@atomicport/evm/dist/esm/EvmErc721Htlc.js

Support Cross-Chain-Swap with HTLC on any blockchains

import ERC721Abi from './abis/ERC721.json';
import HashedTimelockERC721 from './abis/HashedTimelockERC721.json';
import { BaseHTLCService } from './models/BaseHtlc';
/**
 * HTLC operations on the Ethereum Test Net.
 * Passing a value to the constructor will overwrite the specified value.
 */
export class EvmErc721Htlc extends BaseHTLCService {
    contractAddress;
    constructor(providerEndpoint, contractAddress) {
        super(providerEndpoint, contractAddress, HashedTimelockERC721.abi);
        this.contractAddress = contractAddress;
    }
    /**
     * Issue HTLC and obtain the key at the time of issue
     */
    async lock(recipientAddress, senderAddress, secret, tokenId, tokenAddress, options) {
        // Pre-register before issuing a transaction
        const erc721TokenContract = new this.web3.eth.Contract(ERC721Abi.abi, tokenAddress);
        const gas = options?.gasLimit ?? 1000000;
        await erc721TokenContract.methods
            .approve(this.contractAddress, tokenId)
            .send({ from: senderAddress, gas: gas.toString() });
        // Issue lock transaction
        const lockPeriod = Math.floor(Date.now() / 1000) + (options?.lockSeconds ?? 3600);
        return await this.contract.methods
            .newContract(recipientAddress, secret, lockPeriod, tokenAddress, tokenId)
            .send({ from: senderAddress, gas: gas.toString() });
    }
    /**
     * Receive tokens stored under the key at the time of HTLC generation
     */
    async withDraw(contractId, senderAddress, proof, gasLimit) {
        const gas = gasLimit ?? 1000000;
        const res = await this.contract.methods
            .withdraw(contractId, proof)
            .send({ from: senderAddress, gas: gas.toString() });
        return { result: res };
    }
    /**
     * for development
     * create erc721 token
     */
    async createToken(tokenAddress, senderAddress, tokenId) {
        const erc721TokenContract = new this.web3.eth.Contract(ERC721Abi.abi, tokenAddress);
        const res = await erc721TokenContract.methods
            .mint(senderAddress, tokenId)
            .send({ from: senderAddress, gas: (1000000).toString() });
        return {
            tokenId: res.events.Transfer.returnValues.tokenId,
        };
    }
}