from pydantic_settings import BaseSettings
from typing import Optional


class Settings(BaseSettings):
    # App
    PROJECT_NAME: str = "Новая Планета API"
    VERSION: str = "1.0.0"
    API_V1_STR: str = "/api/v1"
    DEBUG: bool = False
    
    # Security
    SECRET_KEY: str
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 30
    REFRESH_TOKEN_EXPIRE_DAYS: int = 7
    
    # Database
    POSTGRES_USER: str
    POSTGRES_PASSWORD: str
    POSTGRES_DB: str
    POSTGRES_HOST: str = "localhost"
    POSTGRES_PORT: int = 5432
    DATABASE_URL: Optional[str] = None
    
    @property
    def database_url(self) -> str:
        if self.DATABASE_URL:
            return self.DATABASE_URL
        return f"postgresql+asyncpg://{self.POSTGRES_USER}:{self.POSTGRES_PASSWORD}@{self.POSTGRES_HOST}:{self.POSTGRES_PORT}/{self.POSTGRES_DB}"
    
    # Redis
    REDIS_HOST: str = "localhost"
    REDIS_PORT: int = 6379
    REDIS_DB: int = 0
    REDIS_URL: Optional[str] = None
    
    @property
    def redis_url(self) -> str:
        if self.REDIS_URL:
            return self.REDIS_URL
        return f"redis://{self.REDIS_HOST}:{self.REDIS_PORT}/{self.REDIS_DB}"
    
    # Storage (MinIO/S3)
    STORAGE_ENDPOINT: str = "localhost:9000"
    STORAGE_ACCESS_KEY: str
    STORAGE_SECRET_KEY: str
    STORAGE_BUCKET: str = "new-planet-images"
    STORAGE_USE_SSL: bool = False
    STORAGE_REGION: str = "us-east-1"
    
    # GigaChat
    GIGACHAT_CLIENT_ID: str
    GIGACHAT_CLIENT_SECRET: str
    GIGACHAT_AUTH_URL: str = "https://ngw.devices.sberbank.ru:9443/api/v2/oauth"
    GIGACHAT_BASE_URL: str = "https://gigachat.devices.sberbank.ru/api/v1"
    GIGACHAT_MODEL_CHAT: str = "GigaChat-2-Lite"
    GIGACHAT_MODEL_SCHEDULE: str = "GigaChat-2-Pro"
    
    # CORS
    CORS_ORIGINS: list[str] = ["*"]
    
    # Rate Limiting
    RATE_LIMIT_ENABLED: bool = True
    RATE_LIMIT_PER_MINUTE: int = 60
    
    class Config:
        env_file = ".env"
        case_sensitive = True


settings = Settings()