package cn.iocoder.yudao.module.research.controller.admin.guideline;

import cn.hutool.core.collection.CollUtil;
import cn.iocoder.yudao.framework.common.pojo.CommonResult;
import cn.iocoder.yudao.framework.common.pojo.PageResult;
import cn.iocoder.yudao.framework.common.util.number.NumberUtils;
import cn.iocoder.yudao.framework.common.util.object.BeanUtils;
import cn.iocoder.yudao.module.research.controller.admin.guideline.vo.ResearchGuidelinePageReqVO;
import cn.iocoder.yudao.module.research.controller.admin.guideline.vo.ResearchGuidelineRespVO;
import cn.iocoder.yudao.module.research.controller.admin.guideline.vo.ResearchGuidelineSaveReqVO;
import cn.iocoder.yudao.module.research.dal.dataobject.guideline.ResearchGuidelineDO;
import cn.iocoder.yudao.module.research.service.guideline.ResearchGuidelineService;
import cn.iocoder.yudao.module.research.service.guideline.ResearchGuidelineServiceImpl;
import cn.iocoder.yudao.module.system.api.storage.StorageAttachmentApi;
import cn.iocoder.yudao.module.system.api.storage.dto.StorageBlobRespDTO;
import cn.iocoder.yudao.module.system.api.user.AdminUserApi;
import cn.iocoder.yudao.module.system.api.user.dto.AdminUserRespDTO;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.annotation.Resource;
import jakarta.validation.Valid;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
import static cn.iocoder.yudao.framework.common.util.collection.MapUtils.findAndThen;

@Tag(name = "管理后台 - 课题指南")
@RestController
@RequestMapping("/research/guideline")
@Validated
public class ResearchGuidelineController {

    public static final String GUIDELINE_RECORD_TYPE =
            ResearchGuidelineServiceImpl.GUIDELINE_RECORD_TYPE;

    @Resource
    private ResearchGuidelineService guidelineService;

    @Resource
    private AdminUserApi adminUserApi;

    @Resource
    private StorageAttachmentApi storageAttachmentApi;

    @PostMapping("/create")
    @Operation(summary = "创建课题指南")
    @PreAuthorize("@ss.hasPermission('research:guideline:create')")
    public CommonResult<Long> createGuideline(@Valid @RequestBody ResearchGuidelineSaveReqVO createReqVO) {
        return success(guidelineService.createGuideline(createReqVO));
    }

    @PutMapping("/update")
    @Operation(summary = "更新课题指南")
    @PreAuthorize("@ss.hasPermission('research:guideline:update')")
    public CommonResult<Boolean> updateGuideline(@Valid @RequestBody ResearchGuidelineSaveReqVO updateReqVO) {
        guidelineService.updateGuideline(updateReqVO);
        return success(true);
    }

    @DeleteMapping("/delete")
    @Operation(summary = "删除课题指南")
    @Parameter(name = "id", description = "编号", required = true)
    @PreAuthorize("@ss.hasPermission('research:guideline:delete')")
    public CommonResult<Boolean> deleteGuideline(@RequestParam("id") Long id) {
        guidelineService.deleteGuideline(id);
        return success(true);
    }

    @GetMapping("/get")
    @Operation(summary = "获得课题指南")
    @Parameter(name = "id", description = "编号", required = true, example = "1024")
    @PreAuthorize("@ss.hasPermission('research:guideline:query')")
    public CommonResult<ResearchGuidelineRespVO> getGuideline(@RequestParam("id") Long id) {
        return success(buildGuidelineDetail(guidelineService.getGuideline(id)));
    }

    @GetMapping("/page")
    @Operation(summary = "获得课题指南分页")
    @PreAuthorize("@ss.hasPermission('research:guideline:query')")
    public CommonResult<PageResult<ResearchGuidelineRespVO>> getGuidelinePage(
            @Valid ResearchGuidelinePageReqVO pageReqVO) {
        PageResult<ResearchGuidelineDO> pageResult = guidelineService.getGuidelinePage(pageReqVO);
        return success(new PageResult<>(buildGuidelineDetailList(pageResult.getList()), pageResult.getTotal()));
    }

    @GetMapping("/published-list")
    @Operation(summary = "获得已发布的课题指南列表（供申报选指南）")
    @PreAuthorize("@ss.hasPermission('research:guideline:query')")
    public CommonResult<List<ResearchGuidelineRespVO>> getPublishedGuidelineList() {
        return success(buildGuidelineDetailList(guidelineService.getPublishedGuidelineList()));
    }

    @PutMapping("/publish")
    @Operation(summary = "发布课题指南")
    @Parameter(name = "id", description = "编号", required = true)
    @PreAuthorize("@ss.hasPermission('research:guideline:publish')")
    public CommonResult<Boolean> publishGuideline(@RequestParam("id") Long id) {
        guidelineService.publishGuideline(id);
        return success(true);
    }

    @PutMapping("/close")
    @Operation(summary = "截止课题指南")
    @Parameter(name = "id", description = "编号", required = true)
    @PreAuthorize("@ss.hasPermission('research:guideline:publish')")
    public CommonResult<Boolean> closeGuideline(@RequestParam("id") Long id) {
        guidelineService.closeGuideline(id);
        return success(true);
    }

    // ==================== 内部方法 ====================

    private ResearchGuidelineRespVO buildGuidelineDetail(ResearchGuidelineDO guideline) {
        if (guideline == null) {
            return null;
        }
        return buildGuidelineDetailList(Collections.singletonList(guideline)).get(0);
    }

    private List<ResearchGuidelineRespVO> buildGuidelineDetailList(List<ResearchGuidelineDO> list) {
        if (CollUtil.isEmpty(list)) {
            return Collections.emptyList();
        }

        // 1.1 获取创建人
        Set<Long> creatorIds = convertSet(list, guideline -> NumberUtils.parseLong(guideline.getCreator()));
        Map<Long, AdminUserRespDTO> creatorMap = adminUserApi.getUserMap(creatorIds);
        // 1.2 获取附件
        Map<Long, List<StorageBlobRespDTO>> attachmentMap = list.stream()
                .collect(Collectors.toMap(ResearchGuidelineDO::getId,
                        r -> storageAttachmentApi.listAttachments(GUIDELINE_RECORD_TYPE, r.getId())));

        // 2. 拼接结果
        return BeanUtils.toBean(list, ResearchGuidelineRespVO.class, (vo) -> {
            findAndThen(creatorMap, NumberUtils.parseLong(vo.getCreator()),
                    user -> vo.setCreatorName(user.getNickname()));
            List<StorageBlobRespDTO> attachments = attachmentMap.getOrDefault(vo.getId(), Collections.emptyList());
            vo.setAttachmentList(attachments);
            vo.setHasAttachment(CollUtil.isNotEmpty(attachments));
        });
    }

}