From 19aaa2aa59ce08a340c8f2c8ee2614e9ddcb1b2c Mon Sep 17 00:00:00 2001
From: horus
Date: Sat, 12 Nov 2022 13:16:31 +0100
Subject: performance fix

---
 ..._12_130638_fix_performance_view_anime_index.php | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 database/migrations/2022_11_12_130638_fix_performance_view_anime_index.php

diff --git a/database/migrations/2022_11_12_130638_fix_performance_view_anime_index.php b/database/migrations/2022_11_12_130638_fix_performance_view_anime_index.php
new file mode 100644
index 0000000..ed064ee
--- /dev/null
+++ b/database/migrations/2022_11_12_130638_fix_performance_view_anime_index.php
@@ -0,0 +1,97 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class FixPerformanceViewAnimeIndex extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+	Schema::table('view_anime_index', function (Blueprint $table) {
+	    DB::statement(
+		    "CREATE OR REPLACE VIEW view_anime_index AS
+		    SELECT DISTINCT
+			a.mal_id,
+			url,
+			image_url,
+			(CASE WHEN title_eng IS NOT NULL THEN title_eng
+			ELSE title_pref END) as title,
+			title_pref,
+			title_eng,
+			anime_type,
+			a.created_at,
+			a.updated_at,
+			episodes,
+			synopsis,
+			hashtag,
+			airing_status,
+			a.season_name,
+			a.season_year,
+			score_begin,
+			score_today,
+			anime_details.watching as watching,
+			anime_details.members as members
+			FROM
+				anime as a
+			JOIN
+				stats as s ON a.mal_id = s.mal_id
+			JOIN
+				anime_details on anime_details.mal_id = a.mal_id
+			ORDER BY
+				abs(score_today-score_begin) DESC,
+				airing_status ASC
+		    ;"
+	    );
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+	Schema::table('view_anime_index', function (Blueprint $table) {
+	    DB::statement(
+		    "CREATE OR REPLACE VIEW view_anime_index AS
+		    SELECT DISTINCT
+			a.mal_id,
+			url,
+			image_url,
+			(CASE WHEN title_eng IS NOT NULL THEN title_eng
+			ELSE title_pref END) as title,
+			title_pref,
+			title_eng,
+			anime_type,
+			a.created_at,
+			a.updated_at,
+			episodes,
+			synopsis,
+			hashtag,
+			airing_status,
+			a.season_name,
+			a.season_year,
+			(SELECT score FROM stats as b WHERE b.mal_id = a.mal_id AND score IS NOT NULL 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
+			ORDER BY
+				abs(score_today-score_begin) DESC,
+				airing_status ASC
+		    ;"
+	    );
+        });
+    }
+    
+}
-- 
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