项目概览、参与者管理初步优化（未接入真实数据）

backend/app/crud/subject.py

@@ -6,6 +6,8 @@ from sqlalchemy import select, update as sa_update
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.crud import visit as visit_crud
+from app.models.study import Study
+from app.models.visit import Visit
 from app.models.site import Site
 from app.models.subject import Subject
 from app.schemas.subject import SubjectCreate, SubjectUpdate
@@ -26,6 +28,7 @@ async def create_subject(db: AsyncSession, study_id: uuid.UUID, subject_in: Subj
         subject_no=subject_in.subject_no,
         status="SCREENING",
         screening_date=subject_in.screening_date,
+        consent_date=subject_in.consent_date,
         enrollment_date=None,
         completion_date=None,
         drop_reason=None,
@@ -41,7 +44,6 @@ async def create_subject(db: AsyncSession, study_id: uuid.UUID, subject_in: Subj
         visit_in=None,
         subject=subject,
         visit_code="V0",
-        visit_name="Screening",
         planned_date=subject.screening_date,
     )
     return subject
@@ -74,25 +76,44 @@ async def generate_default_visits(db: AsyncSession, subject: Subject) -> None:
     # Baseline + Follow-up visits based on enrollment_date
     if not subject.enrollment_date:
         return
+    result = await db.execute(select(Study).where(Study.id == subject.study_id))
+    study = result.scalar_one_or_none()
+    if not study:
+        return
+
+    visit_total = study.visit_total or 3
+    visit_interval_days = study.visit_interval_days or 30
+    window_start_offset = study.visit_window_start_offset
+    window_end_offset = study.visit_window_end_offset
     baseline_date = subject.enrollment_date
-    follow1 = baseline_date + timedelta(days=30)
-    follow2 = baseline_date + timedelta(days=60)
-    visits_data = [
-        ("V1", "Baseline", baseline_date),
-        ("FU1", "Follow-up 1", follow1),
-        ("FU2", "Follow-up 2", follow2),
-    ]
-    for code, name, plan_date in visits_data:
+
+    result = await db.execute(select(Visit.visit_code).where(Visit.subject_id == subject.id))
+    existing_codes = {row[0] for row in result.all()}
+    if "V1" not in existing_codes:
+        window_start = baseline_date + timedelta(days=window_start_offset) if window_start_offset is not None else None
+        window_end = baseline_date + timedelta(days=window_end_offset) if window_end_offset is not None else None
         await visit_crud.create_visit(
             db,
             study_id=subject.study_id,
             visit_in=None,
             subject=subject,
-            visit_code=code,
-            visit_name=name,
-            planned_date=plan_date,
+            visit_code="V1",
+            planned_date=baseline_date,
+            window_start=window_start,
+            window_end=window_end,
         )
 
+    await visit_crud.create_followup_visits(
+        db,
+        study_id=subject.study_id,
+        subject=subject,
+        base_date=baseline_date,
+        visit_total=visit_total,
+        visit_interval_days=visit_interval_days,
+        window_start_offset=window_start_offset,
+        window_end_offset=window_end_offset,
+    )
+
 
 async def update_subject(db: AsyncSession, subject: Subject, subject_in: SubjectUpdate) -> Subject:
     update_data = subject_in.model_dump(exclude_unset=True)