"""
Configuration settings for the application.
"""
from pathlib import Path

from pydantic import AnyHttpUrl, EmailStr, validator
from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    """
    Application settings.
    """
    API_V1_STR: str = "/api/v1"
    PROJECT_NAME: str = "WhatsApp Message Analytics Service"
    PROJECT_DESCRIPTION: str = "A service that processes WhatsApp messages and provides insights"
    PROJECT_VERSION: str = "0.1.0"

    # CORS configuration
    BACKEND_CORS_ORIGINS: list[str | AnyHttpUrl] = []

    @validator("BACKEND_CORS_ORIGINS", pre=True)
    def assemble_cors_origins(self, v: str | list[str]) -> list[str] | str:
        """
        Parse and validate CORS origins.
        """
        if isinstance(v, str) and not v.startswith("["):
            return [i.strip() for i in v.split(",")]
        elif isinstance(v, list | str):
            return v
        raise ValueError(v)

    # Database configuration
    DB_DIR: Path = Path("/app") / "storage" / "db"
    SQLALCHEMY_DATABASE_URL: str = f"sqlite:///{DB_DIR}/db.sqlite"

    # WhatsApp API configuration
    WHATSAPP_VERIFY_TOKEN: str = "your_verify_token"

    # Email configuration
    SMTP_TLS: bool = True
    SMTP_PORT: int | None = 587
    SMTP_HOST: str | None = "smtp.gmail.com"
    SMTP_USER: str | None = ""
    SMTP_PASSWORD: str | None = ""
    EMAILS_FROM_EMAIL: EmailStr | None = "your-email@example.com"
    EMAILS_FROM_NAME: str | None = "WhatsApp Message Analytics"
    EMAIL_RECIPIENTS: list[EmailStr] = []

    # Gemini API configuration
    GEMINI_API_KEY: str = "your_gemini_api_key"

    # Scheduler configuration
    ENABLE_SCHEDULER: bool = True
    ANALYSIS_CRON_DAY_OF_WEEK: str = "sun"  # Run on Sundays
    ANALYSIS_CRON_HOUR: int = 6  # Run at 6 AM
    ANALYSIS_CRON_MINUTE: int = 0  # Run at 0 minutes

    class Config:
        """
        Configuration for the settings class.
        """
        case_sensitive = True
        env_file = ".env"


settings = Settings()