feat(G1,P16A,P16B): 收口主数据核心与节假日日历增强

server/src/routes/leave.js

@@ -3,9 +3,11 @@ const { z } = require("zod");
 const { AppError } = require("../utils/AppError");
 const { sendData } = require("../utils/reply");
 const { resolveActionableStep } = require("../utils/workflow");
+const { FEATURE_FLAG_KEYS, evaluateFeatureFlag } = require("../services/featureFlags");
 const {
   DEFAULT_ATTACHMENT_MIME_TYPES,
   calculateRequestedDays,
+  calculateRequestedDaysByWorkingCalendar,
   createLeaveLedgerEntry,
   formatDateOnly,
   leaveRangesOverlap,
@@ -165,6 +167,61 @@ function parseCreateBody(body) {
   };
 }
 
+async function resolveRequestedDaysForCreate(fastify, employee, body) {
+  if (!employee?.legal_entity_id) {
+    return body.requestedDays;
+  }
+
+  const featureFlag = await evaluateFeatureFlag({
+    prisma: fastify.prisma,
+    config: fastify.config,
+    flagKey: FEATURE_FLAG_KEYS.leaveHolidayCalendar,
+    departmentId: employee.department_id ?? null,
+    strictDepartment: false,
+  });
+
+  if (!featureFlag.enabled) {
+    return body.requestedDays;
+  }
+
+  const legalEntity = await fastify.prisma.legalEntity.findUnique({
+    where: { id: employee.legal_entity_id },
+    select: {
+      default_holiday_calendar: {
+        select: {
+          id: true,
+          archived_at: true,
+          days: {
+            where: {
+              date: {
+                gte: body.startDate,
+                lte: body.endDate,
+              },
+            },
+            select: {
+              date: true,
+              day_type: true,
+            },
+          },
+        },
+      },
+    },
+  });
+
+  const calendar = legalEntity?.default_holiday_calendar;
+  if (!calendar || calendar.archived_at) {
+    return body.requestedDays;
+  }
+
+  return calculateRequestedDaysByWorkingCalendar({
+    startDate: body.startDate,
+    endDate: body.endDate,
+    startSession: body.startSession,
+    endSession: body.endSession,
+    calendarDays: calendar.days,
+  });
+}
+
 async function collectCreatePayload(request) {
   if (typeof request.isMultipart === "function" && request.isMultipart()) {
     const fields = {};
@@ -428,6 +485,8 @@ async function leaveRoutes(fastify) {
         request.employee.id,
       );
 
+      const requestedDays = await resolveRequestedDaysForCreate(fastify, request.employee, body);
+
       const leave = await fastify.prisma.leaveRequest.create({
         data: {
           owner_id: request.employee.id,
@@ -437,7 +496,7 @@ async function leaveRoutes(fastify) {
           end_date: body.endDate,
           start_session: body.startSession,
           end_session: body.endSession,
-          requested_days: body.requestedDays,
+          requested_days: requestedDays,
           reason: body.reason,
           attachment_storage_path: attachment?.storagePath ?? null,
           attachment_original_name: attachment?.originalName ?? null,