from functools import lru_cache

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    app_name: str = "Agmail API"
    environment: str = "development"
    api_prefix: str = "/api/v1"
    cors_origins: list[str] = ["http://localhost:5173"]

    database_url: str = (
        "postgresql+asyncpg://agmail:agmail_dev_password"
        "@localhost:5432/agmail_profiles"
    )
    mongo_url: str = (
        "mongodb://agmail:agmail_dev_password@localhost:27017"
        "/?authSource=admin"
    )
    mongo_database: str = "agmail_messages"
    jwt_secret: str = "replace-this-development-secret"
    access_token_minutes: int = 60

    platform_domain: str = "gentic.email"
    platform_spf_include: str = "_spf.gentic.email"
    app_public_host: str = "gentic.email"
    dkim_selector: str = "agmail"

    # Outbound via self-hosted Postfix (Docker service `smtp` by default)
    smtp_host: str = "smtp"
    smtp_port: int = 25
    smtp_public_host: str = "mail.gentic.email"
    smtp_username: str = ""
    smtp_password: str = ""
    smtp_use_tls: bool = False
    smtp_timeout: int = 30
    smtp_health_required: bool = False
    relay_domains_file: str = "/data/relay_domains/domains.list"

    inbound_smtp_enabled: bool = True
    inbound_smtp_host: str = "127.0.0.1"
    inbound_smtp_port: int = 2525
    inbound_allowed_cidrs: list[str] = [
        "127.0.0.0/8",
        "10.0.0.0/8",
        "172.16.0.0/12",
        "192.168.0.0/16",
    ]
    inbound_max_bytes: int = 25 * 1024 * 1024
    gcs_raw_mime_bucket: str = ""
    gcs_raw_mime_prefix: str = "raw"
    gcs_project: str | None = None

    dns_setup_username: str = "smtp-credentia"
    dns_setup_password: str = "Nishtha#01"

    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )


@lru_cache
def get_settings() -> Settings:
    return Settings()