"""
Live trading node for Hyperliquid Testnet.

Runs all five quant strategies against the Hyperliquid testnet
using NautilusTrader's event-driven architecture. Strategies share
a risk manager and portfolio tracker.

Usage:
    export HYPERLIQUID_TESTNET_PK=0x...
    python live/node.py
"""
import os
import sys
import asyncio
from pathlib import Path

from nautilus_trader.config import TradingNodeConfig
from nautilus_trader.config import LiveDataEngineConfig
from nautilus_trader.config import LiveRiskEngineConfig
from nautilus_trader.config import LiveExecEngineConfig
from nautilus_trader.model.identifiers import TraderId
from nautilus_trader.common.enums import Environment
from nautilus_trader.live.node import TradingNode

from nautilus_trader.adapters.hyperliquid.config import (
    HyperliquidDataClientConfig,
    HyperliquidExecClientConfig,
)
from nautilus_trader.adapters.hyperliquid.factories import (
    HyperliquidLiveDataClientFactory,
    HyperliquidLiveExecClientFactory,
)


def build_node(private_key: str) -> TradingNode:
    """Build and configure the trading node with all strategies."""

    data_config = HyperliquidDataClientConfig(
        environment="testnet",
        http_timeout_secs=30,
    )
    exec_config = HyperliquidExecClientConfig(
        private_key=private_key,
        environment="testnet",
        normalize_prices=True,
        http_timeout_secs=30,
    )

    node_config = TradingNodeConfig(
        trader_id=TraderId("FTDT-QUANT-001"),
        environment=Environment.LIVE,
        data_engine=LiveDataEngineConfig(),
        risk_engine=LiveRiskEngineConfig(),
        exec_engine=LiveExecEngineConfig(),
        data_clients={
            "HYPERLIQUID": data_config,
        },
        exec_clients={
            "HYPERLIQUID": exec_config,
        },
        timeout_connection=30.0,
        timeout_reconciliation=15.0,
        timeout_portfolio=15.0,
        timeout_disconnection=15.0,
        timeout_post_stop=5.0,
    )

    node = TradingNode(config=node_config)

    # Register the Hyperliquid client factories
    node.add_data_client_factory("HYPERLIQUID", HyperliquidLiveDataClientFactory)
    node.add_exec_client_factory("HYPERLIQUID", HyperliquidLiveExecClientFactory)

    return node


def register_strategies(node: TradingNode) -> None:
    """Register all five strategies with the trading node."""

    # Import strategies here to avoid circular imports
    from strategies.orderbook_imbalance import (
        OrderBookImbalance, OrderBookImbalanceConfig,
    )
    from strategies.iceberg_detection import (
        IcebergDetector, IcebergDetectorConfig,
    )
    from strategies.funding_rate_arb import (
        FundingRateArb, FundingRateArbConfig,
    )
    from strategies.pairs_trading import (
        PairsTrading, PairsTradingConfig,
    )
    from strategies.avellaneda_stoikov import (
        AvellanedaStoikov, AvellanedaStoikovConfig,
    )

    # 1. Order Book Imbalance
    node.add_strategy(
        OrderBookImbalance,
        OrderBookImbalanceConfig(
            instrument_id="BTC-USD-PERP",
        ),
    )

    # 2. Iceberg / TWAP Detection
    node.add_strategy(
        IcebergDetector,
        IcebergDetectorConfig(
            instrument_id="BTC-USD-PERP",
        ),
    )

    # 3. Funding Rate Arbitrage
    node.add_strategy(
        FundingRateArb,
        FundingRateArbConfig(
            spot_instrument="BTC-SPOT",
            perp_instrument="BTC-USD-PERP",
        ),
    )

    # 4. Pairs Trading (BTC/ETH)
    node.add_strategy(
        PairsTrading,
        PairsTradingConfig(
            pair=("BTC-USD-PERP", "ETH-USD-PERP"),
        ),
    )

    # 5. Avellaneda-Stoikov Market Making
    node.add_strategy(
        AvellanedaStoikov,
        AvellanedaStoikovConfig(
            instrument_id="BTC-USD-PERP",
        ),
    )


def _load_key() -> str | None:
    """Load private key from env var or .env file."""
    key = os.getenv("HYPERLIQUID_TESTNET_PK")
    if key:
        return key
    # Fallback: read from .env file
    env_file = Path(__file__).resolve().parent.parent / ".env"
    if env_file.exists():
        for line in env_file.read_text().splitlines():
            if line.startswith("HYPERLIQUID_TESTNET_PK="):
                return line.split("=", 1)[1].strip()
    return None


async def main():
    private_key = _load_key()
    if not private_key:
        print("ERROR: Set HYPERLIQUID_TESTNET_PK environment variable")
        print("  or create a .env file in the project root.")
        sys.exit(1)

    print("=" * 55)
    print("  FTDT Quant Lab - Live Trading Node")
    print("  Hyperliquid Testnet")
    print("=" * 55)
    print()
    print("Strategies:")
    print("  1. Order Book Imbalance (OFI)")
    print("  2. Iceberg / TWAP Detection")
    print("  3. Funding Rate Arbitrage")
    print("  4. Pairs Trading (BTC/ETH)")
    print("  5. Avellaneda-Stoikov Market Making")
    print()

    node = build_node(private_key)
    register_strategies(node)

    print("Connecting to Hyperliquid Testnet...")
    try:
        await node.start()
        print("Node started. Running strategies...")
        print("Press Ctrl+C to stop.")
        await node.run_until_stopped()
    except KeyboardInterrupt:
        print("\nShutting down...")
    finally:
        await node.stop()
        print("Node stopped. Goodbye.")


if __name__ == "__main__":
    asyncio.run(main())