdbPerson['birthday'],
                        'deathday' => $tmdbPerson['deathday'],
                        'homepage' => $tmdbPerson['homepage'],
                        'imdb_id' => $tmdbPerson['imdb_id'],
                        'known_for_department' => $tmdbPerson['known_for_department'] ? json_encode($tmdbPerson['known_for_department']) : null,
                        'also_known_as' => $tmdbPerson['also_known_as'] ? json_encode($tmdbPerson['also_known_as']) : null,
                        'place_of_birth' => $tmdbPerson['place_of_birth'],
                    ]);
                }

                $person = Person::create($personData);
            }

            if ($show->whereHas('crewList', function ($query) use ($person) {
                $query->where('tmdb_id', '=', $person->tmdb_id);
            })->exists()) {
                return;
            } else {
                $show->crewList()->attach($person, [
                    'known_for_department' => json_encode($crewPerson['known_for_department']),
                    'job' => $crewPerson['job'],
                    'department' => $crewPerson['department'],
                    'tmdb_cast_id' => $crewPerson['credit_id'],
                ]);
            }
        }
    }

    private function createJob($tmdbId)
    {
        $itemToFetch = ItemToFetch::where('tmdb_id', $tmdbId)->where('type', ItemToFetch::TYPE_TV_SERIES)->first();

        if ($itemToFetch) {
            return $itemToFetch;
        }

        $show = Show::where('tmdb_id', $tmdbId)->first();
        if ($show) {
            return;
        }

        $itemToFetch = ItemToFetch::create([
            'tmdb_id' => $tmdbId,
            'type' => ItemToFetch::TYPE_TV_SERIES,
        ]);

        $jobs = ItemToFetchJobs::JOBS;
        $jobs[] = "Details";

        ItemToFetchJobs::create([
            'tmdb_id' => $tmdbId,
            'type' => ItemToFetch::TYPE_TV_SERIES,
            'remaining_jobs' => json_encode($jobs),
        ]);

        return $itemToFetch;
    }
}