import os
import sys

# 添加项目根目录到Python路径
sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

# 在导入应用之前加载环境变量
try:
    from dotenv import load_dotenv
    if load_dotenv():
        print("成功加载.env文件")
    else:
        print("未找到或无法加载.env文件")
except ImportError:
    print("python-dotenv未安装，跳过.env文件加载")

print("Environment variables:")
print(f"DATABASE_URL: {os.environ.get('DATABASE_URL', 'Not set')}")

from app import create_app, db

# 创建应用实例
app = create_app()

print("\nApp config:")
print(f"SQLALCHEMY_DATABASE_URI: {app.config.get('SQLALCHEMY_DATABASE_URI')}")

with app.app_context():
    print("\nDatabase engine info:")
    print(f"Engine URL: {db.engine.url}")
    
    try:
        # 测试数据库连接
        connection = db.engine.connect()
        print("✓ Database connection successful")
        connection.close()
        
        # 检查表结构
        from sqlalchemy import inspect
        inspector = inspect(db.engine)
        tables = inspector.get_table_names()
        print(f"Database tables: {tables}")
        
    except Exception as e:
        print(f"✗ Database connection failed: {e}")
        import traceback
        traceback.print_exc()