Initial commit: 网页联机狼人杀（FastAPI+WebSocket 后端 / React+TS+Sass 前端）

backend/app/config.py

@@ -0,0 +1,67 @@
+"""配置加载：backend/config.json（可从 config.example.json 复制修改）。
+
+未配置 api_key 时，AI 玩家自动回退为内置启发式 AI，游戏依然完整可玩。
+支持环境变量覆盖：WEREWOLF_LLM_BASE_URL / WEREWOLF_LLM_API_KEY / WEREWOLF_LLM_MODEL。
+"""
+from __future__ import annotations
+
+import json
+import os
+from dataclasses import dataclass, field
+from pathlib import Path
+
+BACKEND_DIR = Path(__file__).resolve().parent.parent
+CONFIG_PATH = BACKEND_DIR / "config.json"
+EXAMPLE_PATH = BACKEND_DIR / "config.example.json"
+
+
+@dataclass
+class LLMConfig:
+    base_url: str = ""
+    api_key: str = ""
+    model: str = ""
+    temperature: float = 0.8
+
+    @property
+    def configured(self) -> bool:
+        return bool(self.base_url and self.api_key and self.model)
+
+
+@dataclass
+class ServerConfig:
+    host: str = "0.0.0.0"
+    port: int = 8000
+
+
+@dataclass
+class AppConfig:
+    llm: LLMConfig = field(default_factory=LLMConfig)
+    server: ServerConfig = field(default_factory=ServerConfig)
+
+
+def load_config() -> AppConfig:
+    cfg = AppConfig()
+    source = CONFIG_PATH
+    if not source.exists() and EXAMPLE_PATH.exists():
+        source = EXAMPLE_PATH
+    if source.exists():
+        try:
+            raw = json.loads(source.read_text(encoding="utf-8"))
+        except (json.JSONDecodeError, OSError):
+            raw = {}
+        llm = raw.get("llm", {})
+        cfg.llm.base_url = llm.get("base_url", cfg.llm.base_url)
+        cfg.llm.api_key = llm.get("api_key", cfg.llm.api_key)
+        cfg.llm.model = llm.get("model", cfg.llm.model)
+        cfg.llm.temperature = float(llm.get("temperature", cfg.llm.temperature))
+        srv = raw.get("server", {})
+        cfg.server.host = srv.get("host", cfg.server.host)
+        cfg.server.port = int(srv.get("port", cfg.server.port))
+
+    cfg.llm.base_url = os.environ.get("WEREWOLF_LLM_BASE_URL", cfg.llm.base_url).strip()
+    cfg.llm.api_key = os.environ.get("WEREWOLF_LLM_API_KEY", cfg.llm.api_key).strip()
+    cfg.llm.model = os.environ.get("WEREWOLF_LLM_MODEL", cfg.llm.model).strip()
+    return cfg
+
+
+CONFIG = load_config()