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package com.ruoyi.inspectiontask.service.impl;
 
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.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.basic.dto.StorageBlobDTO;
import com.ruoyi.basic.mapper.StorageAttachmentMapper;
import com.ruoyi.basic.mapper.StorageBlobMapper;
import com.ruoyi.basic.pojo.StorageAttachment;
import com.ruoyi.basic.pojo.StorageBlob;
import com.ruoyi.basic.service.StorageAttachmentService;
import com.ruoyi.common.enums.FileNameType;
import com.ruoyi.common.utils.MinioUtils;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.bean.BeanUtils;
import com.ruoyi.inspectiontask.dto.InspectionTaskDto;
import com.ruoyi.inspectiontask.mapper.InspectionTaskMapper;
import com.ruoyi.inspectiontask.mapper.TimingTaskMapper;
import com.ruoyi.inspectiontask.pojo.InspectionTask;
import com.ruoyi.inspectiontask.pojo.TimingTask;
import com.ruoyi.inspectiontask.service.InspectionTaskService;
import com.ruoyi.project.system.domain.SysUser;
import com.ruoyi.project.system.mapper.SysUserMapper;
import com.ruoyi.sales.mapper.CommonFileMapper;
import com.ruoyi.sales.pojo.CommonFile;
import com.ruoyi.sales.service.impl.CommonFileServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
 
import java.io.IOException;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.*;
import java.util.function.Function;
import java.util.stream.Collectors;
 
import static com.ruoyi.common.constant.StorageAttachmentConstants.StorageAttachmentFile;
import static com.ruoyi.common.enums.StorageAttachmentRecordType.InspectionTasks;
 
/**
 * @author :yys
 * @date : 2025/9/19 10:54
 */
@Service
@Slf4j
public class InspectionTaskServiceImpl extends ServiceImpl<InspectionTaskMapper, InspectionTask> implements InspectionTaskService {
 
 
    @Autowired
    private InspectionTaskMapper inspectionTaskMapper;
 
    @Autowired
    private StorageAttachmentService storageAttachmentService;
 
    @Autowired
    private StorageBlobMapper storageBlobMapper;
 
    @Autowired
    private StorageAttachmentMapper storageAttachmentMapper;
 
    @Autowired
    private MinioUtils minioUtils;
 
    @Autowired
    private SysUserMapper sysUserMapper;
 
    @Autowired
    private CommonFileMapper commonFileMapper;
 
    @Autowired
    private CommonFileServiceImpl commonFileService;
 
    @Autowired
    private TimingTaskMapper timingTaskMapper;
 
    @Override
    public IPage<InspectionTaskDto> selectInspectionTaskList(Page<InspectionTask> page, InspectionTaskDto inspectionTaskDto) {
        LambdaQueryWrapper<InspectionTask> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.orderByDesc(InspectionTask::getCreateTime);
        if (StringUtils.isNotBlank(inspectionTaskDto.getTaskName())) {
            queryWrapper.like(InspectionTask::getTaskName, inspectionTaskDto.getTaskName());
        }
        IPage<InspectionTask> entityPage = inspectionTaskMapper.selectPage(page, queryWrapper);
 
        //  无数据提前返回
        if (CollectionUtils.isEmpty(entityPage.getRecords())) {
            return new Page<>(entityPage.getCurrent(), entityPage.getSize(), entityPage.getTotal());
        }
        // 获取id集合
        List<Long> ids = entityPage.getRecords().stream().map(InspectionTask::getId).collect(Collectors.toList());
        //登记人ids
        List<Long> registrantIds = entityPage.getRecords().stream().map(InspectionTask::getRegistrantId).collect(Collectors.toList());
        // 批量查询登记人
        Map<Long, SysUser> sysUserMap;
        if (!registrantIds.isEmpty()) {
            List<SysUser> sysUsers = sysUserMapper.selectUsersByIds(registrantIds);
            sysUserMap = sysUsers.stream().collect(Collectors.toMap(SysUser::getUserId, Function.identity()));
        } else {
            sysUserMap = new HashMap<>();
        }
        //巡检人ids
        List<String> inspectorIds = entityPage.getRecords().stream().map(InspectionTask::getInspectorId).collect(Collectors.toList());
 
        //获取所有不重复的用户ID
        Set<Long> allUserIds = entityPage.getRecords().stream()
                .map(InspectionTask::getInspectorId) // 获取"2,3"这样的字符串
                .filter(StringUtils::isNotBlank)
                .flatMap(idsStr -> Arrays.stream(idsStr.split(",")))
                .map(idStr -> {
                    try {
                        return Long.parseLong(idStr.trim());
                    } catch (NumberFormatException e) {
                        return null;
                    }
                })
                .filter(Objects::nonNull)
                .collect(Collectors.toSet());
 
        // 使用SQL批量查询用户信息
        Map<Long, String> userIdToNameMap = allUserIds.isEmpty()
                ? Collections.emptyMap()
                : sysUserMapper.selectUsersByIds(new ArrayList<>(allUserIds))
                .stream()
                .collect(Collectors.toMap(
                        SysUser::getUserId,
                        SysUser::getNickName,
                        (existing, replacement) -> existing));
 
        //处理附件
        List<CommonFile> commonFiles = commonFileMapper.selectList(new LambdaQueryWrapper<CommonFile>()
                .in(CommonFile::getCommonId, ids)
                .in(CommonFile::getType, Arrays.asList(FileNameType.INSPECTION.getValue(), FileNameType.INSPECTION_PRODUCTION_BEFORE.getValue(), FileNameType.INSPECTION_PRODUCTION_AFTER.getValue())));
        if(commonFiles == null){
            commonFiles = new ArrayList<>();
        }
        List<CommonFile> finalCommonFiles = commonFiles;
 
        // 批量查询定时任务获取nextExecutionTime
        List<Long> timingTaskIds = entityPage.getRecords().stream()
                .map(InspectionTask::getTimingTaskId)
                .filter(Objects::nonNull)
                .collect(Collectors.toList());
        Map<Long, TimingTask> timingTaskMap = new HashMap<>();
        if (!timingTaskIds.isEmpty()) {
            List<TimingTask> timingTasks = timingTaskMapper.selectBatchIds(timingTaskIds);
            timingTaskMap = timingTasks.stream()
                    .collect(Collectors.toMap(TimingTask::getId, Function.identity()));
        }
        final Map<Long, TimingTask> finalTimingTaskMap = timingTaskMap;
        final LocalDateTime now = LocalDateTime.now();
 
        List<InspectionTaskDto> dtoList = entityPage.getRecords().stream().map(inspectionTask -> {
            InspectionTaskDto dto = new InspectionTaskDto();
            BeanUtils.copyProperties(inspectionTask, dto);  // 复制主对象属性
 
            // 设置登记人
            SysUser sysUser = sysUserMap.get(inspectionTask.getRegistrantId());
            if (sysUser != null) {
                dto.setRegistrant(sysUser.getNickName());
            }
            // 处理巡检人名称
            if (StringUtils.isNotBlank(inspectionTask.getInspectorId())) {
                String inspectorNames = Arrays.stream(inspectionTask.getInspectorId().split(","))
                        .map(String::trim)
                        .map(idStr -> {
                            try {
                                Long userId = Long.parseLong(idStr);
                                return userIdToNameMap.getOrDefault(userId, "未知用户(" + idStr + ")");
                            } catch (NumberFormatException e) {
                                return "无效ID(" + idStr + ")";
                            }
                        })
                        .collect(Collectors.joining(","));
                dto.setInspector(inspectorNames);
            }
 
            dto.setDateStr(inspectionTask.getCreateTime().format(DateTimeFormatter.ofPattern("yyyy-MM-dd")));
 
            // 初始化三个附件列表,按commonId和type过滤
            Long taskId = inspectionTask.getId();
            dto.setCommonFileList(finalCommonFiles.stream()
                    .filter(commonFile -> commonFile.getCommonId().equals(taskId) && commonFile.getType().equals(FileNameType.INSPECTION.getValue()))
                    .collect(Collectors.toList()));
            dto.setCommonFileListAfter(finalCommonFiles.stream()
                    .filter(commonFile -> commonFile.getCommonId().equals(taskId) && commonFile.getType().equals(FileNameType.INSPECTION_PRODUCTION_AFTER.getValue()))
                    .collect(Collectors.toList()));
            dto.setCommonFileListBefore(finalCommonFiles.stream()
                    .filter(commonFile -> commonFile.getCommonId().equals(taskId) && commonFile.getType().equals(FileNameType.INSPECTION_PRODUCTION_BEFORE.getValue()))
                    .collect(Collectors.toList()));
 
            // 计算状态:已过期 > 巡检中 > 待巡检
            String status = calculateStatus(inspectionTask, finalTimingTaskMap, now);
            dto.setStatus(status);
 
            // 设置nextExecutionTime用于前端展示
            if (inspectionTask.getTimingTaskId() != null) {
                TimingTask timingTask = finalTimingTaskMap.get(inspectionTask.getTimingTaskId());
                if (timingTask != null) {
                    dto.setNextExecutionTime(timingTask.getNextExecutionTime());
                }
            }
 
            return dto;
        }).collect(Collectors.toList());
 
        // 7. 构建返回分页对象
        IPage<InspectionTaskDto> resultPage = new Page<>();
        BeanUtils.copyProperties(entityPage, resultPage);
        resultPage.setRecords(dtoList);
        return resultPage;
    }
 
    // 提取创建BlobDTO的公共方法
    private StorageBlobDTO createBlobDto(StorageBlob blob) {
        StorageBlobDTO dto = new StorageBlobDTO();
        BeanUtils.copyProperties(blob, dto);
 
        // 设置URL
        dto.setUrl(minioUtils.getPreviewUrls(
                blob.getBucketFilename(),
                blob.getBucketName(),
                true
        ));
 
        // 设置下载URL
        dto.setDownloadUrl(minioUtils.getDownloadUrls(
                blob.getBucketFilename(),
                blob.getBucketName(),
                blob.getOriginalFilename(),
                true
        ));
        return dto;
    }
 
    /**
     * 计算巡检任务状态
     * 优先级:已过期 > 巡检中 > 待巡检
     * @param inspectionTask 巡检任务
     * @param timingTaskMap 定时任务Map
     * @param now 当前时间
     * @return 状态:EXPIRED-已过期,IN_PROGRESS-巡检中,PENDING-待巡检
     */
    private String calculateStatus(InspectionTask inspectionTask, Map<Long, TimingTask> timingTaskMap, LocalDateTime now) {
        // 1. 判断是否已过期
        if (inspectionTask.getTimingTaskId() != null) {
            TimingTask timingTask = timingTaskMap.get(inspectionTask.getTimingTaskId());
            if (timingTask != null && timingTask.getNextExecutionTime() != null) {
                if (now.isAfter(timingTask.getNextExecutionTime())) {
                    return "EXPIRED";
                }
            }
        }else {
            return "EXPIRED";
        }
 
        // 2. 判断是否巡检中(任一异常字段不为null)
        if (inspectionTask.getHasExceptionBefore() != null
                || inspectionTask.getHasExceptionAfter() != null
                || inspectionTask.getHasExceptionIssue() != null) {
            return "IN_PROGRESS";
        }
 
        // 3. 待巡检
        return "PENDING";
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public int addOrEditInspectionTask(InspectionTaskDto inspectionTaskDto) throws IOException {
        InspectionTask inspectionTask = new InspectionTask();
        BeanUtils.copyProperties(inspectionTaskDto, inspectionTask);
        inspectionTask.setRegistrantId(SecurityUtils.getLoginUser().getUserId());
        inspectionTask.setRegistrant(SecurityUtils.getLoginUser().getUsername());
        int i;
        if (Objects.isNull(inspectionTaskDto.getId())) {
            i = inspectionTaskMapper.insert(inspectionTask);
        } else {
            i = inspectionTaskMapper.updateById(inspectionTask);
            // 编辑时处理附件删除逻辑
            handleFileDeletion(inspectionTask.getId(), inspectionTaskDto);
        }
 
        commonFileService.migrateTempFilesToFormal(inspectionTask.getId(),inspectionTaskDto.getTempFileIds());
        return i;
    }
 
    /**
     * 处理附件删除逻辑:对比原有附件和传入的附件,删除被移除的附件
     */
    private void handleFileDeletion(Long taskId, InspectionTaskDto inspectionTaskDto) {
        // 查询原有的三种类型附件
        List<CommonFile> existingFiles = commonFileMapper.selectList(new LambdaQueryWrapper<CommonFile>()
                .eq(CommonFile::getCommonId, taskId)
                .in(CommonFile::getType, Arrays.asList(
                        FileNameType.INSPECTION.getValue(),
                        FileNameType.INSPECTION_PRODUCTION_BEFORE.getValue(),
                        FileNameType.INSPECTION_PRODUCTION_AFTER.getValue())));
 
        if (CollectionUtils.isEmpty(existingFiles)) {
            return;
        }
 
        // 获取前端传入的附件ID集合
        Set<Long> submittedFileIds = new HashSet<>();
        if (inspectionTaskDto.getCommonFileList() != null) {
            inspectionTaskDto.getCommonFileList().stream()
                    .map(CommonFile::getId)
                    .filter(Objects::nonNull)
                    .forEach(submittedFileIds::add);
        }
        if (inspectionTaskDto.getCommonFileListBefore() != null) {
            inspectionTaskDto.getCommonFileListBefore().stream()
                    .map(CommonFile::getId)
                    .filter(Objects::nonNull)
                    .forEach(submittedFileIds::add);
        }
        if (inspectionTaskDto.getCommonFileListAfter() != null) {
            inspectionTaskDto.getCommonFileListAfter().stream()
                    .map(CommonFile::getId)
                    .filter(Objects::nonNull)
                    .forEach(submittedFileIds::add);
        }
 
        // 找出需要删除的附件ID(原有但前端没传的)
        List<Long> toDeleteIds = existingFiles.stream()
                .map(CommonFile::getId)
                .filter(id -> !submittedFileIds.contains(id))
                .collect(Collectors.toList());
 
        // 删除附件
        if (!toDeleteIds.isEmpty()) {
            commonFileService.delCommonFileByIds(toDeleteIds.toArray(new Long[0]));
        }
    }
 
    @Override
    @Transactional(rollbackFor = Exception.class)
    public int delByIds(Long[] ids) {
        // 检查参数
        if (ids == null || ids.length == 0) {
            return 0;
        }
        commonFileService.deleteByBusinessIds(Arrays.asList(ids),FileNameType.INSPECTION.getValue());
        commonFileService.deleteByBusinessIds(Arrays.asList(ids),FileNameType.INSPECTION_PRODUCTION_BEFORE.getValue());
        commonFileService.deleteByBusinessIds(Arrays.asList(ids),FileNameType.INSPECTION_PRODUCTION_AFTER.getValue());
        return inspectionTaskMapper.deleteBatchIds(Arrays.asList(ids));
    }
 
}