# -*- coding: utf-8 -*-
"""订单ETL任务"""
import json
from .base_task import BaseTask
from loaders.facts.order import OrderLoader
from models.parsers import TypeParser

class OrdersTask(BaseTask):
    """订单数据ETL任务"""
    
    def get_task_code(self) -> str:
        return "ORDERS"
    
    def execute(self) -> dict:
        """执行订单数据ETL"""
        self.logger.info(f"开始执行 {self.get_task_code()} 任务")
        
        # 1. 获取时间窗口
        window_start, window_end, window_minutes = self._get_time_window()
        
        # 2. 调用API获取数据
        params = {
            "storeId": self.config.get("app.store_id"),
            "startTime": TypeParser.format_timestamp(window_start, self.tz),
            "endTime": TypeParser.format_timestamp(window_end, self.tz),
        }
        
        try:
            records, pages_meta = self.api.get_paginated(
                endpoint="/order/list",
                params=params,
                page_size=self.config.get("api.page_size", 200),
                data_path=("data",)
            )
            
            # 3. 解析并清洗数据
            parsed_records = []
            for rec in records:
                parsed = self._parse_order(rec)
                if parsed:
                    parsed_records.append(parsed)
            
            # 4. 加载数据
            loader = OrderLoader(self.db)
            store_id = self.config.get("app.store_id")
            inserted, updated, skipped = loader.upsert_orders(
                parsed_records,
                store_id
            )
            
            # 5. 提交事务
            self.db.commit()
            
            counts = {
                "fetched": len(records),
                "inserted": inserted,
                "updated": updated,
                "skipped": skipped,
                "errors": 0
            }
            
            self.logger.info(
                f"{self.get_task_code()} 完成: {counts}"
            )
            
            return self._build_result("SUCCESS", counts)
            
        except Exception as e:
            self.db.rollback()
            self.logger.error(f"{self.get_task_code()} 失败", exc_info=True)
            raise
    
    def _parse_order(self, raw: dict) -> dict:
        """解析单条订单记录"""
        try:
            return {
                "store_id": self.config.get("app.store_id"),
                "order_id": TypeParser.parse_int(raw.get("orderId")),
                "order_no": raw.get("orderNo"),
                "member_id": TypeParser.parse_int(raw.get("memberId")),
                "table_id": TypeParser.parse_int(raw.get("tableId")),
                "order_time": TypeParser.parse_timestamp(raw.get("orderTime"), self.tz),
                "end_time": TypeParser.parse_timestamp(raw.get("endTime"), self.tz),
                "total_amount": TypeParser.parse_decimal(raw.get("totalAmount")),
                "discount_amount": TypeParser.parse_decimal(raw.get("discountAmount")),
                "final_amount": TypeParser.parse_decimal(raw.get("finalAmount")),
                "pay_status": raw.get("payStatus"),
                "order_status": raw.get("orderStatus"),
                "remark": raw.get("remark"),
                "raw_data": json.dumps(raw, ensure_ascii=False)
            }
        except Exception as e:
            self.logger.warning(f"解析订单失败: {e}, 原始数据: {raw}")
            return None