import os
from decimal import Decimal

# --- GLOBAL SETTINGS ---
# Use environment variables to switch profiles
# Example: TARGET_DEX="UNISWAP_V3"
TARGET_DEX = os.environ.get("TARGET_DEX", "UNISWAP_V3")
STATUS_FILE = os.environ.get("STATUS_FILE", "hedge_status.json")

# --- DEX PROFILES ---
DEX_PROFILES = {
    "UNISWAP_V3": {
        "NAME": "Uniswap V3 (Arbitrum)",
        "COIN_SYMBOL": "ETH", # Asset to hedge on Hyperliquid
        "RPC_ENV_VAR": "MAINNET_RPC_URL", # Env var to read RPC from
        "NPM_ADDRESS": "0xC36442b4a4522E871399CD717aBDD847Ab11FE88",
        "ROUTER_ADDRESS": "0xE592427A0AEce92De3Edee1F18E0157C05861564",
        "WETH_ADDRESS": "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1", # WETH
        "USDC_ADDRESS": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831", # USDC
        "POOL_FEE": 500, # 0.05%
    },
    "PANCAKESWAP_V3": {
        "NAME": "PancakeSwap V3 (Arbitrum)",
        "COIN_SYMBOL": "ETH",
        "RPC_ENV_VAR": "MAINNET_RPC_URL",
        "NPM_ADDRESS": "0x46A15B0b27311cedF172AB29E4f4766fbE7F4364",
        "ROUTER_ADDRESS": "0x1b81D678ffb9C0263b24A97847620C99d213eB14",
        "WETH_ADDRESS": "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1",
        "USDC_ADDRESS": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "POOL_FEE": 500,
    },
    "UNISWAP_BNB": {
        "NAME": "Uniswap V3 (BNB Chain)",
        "COIN_SYMBOL": "BNB", # Hedge BNB
        "RPC_ENV_VAR": "BNB_RPC_URL", # Needs a BSC RPC
        # Uniswap V3 Official Addresses on BNB Chain
        "NPM_ADDRESS": "0x7b8A01B39D58278b5DE7e48c8449c9f4F5170613", 
        "ROUTER_ADDRESS": "0xB971eF87ede563556b2ED4b1C0b0019111Dd35d2", 
        # Pool: 0x47a90a2d92a8367a91efa1906bfc8c1e05bf10c4
        # Tokens: WBNB / USDT
        "WETH_ADDRESS": "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c", # WBNB
        "USDC_ADDRESS": "0x55d398326f99059fF775485246999027B3197955", # USDT (BSC)
        "POOL_FEE": 500, # 0.05%
    },
    "PANCAKESWAP_BNB": {
        "NAME": "PancakeSwap V3 (BNB Chain)",
        "COIN_SYMBOL": "BNB",
        "RPC_ENV_VAR": "BNB_RPC_URL",
        "NPM_ADDRESS": "0x46A15B0b27311cedF172AB29E4f4766fbE7F4364",
        "ROUTER_ADDRESS": "0x1b81D678ffb9C0263b24A97847620C99d213eB14", # Smart Router
        # Pool: 0x172fcD41E0913e95784454622d1c3724f546f849 (USDT/WBNB)
        "WETH_ADDRESS": "0xbb4CdB9CBd36B01bD1cBaEBF2De08d9173bc095c", # WBNB
        "USDC_ADDRESS": "0x55d398326f99059fF775485246999027B3197955", # USDT
        "POOL_FEE": 100,
    }
}

# --- STRATEGY SETTINGS ---
MONITOR_INTERVAL_SECONDS = 60
CLOSE_POSITION_ENABLED = True
OPEN_POSITION_ENABLED = True
REBALANCE_ON_CLOSE_BELOW_RANGE = True

TARGET_INVESTMENT_VALUE_USDC = 2000
INITIAL_HEDGE_CAPITAL_USDC = 1000 

RANGE_WIDTH_PCT = Decimal("0.05")      # +/- 5%
SLIPPAGE_TOLERANCE = Decimal("0.02")    # 2%
TRANSACTION_TIMEOUT_SECONDS = 30

# --- HELPER TO GET ACTIVE CONFIG ---
def get_current_config():
    conf = DEX_PROFILES.get(TARGET_DEX)
    if not conf:
        raise ValueError(f"Unknown DEX profile: {TARGET_DEX}")
    return conf