package com.ruoyi.device.service.impl;

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.utils.bean.BeanUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.device.dto.DeviceMaintenanceDto;
import com.ruoyi.device.execl.DeviceMaintenanceExeclDto;
import com.ruoyi.device.mapper.DeviceMaintenanceMapper;
import com.ruoyi.device.pojo.DeviceLedger;
import com.ruoyi.device.pojo.DeviceMaintenance;
import com.ruoyi.device.service.IDeviceLedgerService;
import com.ruoyi.device.service.IDeviceMaintenanceService;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.measuringinstrumentledger.mapper.SparePartsMapper;
import com.ruoyi.measuringinstrumentledger.pojo.SpareParts;
import com.ruoyi.measuringinstrumentledger.pojo.SparePartsRequisitionRecord;
import com.ruoyi.measuringinstrumentledger.service.SparePartsRequisitionRecordService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.servlet.http.HttpServletResponse;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

@Service
public class DeviceMaintenanceServiceImpl extends ServiceImpl<DeviceMaintenanceMapper, DeviceMaintenance> implements IDeviceMaintenanceService {

    @Autowired
    private DeviceMaintenanceMapper deviceMaintenanceMapper;
    @Autowired
    private SparePartsMapper sparePartsMapper;
    @Autowired
    private SparePartsRequisitionRecordService sparePartsRequisitionRecordService;
    @Autowired
    private IDeviceLedgerService deviceLedgerService;

    @Override
    public IPage<DeviceMaintenanceDto> queryPage(Page page, DeviceMaintenanceDto deviceMaintenanceDto) {
        return deviceMaintenanceMapper.queryPage(page, deviceMaintenanceDto);
    }

    @Override
    public AjaxResult saveDeviceRepair(DeviceMaintenance deviceMaintenance) {
        List<DeviceMaintenance> records = buildMaintenanceRecords(deviceMaintenance);
        if (records.isEmpty()) {
            return AjaxResult.error("请选择设备");
        }
        return this.saveBatch(records) ? AjaxResult.success() : AjaxResult.error();
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public AjaxResult updateDeviceDeviceMaintenance(DeviceMaintenance deviceMaintenance) {
        DeviceMaintenance oldDeviceMaintenance = this.getById(deviceMaintenance.getId());
        if (oldDeviceMaintenance == null) {
            return AjaxResult.error("保养记录不存在");
        }
        if (com.github.xiaoymin.knife4j.core.util.CollectionUtils.isNotEmpty(deviceMaintenance.getSparePartsUseList())) {
            List<Long> sparePartIds = new ArrayList<>();
            for (DeviceMaintenance.SparePartUse sparePartUse : deviceMaintenance.getSparePartsUseList()) {
                SpareParts spareParts = sparePartsMapper.selectById(sparePartUse.getId());
                if (spareParts != null) {
                    if (spareParts.getQuantity().compareTo(new BigDecimal(sparePartUse.getQuantity())) >= 0) {
                        spareParts.setQuantity(spareParts.getQuantity().subtract(new BigDecimal(sparePartUse.getQuantity())));
                        sparePartsMapper.updateById(spareParts);
                        sparePartIds.add(sparePartUse.getId());

                        SparePartsRequisitionRecord record = new SparePartsRequisitionRecord();
                        record.setSourceType(1);
                        record.setSourceId(deviceMaintenance.getId());
                        record.setDeviceLedgerId(oldDeviceMaintenance.getDeviceLedgerId());
                        record.setSparePartsId(sparePartUse.getId());
                        record.setQuantity(sparePartUse.getQuantity());
                        sparePartsRequisitionRecordService.save(record);
                    } else {
                        return AjaxResult.error("备件 " + spareParts.getName() + " 数量不足");
                    }
                }
            }
            if (!sparePartIds.isEmpty()) {
                deviceMaintenance.setSparePartsIds(StringUtils.join(sparePartIds, ","));
            }
        }

        return this.updateById(deviceMaintenance) ? AjaxResult.success() : AjaxResult.error();
    }

    @Override
    public void export(HttpServletResponse response, Long[] ids) {
        List<DeviceMaintenance> supplierManageList = deviceMaintenanceMapper.selectList(null);
        ArrayList<DeviceMaintenanceExeclDto> result = new ArrayList<>();
        supplierManageList.forEach(deviceMaintenance -> {
            DeviceMaintenanceExeclDto dto = new DeviceMaintenanceExeclDto();
            BeanUtils.copyProperties(deviceMaintenance, dto);
            dto.setStatus(deviceMaintenance.getStatus() == 0 ? "待维修" : deviceMaintenance.getStatus() == 1 ? "完结" : "失败");
            result.add(dto);
        });
        ExcelUtil<DeviceMaintenanceExeclDto> util = new ExcelUtil<>(DeviceMaintenanceExeclDto.class);
        util.exportExcel(response, result, "设备保养导出");
    }

    @Override
    public DeviceMaintenanceDto detailById(Long id) {
        return deviceMaintenanceMapper.detailById(id);
    }

    private List<DeviceMaintenance> buildMaintenanceRecords(DeviceMaintenance source) {
        Long[] deviceIds = source.getDeviceLedgerIds();
        if (deviceIds == null || deviceIds.length == 0) {
            deviceIds = source.getDeviceLedgerId() == null ? new Long[0] : new Long[]{source.getDeviceLedgerId()};
        }
        List<DeviceMaintenance> records = new ArrayList<>();
        Arrays.stream(deviceIds).distinct().forEach(deviceId -> {
            DeviceLedger deviceLedger = deviceLedgerService.getById(deviceId);
            if (deviceLedger == null) {
                return;
            }
            int quantity = resolveQuantity(deviceLedger);
            for (int i = 0; i < quantity; i++) {
                DeviceMaintenance record = new DeviceMaintenance();
                BeanUtils.copyProperties(source, record);
                record.setId(null);
                record.setDeviceLedgerIds(null);
                record.setDeviceLedgerId(deviceLedger.getId());
                record.setAreaId(deviceLedger.getAreaId());
                record.setDeviceName(deviceLedger.getDeviceName());
                record.setDeviceModel(deviceLedger.getDeviceModel());
                records.add(record);
            }
        });
        return records;
    }

    private int resolveQuantity(DeviceLedger deviceLedger) {
        if (deviceLedger == null || deviceLedger.getNumber() == null || deviceLedger.getNumber().compareTo(BigDecimal.ONE) < 0) {
            return 1;
        }
        return Math.max(1, deviceLedger.getNumber().intValue());
    }
}