package cn.iocoder.yudao.module.finance.controller.admin.reimbursement;

import cn.hutool.core.collection.CollUtil;
import cn.iocoder.yudao.framework.apilog.core.annotation.ApiAccessLog;
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.framework.excel.core.util.ExcelUtils;
import cn.iocoder.yudao.module.finance.controller.admin.reimbursement.vo.FinanceReimbursementPageReqVO;
import cn.iocoder.yudao.module.finance.controller.admin.reimbursement.vo.FinanceReimbursementRespVO;
import cn.iocoder.yudao.module.finance.controller.admin.reimbursement.vo.FinanceReimbursementSaveReqVO;
import cn.iocoder.yudao.module.finance.dal.dataobject.reimbursement.FinanceReimbursementDO;
import cn.iocoder.yudao.module.finance.dal.dataobject.reimbursement.FinanceReimbursementItemDO;
import cn.iocoder.yudao.module.finance.service.reimbursement.FinanceReimbursementService;
import cn.iocoder.yudao.module.finance.service.reimbursement.FinanceReimbursementServiceImpl;
import cn.iocoder.yudao.module.system.api.storage.StorageAttachmentApi;
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.servlet.http.HttpServletResponse;
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.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import static cn.iocoder.yudao.framework.apilog.core.enums.OperateTypeEnum.EXPORT;
import static cn.iocoder.yudao.framework.common.pojo.CommonResult.success;
import static cn.iocoder.yudao.framework.common.pojo.PageParam.PAGE_SIZE_NONE;
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 - 财务报销单")
@RestController
@RequestMapping("/finance/reimbursement")
@Validated
public class FinanceReimbursementController {

    public static final String REIMBURSEMENT_RECORD_TYPE =
            FinanceReimbursementServiceImpl.REIMBURSEMENT_RECORD_TYPE;

    @Resource
    private FinanceReimbursementService reimbursementService;

    @Resource
    private AdminUserApi adminUserApi;

    @Resource
    private StorageAttachmentApi storageAttachmentApi;

    @PostMapping("/create")
    @Operation(summary = "创建报销单")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:create')")
    public CommonResult<Long> createReimbursement(@Valid @RequestBody FinanceReimbursementSaveReqVO createReqVO) {
        return success(reimbursementService.createReimbursement(createReqVO));
    }

    @PutMapping("/update")
    @Operation(summary = "更新报销单")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:update')")
    public CommonResult<Boolean> updateReimbursement(@Valid @RequestBody FinanceReimbursementSaveReqVO updateReqVO) {
        reimbursementService.updateReimbursement(updateReqVO);
        return success(true);
    }

    @DeleteMapping("/delete")
    @Operation(summary = "删除报销单")
    @Parameter(name = "id", description = "编号", required = true)
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:delete')")
    public CommonResult<Boolean> deleteReimbursement(@RequestParam("id") Long id) {
        reimbursementService.deleteReimbursement(id);
        return success(true);
    }

    @GetMapping("/get")
    @Operation(summary = "获得报销单")
    @Parameter(name = "id", description = "编号", required = true, example = "1024")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:query')")
    public CommonResult<FinanceReimbursementRespVO> getReimbursement(@RequestParam("id") Long id) {
        FinanceReimbursementDO reimbursement = reimbursementService.getReimbursement(id);
        return success(buildReimbursementDetail(reimbursement));
    }

    @GetMapping("/page")
    @Operation(summary = "获得报销单分页")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:query')")
    public CommonResult<PageResult<FinanceReimbursementRespVO>> getReimbursementPage(
            @Valid FinanceReimbursementPageReqVO pageReqVO) {
        PageResult<FinanceReimbursementDO> pageResult = reimbursementService.getReimbursementPage(pageReqVO);
        return success(new PageResult<>(buildReimbursementDetailList(pageResult.getList()), pageResult.getTotal()));
    }

    @GetMapping("/export-excel")
    @Operation(summary = "导出报销单 Excel")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:export')")
    @ApiAccessLog(operateType = EXPORT)
    public void exportReimbursementExcel(@Valid FinanceReimbursementPageReqVO pageReqVO,
                                          HttpServletResponse response) throws IOException {
        pageReqVO.setPageSize(PAGE_SIZE_NONE);
        List<FinanceReimbursementDO> list = reimbursementService.getReimbursementPage(pageReqVO).getList();
        ExcelUtils.write(response, "报销单.xls", "数据", FinanceReimbursementRespVO.class,
                buildReimbursementDetailList(list));
    }

    @PostMapping("/submit")
    @Operation(summary = "提交报销单审批")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:update-status')")
    public CommonResult<Boolean> submitReimbursement(@RequestParam("id") Long id,
                                                      @RequestParam("processDefinitionKey") String processDefinitionKey) {
        reimbursementService.submitReimbursement(id, processDefinitionKey, getLoginUserId());
        return success(true);
    }

    @PostMapping("/archive")
    @Operation(summary = "归档报销单（同时生成财务档案）")
    @Parameter(name = "id", description = "编号", required = true)
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:archive')")
    public CommonResult<String> archiveReimbursement(@RequestParam("id") Long id) {
        return success(reimbursementService.archiveReimbursement(id));
    }

    @GetMapping("/approve-process-list")
    @Operation(summary = "获取报销单审批流程列表")
    @PreAuthorize("@ss.hasPermission('finance:reimbursement:query')")
    public CommonResult<List<Map<String, Object>>> getReimbursementApproveProcessDefinitionList() {
        return success(reimbursementService.getReimbursementApproveProcessDefinitionList());
    }

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

    private FinanceReimbursementRespVO buildReimbursementDetail(FinanceReimbursementDO reimbursement) {
        if (reimbursement == null) {
            return null;
        }
        return buildReimbursementDetailList(Collections.singletonList(reimbursement)).get(0);
    }

    private List<FinanceReimbursementRespVO> buildReimbursementDetailList(List<FinanceReimbursementDO> list) {
        if (CollUtil.isEmpty(list)) {
            return Collections.emptyList();
        }

        // 1.1 获取申请人
        Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(
                convertSet(list, FinanceReimbursementDO::getApplicantId));
        // 1.2 获取创建人
        Map<Long, AdminUserRespDTO> creatorMap = adminUserApi.getUserMap(
                convertSet(list, invoice -> NumberUtils.parseLong(invoice.getCreator())));
        // 1.3 获取明细
        Map<Long, List<FinanceReimbursementItemDO>> itemMap = list.stream()
                .collect(Collectors.toMap(
                        FinanceReimbursementDO::getId,
                        r -> reimbursementService.getReimbursementItemListByReimbursementId(r.getId())));
        // 1.4 获取附件
        Map<Long, List<cn.iocoder.yudao.module.system.api.storage.dto.StorageBlobRespDTO>> attachmentMap = list.stream()
                .collect(Collectors.toMap(
                        FinanceReimbursementDO::getId,
                        r -> storageAttachmentApi.listAttachments(REIMBURSEMENT_RECORD_TYPE, r.getId())));

        // 2. 拼接结果
        return BeanUtils.toBean(list, FinanceReimbursementRespVO.class, (vo) -> {
            // 2.1 申请人姓名
            findAndThen(userMap, vo.getApplicantId(), user -> vo.setApplicantName(user.getNickname()));
            // 2.2 创建人名称
            findAndThen(creatorMap, NumberUtils.parseLong(vo.getCreator()),
                    user -> vo.setCreatorName(user.getNickname()));
            // 2.3 明细列表
            vo.setItems(BeanUtils.toBean(itemMap.getOrDefault(vo.getId(), Collections.emptyList()),
                    cn.iocoder.yudao.module.finance.controller.admin.reimbursement.vo.item.FinanceReimbursementItemRespVO.class));
            // 2.4 附件列表
            vo.setAttachmentList(attachmentMap.getOrDefault(vo.getId(), Collections.emptyList()));
            vo.setHasAttachment(CollUtil.isNotEmpty(vo.getAttachmentList()));
        });
    }

    /**
     * 获取当前登录用户ID
     */
    private static Long getLoginUserId() {
        return cn.iocoder.yudao.framework.security.core.util.SecurityFrameworkUtils.getLoginUserId();
    }

}