package com.ruoyi.business.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.entity.StorageAttachment;
import com.ruoyi.basic.entity.StorageBlob;
import com.ruoyi.basic.entity.Supply;
import com.ruoyi.basic.entity.dto.StorageBlobDTO;
import com.ruoyi.basic.mapper.StorageAttachmentMapper;
import com.ruoyi.basic.mapper.StorageBlobMapper;
import com.ruoyi.basic.service.StorageAttachmentService;
import com.ruoyi.business.dto.InspectionTaskDto;
import com.ruoyi.business.entity.InspectionTask;
import com.ruoyi.business.mapper.InspectionTaskMapper;
import com.ruoyi.business.service.InspectionTaskService;
import com.ruoyi.common.core.domain.entity.SysUser;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.bean.BeanUtils;
import com.ruoyi.common.utils.file.MinioUtils;
import com.ruoyi.system.mapper.SysUserMapper;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;

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;

/**
 * <p>
 * 巡检任务表 服务实现类
 * </p>
 *
 * @author ld
 * @since 2025-06-14
 */
@Service
@RequiredArgsConstructor
public class InspectionTaskServiceImpl extends ServiceImpl<InspectionTaskMapper, InspectionTask> implements InspectionTaskService {

    private final InspectionTaskMapper inspectionTaskMapper;

    private final StorageAttachmentService storageAttachmentService;

    private final StorageBlobMapper storageBlobMapper;

    private final StorageAttachmentMapper storageAttachmentMapper;

    private final MinioUtils minioUtils;

    private final SysUserMapper sysUserMapper;

    @Override
    public IPage<InspectionTaskDto> selectInspectionTaskList(Page<InspectionTask> page, InspectionTaskDto inspectionTaskDto) {
        LambdaQueryWrapper<InspectionTask> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.orderByDesc(InspectionTask::getCreateTime);
        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).toList();
        //登记人ids
        List<Long> registrantIds = entityPage.getRecords().stream().map(InspectionTask::getRegistrantId).toList();
        // 批量查询登记人
        Map<Long, SysUser> sysUserMap;
        if (!registrantIds.isEmpty()) {
            List<SysUser> sysUsers = sysUserMapper.selectList(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).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
        Map<Long, List<StorageAttachment>> attachmentsMap = storageAttachmentMapper.selectList(new LambdaQueryWrapper<StorageAttachment>().in(StorageAttachment::getRecordId, ids)
                        .eq(StorageAttachment::getRecordType, InspectionTasks.ordinal()))
                .stream()
                .collect(Collectors.groupingBy(StorageAttachment::getRecordId));
        //  批量查询所有需要的文件数据
        Set<Long> blobIds = attachmentsMap.values()
                .stream()
                .flatMap(List::stream)
                .map(StorageAttachment::getStorageBlobId)
                .collect(Collectors.toSet());
        Map<Long, StorageBlob> blobMap = blobIds.isEmpty()
                ? Collections.emptyMap()
                : storageBlobMapper.selectList(new LambdaQueryWrapper<StorageBlob>().in(StorageBlob::getId, blobIds))
                .stream()
                .collect(Collectors.toMap(StorageBlob::getId, Function.identity()));

        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);
            }

            // 初始化三个附件列表
            dto.setBeforeProduction(new ArrayList<>());
            dto.setAfterProduction(new ArrayList<>());
            dto.setProductionIssues(new ArrayList<>());

            // 处理附件分类
            Optional.ofNullable(attachmentsMap.get(inspectionTask.getId()))
                    .orElse(Collections.emptyList())
                    .forEach(attachment -> {
                        StorageBlob blob = blobMap.get(attachment.getStorageBlobId());
                        if (blob != null) {
                            // 创建附件DTO
                            StorageBlobDTO blobDto = createBlobDto(blob);

                            // 根据type分类
                            switch ((int) blob.getType().longValue()) {
                                case 0:
                                    dto.getBeforeProduction().add(blobDto);
                                    break;
                                case 1:
                                    dto.getAfterProduction().add(blobDto);
                                    break;
                                case 2:
                                    dto.getProductionIssues().add(blobDto);
                                    break;
                                default:
                                    // 可选：记录未分类类型
                                    break;
                            }
                        }
                    });

            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;
    }

    @Override
    public int addOrEditInspectionTask(InspectionTaskDto inspectionTaskDto) {
        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);
        }

        if (inspectionTaskDto.getStorageBlobDTO() != null && !inspectionTaskDto.getStorageBlobDTO().isEmpty()) {
            List<StorageAttachment> attachments = new ArrayList<>();

            for (StorageBlobDTO storageBlobDTO : inspectionTaskDto.getStorageBlobDTO()) {
                StorageAttachment storageAttachment = new StorageAttachment(
                        StorageAttachmentFile,
                        (long) InspectionTasks.ordinal(),
                        inspectionTask.getId()
                );
                storageAttachment.setStorageBlobDTO(storageBlobDTO);
                attachments.add(storageAttachment);
            }
            storageAttachmentService.saveStorageAttachment(attachments, inspectionTask.getId(), InspectionTasks, StorageAttachmentFile);
        }
        return i;
    }

    @Override
    public int delByIds(Long[] ids) {
        // 检查参数
        if (ids == null || ids.length == 0) {
            return 0;
        }
        return inspectionTaskMapper.deleteByIds(Arrays.asList(ids));
    }
}