from pydantic import Field, field_validator
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        case_sensitive=False,
        extra="ignore",
    )

    app_name: str = "VPN Control Panel"
    debug: bool = False
    port: int = 8000

    postgres_user: str = Field(default="vpn", alias="POSTGRES_USER")
    postgres_password: str = Field(default="vpn_secret", alias="POSTGRES_PASSWORD")
    postgres_db: str = Field(default="vpn_control", alias="POSTGRES_DB")
    postgres_host: str = Field(default="localhost", alias="POSTGRES_HOST")
    postgres_port: int = Field(default=5432, alias="POSTGRES_PORT")

    @property
    def database_url(self) -> str:
        return (
            f"postgresql+asyncpg://{self.postgres_user}:{self.postgres_password}"
            f"@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}"
        )

    @property
    def database_url_sync(self) -> str:
        return (
            f"postgresql://{self.postgres_user}:{self.postgres_password}"
            f"@{self.postgres_host}:{self.postgres_port}/{self.postgres_db}"
        )

    redis_url: str = "redis://localhost:6379/0"

    bot_token: str = ""
    admin_ids: list[int] = Field(default_factory=list)
    admin_group_id: int = 0
    admin_group_thread_id: int | None = None

    jwt_secret: str = "change_me"
    jwt_algorithm: str = "HS256"
    jwt_access_expire_minutes: int = 30
    jwt_refresh_expire_days: int = 30

    outline_api_prefix: str = ""
    outline_cert_sha256: str = ""

    @field_validator("admin_group_thread_id", mode="before")
    @classmethod
    def _parse_admin_thread(cls, v):
        if v == "" or v is None:
            return None
        return int(v)


settings = Settings()