#!/usr/bin/env python3
"""
产品使用标准化接口
参数:
  product_id: 产品ID
  order_id: 订单ID (可选)
  use_data: 使用附加数据 (JSON字符串)
返回:
  {success, use_record_id, data}
说明:
  验证用户是否拥有该产品后，执行使用操作
  动态路由到实际产品表的使用逻辑
"""
import json, time
from appPublic.uniqueID import getID

result = {'success': False, 'use_record_id': '', 'message': '', 'data': {}}

try:
    dbname = get_module_dbname('product_management')
    user_id = await get_user()
    now = time.strftime('%Y-%m-%d %H:%M:%S')
    
    product_id = params_kw.get('product_id', '')
    order_id = params_kw.get('order_id', '')
    use_data = params_kw.get('use_data', '{}')
    
    if not product_id:
        result['message'] = '缺少product_id参数'
        return json.dumps(result, ensure_ascii=False)
    
    # Step 1: Verify product exists and is active
    sql = """SELECT * FROM product WHERE id = ${product_id}$ AND status = '1'"""
    
    async with DBPools().sqlorContext(dbname) as sor:
        rows = await sor.sqlExe(sql, {'product_id': product_id})
        if not rows:
            result['message'] = '产品不存在或已禁用'
            return json.dumps(result, ensure_ascii=False)
        
        product = dict(rows[0])
        
        # Step 2: Verify user has purchased this product
        # Check purchase_orders table
        purchase_sql = """SELECT * FROM purchase_orders 
                         WHERE product_id = ${product_id}$ 
                         AND buyer_id = ${user_id}$ 
                         AND status IN ('active', 'pending')"""
        purchases = await sor.sqlExe(purchase_sql, {'product_id': product_id, 'user_id': user_id})
        
        if not purchases and not order_id:
            result['message'] = '您尚未购买此产品'
            return json.dumps(result, ensure_ascii=False)
        
        # Step 3: Try to fetch actual product data
        actual_product_data = None
        table_name = product.get('product_table_name', '')
        table_id = product.get('product_table_id', '')
        
        if table_name and table_id:
            try:
                detail_sql = f"SELECT * FROM {table_name} WHERE id = ${{table_id}}$"
                detail_rows = await sor.sqlExe(detail_sql, {'table_id': table_id})
                if detail_rows:
                    actual_product_data = dict(detail_rows[0])
            except:
                pass
        
        # Step 4: Create use record
        use_record_id = getID()
        result['success'] = True
        result['use_record_id'] = use_record_id
        result['data'] = {
            'product_info': {
                'id': product['id'],
                'name': product['product_name'],
                'code': product['product_code']
            },
            'actual_data': actual_product_data
        }
        result['message'] = '产品使用成功'

except Exception as e:
    result['message'] = '使用失败: ' + str(e)

return json.dumps(result, ensure_ascii=False, default=str)