import os
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    DATABASE_URL: str = os.getenv(
        "DATABASE_URL",
        "postgresql+asyncpg://enterprise:enterprise123@localhost:5432/enterprise_ai",
    )
    REDIS_URL: str = os.getenv("REDIS_URL", "redis://:redis123@localhost:6379/0")
    JWT_SECRET: str = os.getenv("JWT_SECRET", "dev-secret-change-me")
    JWT_ALGORITHM: str = "HS256"
    JWT_EXPIRE_MINUTES: int = 1440
    LLM_API_KEY: str = os.getenv("LLM_API_KEY", "sk-placeholder")
    LLM_API_BASE: str = os.getenv("LLM_API_BASE", "https://api.openai.com/v1")
    LLM_MODEL: str = os.getenv("LLM_MODEL", "gpt-4o-mini")

    RATE_LIMIT_PER_MINUTE: int = int(os.getenv("RATE_LIMIT_PER_MINUTE", "60"))
    RATE_LIMIT_BURST: int = int(os.getenv("RATE_LIMIT_BURST", "10"))
    UPLOAD_DIR: str = os.getenv("UPLOAD_DIR", "./uploads")
    MAX_UPLOAD_SIZE_MB: int = int(os.getenv("MAX_UPLOAD_SIZE_MB", "50"))
    WECOM_CORP_ID: str = os.getenv("WECOM_CORP_ID", "")
    WECOM_APP_SECRET: str = os.getenv("WECOM_APP_SECRET", "")
    WECOM_TOKEN: str = os.getenv("WECOM_TOKEN", "")
    WECOM_AES_KEY: str = os.getenv("WECOM_AES_KEY", "")
    METRICS_COLLECTION_INTERVAL: int = 60


settings = Settings()