package com.by4cloud.platformx.business.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.ObjUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.by4cloud.platformx.business.api.feign.RemoteFlowProcessService;
import com.by4cloud.platformx.business.constant.FlowNameEnum;
import com.by4cloud.platformx.business.dto.ContractAddDTO;
import com.by4cloud.platformx.business.dto.ContractUpdateDTO;
import com.by4cloud.platformx.business.entity.*;
import com.by4cloud.platformx.business.mapper.*;
import com.by4cloud.platformx.business.service.ContractService;
import com.by4cloud.platformx.business.utils.ContractNumberGenerator;
import com.by4cloud.platformx.business.vo.ContractDetailVo;
import com.by4cloud.platformx.common.core.util.R;
import com.by4cloud.platformx.common.security.util.SecurityUtils;
import com.by4cloud.platformx.flow.task.api.feign.RemoteBusinessService;
import com.by4cloud.platformx.flow.task.dto.ProcessInstanceParamDto;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

import java.io.Serializable;
import java.math.BigDecimal;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author cd
 * @description
 * @date 2026/4/29 14:07
 **/
@Service
@RequiredArgsConstructor
public class ContractServiceImpl extends ServiceImpl<ContractMapper, Contract> implements ContractService {

	private final ContractSubjectMatterMapper contractSubjectMatterMapper;
	private final ContractPaymentScheduleMapper contractPaymentScheduleMapper;
	private final ContractPaymentScheduleProcessMapper contractPaymentScheduleProcessMapper;
	private final PaymentConfirmMapper paymentConfirmMapper;
	private final CurrentOverdueMapper currentOverdueMapper;
	private final RemoteFlowProcessService remoteFlowProcessService;

	@Override
	public R add(ContractAddDTO addDTO) {
		Contract contract = BeanUtil.copyProperties(addDTO,Contract.class);
		contract.setPartyBId(SecurityUtils.getUser().getCompId());
		contract.setPartyB(SecurityUtils.getUser().getCompName());
		contract.setContractNo(ContractNumberGenerator.generateContractNumber());
		contract.setBillingStatus("0");
		contract.setErpPushFlag("0");
		List<Contract> contracts;
		contracts = baseMapper.selectList(Wrappers.<Contract>lambdaQuery().eq(Contract::getContractNo,contract.getContractNo()));
		while (ArrayUtil.isNotEmpty(contracts.toArray())){
			contract.setContractNo(ContractNumberGenerator.generateContractNumber());
			contracts = baseMapper.selectList(Wrappers.<Contract>lambdaQuery().eq(Contract::getContractNo,contract.getContractNo()));
		}
		baseMapper.insert(contract);

		if (ArrayUtil.isNotEmpty(addDTO.getContractSubjectMatter())){
			addDTO.getContractSubjectMatter().stream().forEach(contractSubjectMatterAddDTO -> {
				ContractSubjectMatter subjectMatter = BeanUtil.copyProperties(contractSubjectMatterAddDTO, ContractSubjectMatter.class);
				subjectMatter.setContractId(contract.getId());
				subjectMatter.setContractName(contract.getContractName());
				subjectMatter.setDeliveredQuantity(new BigDecimal("0"));
				subjectMatter.setDeliveryStatus(0);
				subjectMatter.setTotalAmount(contractSubjectMatterAddDTO.getQuantity().multiply(contractSubjectMatterAddDTO.getUnitPrice()));
				contractSubjectMatterMapper.insert(subjectMatter);
			});
		}

		if (ArrayUtil.isNotEmpty(addDTO.getContractPaymentSchedule())){
			AtomicInteger index = new AtomicInteger(1);
			addDTO.getContractPaymentSchedule().stream().forEach(contractPaymentScheduleAddDTO -> {
				int currentIndex = index.getAndIncrement();
				ContractPaymentSchedule schedule = BeanUtil.copyProperties(contractPaymentScheduleAddDTO, ContractPaymentSchedule.class);
				if (contractPaymentScheduleAddDTO.getStageName().equals("合同签订")){
					schedule.setEffectiveDate(DateUtil.offsetDay(contract.getSignDate(),contractPaymentScheduleAddDTO.getAgreedDays()));
				}
				if (ObjUtil.isNotNull(schedule.getEffectiveDate())) {
					if (schedule.getEffectiveDate().before(DateUtil.date())) {
						schedule.setFulfillmentStatus(1);
					} else {
						schedule.setFulfillmentStatus(0);
					}
				}
				schedule.setPaymentStatus(0);
				schedule.setContractId(contract.getId());
				schedule.setContractName(contract.getContractName());
				schedule.setPlannedAmount(contract.getAmount().multiply(schedule.getPaymentRatio().divide(new BigDecimal("100"))));
				schedule.setStageOrder(currentIndex);
				contractPaymentScheduleMapper.insert(schedule);
				if (contractPaymentScheduleAddDTO.getStageName().equals("货到签收")){
					contract.setArrivalScheduleId(schedule.getId());
					baseMapper.updateById(contract);
				}
				if (contractPaymentScheduleAddDTO.getStageName().equals("调试完成或验收")){
					contract.setAcceptScheduleId(schedule.getId());
					baseMapper.updateById(contract);
				}
			});

		}



		return R.ok();
	}

	@Override
	public R edit(ContractUpdateDTO updateDTO) {
		Contract entity = baseMapper.selectById(updateDTO.getId());
		if (!StrUtil.equals(entity.getContractStatus()+"","0")){
			return R.failed("当前状态无法修改合同");
		}
		Contract contract = BeanUtil.copyProperties(updateDTO,Contract.class);
		contract.setContractNo(ContractNumberGenerator.generateContractNumber());
		contract.setBillingStatus("0");
		contract.setErpPushFlag("0");
		List<Contract> contracts;
		contracts = baseMapper.selectList(Wrappers.<Contract>lambdaQuery().eq(Contract::getContractNo,contract.getContractNo()));
		while (ArrayUtil.isNotEmpty(contracts.toArray())){
			contract.setContractNo(ContractNumberGenerator.generateContractNumber());
			contracts = baseMapper.selectList(Wrappers.<Contract>lambdaQuery().eq(Contract::getContractNo,contract.getContractNo()));
		}
		baseMapper.updateById(contract);

		if (ArrayUtil.isNotEmpty(updateDTO.getContractSubjectMatter())){
			contractSubjectMatterMapper.delete(Wrappers.<ContractSubjectMatter>lambdaQuery().eq(ContractSubjectMatter::getContractId,contract.getId()));

			updateDTO.getContractSubjectMatter().stream().forEach(contractSubjectMatterAddDTO -> {
				ContractSubjectMatter subjectMatter = BeanUtil.copyProperties(contractSubjectMatterAddDTO, ContractSubjectMatter.class);
				subjectMatter.setContractId(contract.getId());
				subjectMatter.setContractName(contract.getContractName());
				subjectMatter.setDeliveredQuantity(new BigDecimal("0"));
				subjectMatter.setDeliveryStatus(0);
				contractSubjectMatterMapper.insert(subjectMatter);
			});
		}

		if (ArrayUtil.isNotEmpty(updateDTO.getContractPaymentSchedule())){
			contractPaymentScheduleMapper.delete(Wrappers.<ContractPaymentSchedule>lambdaQuery().eq(ContractPaymentSchedule::getContractId,contract.getId()));

			AtomicInteger index = new AtomicInteger(1);
			updateDTO.getContractPaymentSchedule().stream().forEach(contractPaymentScheduleAddDTO -> {
				int currentIndex = index.getAndIncrement();
				ContractPaymentSchedule schedule = BeanUtil.copyProperties(contractPaymentScheduleAddDTO, ContractPaymentSchedule.class);
				schedule.setContractId(contract.getId());
				schedule.setContractName(contract.getContractName());
				schedule.setPlannedAmount(contract.getAmount().multiply(schedule.getPaymentRatio().divide(new BigDecimal("100"))));
				schedule.setStageOrder(currentIndex);
				contractPaymentScheduleMapper.insert(schedule);
				if (contractPaymentScheduleAddDTO.getStageName().equals("货到签收")){
					contract.setArrivalScheduleId(schedule.getId());
					baseMapper.updateById(contract);
				}
				if (contractPaymentScheduleAddDTO.getStageName().equals("调试完成或验收")){
					contract.setAcceptScheduleId(schedule.getId());
					baseMapper.updateById(contract);
				}
			});

		}

		return R.ok();
	}

	@Override
	public ContractDetailVo detail(Long id) {
		Contract contract = baseMapper.selectById(id);
		ContractDetailVo detailVo = BeanUtil.copyProperties(contract,ContractDetailVo.class);
		List<ContractSubjectMatter> subjectMatterList = contractSubjectMatterMapper.selectList(Wrappers.<ContractSubjectMatter>lambdaQuery().eq(ContractSubjectMatter::getContractId,id));
		detailVo.setContractSubjectMatter(subjectMatterList);
		List<ContractPaymentSchedule> paymentScheduleList = contractPaymentScheduleMapper.selectList(Wrappers.<ContractPaymentSchedule>lambdaQuery().eq(ContractPaymentSchedule::getContractId,contract.getId()));
		detailVo.setContractPaymentSchedule(paymentScheduleList);
		return detailVo;
	}

	@Override
	public R startApproval(Long id) {
		Contract contract = baseMapper.selectById(id);
		//启动流程
		ProcessInstanceParamDto dto = new ProcessInstanceParamDto();
		Map<String, Object> map = BeanUtil.beanToMap(contract);
		dto.setParamMap(map);
		dto.setFlowName(FlowNameEnum.合同审批.name());
		R r1 = remoteFlowProcessService.startProcessInstance(dto);
		if (r1.getCode() == 1) {
			return R.failed("流程启动失败");
		}
		contract.setContractStatus(2);
		baseMapper.updateById(contract);
		return R.ok();
	}

	public void takeEffect(Long id) {
		Contract contract = baseMapper.selectById(id);
		contract.setContractStatus(1);
		baseMapper.updateById(contract);
		ContractPaymentSchedule fitstSchedule = contractPaymentScheduleMapper.selectOne(Wrappers.<ContractPaymentSchedule>lambdaQuery().eq(ContractPaymentSchedule::getContractId,contract.getId())
				.orderByAsc(ContractPaymentSchedule::getCreateTime).last("limit 1"));
		if (fitstSchedule.getStageName().equals("合同签订")){
			//新增应收
			PaymentConfirm paymentConfirm = new PaymentConfirm();
			paymentConfirm.setBusinessType("合同签订应收");
			paymentConfirm.setBusGuestId(contract.getPartyAId());
			paymentConfirm.setBusGuestName(contract.getPartyA());
			paymentConfirm.setContractId(contract.getId());
			paymentConfirm.setContractName(contract.getContractName());
			paymentConfirm.setContractNo(contract.getContractNo());
			paymentConfirm.setScheduleId(fitstSchedule.getId());
			paymentConfirm.setScheduleName(fitstSchedule.getStageName());
			paymentConfirm.setConfirmTime(new Date());
			paymentConfirm.setTransationAmount(fitstSchedule.getPlannedAmount());
			paymentConfirm.setReceivableAmount(fitstSchedule.getPlannedAmount());
			paymentConfirm.setTotalAmount(fitstSchedule.getPlannedAmount().multiply(new BigDecimal("-1")));
			PaymentConfirm lastNewConfirm = paymentConfirmMapper.selectOne(Wrappers.<PaymentConfirm>lambdaQuery().eq(PaymentConfirm::getContractId,contract.getId())
					.orderByDesc(PaymentConfirm::getCreateTime).last("limit 1"));
			BigDecimal lastNewTotal = new BigDecimal("0");
			if(ObjUtil.isNotNull(lastNewConfirm)){
				lastNewTotal = lastNewConfirm.getTotalAmount();
			}
			paymentConfirm.setTotalAmount(lastNewTotal.subtract(paymentConfirm.getReceivableAmount()));
			paymentConfirmMapper.insert(paymentConfirm);
			//新增合同履约记录
			ContractPaymentScheduleProcess process = new ContractPaymentScheduleProcess();
			process.setContractId(contract.getId());
			process.setContractName(contract.getContractName());
			process.setScheduleId(fitstSchedule.getId());
			process.setScheduleName(fitstSchedule.getStageName());
			process.setProcessDate(contract.getSignDate());
			contractPaymentScheduleProcessMapper.insert(process);
			//当前为合同最后阶段
			PaymentConfirm newConfirm = paymentConfirmMapper.selectOne(Wrappers.<PaymentConfirm>lambdaQuery().eq(PaymentConfirm::getContractId,contract.getId())
					.orderByDesc(PaymentConfirm::getCreateTime).last("limit 1"));
			if (newConfirm.getTotalAmount().compareTo(new BigDecimal("0"))>=0){
				//有预付且超过应收 关闭合同状态
				contract.setContractStatus(3);
				baseMapper.updateById(contract);
			}
		}else if (fitstSchedule.getStageName().equals("发货前")) {
			//更新合同下个阶段
			contract.setNextScheduleName("无");
			baseMapper.updateById(contract);
		}else if (fitstSchedule.getStageName().equals("货到签收")) {
			//更新合同下个阶段
			contract.setNextScheduleName("货到签收");
			baseMapper.updateById(contract);
		}else if (fitstSchedule.getStageName().equals("调试完成或验收")) {
			//更新合同下个阶段
			contract.setNextScheduleName("调试完成或验收");
			baseMapper.updateById(contract);
		}else {
			//新增应收
			PaymentConfirm paymentConfirm = new PaymentConfirm();
			paymentConfirm.setBusinessType("质保金");
			paymentConfirm.setBusGuestId(contract.getPartyAId());
			paymentConfirm.setBusGuestName(contract.getPartyA());
			paymentConfirm.setContractId(contract.getId());
			paymentConfirm.setContractName(contract.getContractName());
			paymentConfirm.setContractNo(contract.getContractNo());
			paymentConfirm.setScheduleId(fitstSchedule.getId());
			paymentConfirm.setScheduleName(fitstSchedule.getStageName());
			paymentConfirm.setConfirmTime(new Date());
			paymentConfirm.setTransationAmount(fitstSchedule.getPlannedAmount());
			paymentConfirm.setReceivableAmount(fitstSchedule.getPlannedAmount());
			paymentConfirm.setTotalAmount(fitstSchedule.getPlannedAmount().multiply(new BigDecimal("-1")));
			PaymentConfirm lastNewConfirm = paymentConfirmMapper.selectOne(Wrappers.<PaymentConfirm>lambdaQuery().eq(PaymentConfirm::getContractId,contract.getId())
					.orderByDesc(PaymentConfirm::getCreateTime).last("limit 1"));
			BigDecimal lastNewTotal = new BigDecimal("0");
			if(ObjUtil.isNotNull(lastNewConfirm)){
				lastNewTotal = lastNewConfirm.getTotalAmount();
			}
			paymentConfirm.setTotalAmount(lastNewTotal.subtract(paymentConfirm.getReceivableAmount()));
			paymentConfirmMapper.insert(paymentConfirm);
		}
		//查询是否有后续阶段
		List<ContractPaymentSchedule> afterSchedule = contractPaymentScheduleMapper.selectList(Wrappers.<ContractPaymentSchedule>lambdaQuery()
				.eq(ContractPaymentSchedule::getContractId, fitstSchedule.getContractId())
				.gt(ContractPaymentSchedule::getStageOrder, fitstSchedule.getStageOrder())
				.orderByAsc(ContractPaymentSchedule::getCreateTime));
		if (ArrayUtil.isNotEmpty(afterSchedule.toArray())&&afterSchedule.size()==1){
			//最后阶段生效时间
			ContractPaymentSchedule endSchedule = afterSchedule.get(0);
			if (StrUtil.equals(endSchedule.getStageName(),"质保金")){
				endSchedule.setEffectiveDate(DateUtil.offsetDay(new Date(),endSchedule.getAgreedDays()));
				endSchedule.setEffectiveEndDate(contract.getExpirationDate());
				contractPaymentScheduleMapper.updateById(endSchedule);
				//第一阶段生效时间
				fitstSchedule.setEffectiveDate(DateUtil.offsetDay(contract.getSignDate(),fitstSchedule.getAgreedDays()));
				fitstSchedule.setEffectiveEndDate(endSchedule.getEffectiveDate());
				contractPaymentScheduleMapper.updateById(fitstSchedule);

				//最后阶段应收
				PaymentConfirm newConfim = new PaymentConfirm();
				newConfim.setBusinessType(endSchedule.getStageName()+"应收");
				newConfim.setBusGuestId(contract.getPartyAId());
				newConfim.setBusGuestName(contract.getPartyA());
				newConfim.setContractId(contract.getId());
				newConfim.setContractName(contract.getContractName());
				newConfim.setContractNo(contract.getContractNo());
				newConfim.setScheduleId(endSchedule.getId());
				newConfim.setScheduleName(endSchedule.getStageName());
				newConfim.setConfirmTime(new Date());
				newConfim.setTransationAmount(endSchedule.getPlannedAmount());
				newConfim.setReceivableAmount(endSchedule.getPlannedAmount());
				PaymentConfirm lastNewConfirm = paymentConfirmMapper.selectOne(Wrappers.<PaymentConfirm>lambdaQuery().eq(PaymentConfirm::getContractId,contract.getId())
						.orderByDesc(PaymentConfirm::getCreateTime).last("limit 1"));
				BigDecimal lastNewTotal = new BigDecimal("0");
				if(ObjUtil.isNotNull(lastNewConfirm)){
					lastNewTotal = lastNewConfirm.getTotalAmount();
				}
				newConfim.setTotalAmount(lastNewTotal.subtract(newConfim.getReceivableAmount()));
				paymentConfirmMapper.insert(newConfim);
			}
			//更新合同下个阶段
			contract.setNextScheduleName(endSchedule.getStageName());
			baseMapper.updateById(contract);
		}
		if(ArrayUtil.isNotEmpty(afterSchedule.toArray())&&afterSchedule.size()>1){
			//第一阶段生效时间
			fitstSchedule.setEffectiveDate(DateUtil.offsetDay(contract.getSignDate(),fitstSchedule.getAgreedDays()));
			contractPaymentScheduleMapper.updateById(fitstSchedule);
			//更新合同下个阶段
			contract.setNextScheduleName(afterSchedule.get(0).getStageName());
			baseMapper.updateById(contract);
		}
		//只有当前合同签字阶段
		if(ArrayUtil.isEmpty(afterSchedule.toArray())){
			fitstSchedule.setEffectiveDate(DateUtil.offsetDay(contract.getSignDate(),fitstSchedule.getAgreedDays()));
			fitstSchedule.setEffectiveEndDate(contract.getExpirationDate());
			contractPaymentScheduleMapper.updateById(fitstSchedule);
		}
	}

	@Override
	public R genCurrentOverdue() {
		List<ContractPaymentSchedule> scheduleList = contractPaymentScheduleMapper.selectList(Wrappers.<ContractPaymentSchedule>lambdaQuery()
				.lt(ContractPaymentSchedule::getEffectiveEndDate, DateUtil.today())
				.ne(ContractPaymentSchedule::getPaymentStatus,"2"));
		if (ArrayUtil.isNotEmpty(scheduleList.toArray())){
			scheduleList.stream().forEach(contractPaymentSchedule -> {
				Contract contract = baseMapper.selectById(contractPaymentSchedule.getContractId());
				//应收超期
				PaymentConfirm overdueConfirm = new PaymentConfirm();
				overdueConfirm.setBusinessType("应收超期");
				overdueConfirm.setBusGuestId(contract.getPartyAId());
				overdueConfirm.setBusGuestName(contract.getPartyA());
				overdueConfirm.setContractId(contract.getId());
				overdueConfirm.setContractName(contract.getContractName());
				overdueConfirm.setContractNo(contract.getContractNo());
				overdueConfirm.setConfirmTime(new Date());
				overdueConfirm.setScheduleId(contractPaymentSchedule.getId());
				overdueConfirm.setScheduleName(contractPaymentSchedule.getStageName());
				PaymentConfirm newLastConfirm = paymentConfirmMapper.selectOne(Wrappers.<PaymentConfirm>lambdaQuery().eq(PaymentConfirm::getContractId,contract.getId())
						.orderByDesc(PaymentConfirm::getCreateTime).last("limit 1"));
				overdueConfirm.setTransationAmount(StrUtil.equals(contractPaymentSchedule.getPaymentStatus()+"","0")?
						contractPaymentSchedule.getPlannedAmount():
						contractPaymentSchedule.getPlannedAmount().subtract(contractPaymentSchedule.getActualAmount()));
				overdueConfirm.setReceivableAmount(newLastConfirm.getTotalAmount().multiply(new BigDecimal("-1")));
				overdueConfirm.setOverdueAmount(overdueConfirm.getTransationAmount());
				overdueConfirm.setTotalAmount(newLastConfirm.getTotalAmount());
				overdueConfirm.setCompId(contract.getCompId());
				//判断当前阶段是否已生成上阶段应收超期
				PaymentConfirm oiverdueConfirm = paymentConfirmMapper.selectOne(Wrappers.<PaymentConfirm>lambdaQuery().eq(PaymentConfirm::getScheduleId, contractPaymentSchedule.getId())
						.eq(PaymentConfirm::getBusinessType, "应收超期"));
				if (ObjUtil.isNull(oiverdueConfirm)) {
					overdueConfirm.setCompId(contractPaymentSchedule.getCompId());
					paymentConfirmMapper.insert(overdueConfirm);
				}
				//当前逾期
				CurrentOverdue currentOverdue = new CurrentOverdue();
				currentOverdue.setBusGuestId(contract.getPartyAId());
				currentOverdue.setBusGuestName(contract.getPartyA());
				currentOverdue.setContractId(contractPaymentSchedule.getContractId());
				currentOverdue.setContractName(contractPaymentSchedule.getContractName());
				currentOverdue.setScheduleId(contractPaymentSchedule.getId());
				currentOverdue.setScheduleName(contractPaymentSchedule.getStageName());
				currentOverdue.setCompId(contract.getCompId());
				currentOverdue.setContractExpirTime(contractPaymentSchedule.getEffectiveEndDate());
				currentOverdue.setReceivableAmount(StrUtil.equals(contractPaymentSchedule.getPaymentStatus()+"","0")?
						contractPaymentSchedule.getPlannedAmount():contractPaymentSchedule.getPlannedAmount().subtract(contractPaymentSchedule.getActualAmount()));
				currentOverdue.setOverdueDuration(BigDecimal.valueOf(DateUtil.betweenDay(contractPaymentSchedule.getEffectiveEndDate(),new Date(),true)));
				CurrentOverdue overdue = currentOverdueMapper.selectOne(Wrappers.<CurrentOverdue>lambdaQuery().eq(CurrentOverdue::getContractId,currentOverdue.getContractId())
						.eq(CurrentOverdue::getScheduleId,currentOverdue.getScheduleId()).last("limit 1"));
				if (ObjUtil.isNull(overdue)){
					currentOverdue.setCompId(contractPaymentSchedule.getCompId());
					currentOverdueMapper.insert(currentOverdue);
				}else {
					overdue.setOverdueDuration(BigDecimal.valueOf(DateUtil.betweenDay(contractPaymentSchedule.getEffectiveEndDate(),new Date(),true)));
					currentOverdueMapper.updateById(overdue);
				}
			});
		}
		return R.ok();
	}
}