Add indexes for system file table

database/migrations/2024_04_18_000025_Db_Update_System_Files_Table_Add_Indexes.php

@@ -0,0 +1,143 @@
+<?php
+
+use October\Rain\Database\Schema\Blueprint;
+use October\Rain\Database\Updates\Migration;
+
+/**
+ * Class DbUpdateSystemFilesTableAddIndexes.
+ */
+class DbUpdateSystemFilesTableAddIndexes extends Migration
+{
+    /**
+     * @var string
+     */
+    const TABLE_NAME = 'system_files';
+
+    /**
+     * @var array
+     */
+    private $tableIndexes = [
+        'field' => 'system_files_field_index',
+        'attachment_id' => 'system_files_attachment_id_index',
+        'attachment_type' => 'system_files_attachment_type_index',
+    ];
+
+    /**
+     * Apply migration.
+     *
+     * return void
+     */
+    public function up(): void
+    {
+        if (!Schema::hasColumns(self::TABLE_NAME, array_keys($this->tableIndexes))) {
+            return;
+        }
+
+        /**
+         * Drop indexes.
+         */
+        Schema::table(self::TABLE_NAME, function(Blueprint $table) {
+            $this->dropIndexes($table);
+        });
+
+        /**
+         * Create indexes.
+         */
+        Schema::table(self::TABLE_NAME, function(Blueprint $table) {
+            $this->createIndexes($table);
+        });
+    }
+
+    /**
+     * Rollback migration.
+     *
+     * @return void
+     */
+    public function down(): void
+    {
+        if (!Schema::hasColumns(self::TABLE_NAME, array_keys($this->tableIndexes))) {
+            return;
+        }
+
+        /**
+         * Drop indexes.
+         */
+        Schema::table(self::TABLE_NAME, function(Blueprint $table) {
+
+            /**
+             * @var array
+             */
+            $listIndexes = $this->getListTableIndexes();
+
+            if (array_key_exists('system_files_attachments_index', $listIndexes)) {
+                $table->dropIndex('system_files_attachments_index');
+            }
+        });
+    }
+
+    /**
+     * Delete list of indexes relative to $tableIndexes variable.
+     *
+     * @param \October\Rain\Database\Schema\Blueprint
+     *
+     * @return void
+     */
+    private function dropIndexes(Blueprint $table): void
+    {
+        /**
+         * @var array
+         */
+        $listIndexes = $this->getListTableIndexes();
+
+        foreach ($this->tableIndexes as $index) {
+            if (array_key_exists($index, $listIndexes)) {
+                $table->dropIndex($index);
+            }
+        }
+    }
+
+    /**
+     * Create list of indexes relative to $tableIndexes variable.
+     *
+     * @param \October\Rain\Database\Schema\Blueprint
+     *
+     * @return void
+     */
+    private function createIndexes(Blueprint $table): void
+    {
+        /**
+         * @var array
+         */
+        $listIndexes = $this->getListTableIndexes();
+
+        if (!array_key_exists('system_files_attachments_index', $listIndexes)) {
+            $table->index([
+                'field',
+                'attachment_id',
+                'attachment_type',
+            ], 'system_files_attachments_index');
+        }
+
+        foreach ($this->tableIndexes as $column => $index) {
+            if (!array_key_exists($index, $listIndexes)) {
+                $table->index($column, $index);
+            }
+        }
+    }
+
+    /**
+     * @return array
+     */
+    private function getListTableIndexes(): array
+    {
+        /**
+         * @var \Doctrine\DBAL\Schema\MySqlSchemaManager
+         */
+        $mysqlManager = \Schema::getConnection()->getDoctrineSchemaManager();
+
+        /**
+         * @var array
+         */
+        return $mysqlManager->listTableIndexes(self::TABLE_NAME);
+    }
+}