# -*- coding: utf-8 -*-
"""库存变更任务"""

import json

from .base_task import BaseTask
from loaders.facts.inventory_change import InventoryChangeLoader
from models.parsers import TypeParser


class InventoryChangeTask(BaseTask):
    """同步库存变化记录"""

    def get_task_code(self) -> str:
        return "INVENTORY_CHANGE"

    def execute(self) -> dict:
        self.logger.info("开始执行 INVENTORY_CHANGE 任务")
        window_start, window_end, _ = self._get_time_window()
        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, _ = self.api.get_paginated(
                endpoint="/Inventory/ChangeList",
                params=params,
                page_size=self.config.get("api.page_size", 200),
                data_path=("data", "queryDeliveryRecordsList"),
            )

            parsed = []
            for raw in records:
                mapped = self._parse_change(raw)
                if mapped:
                    parsed.append(mapped)

            loader = InventoryChangeLoader(self.db)
            inserted, updated, skipped = loader.upsert_changes(parsed)

            self.db.commit()
            counts = {
                "fetched": len(records),
                "inserted": inserted,
                "updated": updated,
                "skipped": skipped,
                "errors": 0,
            }
            self.logger.info(f"INVENTORY_CHANGE 完成: {counts}")
            return self._build_result("SUCCESS", counts)
        except Exception:
            self.db.rollback()
            self.logger.error("INVENTORY_CHANGE 失败", exc_info=True)
            raise

    def _parse_change(self, raw: dict) -> dict | None:
        change_id = TypeParser.parse_int(
            raw.get("siteGoodsStockId") or raw.get("site_goods_stock_id")
        )
        if not change_id:
            self.logger.warning("跳过缺少变动 id 的库存记录: %s", raw)
            return None

        store_id = self.config.get("app.store_id")
        return {
            "store_id": store_id,
            "change_id": change_id,
            "site_goods_id": TypeParser.parse_int(
                raw.get("siteGoodsId") or raw.get("site_goods_id")
            ),
            "stock_type": raw.get("stockType") or raw.get("stock_type"),
            "goods_name": raw.get("goodsName"),
            "change_time": TypeParser.parse_timestamp(
                raw.get("createTime") or raw.get("create_time"), self.tz
            ),
            "start_qty": TypeParser.parse_int(raw.get("startNum")),
            "end_qty": TypeParser.parse_int(raw.get("endNum")),
            "change_qty": TypeParser.parse_int(raw.get("changeNum")),
            "unit": raw.get("unit"),
            "price": TypeParser.parse_decimal(raw.get("price")),
            "operator_name": raw.get("operatorName"),
            "remark": raw.get("remark"),
            "goods_category_id": TypeParser.parse_int(raw.get("goodsCategoryId")),
            "goods_second_category_id": TypeParser.parse_int(
                raw.get("goodsSecondCategoryId")
            ),
            "raw_data": json.dumps(raw, ensure_ascii=False),
        }