package com.klp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.klp.common.core.page.TableDataInfo;
import com.klp.common.core.domain.PageQuery;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.klp.common.utils.StringUtils;
import com.klp.domain.WmsJournal;
import com.klp.mapper.WmsCustomerMapper;
import com.klp.mapper.WmsJournalMapper;
import com.klp.service.IWmsJournalService;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import com.klp.domain.bo.WmsReceivableBo;
import com.klp.domain.vo.WmsReceivableVo;
import com.klp.domain.WmsReceivable;
import com.klp.mapper.WmsReceivableMapper;
import com.klp.service.IWmsReceivableService;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Collection;

/**
 * 应收款管理（宽松版）Service业务层处理
 *
 * @author klp
 * @date 2025-08-13
 */
@RequiredArgsConstructor
@Service
public class WmsReceivableServiceImpl implements IWmsReceivableService {

    private final WmsReceivableMapper baseMapper;

    @Resource
    private WmsJournalMapper journalMapper;
    @Resource
    private WmsCustomerMapper customerMapper;
    @Resource
    private IWmsJournalService wmsJournalService;

    /**
     * 查询应收款管理（宽松版）
     */
    @Override
    public WmsReceivableVo queryById(Long receivableId){
        return baseMapper.selectVoById(receivableId);
    }

    /**
     * 查询应收款管理（宽松版）列表
     */
    @Override
    public TableDataInfo<WmsReceivableVo> queryPageList(WmsReceivableBo bo, PageQuery pageQuery) {
        QueryWrapper<WmsReceivable> lqw = buildQueryWrapperPlus(bo);
        Page<WmsReceivableVo> result = baseMapper.selectVoPagePlus(pageQuery.build(), lqw);
        return TableDataInfo.build(result);
    }

    private QueryWrapper<WmsReceivable> buildQueryWrapperPlus(WmsReceivableBo bo) {
        QueryWrapper<WmsReceivable> lqw = Wrappers.query();
        lqw.eq("r.del_flag", 0);
        lqw.eq(bo.getCustomerId() != null, "r.customer_id", bo.getCustomerId());
        lqw.eq(bo.getOrderId() != null, "r.order_id", bo.getOrderId());
        lqw.eq(bo.getDueDate() != null, "r.due_date", bo.getDueDate());
        lqw.eq(bo.getAmount() != null, "r.amount", bo.getAmount());
        lqw.eq(bo.getPaidAmount() != null, "r.paid_amount", bo.getPaidAmount());
        lqw.eq(bo.getBalanceAmount() != null, "r.balance_amount", bo.getBalanceAmount());
        lqw.eq(StringUtils.isNotBlank(bo.getStatus()), "r.status", bo.getStatus());
        //根据创建时间查询范围Date startTime Date endTime
        if (bo.getStartTime() != null && bo.getEndTime() != null) {
            lqw.between("r.create_time", bo.getStartTime(), bo.getEndTime());
        }
        return lqw;
    }

    /**
     * 查询应收款管理（宽松版）列表
     */
    @Override
    public List<WmsReceivableVo> queryList(WmsReceivableBo bo) {
        LambdaQueryWrapper<WmsReceivable> lqw = buildQueryWrapper(bo);
        return baseMapper.selectVoList(lqw);
    }

    private LambdaQueryWrapper<WmsReceivable> buildQueryWrapper(WmsReceivableBo bo) {
        Map<String, Object> params = bo.getParams();
        LambdaQueryWrapper<WmsReceivable> lqw = Wrappers.lambdaQuery();
        lqw.eq(bo.getCustomerId() != null, WmsReceivable::getCustomerId, bo.getCustomerId());
        lqw.eq(bo.getOrderId() != null, WmsReceivable::getOrderId, bo.getOrderId());
        lqw.eq(bo.getDueDate() != null, WmsReceivable::getDueDate, bo.getDueDate());
        lqw.eq(bo.getAmount() != null, WmsReceivable::getAmount, bo.getAmount());
        lqw.eq(bo.getPaidAmount() != null, WmsReceivable::getPaidAmount, bo.getPaidAmount());
        lqw.eq(bo.getBalanceAmount() != null, WmsReceivable::getBalanceAmount, bo.getBalanceAmount());
        lqw.eq(StringUtils.isNotBlank(bo.getStatus()), WmsReceivable::getStatus, bo.getStatus());
        return lqw;
    }

    /**
     * 新增应收款管理（宽松版）
     */
    @Override
    public Boolean insertByBo(WmsReceivableBo bo) {
        WmsReceivable add = BeanUtil.toBean(bo, WmsReceivable.class);
        validEntityBeforeSave(add);
        boolean flag = baseMapper.insert(add) > 0;
        if (flag) {
            bo.setReceivableId(add.getReceivableId());
        }
        return flag;
    }

    /**
     * 修改应收款管理（宽松版）
     */
    @Override
    public Boolean updateByBo(WmsReceivableBo bo) {
        WmsReceivable update = BeanUtil.toBean(bo, WmsReceivable.class);
        validEntityBeforeSave(update);
        return baseMapper.updateById(update) > 0;
    }

    /**
     * 保存前的数据校验
     */
    private void validEntityBeforeSave(WmsReceivable entity){
        //TODO 做一些数据校验,如唯一约束
    }

    /**
     * 批量删除应收款管理（宽松版）
     */
    @Override
    public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
        if(isValid){
            //TODO 做一些业务上的校验,判断是否需要校验
        }
        return baseMapper.deleteBatchIds(ids) > 0;
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public Boolean updatePaidAmountAndAddJournal(WmsReceivableBo bo) {
        // 1. 更新应收款已收金额
        WmsReceivable receivable = baseMapper.selectById(bo.getReceivableId());
        if (receivable == null) {
            throw new RuntimeException("应收款记录不存在");
        }
        // bo.getPaidAmount()传入的是变化量
        BigDecimal changePaidAmount = bo.getPaidAmount();
        BigDecimal newPaidAmount = receivable.getPaidAmount().add(changePaidAmount);

        WmsReceivable updateWmsReceivable = new WmsReceivable();
        updateWmsReceivable.setReceivableId(bo.getReceivableId());
        updateWmsReceivable.setPaidAmount(newPaidAmount);
        if(receivable.getPaidAmount().compareTo(BigDecimal.ZERO) == 0
            && changePaidAmount.compareTo(BigDecimal.ZERO) > 0){
            updateWmsReceivable.setStatus("部分支付");
        }
        if(newPaidAmount.compareTo(receivable.getAmount()) == 0){
            updateWmsReceivable.setStatus("已结清");
        }
        int countFlag = baseMapper.updateById(updateWmsReceivable);

        // 2. 新增资金日记账记录
        WmsJournal journal = new WmsJournal();
        journal.setJournalDate(new Date());
        journal.setSummary("客户付款");
        journal.setTransType("收入");
        journal.setCounterpart(customerMapper.selectById(receivable.getCustomerId()).getName());
        journal.setIncomeAmount(changePaidAmount);
        journal.setExpenseAmount(BigDecimal.ZERO);
        wmsJournalService.computeBalance(journal);
        journal.setRemark("应收款ID: " + bo.getReceivableId());
        countFlag += journalMapper.insert(journal);
        return countFlag == 2;
    }
}