package com.ruoyi.sales.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.common.enums.StockOutQualifiedRecordTypeEnum;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.procurementrecord.utils.StockUtils;
import com.ruoyi.sales.mapper.SalesLedgerMapper;
import com.ruoyi.sales.mapper.SalesLedgerProductMapper;
import com.ruoyi.sales.mapper.WeighingRecordMapper;
import com.ruoyi.sales.pojo.SalesLedger;
import com.ruoyi.sales.pojo.SalesLedgerProduct;
import com.ruoyi.sales.pojo.WeighingRecord;
import com.ruoyi.sales.service.IWeighingRecordService;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;

@Service
@Slf4j
@RequiredArgsConstructor
public class WeighingRecordServiceImpl extends ServiceImpl<WeighingRecordMapper, WeighingRecord> implements IWeighingRecordService {

    private final WeighingRecordMapper weighingRecordMapper;
    private final SalesLedgerProductMapper salesLedgerProductMapper;
    private final SalesLedgerMapper salesLedgerMapper;
    private final StockUtils stockUtils;

    @Override
    public IPage<WeighingRecord> listPage(Page<WeighingRecord> page, WeighingRecord weighingRecord) {
        LambdaQueryWrapper<WeighingRecord> queryWrapper = new LambdaQueryWrapper<>();
        // 流水号（模糊查询）
        queryWrapper.like(StringUtils.isNotBlank(weighingRecord.getSerialNo()),
                WeighingRecord::getSerialNo, weighingRecord.getSerialNo());

        // 车号（模糊查询）
        queryWrapper.like(StringUtils.isNotBlank(weighingRecord.getCarNo()),
                WeighingRecord::getCarNo, weighingRecord.getCarNo());

        // 货名（模糊查询）
        queryWrapper.like(StringUtils.isNotBlank(weighingRecord.getGoodsName()),
                WeighingRecord::getGoodsName, weighingRecord.getGoodsName());

        // 收货单位（模糊查询）
        queryWrapper.like(StringUtils.isNotBlank(weighingRecord.getReceiveUnit()),
                WeighingRecord::getReceiveUnit, weighingRecord.getReceiveUnit());

        // 发货单位（精确查询，可选）
        queryWrapper.eq(StringUtils.isNotBlank(weighingRecord.getShipUnit()),
                WeighingRecord::getShipUnit, weighingRecord.getShipUnit());
        return weighingRecordMapper.selectPage(page, queryWrapper);
    }

    /**
     * 根据客户、产品名称、规格型号匹配销售台账产品并出库
     * @param receiveUnit 收货单位（客户名称）
     * @param goodsName 货名（产品名称）
     * @param specification 规格
     * @param quantity 数量（净重）
     * @param recordId 磅单记录ID（作为关联记录ID）
     * @return 匹配到的销售台账产品ID，未匹配返回null
     */
    public Long matchAndOutStock(String receiveUnit, String goodsName, String specification, BigDecimal quantity, Long recordId) {
        // 1. 查询所有销售台账产品（只查询未发货的）
        LambdaQueryWrapper<SalesLedgerProduct> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SalesLedgerProduct::getType, 1);  // 销售类型
        List<SalesLedgerProduct> productList = salesLedgerProductMapper.selectList(queryWrapper);
        if (productList == null || productList.isEmpty()) {
            log.warn("未找到未发货的销售台账产品数据");
            return null;
        }

        // 2. 遍历匹配：客户名称 + 产品大类 + 规格型号
        for (SalesLedgerProduct product : productList) {
            // 获取对应的销售台账主表信息
            SalesLedger salesLedger = salesLedgerMapper.selectById(product.getSalesLedgerId());
            if (salesLedger == null) {
                continue;
            }

            // 匹配条件：收货单位=客户名称，货名=产品大类，规格=规格型号
            boolean customerMatch = receiveUnit != null && receiveUnit.equals(salesLedger.getCustomerName());
            boolean goodsMatch = goodsName != null && goodsName.equals(product.getProductCategory());
            boolean specMatch = specification != null && specification.equals(product.getSpecificationModel());

            if (customerMatch && goodsMatch && specMatch) {
                // 3. 匹配成功，执行出库
                try {
                    WeighingRecord weighingRecord = new WeighingRecord();
                    weighingRecord.setRecordId(product.getId());
                    weighingRecord.setId(recordId);
                    this.updateById(weighingRecord);
                    stockUtils.substractStock(
                            product.getProductModelId(),
                            quantity,
                            StockOutQualifiedRecordTypeEnum.WEIGHBRIDGE_OUT.getCode(),  // 磅单出库类型
                            recordId             // 磅单ID作为关联记录ID
                    );
                    log.info("磅单出库成功：客户={}, 产品={}, 规格={}, 数量={}, 磅单ID={}",
                            receiveUnit, goodsName, specification, quantity, recordId);
                    return product.getId();
                } catch (Exception e) {
                    log.error("磅单出库失败：{}", e.getMessage());
                    throw new RuntimeException("出库失败：" + e.getMessage());
                }
            }
        }

        log.warn("未匹配到销售台账产品：客户={}, 产品={}, 规格={}", receiveUnit, goodsName, specification);
        return null;
    }
}