编写后端

backend/app/core/config.py

@@ -0,0 +1,67 @@
+"""
+应用配置模块
+使用 Pydantic Settings 管理环境变量
+"""
+from pydantic_settings import BaseSettings
+from functools import lru_cache
+
+
+class Settings(BaseSettings):
+    """应用配置类"""
+
+    # 应用基础配置
+    APP_NAME: str = "ACG Blog"
+    APP_VERSION: str = "0.1.0"
+    DEBUG: bool = True
+
+    # 数据库配置
+    DB_HOST: str = "localhost"
+    DB_PORT: int = 5432
+    DB_USER: str = "postgres"
+    DB_PASSWORD: str = "postgres"
+    DB_NAME: str = "acg_blog"
+
+    # Redis 配置
+    REDIS_HOST: str = "localhost"
+    REDIS_PORT: int = 6379
+    REDIS_DB: int = 0
+
+    # JWT 配置
+    SECRET_KEY: str = "your-secret-key-change-in-production"
+    ALGORITHM: str = "HS256"
+    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
+    REFRESH_TOKEN_EXPIRE_DAYS: int = 7
+
+    # CORS 配置
+    BACKEND_CORS_ORIGINS: list[str] = [
+        "http://localhost:5173",
+        "http://localhost:3000",
+    ]
+
+    @property
+    def DATABASE_URL(self) -> str:
+        """生成数据库连接 URL"""
+        return f"postgres://{self.DB_USER}:{self.DB_PASSWORD}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"
+
+    @property
+    def DATABASE_URL_ASYNC(self) -> str:
+        """生成异步数据库连接 URL"""
+        return f"asyncpg://{self.DB_USER}:{self.DB_PASSWORD}@{self.DB_HOST}:{self.DB_PORT}/{self.DB_NAME}"
+
+    @property
+    def REDIS_URL(self) -> str:
+        """生成 Redis 连接 URL"""
+        return f"redis://{self.REDIS_HOST}:{self.REDIS_PORT}/{self.REDIS_DB}"
+
+    class Config:
+        env_file = ".env"
+        case_sensitive = True
+
+
+@lru_cache()
+def get_settings() -> Settings:
+    """获取配置单例"""
+    return Settings()
+
+
+settings = get_settings()