"""Application configuration."""
import os
from functools import lru_cache
from pydantic_settings import BaseSettings

class Settings(BaseSettings):
    # App
    APP_NAME: str = "JIRA AI Fixer"
    APP_VERSION: str = "2.0.0"
    DEBUG: bool = False
    SECRET_KEY: str = os.getenv("SECRET_KEY", "change-me-in-production-use-openssl-rand-hex-32")
    
    # Database
    DATABASE_URL: str = os.getenv("DATABASE_URL", "postgresql://postgres:postgres@postgres_database:5432/jira_fixer_v2")
    
    # Redis
    REDIS_URL: str = os.getenv("REDIS_URL", "redis://redis_redis:6379/0")
    
    # JWT
    JWT_SECRET: str = os.getenv("JWT_SECRET", "jwt-secret-change-in-production")
    JWT_ALGORITHM: str = "HS256"
    JWT_EXPIRE_MINUTES: int = 60 * 24  # 24 hours
    JWT_REFRESH_DAYS: int = 7
    
    # Email (Resend)
    RESEND_API_KEY: str = os.getenv("RESEND_API_KEY", "")
    EMAIL_FROM: str = os.getenv("EMAIL_FROM", "JIRA AI Fixer <noreply@startdata.com.br>")
    
    # External APIs
    OPENROUTER_API_KEY: str = os.getenv("OPENROUTER_API_KEY", "")
    GITEA_URL: str = os.getenv("GITEA_URL", "https://gitea.startdata.com.br")
    GITEA_TOKEN: str = os.getenv("GITEA_TOKEN", "")
    
    # OAuth (for integrations)
    JIRA_CLIENT_ID: str = os.getenv("JIRA_CLIENT_ID", "")
    JIRA_CLIENT_SECRET: str = os.getenv("JIRA_CLIENT_SECRET", "")
    GITHUB_CLIENT_ID: str = os.getenv("GITHUB_CLIENT_ID", "")
    GITHUB_CLIENT_SECRET: str = os.getenv("GITHUB_CLIENT_SECRET", "")
    
    class Config:
        env_file = ".env"

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

settings = get_settings()