"""
Application configuration settings.
Loads configuration from environment variables with sensible defaults.
"""
from pydantic_settings import BaseSettings
from typing import Optional


class Settings(BaseSettings):
    """Application settings loaded from environment variables."""

    # Database configuration
    POSTGRES_HOST: str = "postgres"
    POSTGRES_PORT: int = 5432
    POSTGRES_DB: str = "fidelitytracker"
    POSTGRES_USER: str = "fidelity"
    POSTGRES_PASSWORD: str = "fidelity123"

    # API configuration
    API_V1_PREFIX: str = "/api"
    PROJECT_NAME: str = "myFidelityTracker"

    # CORS configuration - allow all origins for local development
    CORS_ORIGINS: str = "*"

    @property
    def cors_origins_list(self) -> list[str]:
        """Parse CORS origins from comma-separated string."""
        if self.CORS_ORIGINS == "*":
            return ["*"]
        return [origin.strip() for origin in self.CORS_ORIGINS.split(",")]

    # File import configuration
    IMPORT_DIR: str = "/app/imports"

    # Market data cache TTL (seconds)
    MARKET_DATA_CACHE_TTL: int = 60

    @property
    def database_url(self) -> str:
        """Construct PostgreSQL database URL."""
        return (
            f"postgresql://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}"
            f"@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
        )

    class Config:
        env_file = ".env"
        case_sensitive = True


# Global settings instance
settings = Settings()