Add site notice and timestamp display updates

back/main.py

@@ -97,6 +97,15 @@ class ImgFile(db.Model):
     name = db.Column(db.String(255), nullable=True)
     identity_token = db.Column(db.String(36), nullable=True)
 
+class SiteNotice(db.Model):
+    __tablename__ = 'site_notice'
+    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
+    type = db.Column(db.String(10), default='md', nullable=False)
+    content = db.Column(db.Text, default='', nullable=False)
+    version = db.Column(db.Integer, default=0, nullable=False)
+    created_at = db.Column(db.DateTime, default=lambda: datetime.now())
+    updated_at = db.Column(db.DateTime, default=lambda: datetime.now(), onupdate=datetime.now)
+
 # 初始化数据库函数
 def init_db():
     if not os.path.exists('./data'):
@@ -105,6 +114,14 @@ def init_db():
         os.makedirs(IMG_DIR)
     with app.app_context():
         db.create_all()
+        try:
+            existing = SiteNotice.query.first()
+            if not existing:
+                n = SiteNotice(type='md', content='', version=0)
+                db.session.add(n)
+                db.session.commit()
+        except Exception:
+            db.session.rollback()
 
 def load_config():
     global NEED_AUDIT, FILE_SIZE_LIMIT_MB, FILE_FORMATS
@@ -180,6 +197,23 @@ def get_about():
             "data": "# 默认关于页面\n关于页面未设置，请前往管理面板操作。"
         })
 
+@app.route('/api/site_notice', methods=['GET'])
+def get_site_notice():
+    try:
+        notice = SiteNotice.query.order_by(SiteNotice.id.asc()).first()
+        if not notice:
+            notice = SiteNotice(type='md', content='', version=0)
+            db.session.add(notice)
+            db.session.commit()
+        data = {
+            "type": notice.type if notice.type in ['md', 'url'] else 'md',
+            "content": notice.content or '',
+            "version": int(notice.version or 0),
+        }
+        return jsonify({"code": 1000, "data": data})
+    except Exception as e:
+        return jsonify({"code": 2003, "data": str(e)})
+
 @app.route('/api/get_id_token', methods=['GET'])
 def get_id_token():
     try: