from pydantic_settings import BaseSettings
from pydantic import AnyHttpUrl, field_validator
from typing import List, Optional
import secrets


class Settings(BaseSettings):
    # Uygulama
    APP_NAME: str = "KaplanOS"
    APP_ENV: str = "development"
    DEBUG: bool = True
    API_V1_STR: str = "/api/v1"

    # Güvenlik
    SECRET_KEY: str = secrets.token_urlsafe(32)
    ALGORITHM: str = "HS256"
    ACCESS_TOKEN_EXPIRE_MINUTES: int = 15
    REFRESH_TOKEN_EXPIRE_DAYS: int = 30

    # Veritabanı
    DATABASE_URL: str = "mysql+pymysql://kaplan_user:kaplan_password@localhost:3306/kaplan_os"

    # CORS
    BACKEND_CORS_ORIGINS: List[str] = ["http://localhost:3000", "http://localhost:80"]

    @field_validator("BACKEND_CORS_ORIGINS", mode="before")
    @classmethod
    def assemble_cors_origins(cls, v):
        if isinstance(v, str):
            import json
            try:
                return json.loads(v)
            except Exception:
                return [i.strip() for i in v.split(",")]
        return v

    # Dosya Yükleme
    MAX_UPLOAD_SIZE_MB: int = 10
    UPLOAD_DIR: str = "uploads"

    # E-posta
    SMTP_HOST: Optional[str] = None
    SMTP_PORT: int = 587
    SMTP_USER: Optional[str] = None
    SMTP_PASSWORD: Optional[str] = None
    EMAILS_FROM_EMAIL: str = "noreply@kaplan-os.com"
    EMAILS_FROM_NAME: str = "KaplanOS"

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


settings = Settings()