package com.gxwebsoft.credit.controller;

import com.gxwebsoft.common.core.annotation.OperationLog;
import com.gxwebsoft.common.core.web.ApiResult;
import com.gxwebsoft.common.core.web.BaseController;
import com.gxwebsoft.common.core.web.BatchParam;
import com.gxwebsoft.common.core.web.PageResult;
import com.gxwebsoft.common.system.entity.User;
import com.gxwebsoft.credit.entity.CreditCaseFiling;
import com.gxwebsoft.credit.param.CreditCaseFilingImportParam;
import com.gxwebsoft.credit.param.CreditCaseFilingParam;
import com.gxwebsoft.credit.service.CreditCompanyService;
import com.gxwebsoft.credit.service.CreditCompanyRecordCountService;
import com.gxwebsoft.credit.service.CreditCaseFilingService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.tags.Tag;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * 司法大数据控制器
 *
 * @author 科技小王子
 * @since 2025-12-19 19:47:23
 */
@Tag(name = "司法大数据管理")
@RestController
@RequestMapping("/api/credit/credit-case-filing")
public class CreditCaseFilingController extends BaseController {
    @Resource
    private CreditCaseFilingService creditCaseFilingService;

    @Resource
    private BatchImportSupport batchImportSupport;

    @Resource
    private CreditCompanyService creditCompanyService;

    @Resource
    private CreditCompanyRecordCountService creditCompanyRecordCountService;

    @Operation(summary = "分页查询司法大数据")
    @GetMapping("/page")
    public ApiResult<PageResult<CreditCaseFiling>> page(CreditCaseFilingParam param) {
        // 使用关联查询
        return success(creditCaseFilingService.pageRel(param));
    }

    @Operation(summary = "查询全部司法大数据")
    @GetMapping()
    public ApiResult<List<CreditCaseFiling>> list(CreditCaseFilingParam param) {
        // 使用关联查询
        return success(creditCaseFilingService.listRel(param));
    }

    @Operation(summary = "根据id查询司法大数据")
    @GetMapping("/{id}")
    public ApiResult<CreditCaseFiling> get(@PathVariable("id") Integer id) {
        // 使用关联查询
        return success(creditCaseFilingService.getByIdRel(id));
    }

    @PreAuthorize("hasAuthority('credit:creditCaseFiling:save')")
    @OperationLog
    @Operation(summary = "添加司法大数据")
    @PostMapping()
    public ApiResult<?> save(@RequestBody CreditCaseFiling creditCaseFiling) {
        // 记录当前登录用户id
        // User loginUser = getLoginUser();
        // if (loginUser != null) {
        // creditCaseFiling.setUserId(loginUser.getUserId());
        // }
        if (creditCaseFilingService.save(creditCaseFiling)) {
            return success("添加成功");
        }
        return fail("添加失败");
    }

    @PreAuthorize("hasAuthority('credit:creditCaseFiling:update')")
    @OperationLog
    @Operation(summary = "修改司法大数据")
    @PutMapping()
    public ApiResult<?> update(@RequestBody CreditCaseFiling creditCaseFiling) {
        if (creditCaseFilingService.updateById(creditCaseFiling)) {
            return success("修改成功");
        }
        return fail("修改失败");
    }

    @PreAuthorize("hasAuthority('credit:creditCaseFiling:remove')")
    @OperationLog
    @Operation(summary = "删除司法大数据")
    @DeleteMapping("/{id}")
    public ApiResult<?> remove(@PathVariable("id") Integer id) {
        if (creditCaseFilingService.removeById(id)) {
            return success("删除成功");
        }
        return fail("删除失败");
    }

    @PreAuthorize("hasAuthority('credit:creditCaseFiling:save')")
    @OperationLog
    @Operation(summary = "批量添加司法大数据")
    @PostMapping("/batch")
    public ApiResult<?> saveBatch(@RequestBody List<CreditCaseFiling> list) {
        if (creditCaseFilingService.saveBatch(list)) {
            return success("添加成功");
        }
        return fail("添加失败");
    }

    @PreAuthorize("hasAuthority('credit:creditCaseFiling:update')")
    @OperationLog
    @Operation(summary = "批量修改司法大数据")
    @PutMapping("/batch")
    public ApiResult<?> removeBatch(@RequestBody BatchParam<CreditCaseFiling> batchParam) {
        if (batchParam.update(creditCaseFilingService, "id")) {
            return success("修改成功");
        }
        return fail("修改失败");
    }

    @PreAuthorize("hasAuthority('credit:creditCaseFiling:remove')")
    @OperationLog
    @Operation(summary = "批量删除司法大数据")
    @DeleteMapping("/batch")
    public ApiResult<?> removeBatch(@RequestBody List<Integer> ids) {
        if (creditCaseFilingService.removeByIds(ids)) {
            return success("删除成功");
        }
        return fail("删除失败");
    }

    /**
     * 根据企业名称匹配企业并更新 companyId（匹配 CreditCompany.name / CreditCompany.matchName）
     *
     * <p>默认仅更新 companyId=0 的记录；如需覆盖更新，传 onlyNull=false。</p>
     */
    @PreAuthorize("hasAuthority('credit:creditCaseFiling:update')")
    @OperationLog
    @Operation(summary = "根据企业名称匹配并更新companyId")
    @PostMapping("/company-id/refresh")
    public ApiResult<Map<String, Object>> refreshCompanyIdByCompanyName(
        @RequestParam(value = "onlyNull", required = false, defaultValue = "true") Boolean onlyNull,
        @RequestParam(value = "limit", required = false) Integer limit
    ) {
        User loginUser = getLoginUser();
        Integer currentTenantId = loginUser != null ? loginUser.getTenantId() : null;

        BatchImportSupport.CompanyIdRefreshStats stats = batchImportSupport.refreshCompanyIdByCompanyName(
            creditCaseFilingService,
            creditCompanyService,
            currentTenantId,
            onlyNull,
            limit,
            CreditCaseFiling::getId,
            CreditCaseFiling::setId,
            CreditCaseFiling::getAppellee,
            CreditCaseFiling::getCompanyId,
            CreditCaseFiling::setCompanyId,
            CreditCaseFiling::getHasData,
            CreditCaseFiling::setHasData,
            CreditCaseFiling::getTenantId,
            CreditCaseFiling::new
        );

        if (!stats.anyDataRead) {
            return success("无可更新数据", stats.toMap());
        }
        return success("更新完成，更新" + stats.updated + "条", stats.toMap());
    }

    /**
     * 批量导入立案信息
     */
    @PreAuthorize("hasAuthority('credit:creditCaseFiling:save')")
    @Operation(summary = "批量导入立案信息")
    @PostMapping("/import")
    public ApiResult<List<String>> importBatch(@RequestParam("file") MultipartFile file,
                                               @RequestParam(value = "companyId", required = false) Integer companyId) {
        List<String> errorMessages = new ArrayList<>();
        int successCount = 0;
        Set<Integer> touchedCompanyIds = new HashSet<>();

        try {
            int sheetIndex = ExcelImportSupport.findSheetIndex(file, "立案信息", 0);
            ExcelImportSupport.ImportResult<CreditCaseFilingImportParam> importResult = ExcelImportSupport.read(
                file, CreditCaseFilingImportParam.class, this::isEmptyImportRow, sheetIndex);
            List<CreditCaseFilingImportParam> list = importResult.getData();
            int usedTitleRows = importResult.getTitleRows();
            int usedHeadRows = importResult.getHeadRows();
            int usedSheetIndex = importResult.getSheetIndex();

            if (CollectionUtils.isEmpty(list)) {
                return fail("未读取到数据，请确认模板表头与示例格式一致", null);
            }

            User loginUser = getLoginUser();
            Integer currentUserId = loginUser != null ? loginUser.getUserId() : null;
            Integer currentTenantId = loginUser != null ? loginUser.getTenantId() : null;
            // easypoi 默认不会读取单元格超链接地址；url 通常挂在“案号”列的超链接中，需要额外读取回填。
            Map<String, String> urlByCaseNumber = ExcelImportSupport.readHyperlinksByHeaderKey(file, usedSheetIndex, usedTitleRows, usedHeadRows, "案号");

            final int chunkSize = 500;
            final int mpBatchSize = 500;
            List<CreditCaseFiling> chunkItems = new ArrayList<>(chunkSize);
            List<Integer> chunkRowNumbers = new ArrayList<>(chunkSize);

            for (int i = 0; i < list.size(); i++) {
                CreditCaseFilingImportParam param = list.get(i);
                try {
                    CreditCaseFiling item = convertImportParamToEntity(param);
                    if (!ImportHelper.isBlank(item.getCaseNumber())) {
                        String link = urlByCaseNumber.get(item.getCaseNumber().trim());
                        if (link != null && !link.isEmpty()) {
                            item.setUrl(link);
                        }
                    }

                    if (item.getCompanyId() == null && companyId != null) {
                        item.setCompanyId(companyId);
                    }
                    if (item.getUserId() == null && currentUserId != null) {
                        item.setUserId(currentUserId);
                    }
                    if (item.getTenantId() == null && currentTenantId != null) {
                        item.setTenantId(currentTenantId);
                    }
                    if (item.getStatus() == null) {
                        item.setStatus(0);
                    }
                    if (item.getRecommend() == null) {
                        item.setRecommend(0);
                    }
                    if (item.getDeleted() == null) {
                        item.setDeleted(0);
                    }

                    int excelRowNumber = i + 1 + usedTitleRows + usedHeadRows;
                    if (ImportHelper.isBlank(item.getCaseNumber())) {
                        errorMessages.add("第" + excelRowNumber + "行：案号不能为空");
                        continue;
                    }

                    if (item.getCompanyId() != null && item.getCompanyId() > 0) {
                        touchedCompanyIds.add(item.getCompanyId());
                    }

                    chunkItems.add(item);
                    chunkRowNumbers.add(excelRowNumber);
                    if (chunkItems.size() >= chunkSize) {
                        successCount += batchImportSupport.persistChunkWithFallback(
                            chunkItems,
                            chunkRowNumbers,
                            () -> batchImportSupport.upsertBySingleKey(
                                creditCaseFilingService,
                                chunkItems,
                                CreditCaseFiling::getId,
                                CreditCaseFiling::setId,
                                CreditCaseFiling::getCaseNumber,
                                CreditCaseFiling::getCaseNumber,
                                null,
                                mpBatchSize
                            ),
                            (rowItem, rowNumber) -> {
                                boolean saved = creditCaseFilingService.save(rowItem);
                                if (!saved) {
                                    CreditCaseFiling existing = creditCaseFilingService.lambdaQuery()
                                        .eq(CreditCaseFiling::getCaseNumber, rowItem.getCaseNumber())
                                        .one();
                                    if (existing != null) {
                                        rowItem.setId(existing.getId());
                                        if (creditCaseFilingService.updateById(rowItem)) {
                                            return true;
                                        }
                                    }
                                } else {
                                    return true;
                                }
                                String prefix = rowNumber > 0 ? ("第" + rowNumber + "行：") : "";
                                errorMessages.add(prefix + "保存失败");
                                return false;
                            },
                            errorMessages
                        );
                        chunkItems.clear();
                        chunkRowNumbers.clear();
                    }
                } catch (Exception e) {
                    int excelRowNumber = i + 1 + usedTitleRows + usedHeadRows;
                    errorMessages.add("第" + excelRowNumber + "行：" + e.getMessage());
                    e.printStackTrace();
                }
            }

            if (!chunkItems.isEmpty()) {
                successCount += batchImportSupport.persistChunkWithFallback(
                    chunkItems,
                    chunkRowNumbers,
                    () -> batchImportSupport.upsertBySingleKey(
                        creditCaseFilingService,
                        chunkItems,
                        CreditCaseFiling::getId,
                        CreditCaseFiling::setId,
                        CreditCaseFiling::getCaseNumber,
                        CreditCaseFiling::getCaseNumber,
                        null,
                        mpBatchSize
                    ),
                    (rowItem, rowNumber) -> {
                        boolean saved = creditCaseFilingService.save(rowItem);
                        if (!saved) {
                            CreditCaseFiling existing = creditCaseFilingService.lambdaQuery()
                                .eq(CreditCaseFiling::getCaseNumber, rowItem.getCaseNumber())
                                .one();
                            if (existing != null) {
                                rowItem.setId(existing.getId());
                                if (creditCaseFilingService.updateById(rowItem)) {
                                    return true;
                                }
                            }
                        } else {
                            return true;
                        }
                        String prefix = rowNumber > 0 ? ("第" + rowNumber + "行：") : "";
                        errorMessages.add(prefix + "保存失败");
                        return false;
                    },
                    errorMessages
                );
            }

            creditCompanyRecordCountService.refresh(CreditCompanyRecordCountService.CountType.CASE_FILING, touchedCompanyIds);

            if (errorMessages.isEmpty()) {
                return success("成功导入" + successCount + "条数据", null);
            } else {
                return success("导入完成，成功" + successCount + "条，失败" + errorMessages.size() + "条", errorMessages);
            }
        } catch (Exception e) {
            e.printStackTrace();
            return fail("导入失败：" + e.getMessage(), null);
        }
    }

    /**
     * 下载立案信息导入模板
     */
    @Operation(summary = "下载立案信息导入模板")
    @GetMapping("/import/template")
    public void downloadTemplate(HttpServletResponse response) throws IOException {
        List<CreditCaseFilingImportParam> templateList = new ArrayList<>();

        CreditCaseFilingImportParam example = new CreditCaseFilingImportParam();
        example.setDataType("立案信息");
        example.setPlaintiffAppellant("原告示例");
        example.setAppellee("被告示例");
        example.setOtherPartiesThirdParty2("第三人示例");
        example.setInvolvedAmount("100000");
        example.setDataStatus("正常");
        example.setCaseNumber("（2024）示例案号");
        example.setCauseOfAction("案由示例");
        example.setCourtName("示例法院");
        example.setOccurrenceTime("2024-01-01");
        example.setComments("备注信息");
        templateList.add(example);

        Workbook workbook = ExcelImportSupport.buildTemplate("立案信息导入模板", "立案信息", CreditCaseFilingImportParam.class, templateList);

        response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        response.setHeader("Content-Disposition", "attachment; filename=credit_case_filing_import_template.xlsx");

        workbook.write(response.getOutputStream());
        workbook.close();
    }

    private boolean isEmptyImportRow(CreditCaseFilingImportParam param) {
        if (param == null) {
            return true;
        }
        return ImportHelper.isBlank(param.getCaseNumber())
            && ImportHelper.isBlank(param.getPlaintiffAppellant())
            && ImportHelper.isBlank(param.getAppellee())
            && ImportHelper.isBlank(param.getCauseOfAction())
            && ImportHelper.isBlank(param.getOtherPartiesThirdParty())
            && ImportHelper.isBlank(param.getOtherPartiesThirdParty2())
            && ImportHelper.isBlank(param.getCourtName())
            && ImportHelper.isBlank(param.getCourtName2())
            && ImportHelper.isBlank(param.getOccurrenceTime())
            && ImportHelper.isBlank(param.getOccurrenceTime2())
            && ImportHelper.isBlank(param.getInvolvedAmount())
            && ImportHelper.isBlank(param.getInvolvedAmount2())
            && ImportHelper.isBlank(param.getDataStatus())
            && ImportHelper.isBlank(param.getDataType())
            && ImportHelper.isBlank(param.getComments());
    }

    private CreditCaseFiling convertImportParamToEntity(CreditCaseFilingImportParam param) {
        CreditCaseFiling entity = new CreditCaseFiling();

        // Template compatibility: prefer new columns when present.
        String occurrenceTime = !ImportHelper.isBlank(param.getOccurrenceTime2())
            ? param.getOccurrenceTime2()
            : param.getOccurrenceTime();
        String otherPartiesThirdParty = !ImportHelper.isBlank(param.getOtherPartiesThirdParty2())
            ? param.getOtherPartiesThirdParty2()
            : param.getOtherPartiesThirdParty();
        String courtName = !ImportHelper.isBlank(param.getCourtName2())
            ? param.getCourtName2()
            : param.getCourtName();
        String involvedAmount = !ImportHelper.isBlank(param.getInvolvedAmount2())
            ? param.getInvolvedAmount2()
            : param.getInvolvedAmount();

        entity.setDataType(param.getDataType());
        entity.setPlaintiffAppellant(param.getPlaintiffAppellant());
        entity.setAppellee(param.getAppellee());
        entity.setDataStatus(param.getDataStatus());

        entity.setCaseNumber(param.getCaseNumber());
        entity.setCauseOfAction(param.getCauseOfAction());
        entity.setOtherPartiesThirdParty(otherPartiesThirdParty);
        entity.setCourtName(courtName);
        entity.setOccurrenceTime(occurrenceTime);
        entity.setInvolvedAmount(involvedAmount);
        entity.setComments(param.getComments());

        return entity;
    }

}
