"""Configuration module"""
import os
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    """Application settings"""
    PROJECT_NAME: str = "Employee Request System"
    API_V1_STR: str = "/api"
    
    # Database
    POSTGRES_USER: str = os.getenv("POSTGRES_USER", "postgres")
    POSTGRES_PASSWORD: str = os.getenv("POSTGRES_PASSWORD", "postgres")
    POSTGRES_HOST: str = os.getenv("POSTGRES_HOST", "localhost")
    POSTGRES_PORT: str = os.getenv("POSTGRES_PORT", "5432")
    POSTGRES_DB: str = os.getenv("POSTGRES_DB", "app")
    
    # JWT
    SECRET_KEY: str = os.getenv("SECRET_KEY", "your-secret-key-super-secret")
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
    
    # Redis
    REDIS_HOST: str = os.getenv("REDIS_HOST", "localhost")
    REDIS_PORT: int = int(os.getenv("REDIS_PORT", "6379"))
    REDIS_DB: int = int(os.getenv("REDIS_DB", "0"))
    
    # Telegram
    TELEGRAM_BOT_TOKEN: str = os.getenv("TELEGRAM_BOT_TOKEN", "")
    TELEGRAM_CHAT_ID: str = os.getenv("TELEGRAM_CHAT_ID", "")
    
    model_config = {
        "case_sensitive": True,
        "env_file": ".env",
        "extra": "allow"
    }

    def get_database_url(self) -> str:
        """Get database URL"""
        return os.getenv(
            "DATABASE_URL",
            f"postgresql://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
        )

settings = Settings()