feat: implement dynamic database management via MySQL driver and API controllers

backend/app/Services/Database/MySqlDriver.php

@@ -114,10 +114,16 @@ class MySqlDriver implements DatabaseDriverInterface, SchemaDiscoveryInterface
         $host = $config['host'] ?? '127.0.0.1';
         $port = $config['port'] ?? '3306';
         $database = $config['database'] ?? '';
+        $table = $config['table'] ?? '';
 
         // Build command with flags for a complete and resilient export
         $passwordPart = !empty($password) ? "-p" . escapeshellarg($password) : "";
-        $dbPart = !empty($database) ? escapeshellarg($database) : "--all-databases";
+        
+        if (!empty($table) && !empty($database)) {
+            $dbPart = escapeshellarg($database) . " " . escapeshellarg($table);
+        } else {
+            $dbPart = !empty($database) ? escapeshellarg($database) : "--all-databases";
+        }
         
         // --single-transaction: for InnoDB tables, ensures consistency without locking
         // --skip-lock-tables: avoids issues with views/definers that might prevent locking
@@ -225,4 +231,35 @@ class MySqlDriver implements DatabaseDriverInterface, SchemaDiscoveryInterface
         $results = $this->query($sql, [$database]);
         return (array) ($results[0] ?? []);
     }
+
+    public function getTableMetadata(string $database, string $table): array
+    {
+        $sql = "
+            SELECT 
+                ENGINE as engine,
+                TABLE_ROWS as rows,
+                DATA_LENGTH as data_length,
+                INDEX_LENGTH as index_length,
+                DATA_FREE as data_free,
+                AUTO_INCREMENT as auto_increment,
+                CREATE_TIME as create_time,
+                UPDATE_TIME as update_time,
+                TABLE_COLLATION as collation,
+                TABLE_COMMENT as comment
+            FROM 
+                information_schema.TABLES 
+            WHERE 
+                TABLE_SCHEMA = ? AND 
+                TABLE_NAME = ?
+        ";
+
+        $results = $this->query($sql, [$database, $table]);
+        return (array) ($results[0] ?? []);
+    }
+
+    public function truncateTable(string $table): bool
+    {
+        DB::connection($this->connectionName)->statement("TRUNCATE TABLE `{$table}`");
+        return true;
+    }
 }

backend/app/Services/DatabaseService.php

@@ -122,4 +122,20 @@ class DatabaseService
     {
         return $this->getDriver()->getDatabaseMetadata($database);
     }
+
+    /**
+     * Get table metadata.
+     */
+    public function getTableMetadata(string $database, string $table): array
+    {
+        return $this->getDriver()->getTableMetadata($database, $table);
+    }
+
+    /**
+     * Truncate a table.
+     */
+    public function truncateTable(string $table): bool
+    {
+        return $this->getDriver()->truncateTable($table);
+    }
 }