feat: improve llm settings ui and douyu daily fallback

admin/dashboard/blueprints/system.py

@@ -19,6 +19,24 @@ system_bp = Blueprint('system', __name__)
 APP_START_TIME = time.time()
 
 
+def _system_config_path() -> str:
+    return os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'config.yaml'))
+
+
+def _load_system_yaml() -> dict:
+    config_path = _system_config_path()
+    if not os.path.exists(config_path):
+        return {}
+    with open(config_path, 'r', encoding='utf-8') as f:
+        return yaml.safe_load(f) or {}
+
+
+def _save_system_yaml(config_obj: dict) -> None:
+    config_path = _system_config_path()
+    with open(config_path, 'w', encoding='utf-8') as f:
+        yaml.safe_dump(config_obj, f, allow_unicode=True, sort_keys=False)
+
+
 @system_bp.route('/api_docs')
 @login_required
 def api_docs():
@@ -162,7 +180,7 @@ def get_current_user_info():
 def get_system_config_raw():
     try:
         server = current_app.dashboard_server
-        config_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'config.yaml'))
+        config_path = _system_config_path()
         with open(config_path, 'r', encoding='utf-8') as f:
             config_text = f.read()
         robot_config = getattr(getattr(server, "robot", None), "config", None)
@@ -190,7 +208,7 @@ def update_system_config():
             return jsonify({"success": False, "message": "缺少配置内容"}), 400
 
         yaml.safe_load(config_text)
-        config_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..', 'config.yaml'))
+        config_path = _system_config_path()
         with open(config_path, 'w', encoding='utf-8') as f:
             f.write(config_text)
 
@@ -203,6 +221,84 @@ def update_system_config():
         return jsonify({"success": False, "message": str(e)}), 500
 
 
+@system_bp.route('/api/system/llm_config', methods=['GET'])
+@login_required
+def get_system_llm_config():
+    try:
+        config_obj = _load_system_yaml()
+        llm_config = config_obj.get("llm", {}) or {}
+        backends = llm_config.get("backends", {}) or {}
+        backend_list = []
+        for name, backend in backends.items():
+            if not isinstance(backend, dict):
+                continue
+            item = dict(backend)
+            item["name"] = name
+            backend_list.append(item)
+        backend_list.sort(key=lambda item: item.get("name", ""))
+        return jsonify({
+            "success": True,
+            "data": {
+                "default_backend": llm_config.get("default_backend", ""),
+                "backends": backend_list,
+                "config_path": _system_config_path(),
+            }
+        })
+    except Exception as e:
+        logger.error(f"读取全局 LLM 配置失败: {e}")
+        return jsonify({"success": False, "message": str(e)}), 500
+
+
+@system_bp.route('/api/system/llm_config', methods=['POST'])
+@login_required
+def update_system_llm_config():
+    try:
+        server = current_app.dashboard_server
+        data = request.get_json() or {}
+        default_backend = str(data.get("default_backend") or "").strip()
+        backend_list = data.get("backends", []) or []
+        if not isinstance(backend_list, list):
+            return jsonify({"success": False, "message": "backends 格式不正确"}), 400
+
+        normalized_backends = {}
+        for raw in backend_list:
+            if not isinstance(raw, dict):
+                continue
+            name = str(raw.get("name") or "").strip()
+            if not name:
+                continue
+            item = {}
+            for key, value in raw.items():
+                if key == "name":
+                    continue
+                if value is None:
+                    continue
+                if isinstance(value, str):
+                    value = value.strip()
+                    if value == "":
+                        continue
+                item[key] = value
+            normalized_backends[name] = item
+
+        if default_backend and default_backend not in normalized_backends:
+            return jsonify({"success": False, "message": "默认后端不存在"}), 400
+
+        config_obj = _load_system_yaml()
+        config_obj["llm"] = {
+            "default_backend": default_backend,
+            "backends": normalized_backends,
+        }
+        _save_system_yaml(config_obj)
+
+        if getattr(server, "robot", None) and getattr(server.robot, "config", None):
+            server.robot.config.reload()
+
+        return jsonify({"success": True, "message": "全局 LLM 配置已保存"})
+    except Exception as e:
+        logger.error(f"保存全局 LLM 配置失败: {e}")
+        return jsonify({"success": False, "message": str(e)}), 500
+
+
 @system_bp.route('/api/restart_service', methods=['POST'])
 @login_required
 def restart_service():