from __future__ import annotations

from pydantic import Field
from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    """
    Centralized configuration loaded from environment variables.
    `.env` is supported for local development.
    """

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

    # OpenAI
    openai_api_key: str = Field(default="", alias="OPENAI_API_KEY")
    openai_model: str = Field(default="gpt-4o-mini", alias="OPENAI_MODEL")

    # Email
    email_user: str = Field(default="", alias="EMAIL_USER")
    email_pass: str = Field(default="", alias="EMAIL_PASS")

    imap_server: str = Field(default="", alias="IMAP_SERVER")
    imap_port: int = Field(default=993, alias="IMAP_PORT")
    imap_folder: str = Field(default="INBOX", alias="IMAP_FOLDER")

    smtp_server: str = Field(default="", alias="SMTP_SERVER")
    smtp_port: int = Field(default=587, alias="SMTP_PORT")
    smtp_use_tls: bool = Field(default=True, alias="SMTP_USE_TLS")
    smtp_use_ssl: bool = Field(default=False, alias="SMTP_USE_SSL")

    # App
    app_host: str = Field(default="127.0.0.1", alias="APP_HOST")
    app_port: int = Field(default=8000, alias="APP_PORT")
    log_level: str = Field(default="INFO", alias="LOG_LEVEL")

    # Storage
    sqlite_path: str = Field(default="database/db.sqlite3", alias="SQLITE_PATH")


settings = Settings()