"""
Signal Engine Configuration
Environment-based configuration with Pydantic Settings
"""

from pydantic_settings import BaseSettings
from typing import Optional

class Settings(BaseSettings):
    # Database
    database_url: str = "sqlite:///signal_engine.db"
    
    # Gate.io API
    gateio_api_url: str = "https://api.gateio.ws/api/v4"
    
    # Model Settings
    min_price: float = 0.10
    min_volume_24h: float = 50000.0
    volatility_window: int = 20
    rsi_period: int = 14
    
    # Scoring
    maker_fee_bps: float = 2.0
    hypothetical_spread_bps: float = 5.0
    
    # API
    api_host: str = "0.0.0.0"
    api_port: int = 8000
    api_prefix: str = "/v1"
    
    # Security
    secret_key: str = "change-me-in-production"
    stripe_webhook_secret: Optional[str] = None
    
    # Rate Limiting
    free_tier_rate_limit: int = 10
    pro_tier_rate_limit: int = 100
    enterprise_tier_rate_limit: int = 1000
    
    class Config:
        env_file = ".env"
        env_file_encoding = "utf-8"

settings = Settings()