<?php
namespace App\Libraries;
use Illuminate\Support\Facades\DB;

use Carbon\Carbon;
use Jikan\MyAnimeList\MalClient;

use App\Libraries\AnimeSchedule;
use App\Libraries\AnimeSeason;
use App\Anime;
use App\AnimeStats;
use App\MALUser;
use App\Calendar;
use App\Airing;

use Eluceo\iCal\Component\Calendar as iCalendar; 
use Eluceo\iCal\Component\Event;

class Background {

	public function saveAiring(Anime $anime) {
		$stats = $anime->getStats()->get()->first();
		if ( is_null($stats->score) ) {
			return;
		}

		$airing = Airing::where('mal_id', $stats->mal_id)->get()->first();
		if ( is_null($airing) ) {
			$airing = new Airing();
		}

		/**
		 * Try to get Data from Anilist.
		 * On error return early.
		 */
		try {
			$airing_data = $anime->getDataFromAnilist();
		} catch( \Exception $e ) {
			echo "Getting Data from Anilist failed for anime: " . $anime->title_pref . " (" . $anime->mal_id . ")\n";
			return;
		}
		if ( "" == $airing_data ) {
			echo "Got empty data from Anilist for anime: " . $anime->title_pref . " (" . $anime->mal_id . ")\n";
			return;
		}

		/**
		 * Check if we need to save the airing data or if we already have it in database.
		 */
		if ( ! is_null( $airing->episode ) ) {
			if ( ! is_null( $airing_data->nextAiringEpisode ) && 
			   ( $airing->episode == $airing_data->nextAiringEpisode->episode) ) {
				if ( $airing->aired_at == $airing_data->nextAiringEpisode->airingAt ) {
					/**
					 * Double entry.
					 */
					return;
				}
				/**
				 * We need to update because the airing data was postponed.
				 */
			}
		} 

		$airing->mal_id = $anime->mal_id;
		if ( ! is_null($airing_data->nextAiringEpisode) ) {
			$airing->episode = $airing_data->nextAiringEpisode->episode;
		}
		if ( ! is_null($airing_data->nextAiringEpisode) ) {
			$airing->aired_at = Carbon::createFromTimestamp($airing_data->nextAiringEpisode->airingAt);
		}
		if ( ! is_null($airing_data) ) {
			$airing->duration = $airing_data->duration;
		}

		if ( is_null($airing_data->duration) ) {
			echo "No duration found for anime: " . $anime->title_pref . " (" . $anime->mal_id . "). (Autoset to 20.)\n";
			$airing->duration = 20;
		}

		if ( is_null($airing->aired_at) ) {
			echo "No airing date found for anime: " . $anime->title_pref . " (" . $anime->mal_id . ")\n";
			return;
		}
		
		$airing->save();
	}

	public function saveAiringForAll() {
		$anime_all = Anime::where('is_airing', true)->get();
		foreach( $anime_all as $anime ) {
			$this->setAiring($anime);
			sleep(1);
		}
	}

	/**
	 * Save entire anime season in database.
	 */
	public function saveSeason() {
		$jikan = new MalClient;

		$season = $jikan->getSeasonal(
		    (new \Jikan\Request\Seasonal\SeasonalRequest(
		        ))
		);

		foreach($season->anime as $entry) {
			/** 
			 * Sleep to avoid 403 by MAL.
			 */
			sleep(10);

			$check = Anime::where('mal_id', $entry->getMalID() )->first()->get();
			if ( ! is_null($check) ) {
				/**
				 * We already have this anime saved.
				 */
				echo "Duplicate entry: (" . $entry->getMalID() . ") Continue\n";
				continue;
			}

			$anime = new Anime();
			$anime->fill( $entry->getMalID(), $is_airing=true );

			if( ! DB::table('anime')->where('mal_id', $entry->getMalID() )->exists() ) {
				$anime->save();
			}
		}
	}

	public function saveAnimeStats(Anime $anime = null) {
		if ( is_null($anime) ) {
			$anime = Anime::get();
		}

		foreach($anime as $entry ) {
			$animeStats = new AnimeStats();
			$animeStats->fill( $entry->getMalID() );

			$animeStats->save();
		}
	}

	public function checkIfIsAiring() {
		$jikan = new Malclient;

		foreach( Anime::where('is_airing', true)->get() as $anime) {
			try {
				$animeInfo = $jikan->getAnime(
					(new \Jikan\Request\Anime\AnimeRequest( $anime->mal_id ))
				);
			} catch (\Exception $e) {
				echo "Problem requesting AnimeInfo for (" . $anime->mal_id . ") continue\n";
				echo $e->getMessage();
				echo "\n\n";
			}
			
			if ( ! $animeInfo->isAiring() ) {
				DB::table('anime')
					->where('mal_id', $anime->mal_id)
					->update(['is_airing' => false]);
			}
		}
	}
}