-- 创建订单表
CREATE TABLE IF NOT EXISTS orders (
    id SERIAL PRIMARY KEY,
    order_no VARCHAR(64) UNIQUE NOT NULL,
    user_id INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    product_type VARCHAR(32) NOT NULL,
    product_name VARCHAR(255) NOT NULL,
    amount DECIMAL(10, 2) NOT NULL,
    status VARCHAR(32) NOT NULL DEFAULT 'pending',
    payment_method VARCHAR(32),
    trade_no VARCHAR(128),
    callback_data TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    paid_at TIMESTAMP
);

-- 创建索引
CREATE INDEX IF NOT EXISTS idx_orders_order_no ON orders(order_no);
CREATE INDEX IF NOT EXISTS idx_orders_user_id ON orders(user_id);
CREATE INDEX IF NOT EXISTS idx_orders_status ON orders(status);
CREATE INDEX IF NOT EXISTS idx_orders_created_at ON orders(created_at);

-- 添加注释
COMMENT ON TABLE orders IS '订单表';
COMMENT ON COLUMN orders.order_no IS '订单号';
COMMENT ON COLUMN orders.user_id IS '用户ID';
COMMENT ON COLUMN orders.product_type IS '产品类型：standard/deployment/custom';
COMMENT ON COLUMN orders.product_name IS '产品名称';
COMMENT ON COLUMN orders.amount IS '订单金额';
COMMENT ON COLUMN orders.status IS '订单状态：pending/paid/failed/cancelled';
COMMENT ON COLUMN orders.payment_method IS '支付方式';
COMMENT ON COLUMN orders.trade_no IS '第三方交易号';
COMMENT ON COLUMN orders.callback_data IS '回调数据（JSON格式）';