# config/database.py
# 统一的数据库配置

import os

# ================= SQL Server 配置 =================
SQL_SERVER_CONFIG = {
    'driver': os.environ.get('DB_DRIVER', 'ODBC Driver 18 for SQL Server'),
    'server': os.environ.get('DB_SERVER', ''),
    'database': os.environ.get('DB_DATABASE', ''),
    'username': os.environ.get('DB_USERNAME', ''),
    'password': os.environ.get('DB_PASSWORD', ''),
    'TrustServerCertificate': 'yes'
}

# ================= Access 驱动配置 =================
ACCESS_DRIVER = "{Microsoft Access Driver (*.mdb, *.accdb)}"

# ================= 兼容性别名 =================
# 为了兼容旧代码，提供不同命名风格的别名

# SQL_SERVER_CONN - 兼容 db_utils.py (使用 uid/pwd)
SQL_SERVER_CONN = {
    'driver': f"{{{SQL_SERVER_CONFIG['driver']}}}",
    'server': SQL_SERVER_CONFIG['server'],
    'database': SQL_SERVER_CONFIG['database'],
    'uid': SQL_SERVER_CONFIG['username'],
    'pwd': SQL_SERVER_CONFIG['password']
}

# DB_CONFIG - 兼容 etl_manager.py, migration.py (使用 username/password)
DB_CONFIG = SQL_SERVER_CONFIG.copy()