<?php

namespace App\Service\MediaProcessing;

use App\Models\Comment;
use App\Models\ExternalId;
use App\Models\Genre;
use App\Models\Image;
use App\Models\ItemToFetchJobs;
use App\Models\Keyword;
use App\Models\Movie;
use App\Models\MovieAlternativeTitle;
use App\Models\MovieCollection;
use App\Models\Person;
use App\Models\ReleaseDate;
use App\Models\Translation;
use App\Service\TMDBApi\MoviesApi;
use App\Service\TMDBApi\PersonApi;
use Illuminate\Support\Str;

class MovieProcessingService implements ProcessingInterface
{
    private MoviesApi $moviesApi;
    private PersonApi $personApi;

    public function __construct(
        MoviesApi $moviesApi,
        PersonApi $personApi
    ) {
        $this->moviesApi = $moviesApi;
        $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)
    {
        $tmdbMovie = $this->moviesApi->getMovie($item->tmdb_id);
        $tmdbMovie['tmdb_id'] = $tmdbMovie['id'];

        $movie = Movie::where('tmdb_id', $tmdbMovie['tmdb_id'])->first();

        if($movie) {
            return;
        }

        $tmdbMovie['slug'] = Str::slug($tmdbMovie['title']);

        $movieId = Movie::create($tmdbMovie);

        if (!empty($tmdbMovie['belongs_to_collection'])) {
            $this->processMovieCollection($movieId->id, $tmdbMovie['belongs_to_collection']);
        }

        if (!empty($tmdbMovie['genres'])) {
            $this->processMovieGenres($movieId->id, $tmdbMovie['genres']);
        }

        $this->removeElementFromRemainingJobs($tmdbMovie['id'], 'Details');
    }

    private function getAlternativeTitles($item)
    {
        $alternativeTitles = $this->moviesApi->getAlternativeTitles($item->tmdb_id);

        if (empty($alternativeTitles) || !isset($alternativeTitles['titles'])) {
            return;
        }

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($alternativeTitles['titles'] as $alternativeTitle) {
            $alternativeTitleExists = MovieAlternativeTitle::where('movie_id', $movie->id)
                ->where('iso', $alternativeTitle['iso_3166_1'])
                ->first();

            if (!$alternativeTitleExists) {
                MovieAlternativeTitle::create([
                    'iso' => $alternativeTitle['iso_3166_1'],
                    'movie_id' => $movie->id,
                    'title' => $alternativeTitle['title'],
                    'type' => $alternativeTitle['type'],
                ]);
            }
        }

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

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

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

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

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

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

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

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

        $movie = Movie::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 ($movie->whereHas('images', function ($query) use ($imageExists) {
                    $query->where('type', $imageExists->type)
                        ->where('file_path', $imageExists->file_path);
                })->exists()) {
                    echo "Movie has image | ";
                    return;
                } else {
                    echo "Movie does not have image | ";
                    $movie->images()->attach($imageExists);
                }
            }
        }

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

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

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

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

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

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

            if ($movie->whereHas('keywords', function ($query) use ($existingKeyword) {
                $query->where('tmdb_id', $existingKeyword->tmdb_id);
            })->exists()) {
                echo "Movie has keyword | ";
                return;
            } else {
                echo "Movie does not have keyword | ";
                $movie->keywords()->attach($existingKeyword);
            }
        }

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

    private function getReleases($item)
    {
        $tmdbReleases = $this->moviesApi->getReleases($item->tmdb_id);

        if (empty($tmdbReleases) || !isset($tmdbReleases['countries'])) {
            echo "[E] Movie ".$item->tmdb_id ." Releases ".json_encode($tmdbReleases)."\n\n";
            return;
        }

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

        echo "Movie ".$movie->id ." Releases ".json_encode($tmdbReleases)."\n\n";

        foreach ($tmdbReleases['countries'] as $tmdbRelease) {
            $existingReleaseDate = ReleaseDate::where('iso_3166', $tmdbRelease['iso_3166_1'])
                ->where('release_date', $tmdbRelease['release_date'])
                ->where('certification', $tmdbRelease['certification'])
                ->first();


            if (!$existingReleaseDate) {
                $existingReleaseDate = ReleaseDate::create([
                    'iso_3166' => $tmdbRelease['iso_3166_1'],
                    'certification' => $tmdbRelease['certification'],
                    'descriptors' => $tmdbRelease['descriptors'] ? json_encode($tmdbRelease['descriptors']) : null,
                    'release_date' => $tmdbRelease['release_date'],
                ]);
            }

            if ($movie->whereHas('releaseDates', function ($query) use ($movie) {
                $query->where('movie_id', $movie->id);
            })->exists()) {
                echo "Movie has release date | ";
                return;
            } else {
                echo "Movie does not have release date | ";
                $movie->releaseDates()->attach($existingReleaseDate);
            }
        }

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

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

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

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbMovieTranslations['translations'] as $tmdbTranslation) {
            $existingTranslation = Translation::where('movie_id', $movie->id)
                ->where('name', $tmdbTranslation['name'])
                ->first();

            if (!$existingTranslation) {
                Translation::create([
                    'movie_id' => $movie->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'],
                    'tagline' => $tmdbTranslation['data']['tagline'],
                    'title' => $tmdbTranslation['data']['title'],
                ]);
            }
        }

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

    private function getReviews($item)
    {
        $tmdbMovieReviews = $this->moviesApi->getReviews($item->tmdb_id);

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

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

        foreach ($tmdbMovieReviews['results'] as $tmdbReview) {
            $existingReview = Comment::where('entity_id', $movie->id)
                ->where('entity_type', Comment::TYPE_MOVIE)
                ->where('tmdb_id', $tmdbReview['id'])
                ->first();

            if (!$existingReview) {
                Comment::create([
                    'entity_id' => $movie->id,
                    'entity_type' => Comment::TYPE_MOVIE,
                    'author_name' => $tmdbReview['author'],
                    'author_avatar' => $tmdbReview['author_details']['avatar_path'],
                    'author_rating' => $tmdbReview['author_details']['rating'],
                    'content' => $tmdbReview['content'],
                    'published_at' => $tmdbReview['created_at'],
                    'tmdb_id' => $tmdbReview['id'],
                    'tmdb_url' => $tmdbReview['url'],
                ]);
            }
        }

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

    private function getExternalIds($item)
    {
        $externalIds = $this->moviesApi->getExternalIds($item->tmdb_id);

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

        $movie = Movie::where('tmdb_id', $item->tmdb_id)->first();

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

        if (!$externalId) {
            $externalIds['tmdb_id'] = $externalIds['id'];
            $externalIds['movie_id'] = $movie->id;
            unset($externalIds['id']);

            ExternalId::create($externalIds);
        }

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

    private function processMovieCollection(int $movieId, $belongsToCollection)
    {
        $movieCollection = MovieCollection::where('tmdb_id', $belongsToCollection['id'])->first();

        if (!$movieCollection) {
            $movieCollection = MovieCollection::create([
                'name' => $belongsToCollection['name'],
                'slug' => Str::slug($belongsToCollection['name']),
                'poster_path' => $belongsToCollection['poster_path'],
                'backdrop_path' => $belongsToCollection['backdrop_path'],
                'tmdb_id' => $belongsToCollection['id'],
            ]);
        }

        $movie = Movie::find($movieId);

        if ($movie->whereHas('collections', function ($query) use ($movieCollection) {
            $query->where('tmdb_id', '=', $movieCollection->tmdb_id);
        })->exists()) {
            echo "Movie is in the collection";
            return;
        } else {
            echo "Movie is not in the collection";
            $movie->collections()->attach($movieCollection);
        }

    }

    private function processMovieGenres(int $movieId, array $tmdbGenres)
    {
        foreach ($tmdbGenres as $tmdbGenre) {
            $genre = Genre::where('name', $tmdbGenre['name'])
                ->where('tmdb_id', $tmdbGenre['id'])
                ->first();

            if (!$genre) {
                $genre = Genre::create([
                    'name' => $tmdbGenre['name'],
                    'slug' => Str::slug($tmdbGenre['name']),
                    'tmdb_id' => $tmdbGenre['id'],
                    'type' => Genre::TYPE_MOVIE,
                ]);
            }

            $movie = Movie::find($movieId);

            if ($movie->whereHas('genres', function ($query) use ($genre) {
                $query->where('tmdb_id', '=', $genre->tmdb_id);
            })->exists()) {
                echo "Movie is in the genre";
                return;
            } else {
                echo "Movie is not in the genre";
                $movie->genres()->attach($genre);
            }
        }
    }

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

        $remainingJobs = $itemToFetchJobs->remaining_jobs;
        $remainingJobKey = array_search($job, $remainingJobs);

        unset($remainingJobs[$remainingJobKey]);

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

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

    private function processCast($movie, array $castList)
    {
        if (empty($castList)) {
            return;
        }

        foreach ($castList 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 ($movie->whereHas('castList', function ($query) use ($person) {
                $query->where('tmdb_id', '=', $person->tmdb_id);
            })->exists()) {
                echo "Person is in cast | ";
                return;
            } else {
                echo "Person is not in cast |";
                $movie->castList()->attach($person, [
                    'known_for_department' => $castPerson['known_for_department'],
                    'character' => $castPerson['character'],
                    'tmdb_cast_id' => $castPerson['cast_id'],
                    'order' => $castPerson['order'],
                ]);
            }
        }
    }

    private function processCrew($movie, array $crewList)
    {
        if (empty($crewList)) {
            return;
        }

        foreach ($crewList 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 ($movie->whereHas('crewList', function ($query) use ($person) {
                $query->where('tmdb_id', '=', $person->tmdb_id);
            })->exists()) {
                echo "Person is in crew | ";
                return;
            } else {
                echo "Person is not in crew |";
                $movie->castList()->attach($person, [
                    'known_for_department' => json_encode($crewPerson['known_for_department']),
                    'job' => $crewPerson['job'],
                    'department' => $crewPerson['department'],
                    'tmdb_cast_id' => $crewPerson['credit_id'],
                ]);
            }
        }
    }
}