chainbreakers-maticjs-example.js

/* Add maticjs Library as a dep in your project
This library is still WIP, so locking the lib on a commit id for now

npm i --save atvanguard/matic.js#ff738ac9addca5ead3474f238f42b921ebfe2ffd
*/

import Matic from 'maticjs'

async function initializeMaticClient(contracts) {
  const options = {
    parentProvider: new Web3('http://localhost:8545'),
    maticProvider: new Web3('http://localhost:8546'),
    registry: contracts.registry.address,
    rootChain: contracts.rootChain.address,
    depositManager: contracts.depositManager.address,
    withdrawManager: contracts.withdrawManager.address
  }
  const maticClient = new Matic(options)
  await maticClient.initialize()
  return maticClient
}

async function execute() {
  const bob = <address> // get from metamask or the likes
        
  // Initialize Matic Client
  // contracts are the matic contract addresses, will give them to you
  const maticClient = await initializeMaticClient(contracts)
  
  // Deposit a single token (Eth -> Matic)
  await rootERC721.approve(contracts.depositManager.address, tokenId, { from: bob })
  const deposit = await maticClient.depositManager.depositERC721(rootERC721.address, tokenId, { from: bob })
  
  // Deposit Bulk (Eth -> Matic) 
  await rootERC721.setApprovalForAll(contracts.depositManager.address /* to */, true /* approved */, { from: bob })
  const tokenIds = [] // array of tokenIds to deposit
  const tokens = Array(tokenIds.length).fill(rootERC721.address) // array of token contract address
  const deposit = await maticClient.depositManager.depositBulk(tokens, tokenIds, bob, { from: bob })
  
  // Withdraw on matic chain
  const withdraw = await maticClient.withdrawManager.burnERC721Token(
    childErc721.address,
    tokenId,
    { from: bob }
  )
     
  // start exit on mainchain for a single token
  const startExit = await maticClient.withdrawManager.startExitForMintWithTokenURITokens(
    withdraw.transactionHash,
    { from: bob }
  )
  
  // start exit on mainchain for several burnt tokens
  const withdrawls = [withdraw.transactionHash] // array containing txHashes of withdraw txs on matic chain
  const startExit = await maticClient.withdrawManager.startBulkExitForMintWithTokenURITokens(
    withdrawls, 
    { from: bob }
  )
  
  // processExits needs to be called after 7 days to actually transfer the token to owner
}