import logging
import os
from dotenv import load_dotenv
from pydantic import BaseModel

load_dotenv()

class BotConfig(BaseModel):
    """Bot configuration from environment variables."""
    
    # Binance API
    binance_api_key_testnet: str = os.getenv("BINANCE_API_KEY_TESTNET", "")
    binance_api_secret_testnet: str = os.getenv("BINANCE_API_SECRET_TESTNET", "")
    binance_api_key_live: str = os.getenv("BINANCE_API_KEY_LIVE", "")
    binance_api_secret_live: str = os.getenv("BINANCE_API_SECRET_LIVE", "")
    
    # Bot
    dry_run: bool = os.getenv("DRY_RUN", "false").lower() == "true"
    environment: str = os.getenv("ENVIRONMENT", "testnet")  # "testnet" or "live"
    trading_pair: str = os.getenv("TRADING_PAIR", "BTCUSDT")
    dca_amount_usd: float = float(os.getenv("DCA_AMOUNT", "10"))
    dca_interval_hours: float = float(os.getenv("DCA_INTERVAL_HOURS", "1"))
    stop_loss_percent: float = float(os.getenv("STOP_LOSS_PERCENT", "2"))
    
    # Telegram
    telegram_bot_token: str = os.getenv("TELEGRAM_BOT_TOKEN", "")
    telegram_chat_id: str = os.getenv("TELEGRAM_CHAT_ID", "")
    
    # Obsidian
    obsidian_vault_path: str = os.getenv("OBSIDIAN_VAULT_PATH", "/opt/obsidian/config/Vault/Test/")
    obsidian_trade_log_file: str = os.getenv("OBSIDIAN_TRADE_LOG_FILE", "BrainDock/trading-log.md")
    
    # Database
    db_path: str = os.getenv("DB_PATH", "/data/bot_state.db")
    
    class Config:
        env_file = ".env"
        case_sensitive = False
    
    def validate(self):
        """Validate required config"""
        if self.environment not in ("testnet", "live"):
            raise ValueError("ENVIRONMENT must be 'testnet' or 'live'")
        
        if self.environment == "testnet":
            if not self.binance_api_key_testnet or not self.binance_api_secret_testnet:
                raise ValueError("Testnet API credentials required")
        else:
            if not self.binance_api_key_live or not self.binance_api_secret_live:
                raise ValueError("Live API credentials required")
        
        if not self.telegram_bot_token or not self.telegram_chat_id:
            logger.warning("Telegram credentials not configured - notifications disabled")
        
        return self

def get_config() -> BotConfig:
    """Get validated config"""
    config = BotConfig()
    return config.validate()