feat: implement database management API with MySQL driver and schema operations

backend/app/Contracts/DatabaseDriverInterface.php

@@ -83,4 +83,14 @@ interface DatabaseDriverInterface
      * Create a new database.
      */
     public function createDatabase(string $name, string $charset = 'utf8mb4', string $collation = 'utf8mb4_unicode_ci'): bool;
+
+    /**
+     * Drop a database.
+     */
+    public function dropDatabase(string $name): bool;
+
+    /**
+     * Rename a database.
+     */
+    public function renameDatabase(string $oldName, string $newName): bool;
 }

backend/app/Http/Controllers/Api/SchemaController.php

@@ -287,4 +287,31 @@ class SchemaController extends Controller
             return Response::json(['error' => $e->getMessage()], 400);
         }
     }
+
+    public function dropDatabase(Request $request, $database)
+    {
+        try {
+            $this->initializeDriver($request);
+            $this->databaseService->dropDatabase($database);
+            return Response::json(['message' => "Database '{$database}' dropped successfully"]);
+        } catch (\Exception $e) {
+            return Response::json(['error' => $e->getMessage()], 400);
+        }
+    }
+
+    public function renameDatabase(Request $request, $database)
+    {
+        $request->validate([
+            'newName' => 'required|string|max:64',
+        ]);
+
+        try {
+            $this->initializeDriver($request);
+            $newName = $request->get('newName');
+            $this->databaseService->renameDatabase($database, $newName);
+            return Response::json(['message' => "Database '{$database}' renamed to '{$newName}' successfully"]);
+        } catch (\Exception $e) {
+            return Response::json(['error' => $e->getMessage()], 400);
+        }
+    }
 }

backend/app/Services/Database/MySqlDriver.php

@@ -454,4 +454,39 @@ class MySqlDriver implements DatabaseDriverInterface, SchemaDiscoveryInterface
         DB::connection($this->connectionName)->statement("CREATE DATABASE `{$name}` CHARACTER SET {$charset} COLLATE {$collation}");
         return true;
     }
+
+    public function dropDatabase(string $name): bool
+    {
+        DB::connection($this->connectionName)->statement("DROP DATABASE `{$name}`");
+        return true;
+    }
+
+    public function renameDatabase(string $oldName, string $newName): bool
+    {
+        // 1. Create new database
+        $this->createDatabase($newName);
+
+        // 2. Get tables from old database
+        $tables = $this->query("SHOW TABLES FROM `{$oldName}`");
+        $key = "Tables_in_{$oldName}";
+
+        if (!empty($tables)) {
+            $renameQueries = [];
+            foreach ($tables as $table) {
+                $tableName = $table->$key;
+                $renameQueries[] = "`{$oldName}`.`{$tableName}` TO `{$newName}`.`{$tableName}`";
+            }
+            
+            // 3. Rename all tables
+            if (!empty($renameQueries)) {
+                $sql = "RENAME TABLE " . implode(', ', $renameQueries);
+                DB::connection($this->connectionName)->statement($sql);
+            }
+        }
+
+        // 4. Drop old database
+        $this->dropDatabase($oldName);
+
+        return true;
+    }
 }

backend/app/Services/DatabaseService.php

@@ -172,4 +172,20 @@ class DatabaseService
     {
         return $this->getDriver()->createDatabase($name, $charset, $collation);
     }
+
+    /**
+     * Drop a database.
+     */
+    public function dropDatabase(string $name): bool
+    {
+        return $this->getDriver()->dropDatabase($name);
+    }
+
+    /**
+     * Rename a database.
+     */
+    public function renameDatabase(string $oldName, string $newName): bool
+    {
+        return $this->getDriver()->renameDatabase($oldName, $newName);
+    }
 }