package com.ruoyi.account.service.impl.sales;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.account.bean.dto.sales.AccountSalesCollectionDto;
import com.ruoyi.account.bean.vo.sales.AccountSalesCollectionVo;
import com.ruoyi.account.bean.vo.sales.SalesOutboundVo;
import com.ruoyi.account.mapper.AccountStatementDetailsMapper;
import com.ruoyi.account.mapper.sales.AccountSalesCollectionMapper;
import com.ruoyi.account.pojo.AccountStatementDetails;
import com.ruoyi.account.pojo.sales.AccountSalesCollection;
import com.ruoyi.account.service.sales.AccountSalesCollectionService;
import com.ruoyi.common.exception.ServiceException;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.sales.dto.SaveReceiptPaymentDto;
import com.ruoyi.sales.mapper.SalesLedgerMapper;
import com.ruoyi.sales.pojo.SalesLedger;
import jakarta.servlet.http.HttpServletResponse;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Arrays;
import java.util.List;
import java.util.Random;
import java.util.stream.Collectors;

/**
 * <p>
 * 财务管理--收款单 服务实现类
 * </p>
 *
 * @author 芯导软件（江苏）有限公司
 * @since 2026-05-18 03:49:56
 */
@Service
@RequiredArgsConstructor
public class AccountSalesCollectionServiceImpl extends ServiceImpl<AccountSalesCollectionMapper, AccountSalesCollection> implements AccountSalesCollectionService {

    private final AccountSalesCollectionMapper accountSalesCollectionMapper;
    private final AccountStatementDetailsMapper accountStatementDetailsMapper;
    private final SalesLedgerMapper salesLedgerMapper;
    private static final DateTimeFormatter CODE_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyMMddHHmmss");


    @Override
    public IPage<AccountSalesCollectionVo> listPageAccountSalesCollection(Page page, AccountSalesCollectionDto accountSalesCollectionDto) {
        return accountSalesCollectionMapper.listPageAccountSalesCollection(page, accountSalesCollectionDto);
    }

    @Override
    public boolean addAccountSalesCollection(AccountSalesCollection accountSalesCollection) {
        if (StringUtils.isEmpty(accountSalesCollection.getCollectionNumber())) {
            accountSalesCollection.setCollectionNumber(genAccountSalesCollectionNo());
        }
        String stockOutRecordIds = accountSalesCollection.getStockOutRecordIds();
        if (stockOutRecordIds != null && !stockOutRecordIds.isEmpty()) {
            List<Long> ids = Arrays.stream(stockOutRecordIds.split(","))
                    .map(Long::valueOf)
                    .toList();
            if (accountSalesCollectionMapper.existsByStockOutRecordId(ids)){
                throw new ServiceException("存在重复的出库单");
            }
        }
        return save(accountSalesCollection);
    }

    @Override
    public void exportAccountSalesCollection(HttpServletResponse response, AccountSalesCollectionDto accountSalesCollectionDto) {
        List<AccountSalesCollectionVo> list = accountSalesCollectionMapper.listPageAccountSalesCollection(new Page(1,-1),accountSalesCollectionDto).getRecords();
        ExcelUtil<AccountSalesCollectionVo> util = new ExcelUtil<>(AccountSalesCollectionVo.class);
        util.exportExcel(response, list , "收款单");
    }

    @Override
    public boolean deleteAccountSalesCollection(List<Long> ids) {
        //如果该收款单已经生成对账单则无法删除
        List<AccountSalesCollection> accountSalesCollections = accountSalesCollectionMapper.selectByIds(ids);
        List<String> strings = accountSalesCollections.stream().map(AccountSalesCollection::getCollectionNumber).toList();
        List<AccountStatementDetails> accountStatementDetails = accountStatementDetailsMapper.selectList(Wrappers.<AccountStatementDetails>lambdaQuery()
                .in(AccountStatementDetails::getReceiptNumber, strings));
        if (CollectionUtils.isNotEmpty(accountStatementDetails)){
            throw new ServiceException("该收款单已经生成对账单，无法删除");
        }
        return removeByIds(ids);
    }

    @Override
    public List<SalesOutboundVo> getOutboundBatchesByCustomer(Integer customerId) {
        return accountSalesCollectionMapper.getOutboundBatchesByCustomer(customerId);
    }

    @Override
    public boolean saveReceiptPayment(SaveReceiptPaymentDto dto) {
        if (dto.getPaymentDate() == null) {
            throw new ServiceException("请选择回款日期");
        }
        if (dto.getPaymentAmount() == null || dto.getPaymentAmount().compareTo(BigDecimal.valueOf(0.01)) < 0) {
            throw new ServiceException("请输入回款金额");
        }
        if (StringUtils.isEmpty(dto.getSalesContractNo())) {
            throw new ServiceException("销售合同号不能为空");
        }
        if (dto.getCustomerId() == null) {
            throw new ServiceException("客户不能为空");
        }

        SalesLedger salesLedger = salesLedgerMapper.selectOne(new LambdaQueryWrapper<SalesLedger>()
                .eq(SalesLedger::getSalesContractNo, dto.getSalesContractNo()));
        if (salesLedger == null) {
            throw new ServiceException("销售合同不存在");
        }
        if (salesLedger.getCustomerId() == null || salesLedger.getCustomerId().longValue() != dto.getCustomerId().longValue()) {
            throw new ServiceException("客户与合同不匹配");
        }

        List<Long> stockOutRecordIds = accountSalesCollectionMapper.selectStockOutRecordIdsBySalesLedgerId(salesLedger.getId());
        if (CollectionUtils.isEmpty(stockOutRecordIds)) {
            throw new ServiceException("该合同暂无可回款的销售出库记录");
        }

        AccountSalesCollection collection = new AccountSalesCollection();
        collection.setCustomerId(dto.getCustomerId().intValue());
        collection.setStockOutRecordIds(stockOutRecordIds.stream().map(String::valueOf).collect(Collectors.joining(",")));
        collection.setCollectionDate(dto.getPaymentDate());
        collection.setCollectionAmount(dto.getPaymentAmount());
        collection.setCollectionMethod(dto.getPaymentMethod());
        collection.setCollectionNumber(genAccountSalesCollectionNo());
        collection.setRemark(dto.getRemark());
        return save(collection);
    }

    private String genAccountSalesCollectionNo() {
        return "SK" + LocalDateTime.now().format(CODE_TIME_FORMATTER) + new Random().nextInt(10);
    }
}