package com.malk.service.workhours;

import com.alibaba.fastjson.JSON;
import com.malk.server.aliwork.YDConf;
import com.malk.server.aliwork.YDParam;
import com.malk.server.common.McException;
import com.malk.server.workhours.TimeCardApprovalStartRequest;
import com.malk.server.workhours.TimeCardRepairContextRequest;
import com.malk.server.workhours.TimeCardRepairSubmitRequest;
import com.malk.server.workhours.TimeCardRepairSummaryUpsertRequest;
import com.malk.server.workhours.WHConf;
import com.malk.service.aliwork.YDClient;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.time.LocalDate;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.YearMonth;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;

/** 补填 TimeCard 专用服务；不复用正常汇总表写入目标。 */
@Slf4j
@Service
public class TimeCardRepairService {
    private static final ZoneId ZONE = ZoneId.of("Asia/Shanghai");
    private static final DateTimeFormatter MONTH = DateTimeFormatter.ofPattern("yyyyMM");
    private static final String DEFAULT_MANAGER_ID = "634735129";
    // 宜搭查询接口对复制表新增的 mokwy 字段返回 field is null；沿用复制表中可检索的原字段。
    private static final String R_SUBMITTER = "textField_mmbffvd9";
    private static final String R_DAY = "textField_mmbffvdb";
    private static final String R_MONTH = "textField_mmbffvda";
    private static final String R_SUBMITTER_EMP = "employeeField_mmacxew4";
    private static final String R_MONTH_DATE = "dateField_mmacxewf";
    private static final String R_DAY_DATE = "dateField_mmbffvd8";
    private static final String R_BIL_TABLE = "tableField_mmczo634";
    private static final String R_NON_TABLE = "tableField_mmczo63h";
    private static final String R_OTHER_TABLE = "tableField_mmeakgid";
    private static final String R_DAILY_DRAFT = "numberField_mmd1smel";
    private static final String R_DAILY_SUBMITTED = "numberField_mmd1smem";
    private static final String R_DAILY_APPROVED = "numberField_mmeakgi4";
    private static final String R_DAILY_CHANGE = "numberField_mmeakgi5";
    private static final long SUBMIT_GUARD_TTL_MILLIS = 30_000L;
    private static final ConcurrentHashMap<String, SubmitGuard> SUBMIT_GUARDS = new ConcurrentHashMap<>();
    private static final List<String> R_TOTAL_FIELDS = Arrays.asList(
            "numberField_mmacxew9", "numberField_mmacxewa", "numberField_mmacxewg", "numberField_mmad6jbc",
            "numberField_mmad6jbx", "numberField_mmad6jbz", "numberField_mmad6jc1", "numberField_mmeakgia",
            "numberField_mmd1smeo", "numberField_mmd1smeq", "numberField_mmd1smes", "numberField_mmeakgic",
            R_DAILY_DRAFT, R_DAILY_SUBMITTED, R_DAILY_APPROVED, R_DAILY_CHANGE);

    @Autowired private YDClient ydClient;
    @Autowired private WHConf whConf;
    @Autowired private MonthClosingService monthClosingService;
    @Autowired private ReSubmitApprovalService reSubmitApprovalService;

    public Map<String, Object> context(TimeCardRepairContextRequest request) {
        validateMonthRequest(request == null ? null : request.getSubmitterUserId(),
                request == null ? null : request.getSourceMonthText());
        Map<String, Object> result = new LinkedHashMap<>();
        result.put("closed", monthClosingService.isClosed(request.getSourceMonthText()));
        result.put("originalRecords", query(whConf.getFormUuidWorkHoursSummary(),
                mapOf("textField_mmbffvd9", request.getSubmitterUserId(), "textField_mmbffvda", request.getSourceMonthText())));
        List<Map> repairRecords = query(whConf.getFormUuidRepairWorkHoursSummary(),
                mapOf(R_SUBMITTER, request.getSubmitterUserId(), R_MONTH, request.getSourceMonthText()));
        result.put("repairRecords", repairRecords);
        // 兼容页面状态合并接口的 records 约定；原始双表结果仍通过 repairRecords 返回。
        result.put("records", repairRecords);
        return result;
    }

    public boolean upsert(TimeCardRepairSummaryUpsertRequest request) {
        McException.assertAccessException(request == null, "请求不能为空");
        McException.assertAccessException(StringUtils.isBlank(request.getDayText())
                || !request.getDayText().matches("\\d{8}"), "日期必须为yyyyMMdd");
        try {
            LocalDate.parse(request.getDayText(), DateTimeFormatter.ofPattern("yyyyMMdd"));
        } catch (RuntimeException ex) {
            McException.assertAccessException(true, "日期必须为有效的yyyyMMdd");
        }
        String monthText = request.getDayText().substring(0, 6);
        validateMonthRequest(request.getSubmitterUserId(), monthText);
        McException.assertAccessException(!monthClosingService.isClosed(monthText), "补填只能保存已封账月份");
        McException.assertAccessException(StringUtils.isBlank(whConf.getFormUuidRepairWorkHoursSummary()), "补填汇总表未配置");
        McException.assertAccessException(StringUtils.isBlank(whConf.getRepairSummarySyncStatusField()), "补填汇总状态字段未配置");
        McException.assertAccessException(request.getFormData() == null, "补填工时数据不能为空");
        assertSourceDateAvailable(request.getSubmitterUserId(), request.getDayText());
        Map<String, Object> data = new LinkedHashMap<>(request.getFormData());
        data.put(R_SUBMITTER, request.getSubmitterUserId());
        data.put(R_DAY, request.getDayText());
        data.put(R_MONTH, request.getDayText().substring(0, 6));
        data.put(whConf.getRepairSummarySyncStatusField(), "暂存");
        ydClient.operateData(YDParam.builder().appType(whConf.getYidaAppType())
                .systemToken(whConf.getYidaSystemToken()).formUuid(whConf.getFormUuidRepairWorkHoursSummary())
                .searchCondition(JSON.toJSONString(mapOf(R_SUBMITTER, request.getSubmitterUserId(), R_DAY, request.getDayText())))
                .formDataJson(JSON.toJSONString(data)).noExecuteExpression(false).build(), YDConf.FORM_OPERATION.upsert);
        return true;
    }

    public Map<String, Object> submit(TimeCardRepairSubmitRequest request) {
        McException.assertAccessException(request == null, "请求不能为空");
        validateMonthRequest(request.getSubmitterUserId(), request.getSourceMonthText());
        McException.assertAccessException(!monthClosingService.isClosed(request.getSourceMonthText()), "补填只能提交已封账月份");
        Map<String, Object> projectGroups = request.getProjectGroups() == null ? Collections.emptyMap() : request.getProjectGroups();
        Map other = request.getOtherGroup() == null ? Collections.emptyMap() : request.getOtherGroup();
        String guardKey = buildSubmitGuardKey(request, projectGroups, other);
        SubmitGuard guard = acquireSubmitGuard(guardKey);
        Map<String, Object> cachedResult = guard.cachedResult();
        if (cachedResult != null) return cachedResult;
        try {
            String batch = UUID.randomUUID().toString();
            long submitDate = LocalDate.now(ZONE).atStartOfDay(ZONE).toInstant().toEpochMilli();
            int rowCount = validateSubmitRows(request, projectGroups, other);
            McException.assertAccessException(rowCount == 0, "没有需要提交的补填工时");
            for (Object rawGroup : projectGroups.values()) {
                if (!(rawGroup instanceof Map)) continue;
                Map group = (Map) rawGroup;
                String managerId = normalizeManagerId(text(group.get("managerId")));
                for (String category : new String[]{"billableRows", "nonBillableRows"}) {
                    for (Object rawRow : list(group.get(category))) {
                        if (rawRow instanceof Map) {
                            upsertRepairRow(request, (Map) rawRow, category, managerId, batch, submitDate);
                        }
                    }
                }
            }
            String otherManagerId = normalizeManagerId(text(other.get("managerId")));
            for (Object rawRow : list(other.get("otherRows"))) {
                if (rawRow instanceof Map) {
                    upsertRepairRow(request, (Map) rawRow, "otherRows", otherManagerId, batch, submitDate);
                }
            }
            startApprovals(request, projectGroups, other, batch, submitDate);
            Map<String, Object> result = mapOf("batch", batch, "submitDate", submitDate, "status", "审批中");
            guard.complete(result);
            return result;
        } catch (RuntimeException ex) {
            SUBMIT_GUARDS.remove(guardKey, guard);
            throw ex;
        }
    }

    private String buildSubmitGuardKey(TimeCardRepairSubmitRequest request,
                                       Map<String, Object> projectGroups, Map other) {
        String payload = request.getSubmitterUserId() + "|" + request.getSourceMonthText()
                + "|" + JSON.toJSONString(projectGroups) + "|" + JSON.toJSONString(other);
        try {
            byte[] digest = MessageDigest.getInstance("SHA-256")
                    .digest(payload.getBytes(StandardCharsets.UTF_8));
            StringBuilder hex = new StringBuilder(digest.length * 2);
            for (byte value : digest) hex.append(String.format("%02x", value));
            return hex.toString();
        } catch (NoSuchAlgorithmException ex) {
            throw new IllegalStateException("提交幂等键计算失败", ex);
        }
    }

    private SubmitGuard acquireSubmitGuard(String key) {
        long now = System.currentTimeMillis();
        synchronized (SUBMIT_GUARDS) {
            SUBMIT_GUARDS.entrySet().removeIf(entry -> entry.getValue().expiresAt <= now);
            SubmitGuard existing = SUBMIT_GUARDS.get(key);
            if (existing != null && existing.expiresAt > now) {
                if (existing.result != null) return existing;
                McException.assertAccessException(true, "补填提交正在处理中，请勿重复提交");
            }
            SubmitGuard guard = new SubmitGuard(now + SUBMIT_GUARD_TTL_MILLIS);
            SUBMIT_GUARDS.put(key, guard);
            return guard;
        }
    }

    private static final class SubmitGuard {
        private final long expiresAt;
        private Map<String, Object> result;

        private SubmitGuard(long expiresAt) {
            this.expiresAt = expiresAt;
        }

        private synchronized void complete(Map<String, Object> value) {
            this.result = new LinkedHashMap<>(value);
        }

        private synchronized Map<String, Object> cachedResult() {
            return result == null ? null : new LinkedHashMap<>(result);
        }
    }

    /**
     * 补填审批补发起：只扫描近期修改的补填汇总，按员工、月份和补填提交日期补齐缺失明细。
     * 正常 TimeCard 补发逻辑仍由 ReSubmitApprovalService 独立处理。
     *
     * @param lookbackDays 最近修改自然日数量
     * @return 本次补发的审批分组数量及补试后失败批次数
     */
    public RepairResubmitResult resubmitRecentlyModifiedPending(int lookbackDays) {
        String[] window = modifiedDateWindow(lookbackDays);
        List<Map> records = queryModified(
                whConf.getFormUuidRepairWorkHoursSummary(), window[0], window[1]);
        Map<String, RepairBatch> batches = buildPendingBatches(records);
        Map<String, Set<String>> coverageByMonth = new HashMap<>();
        int started = 0;
        int failed = 0;
        List<RepairBatch> retryQueue = new ArrayList<>();
        for (RepairBatch batch : batches.values()) {
            try {
                Set<String> covered = coverageByMonth.computeIfAbsent(
                        batch.monthText, this::loadRepairApprovalDetailCoverage);
                started += submitMissingRepairApprovals(batch, covered);
            } catch (Exception ex) {
                retryQueue.add(batch);
                log.warn("[补填审批补发] 首次处理失败，待本轮扫描结束补试 batch={}", batch.batchId, ex);
            }
        }
        for (RepairBatch batch : retryQueue) {
            try {
                started += submitMissingRepairApprovals(
                        batch, loadRepairApprovalDetailCoverage(batch.monthText));
            } catch (Exception ex) {
                failed++;
                log.error("[补填审批补发] 本轮补试失败 batch={}", batch.batchId, ex);
            }
        }
        log.info("[补填审批补发] from={} to={} records={} batches={} started={} failed={}",
                window[0], window[1], records.size(), batches.size(), started, failed);
        return new RepairResubmitResult(started, failed);
    }

    public static final class RepairResubmitResult {
        private final int started;
        private final int failed;

        public RepairResubmitResult(int started, int failed) {
            this.started = started;
            this.failed = failed;
        }

        public int getStarted() {
            return started;
        }

        public int getFailed() {
            return failed;
        }
    }

    private int submitMissingRepairApprovals(RepairBatch batch, Set<String> covered) {
        removeCoveredRows(batch, covered);
        Map<String, Object> missingProjects = batch.projectGroups;
        Map<String, Object> missingOther = batch.otherGroup;
        if (missingProjects.isEmpty() && missingOther.isEmpty()) return 0;
        TimeCardRepairSubmitRequest request = new TimeCardRepairSubmitRequest();
        request.setSourceMonthText(batch.monthText);
        request.setSubmitterUserId(batch.userId);
        request.setSubmitterName(batch.submitterName);
        request.setProjectGroups(missingProjects);
        request.setOtherGroup(missingOther);
        startApprovals(request, missingProjects, missingOther, batch.batchId, batch.submitDate);
        return missingProjects.size() + (missingOther.isEmpty() ? 0 : 1);
    }

    private void upsertRepairRow(TimeCardRepairSubmitRequest request, Map row, String category,
                                 String managerId, String batch, long submitDate) {
        String day = text(row.get("dateStr"));
        if (StringUtils.isBlank(day)) day = text(row.get("dayText"));
        String key = day;
        List<Map> found = query(whConf.getFormUuidRepairWorkHoursSummary(),
                mapOf(R_SUBMITTER, request.getSubmitterUserId(), R_DAY, key));
        McException.assertAccessException(found.size() != 1, "补填汇总完整记录不存在或重复，请先保存后提交 userId="
                + request.getSubmitterUserId() + ", day=" + key);
        String instanceId = text(found.get(0).get("formInstId"));
        if (StringUtils.isBlank(instanceId)) instanceId = text(found.get(0).get("formInstanceId"));
        McException.assertAccessException(StringUtils.isBlank(instanceId), "补填汇总实例ID为空");
        Map existing = detail(instanceId);

        Map<String, Object> data = new LinkedHashMap<>();
        data.put(R_SUBMITTER, request.getSubmitterUserId());
        data.put(R_DAY, day);
        data.put(R_MONTH, request.getSourceMonthText());
        data.put(whConf.getRepairSummarySyncStatusField(), "审批中");
        data.put(whConf.getRepairSummaryFillTypeField(), "补填");
        data.put(whConf.getRepairSummarySubmitDateField(), submitDate);
        data.put(whConf.getRepairSummaryBatchField(), batch);
        data.put(whConf.getRepairSummarySourceMonthField(), request.getSourceMonthText());
        data.put(R_SUBMITTER_EMP, Collections.singletonList(request.getSubmitterUserId()));
        data.put(R_MONTH_DATE, LocalDate.parse(request.getSourceMonthText() + "01", DateTimeFormatter.ofPattern("yyyyMMdd"))
                .atStartOfDay(ZONE).toInstant().toEpochMilli());
        data.put(R_DAY_DATE, LocalDate.parse(day, DateTimeFormatter.ofPattern("yyyyMMdd"))
                .atStartOfDay(ZONE).toInstant().toEpochMilli());
        Map<String, Object> child = new LinkedHashMap<>();
        double hours = num(row.get("hours"));
        if ("billableRows".equals(category)) {
            child.put("numberField_mmczo636", hours);
            child.put("numberField_mmczo637", 0d);
        } else if ("nonBillableRows".equals(category)) {
            child.put("numberField_mmczo63c", hours);
            child.put("numberField_mmczo63d", 0d);
        } else {
            child.put("numberField_mmeakgij", hours);
            child.put("numberField_mmeakgii", 0d);
        }
        String tableField;
        String keyField;
        if ("billableRows".equals(category)) {
            child.put("textField_mmacxew3", text(row.get("projectCode")));
            child.put("textField_mmad6jcj", text(row.get("projectName")));
            tableField = R_BIL_TABLE; keyField = "textField_mmacxew3";
        } else if ("nonBillableRows".equals(category)) {
            child.put("textField_mmczo639", text(row.get("projectCode")));
            child.put("textField_mmczo63g", text(row.get("projectName")));
            tableField = R_NON_TABLE; keyField = "textField_mmczo639";
        } else {
            child.put("selectField_mmeakgie", text(row.get("activityName")));
            tableField = R_OTHER_TABLE; keyField = "selectField_mmeakgie";
        }
        if (StringUtils.isNotBlank(managerId)) {
            if ("billableRows".equals(category)) {
                child.put("employeeField_mkoxpswf", Collections.singletonList(managerId));
            } else if ("nonBillableRows".equals(category)) {
                child.put("employeeField_mmczo63a", Collections.singletonList(managerId));
            } else {
                data.put("employeeField_mh8xhqc3", Collections.singletonList(managerId));
            }
        }
        List<Map> current = copyRows(existing.get(tableField));
        String submittedField = "billableRows".equals(category)
                ? "numberField_mmczo636"
                : ("nonBillableRows".equals(category) ? "numberField_mmczo63c" : "numberField_mmeakgij");
        // prd 与原 TimeCard 一致：提交值覆盖 submitted，draft 保留供拒绝后恢复编辑。
        mergeSubmittedRow(current, child, keyField, submittedField, hours);
        data.put(tableField, current);
        Map snapshot = new LinkedHashMap(existing);
        snapshot.put(tableField, current);
        applySummaryTotals(data, snapshot);
        final String targetInstanceId = instanceId;
        operateAndVerify(
                () -> ydClient.operateData(YDParam.builder().appType(whConf.getYidaAppType())
                        .systemToken(whConf.getYidaSystemToken()).formInstanceId(targetInstanceId)
                        .updateFormDataJson(JSON.toJSONString(data)).ignoreEmpty(false).useLatestVersion(true).build(),
                        YDConf.FORM_OPERATION.update),
                () -> verifySubmittedRepairRow(targetInstanceId, tableField, keyField,
                        text(child.get(keyField)), submittedField, hours, data));
    }

    private void verifySubmittedRepairRow(String instanceId, String tableField, String keyField,
                                          String rowKey, String submittedField, double hours,
                                          Map<String, Object> expected) {
        Map actual = detail(instanceId);
        Map actualRow = null;
        for (Map row : list(actual.get(tableField))) {
            if (rowKey.equals(text(row.get(keyField)))) {
                actualRow = row;
                break;
            }
        }
        McException.assertAccessException(actualRow == null
                        || !sameHours(num(actualRow.get(submittedField)), hours),
                "补填汇总提交子表回读不一致 instanceId=" + instanceId + ", key=" + rowKey);
        for (String field : R_TOTAL_FIELDS) {
            McException.assertAccessException(!sameHours(num(actual.get(field)), num(expected.get(field))),
                    "补填汇总主表合计回读不一致 instanceId=" + instanceId + ", field=" + field);
        }
        String statusField = whConf.getRepairSummarySyncStatusField();
        McException.assertAccessException(!text(expected.get(statusField)).equals(text(actual.get(statusField))),
                "补填汇总审批状态回读不一致 instanceId=" + instanceId);
    }

    private void operateAndVerify(Runnable operation, Runnable verification) {
        try {
            operation.run();
        } catch (RuntimeException operationException) {
            try {
                verification.run();
                return;
            } catch (RuntimeException verificationException) {
                operationException.addSuppressed(verificationException);
                throw operationException;
            }
        }
        verification.run();
    }

    private static boolean sameHours(double actual, double expected) {
        return Math.abs(actual - expected) <= 1e-6;
    }

    private Map detail(String id) {
        if (StringUtils.isBlank(id)) return new HashMap();
        com.malk.server.dingtalk.DDR_New result = ydClient.queryData(YDParam.builder()
                .appType(whConf.getYidaAppType()).systemToken(whConf.getYidaSystemToken()).formInstanceId(id).build(), YDConf.FORM_QUERY.retrieve_id);
        return result == null || result.getFormData() == null ? new HashMap() : result.getFormData();
    }

    private void startApprovals(TimeCardRepairSubmitRequest request, Map<String, Object> groups,
                                Map<String, Object> other, String batch, long submitDate) {
        for (Object raw : groups.values()) {
            if (!(raw instanceof Map)) continue;
            Map group = (Map) raw;
            Map<String, Object> fd = new LinkedHashMap<>();
            fd.put("dateField_mmacxewf", parseMonth(request.getSourceMonthText()));
            fd.put("employeeField_moi9pvt1", Collections.singletonList(request.getSubmitterUserId()));
            fd.put(whConf.getApprovalFillTypeField(), "补填");
            fd.put(whConf.getApprovalRepairSubmitDateField(), submitDate);
            fd.put(whConf.getApprovalRepairBatchField(), batch);
            fd.put(whConf.getApprovalRepairSourceMonthField(), request.getSourceMonthText());
            fd.put("textField_mmd2lv0y", request.getSourceMonthText());
            fd.put("numberField_mmd2z155", sumRows(group.get("billableRows")));
            fd.put("numberField_mmd2z156", sumRows(group.get("nonBillableRows")));
            fd.put("numberField_mmd5b5gl", sumRows(group.get("billableRows")) + sumRows(group.get("nonBillableRows")));
            fd.put("employeeField_mkoxpswf", Collections.singletonList(
                    normalizeManagerId(text(group.get("managerId")))));
            fd.put("tableField_mmae8t99", approvalRows(group.get("billableRows"), true, request));
            fd.put("tableField_mmd1wu9h", approvalRows(group.get("nonBillableRows"), false, request));
            start(request.getSubmitterUserId(), whConf.getFormUuidApproval(), whConf.getApprovalProcessCode(), fd);
        }
        if (other != null && !list(other.get("otherRows")).isEmpty()) {
            Map<String, Object> fd = new LinkedHashMap<>();
            fd.put("dateField_mmacxewf", parseMonth(request.getSourceMonthText()));
            fd.put("employeeField_moi9pvt1", Collections.singletonList(request.getSubmitterUserId()));
            fd.put(whConf.getApprovalFillTypeField(), "补填");
            fd.put(whConf.getOtherApprovalRepairSubmitDateField(), submitDate);
            fd.put(whConf.getOtherApprovalRepairBatchField(), batch);
            fd.put(whConf.getOtherApprovalRepairSourceMonthField(), request.getSourceMonthText());
            fd.put("textField_mmd2lv0y", request.getSourceMonthText());
            fd.put("numberField_mmd5b5gl", sumRows(other.get("otherRows")));
            fd.put("employeeField_mh8xhqc3", Collections.singletonList(
                    normalizeManagerId(text(other.get("managerId")))));
            fd.put("tableField_mmd1wu9h", approvalRows(other.get("otherRows"), false, request));
            start(request.getSubmitterUserId(), whConf.getFormUuidOtherApproval(), whConf.getOtherApprovalProcessCode(), fd);
        }
    }

    private void start(String userId, String formUuid, String processCode, Map<String, Object> data) {
        reSubmitApprovalService.startApproval(new TimeCardApprovalStartRequest() {{
            setFormUuid(formUuid); setProcessCode(processCode); setFormDataJson(JSON.toJSONString(data));
        }});
    }

    private List<Map<String, Object>> approvalRows(Object raw, boolean billable, TimeCardRepairSubmitRequest request) {
        List<Map<String, Object>> result = new ArrayList<>();
        for (Object item : list(raw)) {
            if (!(item instanceof Map)) continue;
            Map row = (Map) item;
            String day = text(row.get("dateStr"));
            Map<String, Object> out = new LinkedHashMap<>();
            out.put(billable ? "dateField_mmbffvd8" : "dateField_mmd2z150", parseDay(day));
            out.put(billable ? "textField_mmd8g654" : "textField_mmd8g655", day);
            out.put(billable ? "textField_mmd1ozk4" : "textField_mmd1wu9f", request.getSubmitterUserId());
            out.put(billable ? "employeeField_mmacxew4" : "employeeField_mmd1wu9b",
                    Collections.singletonList(request.getSubmitterUserId()));
            out.put(billable ? "textField_mmdbi2n2" : "textField_mmdbi2n0", request.getSourceMonthText());
            out.put(billable ? "numberField_mmacxew9" : "numberField_mmd1wu9e", num(row.get("hours")));
            out.put(billable ? "textField_mmacxew3" : "textField_mmd1wu9d", text(row.get("projectCode")));
            if (billable) out.put("textField_mkov5ozd", text(row.get("projectName")));
            else if (!text(row.get("activityName")).isEmpty()) {
                out.put("selectField_mmeakgie", text(row.get("activityName")));
                out.remove("textField_mmd1wu9d");
            } else out.put("textField_mmd1wu9c", text(row.get("projectName")));
            // 其他工时审批沿用 radioField_mpwhk294；只有 Non Billable 使用 295。
            String opinionField = billable || out.containsKey("selectField_mmeakgie")
                    ? "radioField_mpwhk294" : "radioField_mpwhk295";
            out.put(opinionField, "同意");
            result.add(out);
        }
        return result;
    }

    private long parseDay(String day) { return LocalDate.parse(day, DateTimeFormatter.ofPattern("yyyyMMdd")).atStartOfDay(ZONE).toInstant().toEpochMilli(); }
    private List<Map> query(String formUuid, Map<String, Object> search) {
        if (StringUtils.isBlank(formUuid)) return new ArrayList<>();
        Object data = ydClient.queryData(YDParam.builder().appType(whConf.getYidaAppType()).systemToken(whConf.getYidaSystemToken())
                .formUuid(formUuid).searchFieldJson(JSON.toJSONString(search)).currentPage(1).pageSize(100).build(), YDConf.FORM_QUERY.retrieve_search_form).getData();
        return data instanceof List ? (List<Map>) data : new ArrayList<>();
    }
    private void validateMonthRequest(String userId, String month) {
        McException.assertAccessException(StringUtils.isAnyBlank(userId, month)
                || !month.matches("\\d{6}"), "员工和月份不能为空且月份必须为yyyyMM");
        try {
            YearMonth.parse(month, MONTH);
        } catch (RuntimeException ex) {
            McException.assertAccessException(true, "月份必须为有效的yyyyMM");
        }
    }

    private void validateRepairRow(TimeCardRepairSubmitRequest request, Map row, String category) {
        String day = text(row.get("dateStr"));
        if (StringUtils.isBlank(day)) day = text(row.get("dayText"));
        McException.assertAccessException(!day.matches("\\d{8}")
                || !day.startsWith(request.getSourceMonthText()), "补填日期必须属于来源月份");
        try {
            LocalDate.parse(day, DateTimeFormatter.ofPattern("yyyyMMdd"));
        } catch (RuntimeException ex) {
            McException.assertAccessException(true, "补填日期必须为有效的yyyyMMdd");
        }
        double hours = num(row.get("hours"));
        McException.assertAccessException(hours <= 0d || hours > 24d, "补填工时必须大于0且不超过24小时");
        if (!"otherRows".equals(category)) {
            McException.assertAccessException(StringUtils.isBlank(text(row.get("projectCode"))),
                    ("billableRows".equals(category) ? "Billable" : "Non Billable") + "工时必须填写项目编号");
        }
        assertSourceDateAvailable(request.getSubmitterUserId(), day);
        assertRepairRowMutable(request.getSubmitterUserId(), day, row, category);
    }

    private int validateSubmitRows(TimeCardRepairSubmitRequest request,
                                   Map<String, Object> projectGroups,
                                   Map<String, Object> otherGroup) {
        int count = 0;
        for (Object rawGroup : projectGroups.values()) {
            if (!(rawGroup instanceof Map)) continue;
            Map group = (Map) rawGroup;
            for (String category : new String[]{"billableRows", "nonBillableRows"}) {
                for (Object rawRow : list(group.get(category))) {
                    if (!(rawRow instanceof Map)) continue;
                    validateRepairRow(request, (Map) rawRow, category);
                    count++;
                }
            }
        }
        for (Object rawRow : list(otherGroup.get("otherRows"))) {
            if (!(rawRow instanceof Map)) continue;
            validateRepairRow(request, (Map) rawRow, "otherRows");
            count++;
        }
        return count;
    }

    private void assertSourceDateAvailable(String userId, String day) {
        List<Map> original = query(whConf.getFormUuidWorkHoursSummary(), mapOf(R_SUBMITTER, userId, R_DAY, day));
        boolean hasApprovedOrChangedHours = original.stream()
                .anyMatch(TimeCardRepairService::hasApprovedOrChangedHours);
        McException.assertAccessException(hasApprovedOrChangedHours,
                "来源日期已有已审批或变更工时，不能补填 userId=" + userId + ", day=" + day);
    }

    /** 仅原汇总当天已审批与变更工时的实际合计大于 0 时禁止补填；暂存草稿不占用补填资格。 */
    static boolean hasApprovedOrChangedHours(Map record) {
        Object nested = record == null ? null : record.get("formData");
        Map formData = nested instanceof Map ? (Map) nested : record;
        if (formData == null) return false;
        return num(formData.get(R_DAILY_APPROVED)) + num(formData.get(R_DAILY_CHANGE)) > 1e-6;
    }

    private void assertRepairRowMutable(String userId, String day, Map row, String category) {
        List<Map> existing = query(whConf.getFormUuidRepairWorkHoursSummary(), mapOf(R_SUBMITTER, userId, R_DAY, day));
        McException.assertAccessException(existing.size() > 1, "补填汇总记录重复 userId=" + userId + ", day=" + day);
        if (existing.size() != 1) return;
        String id = text(existing.get(0).get("formInstId"));
        if (StringUtils.isBlank(id)) id = text(existing.get(0).get("formInstanceId"));
        Map fd = detail(id);
        String projectCode = text(row.get("projectCode"));
        String activityName = text(row.get("activityName"));
        boolean other = "otherRows".equals(category);
        String table = other ? R_OTHER_TABLE
                : ("billableRows".equals(category) ? R_BIL_TABLE : R_NON_TABLE);
        String keyField = other ? "selectField_mmeakgie"
                : (R_BIL_TABLE.equals(table) ? "textField_mmacxew3" : "textField_mmczo639");
        String submittedField = other ? "numberField_mmeakgij"
                : (R_BIL_TABLE.equals(table) ? "numberField_mmczo636" : "numberField_mmczo63c");
        String approvedField = other ? "numberField_mmeakgii"
                : (R_BIL_TABLE.equals(table) ? "numberField_mmczo637" : "numberField_mmczo63d");
        String key = other ? activityName : projectCode;
        for (Map child : list(fd.get(table))) {
            if (key.equals(text(child.get(keyField)))) {
                McException.assertAccessException(num(child.get(submittedField)) > 1e-6
                                || num(child.get(approvedField)) > 1e-6,
                        "该补填明细已提交或审批完成，不能再次补填 day=" + day + ", key=" + key);
            }
        }
    }

    private long parseMonth(String month) {
        return LocalDate.parse(month + "01", DateTimeFormatter.ofPattern("yyyyMMdd"))
                .atStartOfDay(ZONE).toInstant().toEpochMilli();
    }

    private Map<String, RepairBatch> buildPendingBatches(List<Map> records) {
        Map<String, RepairBatch> batches = new LinkedHashMap<>();
        for (Map item : records) {
            Map fd = formData(item);
            if (!"审批中".equals(text(fd.get(whConf.getRepairSummarySyncStatusField())))) continue;
            String userId = text(fd.get(R_SUBMITTER));
            String monthText = text(fd.get(R_MONTH));
            String batchId = text(fd.get(whConf.getRepairSummaryBatchField()));
            long submitDate = (long) num(fd.get(whConf.getRepairSummarySubmitDateField()));
            if (StringUtils.isAnyBlank(userId, monthText, batchId) || submitDate <= 0) continue;
            String submissionKey = userId + "|" + monthText + "|" + batchId;
            RepairBatch batch = batches.computeIfAbsent(submissionKey, key -> {
                RepairBatch value = new RepairBatch();
                value.batchId = batchId;
                value.userId = userId;
                value.monthText = monthText;
                value.submitDate = submitDate;
                value.submitterName = text(fd.get("textField_mmoazo1b"));
                return value;
            });
            String dayText = text(fd.get(R_DAY));
            collectPendingProjectRows(batch, fd, dayText, true);
            collectPendingProjectRows(batch, fd, dayText, false);
            collectPendingOtherRows(batch, fd, dayText);
        }
        return batches;
    }

    private void collectPendingProjectRows(RepairBatch batch, Map fd, String dayText, boolean billable) {
        String tableField = billable ? R_BIL_TABLE : R_NON_TABLE;
        String managerField = billable ? "employeeField_mkoxpswf" : "employeeField_mmczo63a";
        String submittedField = billable ? "numberField_mmczo636" : "numberField_mmczo63c";
        String approvedField = billable ? "numberField_mmczo637" : "numberField_mmczo63d";
        String projectCodeField = billable ? "textField_mmacxew3" : "textField_mmczo639";
        String projectNameField = billable ? "textField_mmad6jcj" : "textField_mmczo63g";
        for (Map child : list(fd.get(tableField))) {
            double hours = num(child.get(submittedField)) - num(child.get(approvedField));
            if (hours <= 1e-6) continue;
            String managerId = firstUserId(child, managerField);
            if (StringUtils.isBlank(managerId)) managerId = DEFAULT_MANAGER_ID;
            final String resolvedManagerId = managerId;
            Map<String, Object> group = (Map<String, Object>) batch.projectGroups.computeIfAbsent(resolvedManagerId, key -> {
                Map<String, Object> value = new LinkedHashMap<>();
                value.put("managerId", resolvedManagerId);
                value.put("billableRows", new ArrayList<Map>());
                value.put("nonBillableRows", new ArrayList<Map>());
                return value;
            });
            Map<String, Object> row = mapOf(
                    "dateStr", dayText,
                    "projectCode", text(child.get(projectCodeField)),
                    "projectName", text(child.get(projectNameField)),
                    "hours", hours);
            ((List<Map<String, Object>>) group.get(billable ? "billableRows" : "nonBillableRows")).add(row);
        }
    }

    private void collectPendingOtherRows(RepairBatch batch, Map fd, String dayText) {
        for (Map child : list(fd.get(R_OTHER_TABLE))) {
            double hours = num(child.get("numberField_mmeakgij")) - num(child.get("numberField_mmeakgii"));
            if (hours <= 1e-6) continue;
            String managerId = firstUserId(fd, "employeeField_mh8xhqc3");
            if (StringUtils.isBlank(managerId)) managerId = DEFAULT_MANAGER_ID;
            batch.otherGroup.put("managerId", managerId);
            List<Map<String, Object>> rows = (List<Map<String, Object>>) batch.otherGroup.computeIfAbsent(
                    "otherRows", key -> new ArrayList<Map<String, Object>>());
            rows.add(mapOf("dateStr", dayText,
                    "activityName", text(child.get("selectField_mmeakgie")), "hours", hours));
        }
    }

    private Set<String> loadRepairApprovalDetailCoverage(String monthText) {
        Set<String> covered = new HashSet<>();
        Map<String, Object> search = mapOf(
                whConf.getApprovalFillTypeField(), "补填",
                "textField_mmd2lv0y", monthText);
        for (Map item : queryProcesses(whConf.getFormUuidApproval(), search)) {
            collectRepairApprovalCoverage(item, false, covered);
        }
        for (Map item : queryProcesses(whConf.getFormUuidOtherApproval(), search)) {
            collectRepairApprovalCoverage(item, true, covered);
        }
        return covered;
    }

    private void collectRepairApprovalCoverage(Map item, boolean other, Set<String> covered) {
        String status = text(item.get("instanceStatus")).toUpperCase(Locale.ROOT);
        String approvedResult = text(item.get("approvedResult")).toLowerCase(Locale.ROOT);
        if (!"RUNNING".equals(status)
                && !("COMPLETED".equals(status) && "agree".equals(approvedResult))) {
            return;
        }
        Map fd = formData(item);
        if (other) {
            addCoverageRows(covered, list(fd.get("tableField_mmd1wu9h")), "other",
                    "textField_mmd1wu9f", "textField_mmd8g655", "selectField_mmeakgie",
                    "radioField_mpwhk294", status);
            return;
        }
        addCoverageRows(covered, list(fd.get("tableField_mmae8t99")), "billable",
                "textField_mmd1ozk4", "textField_mmd8g654", "textField_mmacxew3",
                "radioField_mpwhk294", status);
        addCoverageRows(covered, list(fd.get("tableField_mmd1wu9h")), "nonBillable",
                "textField_mmd1wu9f", "textField_mmd8g655", "textField_mmd1wu9d",
                "radioField_mpwhk295", status);
    }

    private void addCoverageRows(Set<String> covered, List<Map> rows, String category,
                                 String userField, String dayField, String keyField,
                                 String opinionField, String status) {
        for (Map row : rows) {
            if ("COMPLETED".equals(status)
                    && row.containsKey(opinionField)
                    && !"同意".equals(text(row.get(opinionField)))) {
                continue;
            }
            covered.add(coverageKey(category, text(row.get(userField)),
                    text(row.get(dayField)), text(row.get(keyField))));
        }
    }

    private void removeCoveredRows(RepairBatch batch, Set<String> covered) {
        Iterator<Map.Entry<String, Object>> iterator = batch.projectGroups.entrySet().iterator();
        while (iterator.hasNext()) {
            Map group = (Map) iterator.next().getValue();
            removeCoveredProjectRows(batch.userId, list(group.get("billableRows")),
                    "billable", covered);
            removeCoveredProjectRows(batch.userId, list(group.get("nonBillableRows")),
                    "nonBillable", covered);
            if (list(group.get("billableRows")).isEmpty()
                    && list(group.get("nonBillableRows")).isEmpty()) {
                iterator.remove();
            }
        }
        List<Map> otherRows = list(batch.otherGroup.get("otherRows"));
        otherRows.removeIf(row -> covered.contains(coverageKey("other", batch.userId,
                text(row.get("dateStr")), text(row.get("activityName")))));
        if (otherRows.isEmpty()) batch.otherGroup.clear();
    }

    private void removeCoveredProjectRows(String userId, List<Map> rows,
                                          String category, Set<String> covered) {
        rows.removeIf(row -> covered.contains(coverageKey(category, userId,
                text(row.get("dateStr")), text(row.get("projectCode")))));
    }

    static String coverageKey(String category, String userId, String day, String detailKey) {
        return category + "|" + userId + "|" + day + "|" + detailKey;
    }

    private List<Map> queryModified(String formUuid, String fromDate, String toDate) {
        List<Map> all = new ArrayList<>();
        for (int page = 1; page <= 200; page++) {
            Object raw = ydClient.queryData(YDParam.builder().appType(whConf.getYidaAppType())
                    .systemToken(whConf.getYidaSystemToken()).formUuid(formUuid)
                    .modifiedFromTimeGMT(fromDate).modifiedToTimeGMT(toDate)
                    .currentPage(page).pageSize(100).build(), YDConf.FORM_QUERY.retrieve_search_form).getData();
            List<Map> data = raw instanceof List ? (List<Map>) raw : Collections.emptyList();
            all.addAll(data);
            if (data.size() < 100) break;
        }
        return all;
    }

    private List<Map> queryProcesses(String formUuid, Map<String, Object> search) {
        List<Map> all = new ArrayList<>();
        for (int page = 1; page <= 200; page++) {
            Object raw = ydClient.queryData(YDParam.builder().appType(whConf.getYidaAppType())
                    .systemToken(whConf.getYidaSystemToken()).formUuid(formUuid)
                    .searchFieldJson(JSON.toJSONString(search)).pageNumber(page).pageSize(100)
                    .build(), YDConf.FORM_QUERY.retrieve_search_process).getData();
            List<Map> data = raw instanceof List ? (List<Map>) raw : Collections.emptyList();
            all.addAll(data);
            if (data.size() < 100) break;
        }
        return all;
    }

    private String[] modifiedDateWindow(int lookbackDays) {
        int safeDays = Math.max(1, lookbackDays);
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd");
        return new String[]{LocalDate.now(ZONE).minusDays(safeDays - 1L).format(formatter),
                LocalDate.now(ZONE).plusDays(1L).format(formatter)};
    }

    private Map formData(Map item) {
        Object fd = item == null ? null : item.get("formData");
        if (!(fd instanceof Map)) fd = item == null ? null : item.get("data");
        return fd instanceof Map ? (Map) fd : (item == null ? Collections.emptyMap() : item);
    }

    private String firstUserId(Map data, String field) {
        Object value = data == null ? null : data.get(field + "_id");
        if (!(value instanceof List) || ((List) value).isEmpty()) value = data == null ? null : data.get(field);
        if (value instanceof List && !((List) value).isEmpty()) return text(((List) value).get(0));
        return text(value);
    }

    private String normalizeManagerId(String managerId) {
        return StringUtils.isBlank(managerId) ? DEFAULT_MANAGER_ID : managerId;
    }

    /**
     * 提交请求是页面当前值的完整快照；已有草稿应覆盖而不是再次累加。
     */
    static void mergeSubmittedRow(List<Map> current, Map child, String keyField,
                                  String submittedField, double hours) {
        for (Map existing : current) {
            if (text(existing.get(keyField)).equals(text(child.get(keyField)))) {
                existing.put(submittedField, hours);
                return;
            }
        }
        current.add(child);
    }

    static void applySummaryTotals(Map<String, Object> update, Map snapshot) {
        putCategoryTotals(update, snapshot, R_BIL_TABLE,
                "numberField_mmczo635", "numberField_mmczo636", "numberField_mmczo637", "numberField_mmd80zae",
                "numberField_mmacxew9", "numberField_mmacxewa", "numberField_mmacxewg", "numberField_mmad6jbc");
        putCategoryTotals(update, snapshot, R_NON_TABLE,
                "numberField_mmczo63b", "numberField_mmczo63c", "numberField_mmczo63d", "numberField_mmeakgi9",
                "numberField_mmad6jbx", "numberField_mmad6jbz", "numberField_mmad6jc1", "numberField_mmeakgia");
        putCategoryTotals(update, snapshot, R_OTHER_TABLE,
                "numberField_mmeakgik", "numberField_mmeakgij", "numberField_mmeakgii", "numberField_mmeakgim",
                "numberField_mmd1smeo", "numberField_mmd1smeq", "numberField_mmd1smes", "numberField_mmeakgic");
        update.put(R_DAILY_DRAFT, categoryTotal(snapshot, R_BIL_TABLE, "numberField_mmczo635")
                + categoryTotal(snapshot, R_NON_TABLE, "numberField_mmczo63b")
                + categoryTotal(snapshot, R_OTHER_TABLE, "numberField_mmeakgik"));
        update.put(R_DAILY_SUBMITTED, categoryTotal(snapshot, R_BIL_TABLE, "numberField_mmczo636")
                + categoryTotal(snapshot, R_NON_TABLE, "numberField_mmczo63c")
                + categoryTotal(snapshot, R_OTHER_TABLE, "numberField_mmeakgij"));
        update.put(R_DAILY_APPROVED, categoryTotal(snapshot, R_BIL_TABLE, "numberField_mmczo637")
                + categoryTotal(snapshot, R_NON_TABLE, "numberField_mmczo63d")
                + categoryTotal(snapshot, R_OTHER_TABLE, "numberField_mmeakgii"));
        update.put(R_DAILY_CHANGE, categoryTotal(snapshot, R_BIL_TABLE, "numberField_mmd80zae")
                + categoryTotal(snapshot, R_NON_TABLE, "numberField_mmeakgi9")
                + categoryTotal(snapshot, R_OTHER_TABLE, "numberField_mmeakgim"));
    }

    private static void putCategoryTotals(Map<String, Object> update, Map snapshot, String table,
                                          String draftChild, String submittedChild, String approvedChild, String changeChild,
                                          String draftMain, String submittedMain, String approvedMain, String changeMain) {
        update.put(draftMain, categoryTotal(snapshot, table, draftChild));
        update.put(submittedMain, categoryTotal(snapshot, table, submittedChild));
        update.put(approvedMain, categoryTotal(snapshot, table, approvedChild));
        update.put(changeMain, categoryTotal(snapshot, table, changeChild));
    }

    private static double categoryTotal(Map snapshot, String table, String field) {
        double total = 0d;
        for (Map row : list(snapshot.get(table))) total += num(row.get(field));
        return total;
    }

    private List<Map> copyRows(Object raw) {
        List<Map> rows = new ArrayList<>();
        for (Map row : list(raw)) rows.add(new LinkedHashMap(row));
        return rows;
    }

    private static class RepairBatch {
        private String batchId;
        private String userId;
        private String submitterName;
        private String monthText;
        private long submitDate;
        private final Map<String, Object> projectGroups = new LinkedHashMap<>();
        private final Map<String, Object> otherGroup = new LinkedHashMap<>();
    }
    private static Map<String, Object> mapOf(Object... values) { Map<String, Object> m = new LinkedHashMap<>(); for (int i=0;i<values.length;i+=2) m.put(String.valueOf(values[i]), values[i+1]); return m; }
    private static List<Map> list(Object raw) { return raw instanceof List ? (List<Map>) raw : new ArrayList<>(); }
    private static String text(Object value) { return value == null ? "" : String.valueOf(value); }
    private static double num(Object value) { try { return value == null ? 0d : Double.parseDouble(String.valueOf(value)); } catch (NumberFormatException e) { return 0d; } }
    private static double sumRows(Object raw) { double total=0d; for (Object item:list(raw)) if (item instanceof Map) total += num(((Map)item).get("hours")); return total; }
}