Migrate spam_db to InnoDB and utf8mb4

database/migrations/2025_01_01_000000_alter_common_spam_db_table.php

@@ -0,0 +1,59 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * The database connection that should be used by the migration.
+     *
+     * @var string
+     */
+    protected $connection = 'common';
+
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        // change word to 191 characters (max length for index on utf8mb4 in MySQL < 5.7)
+        Schema::table('spam_db', function (Blueprint $table) {
+            $table->string('word', 191)->charset('utf8mb4')->collation('utf8mb4_unicode_ci')->change();
+        });
+        // create index on type
+        Schema::table('spam_db', function (Blueprint $table) {
+            $table->index('type');
+        });
+        // update to modern standards (InnoDB & utf8mb4)
+        Schema::table('spam_db', function (Blueprint $table) {
+            DB::statement('ALTER TABLE common.spam_db ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci');
+            DB::statement('ALTER TABLE common.spam_db CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        // revert to old standards (MyISAM & utf8)
+        Schema::table('spam_db', function (Blueprint $table) {
+            DB::statement('ALTER TABLE spam_db ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci');
+            DB::statement('ALTER TABLE spam_db CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci');
+        });
+        // change word back to 256 characters
+        Schema::table('spam_db', function (Blueprint $table) {
+            $table->string('word', 256)->charset('utf8')->collation('utf8_general_ci')->change();
+        });
+        // drop index on type
+        Schema::table('spam_db', function (Blueprint $table) {
+            $table->dropIndex(['type']);
+        });
+    }
+};