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<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\DB;

class AddViewAnimeIndex extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
	    DB::statement(
		    "CREATE VIEW view_anime_index AS
		    SELECT DISTINCT
			a.mal_id,
			url,
			image_url,
			title_pref as title,
			title_pref,
			anime_type,
			a.created_at,
			a.updated_at,
			episodes,
			is_airing,
			synopsis,
			hashtag,
			(SELECT score FROM stats as b WHERE b.mal_id = a.mal_id ORDER BY created_at  ASC LIMIT 1) as score_begin,
			(SELECT score FROM stats as b WHERE b.mal_id = a.mal_id ORDER BY created_at DESC LIMIT 1) as score_today,
			(SELECT watching FROM stats as b WHERE b.mal_id = a.mal_id ORDER BY created_at DESC LIMIT 1) as watching,
			(SELECT members FROM stats as b WHERE b.mal_id = a.mal_id ORDER BY created_at DESC LIMIT 1) as members
			FROM
				anime as a
			JOIN
				stats as s ON a.mal_id = s.mal_id
			WHERE
				score IS NOT null
			ORDER BY
				abs(score_today-score_begin) DESC,
				is_airing DESC
		    ;"
	    );
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
	DB::statement("DROP VIEW view_anime_index");
    }
}