Feat:增加SSE新帖推送

api_server.py

@@ -1,4 +1,4 @@
-from flask import Flask, request, jsonify, abort
+from flask import Flask, request, jsonify, abort, Response
 from flask_sqlalchemy import SQLAlchemy
 from datetime import datetime, timezone
 from flask_cors import CORS
@@ -9,6 +9,9 @@ from werkzeug.utils import secure_filename
 import os
 import shutil
 import hashlib
+import queue
+import time
+import threading
 
 # === Flask 初始化 ===
 app = Flask(__name__)
@@ -135,6 +138,19 @@ CONFIG = {}
 INIT = False
 NEED_AUDIT = False
 
+# === SSE 相关变量 ===
+sse_clients = []  # 存储所有 SSE 客户端的队列列表
+sse_lock = threading.Lock()  # 保护 sse_clients 的线程锁
+
+def notify_new_post():
+    """通知所有 SSE 客户端有新的审核通过的投稿"""
+    with sse_lock:
+        for client_queue in sse_clients:
+            try:
+                client_queue.put("new_post")
+            except Exception:
+                pass
+
 # 运行时使用的变量，初始为默认值
 ADMIN_TOKEN_HASH = DEFAULT_ADMIN_TOKEN_HASH
 UPLOAD_FOLDER = DEFAULT_UPLOAD_FOLDER
@@ -400,6 +416,36 @@ def require_admin(func):
     return wrapper
 
 # === 路由 ===
+@app.route('/stream', methods=['GET'])
+def stream():
+    """SSE 端点：推送新投稿通知和心跳"""
+    def event_stream():
+        # 为当前客户端创建一个队列
+        client_queue = queue.Queue()
+
+        # 将队列注册到全局客户端列表
+        with sse_lock:
+            sse_clients.append(client_queue)
+
+        try:
+            while True:
+                try:
+                    # 尝试从队列获取消息，超时 15 秒（心跳间隔）
+                    message = client_queue.get(timeout=15)
+                    # 发送新投稿通知
+                    yield f"data: {message}\n\n"
+                except queue.Empty:
+                    # 超时则发送心跳
+                    yield "data: heartbeat\n\n"
+        except GeneratorExit:
+            # 客户端断开连接时清理
+            with sse_lock:
+                if client_queue in sse_clients:
+                    sse_clients.remove(client_queue)
+
+    return Response(event_stream(), mimetype='text/event-stream')
+
+
 @app.route('/post', methods=['POST'])
 def submit_post():
     guard = guard_rate_limit()
@@ -429,6 +475,10 @@ def submit_post():
     db.session.add(submission)
     db.session.commit()
 
+    # 如果直接通过（关闭审核），通知 SSE 客户端
+    if status == "Pass":
+        notify_new_post()
+
     return jsonify({"id": submission.id, "status": submission.status}), 201
 
 @app.route('/up', methods=['POST'])
@@ -864,6 +914,8 @@ def admin_approve():
         return jsonify({"status": "Fail", "reason": "Value ID not found"}), 400
     success, reason = admin_change_status(data["id"], "Pending", "Pass")
     if success:
+        # 审核通过，通知 SSE 客户端
+        notify_new_post()
         return jsonify({"status": "OK"})
     else:
         return jsonify({"status": "Fail", "reason": reason})