const EIP712Domain = {
  chainId: 421614, // Arbitrum Sepolia (use 42161 for Arbitrum One mainnet)
  name: 'Premia',
  verifyingContract: '0x...', // ClearingHouseProxy address from deployment
  version: '1',
};

import { parseUnits, zeroAddress } from 'viem';
import { privateKeyToAccount } from 'viem/accounts';

// Your order data
const order = {
  instrument_name: 'BTC_USDC-31OCT25-130000-C',
  contracts: 1.5,
  direction: 'buy',
  price: 1000.5,
  post_only: true,
  mmp: false,
  liquidation: false,
  maker: '0xYourAddress',
  taker: null, // Any taker
};

// Calculate deadline (30 seconds from now)
const deadline = Math.floor(Date.now() / 1000) + 30;

// Setup wallet
const account = privateKeyToAccount('0xYourPrivateKey');

// Type definition for limit orders
const UserLimitOrder = [
  { name: 'deadline', type: 'uint256' },
  { name: 'instrumentName', type: 'string' },
  { name: 'size', type: 'uint256' },
  { name: 'price', type: 'uint256' },
  { name: 'taker', type: 'address' },
  { name: 'maker', type: 'address' },
  { name: 'direction', type: 'uint8' },
  { name: 'isLiquidation', type: 'bool' },
  { name: 'isPostOnly', type: 'bool' },
  { name: 'mmp', type: 'bool' },
];

// Sign the typed data
const signature = await account.signTypedData({
  domain: EIP712Domain,
  types: { UserLimitOrder },
  primaryType: 'UserLimitOrder',
  message: {
    deadline,
    instrumentName: order.instrument_name,
    size: parseUnits(order.contracts.toString(), 6), // 6 decimal precision
    price: parseUnits(order.price.toString(), 6),
    taker: order.taker ?? zeroAddress,
    maker: order.maker,
    direction: order.direction === 'buy' ? 0 : 1, // Buy=0, Sell=1
    isLiquidation: order.liquidation,
    isPostOnly: order.post_only,
    mmp: order.mmp,
  },
});

// Submit the order
const response = await fetch('/limit', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-apikey': 'your-api-key',
  },
  body: JSON.stringify([
    {
      ...order,
      signature,
      signature_deadline: deadline,
    },
  ]),
});

// Create a one-click session
const sessionDeadline = Math.floor(Date.now() / 1000) + 3600; // 1 hour

const OneClickSignature = [
  { name: 'deadline', type: 'uint256' },
  { name: 'user', type: 'address' },
  { name: 'bindToIp', type: 'bool' },
];

const sessionSignature = await account.signTypedData({
  domain: EIP712Domain,
  types: { OneClickSignature },
  primaryType: 'OneClickSignature',
  message: {
    deadline: sessionDeadline,
    user: '0xYourAddress',
    bindToIp: true,
  },
});

// Create session
const sessionResponse = await fetch('/session', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    user: '0xYourAddress',
    bind_to_ip: true,
    signature_deadline: sessionDeadline,
    signature: sessionSignature,
  }),
});

const { hash } = await sessionResponse.json();

// Now use session for orders (no signature needed)
const orderResponse = await fetch('/limit', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'x-apikey': 'your-api-key',
    'x-one-click': hash, // Use session instead of signature
  },
  body: JSON.stringify([
    {
      instrument_name: 'BTC_USDC-31OCT25-130000-C',
      contracts: 1.5,
      direction: 'buy',
      price: 1000.5,
      post_only: true,
      mmp: false,
      liquidation: false,
      maker: '0xYourAddress',
      taker: null,
      // No signature or signature_deadline needed!
    },
  ]),
});

curl -X GET "https://staging.kyan.sh/account_state/0x1234567890abcdef1234567890abcdef12345678" \
  -H "x-apikey: your-api-key-here"

{
  "margin_accounts": [
    {
      "pair": "ETH_USDC",
      "timestamp": 1677721600000,
      "margin_account": 12345,
      "im": 2000.0,
      "mm": 1500.0,
      "matrix_risk": 1200.0,
      "delta_risk": 800.0,
      "roll_risk": 300.0,
      "unrealised_pnl": 500.0,
      "equity": 10500.0,
      "portfolio_greeks": {
        "delta": 0.45,
        "gamma": 0.0012,
        "vega": 125.3,
        "theta": -45.5,
        "rho": 85.2
      },
      "positions": [
        {
          "instrument_type": "option",
          "instrument": "ETH_USDC-31OCT25-4700-P",
          "size": -2.0,
          "average_price": 65.0,
          "entry_fees": 0.1,
          "mark_price": 67.5,
          "mark_iv": 0.65,
          "mark_interest": 0.05,
          "position_greeks": {
            "delta": -0.35,
            "gamma": 0.0008,
            "theta": -12.5,
            "vega": 45.2,
            "rho": -15.8
          }
        }
      ]
    },
    {
      "pair": "BTC_USDC",
      "timestamp": 1677721580000,
      "margin_account": 12346,
      "im": 5000.0,
      "mm": 3750.0,
      "matrix_risk": 2800.0,
      "delta_risk": 1500.0,
      "roll_risk": 200.0,
      "unrealised_pnl": -250.0,
      "equity": 25000.0,
      "portfolio_greeks": {
        "delta": 0.25,
        "gamma": 0.0005,
        "vega": 85.1,
        "theta": -25.2,
        "rho": 120.5
      },
      "positions": [
        {
          "instrument_type": "perp",
          "instrument": "BTC_USDC-PERPETUAL",
          "size": 0.5,
          "average_price": 45000.0,
          "entry_fees": 18.0,
          "mark_price": 45010.0,
          "current_funding_rate": 0.0001,
          "position_greeks": {
            "delta": 0.5
          }
        }
      ]
    }
  ]
}