Smart Contracts

solidity
interface IStrategyVault {
    // Events
    event Deposited(address indexed user, uint256 amount0, uint256 amount1, uint256 shares);
    event Withdrawn(address indexed user, uint256 shares, uint256 amount0, uint256 amount1);
    event Rebalanced(int24 newTickLower, int24 newTickUpper, uint256 timestamp);
    event FeesCollected(uint256 fee0, uint256 fee1);

    // View functions
    function totalValueLocked() external view returns (uint256);
    function getCurrentPosition() external view returns (
        int24 tickLower,
        int24 tickUpper,
        uint128 liquidity
    );
    function getUserShares(address user) external view returns (uint256);
    function getPerformanceMetrics() external view returns (
        uint256 apy,
        uint256 sharpeRatio,
        uint256 maxDrawdown
    );

    // State-changing functions
    function deposit(
        uint256 amount0Desired,
        uint256 amount1Desired,
        uint256 amount0Min,
        uint256 amount1Min,
        address recipient,
        uint256 deadline
    ) external returns (uint256 shares, uint256 amount0, uint256 amount1);

    function withdraw(
        uint256 shares,
        uint256 amount0Min,
        uint256 amount1Min,
        address recipient,
        uint256 deadline
    ) external returns (uint256 amount0, uint256 amount1);

    function rebalance(
        int24 newTickLower,
        int24 newTickUpper,
        uint256 deadline,
        bytes calldata aiSignature
    ) external;

    function collectFees() external returns (uint256 fee0, uint256 fee1);
    function compound() external;
}

solidity
interface IVaultFactory {
    // Structs
    struct VaultParams {
        address token0;
        address token1;
        uint24 fee;
        int24 tickSpacing;
        string name;
        string strategy;
        address oracle;
        uint256 rebalanceThreshold;
    }

    // Events
    event VaultCreated(
        address indexed vault,
        address indexed creator,
        address token0,
        address token1,
        string strategy
    );

    // Functions
    function createVault(
        VaultParams calldata params
    ) external payable returns (address vault);

    function getVault(bytes32 salt) external view returns (address);
    function getVaultByIndex(uint256 index) external view returns (address);
    function allVaultsLength() external view returns (uint256);
    function isVault(address vault) external view returns (bool);
    function setVaultImplementation(address newImplementation) external;
    function updateOracle(address vault, address newOracle) external;
}

solidity
interface IAIOracle {
    // Structs
    struct RebalanceSignal {
        int24 newTickLower;
        int24 newTickUpper;
        uint256 confidence;
        uint256 expectedAPY;
        uint256 gasEstimate;
        uint256 timestamp;
        bytes signature;
    }

    struct MarketData {
        uint256 price;
        uint256 volume24h;
        uint256 volatility;
        uint256 liquidity;
    }

    // Events
    event SignalGenerated(
        address indexed vault,
        int24 tickLower,
        int24 tickUpper,
        uint256 confidence
    );
    event ModelUpdated(string model, address signer);

    // Functions
    function requestRebalanceSignal(
        address vault,
        MarketData calldata data
    ) external returns (bytes32 requestId);

    function getSignal(
        bytes32 requestId
    ) external view returns (RebalanceSignal memory);

    function validateSignature(
        bytes32 requestId,
        bytes calldata signature
    ) external view returns (bool);

    function registerModel(
        string calldata modelId,
        address signer
    ) external;

    function setConfidenceThreshold(uint256 threshold) external;
}

javascript
import { ethers } from 'ethers';

// Testnet configuration
const TESTNET_CONFIG = {
  chainId: 1328,
  name: 'SEI Atlantic-2 Testnet',
  rpcUrl: 'https://evm-rpc-testnet.sei-apis.com',
  explorer: 'https://seitrace.com/atlantic-2',
  nativeCurrency: {
    name: 'SEI',
    symbol: 'SEI',
    decimals: 18
  }
};

// Connect to SEI
const provider = new ethers.JsonRpcProvider(TESTNET_CONFIG.rpcUrl);

// Connect wallet
const signer = new ethers.Wallet(privateKey, provider);

// Or use MetaMask
if (window.ethereum) {
  await window.ethereum.request({
    method: 'wallet_addEthereumChain',
    params: [{
      chainId: '0x' + TESTNET_CONFIG.chainId.toString(16),
      chainName: TESTNET_CONFIG.name,
      rpcUrls: [TESTNET_CONFIG.rpcUrl],
      blockExplorerUrls: [TESTNET_CONFIG.explorer],
      nativeCurrency: TESTNET_CONFIG.nativeCurrency
    }]
  });
}

javascript
import { ethers } from 'ethers';
import VAULT_ABI from './abis/StrategyVault.json';

// Vault configuration
const VAULT_ADDRESS = '0xf6A791e4773A60083AA29aaCCDc3bA5E900974fE';
const TOKEN0_ADDRESS = '0x...'; // SEI
const TOKEN1_ADDRESS = '0x...'; // USDC

// Initialize contract
const vault = new ethers.Contract(VAULT_ADDRESS, VAULT_ABI, signer);

// Approve tokens first
const token0 = new ethers.Contract(TOKEN0_ADDRESS, ERC20_ABI, signer);
const token1 = new ethers.Contract(TOKEN1_ADDRESS, ERC20_ABI, signer);

const amount0 = ethers.parseEther('10'); // 10 SEI
const amount1 = ethers.parseUnits('100', 6); // 100 USDC

await token0.approve(VAULT_ADDRESS, amount0);
await token1.approve(VAULT_ADDRESS, amount1);

// Deposit into vault
const deadline = Math.floor(Date.now() / 1000) + 3600; // 1 hour
const tx = await vault.deposit(
  amount0,
  amount1,
  0, // amount0Min - set slippage protection
  0, // amount1Min - set slippage protection
  signer.address,
  deadline
);

const receipt = await tx.wait();
console.log('Deposit successful:', receipt.transactionHash);

// Check your shares
const shares = await vault.getUserShares(signer.address);
console.log('Your vault shares:', ethers.formatEther(shares));

javascript
// Get vault metrics
const tvl = await vault.totalValueLocked();
const metrics = await vault.getPerformanceMetrics();

console.log('Total Value Locked:', ethers.formatEther(tvl));
console.log('APY:', metrics.apy / 100, '%');
console.log('Sharpe Ratio:', metrics.sharpeRatio / 100);
console.log('Max Drawdown:', metrics.maxDrawdown / 100, '%');

// Get current position
const position = await vault.getCurrentPosition();
console.log('Current tick range:', position.tickLower, '-', position.tickUpper);
console.log('Liquidity:', position.liquidity.toString());

// Calculate your share value
const userShares = await vault.getUserShares(signer.address);
const totalShares = await vault.totalSupply();
const userValue = (tvl * userShares) / totalShares;

console.log('Your position value:', ethers.formatEther(userValue));

// Listen to vault events
vault.on('Rebalanced', (tickLower, tickUpper, timestamp) => {
  console.log('Vault rebalanced:', {
    newRange: [tickLower, tickUpper],
    time: new Date(timestamp * 1000)
  });
});

vault.on('FeesCollected', (fee0, fee1) => {
  console.log('Fees collected:', {
    token0: ethers.formatEther(fee0),
    token1: ethers.formatUnits(fee1, 6)
  });
});

javascript
import FACTORY_ABI from './abis/VaultFactory.json';

const FACTORY_ADDRESS = '0x1234567890123456789012345678901234567890';
const factory = new ethers.Contract(FACTORY_ADDRESS, FACTORY_ABI, signer);

// Define vault parameters
const vaultParams = {
  token0: '0x...', // SEI address
  token1: '0x...', // USDC address
  fee: 3000, // 0.3% fee tier
  tickSpacing: 60,
  name: 'My Custom SEI-USDC Vault',
  strategy: 'concentrated_liquidity',
  oracle: '0xABCDEF1234567890ABCDEF1234567890ABCDEF12',
  rebalanceThreshold: 500 // 5% threshold
};

// Create vault (requires deployment fee)
const deploymentFee = ethers.parseEther('0.1');
const tx = await factory.createVault(vaultParams, { value: deploymentFee });
const receipt = await tx.wait();

// Get vault address from events
const event = receipt.logs.find(
  log => log.topics[0] === factory.interface.getEventTopic('VaultCreated')
);
const decodedEvent = factory.interface.decodeEventLog('VaultCreated', event.data, event.topics);
const vaultAddress = decodedEvent.vault;

console.log('New vault deployed at:', vaultAddress);