"""
Exchange Flow Analyzer
======================

Liquidity pool monitoring and exchange flow analysis.
Tracks:
- Liquidity depth across DEXs
- Exchange deposit/withdrawal flows
- Whale movement tracking
- Risk scoring based on pool participation
"""

import logging
from dataclasses import dataclass
from datetime import datetime
from typing import Any

try:
    from web3 import Web3

    WEB3_AVAILABLE = True
except ImportError:
    WEB3_AVAILABLE = False
    logger = logging.getLogger(__name__)
    logger.warning("web3.py not available, using stub mode")

logger = logging.getLogger(__name__)


# ─── LIQUIDITY POOL CONFIGURATIONS ────────────────────────────────

DEX_CONFIGS = {
    "uniswap_v3": {
        "factory": "0x1F98431c8aD98523631AE4a59f267346ea31F984",
        "router": "0x68b3465833fb72A70ecDF485E0e4C7bD8665Te7x",
        "chain": "ethereum",
    },
    "uniswap_v2": {
        "factory": "0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f",
        "router": "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D",
        "chain": "ethereum",
    },
    "curve": {
        "factory": "0xB9fEF8811f4367e123416528724181538c511156",
        "chain": "ethereum",
    },
    "curve_v2": {
        "factory": "0x0000000000000000000000000000000000000000",  # Placeholder
        "chain": "ethereum",
    },
    "balancer": {
        "factory": "0xBA12222222228d8Ba445958a75a0704d566BF233",
        "chain": "ethereum",
    },
    "sushiswap": {
        "factory": "0xC0AEe478e3658e2610c5F7A4A2E1777c9Ef98307",
        "router": "0x1b02dA8Cb0d8576294F01f02377Ce1978d58eF5C",
        "chain": "ethereum",
    },
    "base_uniswap_v3": {
        "factory": "0x33128a8fC13f53869D7171190F65e2B9B2E1F36F",
        "router": "0x546C87632b88B584dE4106134983e4783719B8D4",
        "chain": "base",
    },
    "base_sushiswap": {
        "factory": "0xf551e3c70153905c553589509f14dea4945ca878",
        "router": "0x66343d76f738ef4be3b99d3679a4389543a8393e",
        "chain": "base",
    },
    "arbitrum_uniswap_v3": {
        "factory": "0x1F98431c8aD98523631AE4a59f267346ea31F984",
        "router": "0x68b3465833fb72A70ecDF485E0e4C7bD8665Te7x",
        "chain": "arbitrum",
    },
    "optimism_uniswap_v3": {
        "factory": "0x1F98431c8aD98523631AE4a59f267346ea31F984",
        "router": "0x68b3465833fb72A70ecDF485E0e4C7bD8665Te7x",
        "chain": "optimism",
    },
}


# ─── POOL DATA MODELS ─────────────────────────────────────────────


@dataclass
class LiquidityPool:
    """Liquidity pool data."""

    pool_address: str
    token0: str
    token1: str
    token0_reserve: int  # wei
    token1_reserve: int  # wei
    total_liquidity_usd: float
    volume_24h_usd: float
    fees_24h_usd: float
    tvl_usd: float
    dune_analytics_id: str | None = None
    dex: str = "unknown"


@dataclass
class ExchangeFlow:
    """Exchange deposit/withdrawal flow."""

    address: str
    exchange: str
    entry_time: str
    exit_time: str | None = None
    entry_amount_usd: float = 0
    exit_amount_usd: float = 0
    profit_usd: float = 0
    risk_score: int = 0


@dataclass
class WhaleMovement:
    """Whale movement tracking."""

    address: str
    amount: int  # wei
    token: str
    from_exchange: str | None = None
    to_exchange: str | None = None
    timestamp: str = ""
    tx_hash: str | None = None


# ─── EXCHANGE FLOW ANALYZER ───────────────────────────────────────


class ExchangeFlowAnalyzer:
    """Analyzer for exchange flows and liquidity pools."""

    def __init__(self, web3_client=None):
        self.web3 = web3_client
        self.pools: dict[str, LiquidityPool] = {}
        self.flows: list[ExchangeFlow] = []
        self.whales: list[WhaleMovement] = []
        self.exchange_ratelimits: dict[str, int] = {
            "binance": 50000,
            "coinbase": 100000,
            "kraken": 25000,
            "kucoin": 30000,
            "ftx": 10000,
        }

    def get_liquidity_pool(self, pool_address: str, chain: str = "base") -> LiquidityPool | None:
        """
        Get liquidity pool data.

        Args:
            pool_address: Pool contract address
            chain: Blockchain network

        Returns:
            LiquidityPool data or None
        """
        if not WEB3_AVAILABLE and not self.web3:
            return self._stub_pool(pool_address)

        try:
            w3 = self.web3 or Web3(Web3.HTTPProvider(self._get_rpc(chain)))

            # Get pool reserve data (Simplified - real implementation would use pool ABI)
            reserve0 = w3.eth.get_balance(pool_address) if w3.eth.get_code(pool_address) else 0
            reserve1 = 0  # Would fetch from other token

            return LiquidityPool(
                pool_address=pool_address,
                token0="0x0000000000000000000000000000000000000000",
                token1="0x0000000000000000000000000000000000000000",
                token0_reserve=reserve0,
                token1_reserve=reserve1,
                total_liquidity_usd=0,
                volume_24h_usd=0,
                fees_24h_usd=0,
                tvl_usd=0,
                dex=self._detect_dex(pool_address, chain),
            )
        except Exception as e:
            logger.error(f"Error fetching pool {pool_address}: {e}")
            return self._stub_pool(pool_address)

    def _get_rpc(self, chain: str) -> str:
        """Get RPC URL for chain."""
        rpcs = {
            "ethereum": "https://ethereum-rpc.publicnode.com",
            "base": "https://base-rpc.publicnode.com",
            "arbitrum": "https://arbitrum-rpc.publicnode.com",
            "optimism": "https://optimism-rpc.publicnode.com",
        }
        return rpcs.get(chain, rpcs["ethereum"])

    def _detect_dex(self, address: str, chain: str) -> str:
        """Detect which DEX a pool belongs to."""
        address_lower = address.lower()

        dex_configs = DEX_CONFIGS.get(chain, {})
        for dex, config in dex_configs.items():
            factory = config.get("factory", "").lower()
            if factory and address_lower.startswith(factory[:10]):
                return dex

        # Fallback detection
        if "uniswap" in address_lower or "1f984" in address_lower:
            return "uniswap_v3"
        if "curve" in address_lower:
            return "curve"
        if "balancer" in address_lower:
            return "balancer"
        if "sushiswap" in address_lower:
            return "sushiswap"

        return "unknown"

    def _stub_pool(self, address: str) -> LiquidityPool:
        """Stub pool data when Web3 unavailable."""
        return LiquidityPool(
            pool_address=address,
            token0="0x",
            token1="0x",
            token0_reserve=0,
            token1_reserve=0,
            total_liquidity_usd=0,
            volume_24h_usd=0,
            fees_24h_usd=0,
            tvl_usd=0,
            dex="stub",
        )

    def analyze_entity_flows(self, address: str, chain: str = "base") -> dict[str, Any]:
        """
        Analyze exchange flows for an entity (wallet).

        Args:
            address: Entity address
            chain: Blockchain network

        Returns:
            Flow analysis results
        """
        result = {
            "address": address,
            "chain": chain,
            "exchanges": [],
            "total_inflow_usd": 0,
            "total_outflow_usd": 0,
            "risk_score": 0,
            "last_updated": datetime.utcnow().isoformat(),
        }

        # Simplified analysis - real implementation would track actual flows
        result["exchanges"].append(
            {
                "exchange": "binance",
                "inflow_usd": 0,
                "outflow_usd": 0,
                "holdings_usd": 0,
                "risk_score": 50,  # Medium risk
            }
        )

        return result

    def compare_flows(self, addresses: list[str], chain: str = "base") -> dict[str, Any]:
        """Compare flows between multiple addresses."""
        result = {
            "chain": chain,
            "addresses": {},
            "correlations": [],
            "last_updated": datetime.utcnow().isoformat(),
        }

        for addr in addresses:
            flows = self.analyze_entity_flows(addr, chain)
            result["addresses"][addr] = flows

        # Detect correlations (simplified)
        result["correlations"] = []

        return result

    def get_reserves(self, pool_address: str, chain: str = "base") -> dict[str, int]:
        """
        Get current pool reserves.

        Args:
            pool_address: Pool address
            chain: Blockchain network

        Returns:
            Reserves dict
        """
        pool = self.get_liquidity_pool(pool_address, chain)
        return {
            "reserve0": pool.token0_reserve,
            "reserve1": pool.token1_reserve,
            "total_liquidity": pool.total_liquidity_usd,
        }

    def track_whale_movements(self, address: str, threshold_usd: float = 100000) -> list[WhaleMovement]:
        """
        Track large movements for an address.

        Args:
            address: Wallet address
            threshold_usd: Minimum transaction value in USD

        Returns:
            List of whale movements
        """
        # Simplified - real implementation would scan blocks
        return []


# ─── GLOBAL SINGLETON ─────────────────────────────────────────────

_analyzer = ExchangeFlowAnalyzer()


def analyze_entity_flows(address: str, chain: str = "base") -> dict[str, Any]:
    """Analyze entity exchange flows."""
    return _analyzer.analyze_entity_flows(address, chain)


def compare_flows(addresses: list[str], chain: str = "base") -> dict[str, Any]:
    """Compare exchange flows between addresses."""
    return _analyzer.compare_flows(addresses, chain)


def get_reserves(pool_address: str, chain: str = "base") -> dict[str, int]:
    """Get pool reserves."""
    return _analyzer.get_reserves(pool_address, chain)
