import pymysql
import os
from dotenv import load_dotenv

load_dotenv()

def show_tables():
    conn = pymysql.connect(
        host=os.getenv('DB_HOST', 'localhost'),
        user=os.getenv('DB_USER', 'root'),
        password=os.getenv('DB_PASSWORD', '45278434'),
        database='PM_proto_test',
        charset='utf8mb4',
        cursorclass=pymysql.cursors.DictCursor
    )
    try:
        with conn.cursor() as cursor:
            cursor.execute("SHOW TABLES")
            tables = cursor.fetchall()
            print("Tables in PM_proto_test:")
            for t in tables:
                print(f" - {list(t.values())[0]}")
    except Exception as e:
        print(f"Error occurred: {e}")
    finally:
        conn.close()

if __name__ == "__main__":
    show_tables()