init

config/settings.py

@@ -1,34 +1,58 @@
 import os
 import configparser
 from typing import Optional
+from pathlib import Path
 
 
 class Config:
     """从 config.ini 读取的应用配置"""
 
     _config = configparser.ConfigParser()
-    _root_dir = os.path.dirname(os.path.dirname(__file__))
-    _config_path = os.path.join(_root_dir, 'config', 'config.ini')
-
-    # 在类初始化时加载配置
-    if not os.path.exists(_config_path):
-        raise FileNotFoundError(
-            f"Configuration file not found at: {_config_path}. "
-            "Please copy 'config/config.ini.example' to 'config/config.ini' and fill in your details."
-        )
-
-    try:
-        with open(_config_path, "r", encoding="utf-8") as f:
-            _config.read_file(f)
-    except UnicodeDecodeError:
-        with open(_config_path, "r", encoding="gbk") as f:
-            _config.read_file(f)
-
-    # 通用设置
-    DEFAULT_MODEL_SECTION: str = _config.get('General', 'DEFAULT_MODEL_SECTION', fallback='gpt-4o')
-    MAX_RETRIES: int = _config.getint('General', 'MAX_RETRIES', fallback=3)
-    TIMEOUT: int = _config.getint('General', 'TIMEOUT', fallback=30)
-
+    _config_loaded = False
+    DEFAULT_MODEL_SECTION = "gpt-4o"
+    MAX_RETRIES = 3
+    TIMEOUT = 30
+    CONVERSATION_MAX_HISTORY_MESSAGES = 10
+    CONVERSATION_ENABLE_MULTI_TURN = False
+    CONVERSATION_ENABLE_COMPRESSION = False
+    CONVERSATION_COMPRESSION_THRESHOLD = 8
+    
+    @classmethod
+    def _get_config_path(cls) -> Path:
+        """获取配置文件路径（支持环境变量覆盖）"""
+        env_path = os.getenv("CONFIG_PATH")
+        if env_path:
+            return Path(env_path)
+        
+        project_root = Path(__file__).parent.parent
+        return project_root / 'config' / 'config.ini'
+    
+    @classmethod
+    def _load_config(cls):
+        """懒加载配置"""
+        if cls._config_loaded:
+            return
+        
+        config_path = cls._get_config_path()
+        
+        if not config_path.exists():
+            raise FileNotFoundError(
+                f"Configuration file not found at: {config_path}. "
+                "Please copy 'config/config.ini.example' to 'config/config.ini' and fill in your details."
+            )
+        
+        with open(config_path, "r", encoding="utf-8") as f:
+            cls._config.read_file(f)
+        
+        cls._config_loaded = True
+    
+    @classmethod
+    def reload(cls):
+        """重新加载配置（支持热重载）"""
+        cls._config_loaded = False
+        cls._load_config()
+        _refresh_runtime_constants()
+    
     @classmethod
     def get_model_config(cls, section: Optional[str] = None) -> dict:
         """
@@ -71,6 +95,47 @@ class Config:
             raise ValueError(f"Configuration validation failed: {e}")
 
 
+DEFAULT_MODEL_SECTION = Config.DEFAULT_MODEL_SECTION
+MAX_RETRIES = Config.MAX_RETRIES
+TIMEOUT = Config.TIMEOUT
+CONVERSATION_MAX_HISTORY_MESSAGES = Config.CONVERSATION_MAX_HISTORY_MESSAGES
+CONVERSATION_ENABLE_MULTI_TURN = Config.CONVERSATION_ENABLE_MULTI_TURN
+CONVERSATION_ENABLE_COMPRESSION = Config.CONVERSATION_ENABLE_COMPRESSION
+CONVERSATION_COMPRESSION_THRESHOLD = Config.CONVERSATION_COMPRESSION_THRESHOLD
+
+
+def _refresh_runtime_constants() -> None:
+    """同步模块级常量与 Config 类属性，兼容两种访问方式。"""
+    global DEFAULT_MODEL_SECTION
+    global MAX_RETRIES
+    global TIMEOUT
+    global CONVERSATION_MAX_HISTORY_MESSAGES
+    global CONVERSATION_ENABLE_MULTI_TURN
+    global CONVERSATION_ENABLE_COMPRESSION
+    global CONVERSATION_COMPRESSION_THRESHOLD
+
+    DEFAULT_MODEL_SECTION = Config._config.get('General', 'DEFAULT_MODEL_SECTION', fallback='gpt-4o')
+    MAX_RETRIES = Config._config.getint('General', 'MAX_RETRIES', fallback=3)
+    TIMEOUT = Config._config.getint('General', 'TIMEOUT', fallback=30)
+    CONVERSATION_MAX_HISTORY_MESSAGES = Config._config.getint('conversation', 'max_history_messages', fallback=10)
+    CONVERSATION_ENABLE_MULTI_TURN = Config._config.getboolean('conversation', 'enable_multi_turn', fallback=False)
+    CONVERSATION_ENABLE_COMPRESSION = Config._config.getboolean('conversation', 'enable_memory_compression', fallback=False)
+    CONVERSATION_COMPRESSION_THRESHOLD = Config._config.getint('conversation', 'compression_threshold', fallback=8)
+
+    Config.DEFAULT_MODEL_SECTION = DEFAULT_MODEL_SECTION
+    Config.MAX_RETRIES = MAX_RETRIES
+    Config.TIMEOUT = TIMEOUT
+    Config.CONVERSATION_MAX_HISTORY_MESSAGES = CONVERSATION_MAX_HISTORY_MESSAGES
+    Config.CONVERSATION_ENABLE_MULTI_TURN = CONVERSATION_ENABLE_MULTI_TURN
+    Config.CONVERSATION_ENABLE_COMPRESSION = CONVERSATION_ENABLE_COMPRESSION
+    Config.CONVERSATION_COMPRESSION_THRESHOLD = CONVERSATION_COMPRESSION_THRESHOLD
+
+
+# 在类定义完成后加载配置
+Config._load_config()
+_refresh_runtime_constants()
+
+
 # 如有需要可在导入时做初始校验，
 # 但已移到 main.py 以便更可控地执行。
 # 如需在导入时校验，可在此调用 Config.validate_config()