@d11k-ts/polkadot

Modules

• client - Custom client for communicating with polkadot by using @polkadot/api

Installation

yarn add @d11k-ts/polkadot

Documentation : Basic usage examples

Connect wallet to new PolkadotClient

• Create new Polkadot client
• Network default is Mainnet

// Imports
import { Network } from '@d11k-ts/client'
import { PolkadotClient } from '@d11k-ts/polkadot'

//Connect wallet, get address and check balance 
const connectWallet = async () => {
  let phrase = "phrase"
  // Mainnet
  const polkaClient = new PolkadotClient({phrase})
  // testnet
  // const polkaClient = new PolkadotClient({ 
  //    phrase, 
  //    network: Network.Testnet 
  //    provider: 'wss://dotws-test.h4s.dojima.network:9944'
  // })
  let address = polkaClient.getAddress()
  try {
      const balance = await polkaClient.getBalance(address)
      console.log(`Adress: ${address} with balance ${balance}`)

    } catch (error) {
      console.log(`Caught: ${error} `)
    }
  process.exit()
}

Transfer dot using PolkadotClient

• Create new PolkadotClient instance
• Build transaction
• Returns txHash as string

const transferDot = async () => {
  // First initiate PolkadotClient
  let amountToTransfer = 0.001
  let recipient = 'insert address'
  console.log("Building transaction")
  try {
    const txid = await polkaClient.transfer({ 
      recipient,
      amount: amountToTransfer
    })
    console.log(`Transaction sent: ${txid}`)
    return txid
  } catch (error) {
    console.log(`Caught: ${error} `)
  }
  process.exit()
}

Get transaction Data & transaction History

• No code for retrieving tx data and history in @d11k-ts/polkadot.
• View tx details in explorer
• Mainnet : polkadot-subscan

Get gas fee for transaction

• Retrieve gas fee for transaction from build tx

const fee = async () => {
  let amountToTransfer = 0.001
  let recipient = 'insert address'
  try {
    const fees = polkaClient.getFees({
      recipient,
      amount: amountToTransfer
    })
    console.log(`Fees Fast: ${fees.average} Fastest: ${fees.fast} Average: ${fees.slow}`)
  } catch (error) {
    console.log(`Caught ${error}`)
  }
  process.exit()
}

Get Polkadot Inbound address

• Get Polkadot Inbound address from hermes chain
• Can be used in adding liquidity pool and swapping

const inboundAddr = async () => {
  try {
    const inboundAddress = await polkaClient.getPolkadotInboundAddress()
    console.log('Inbound Address :: ', inboundAddress)
  } catch (error) {
    console.log(`Caught ${error}`)
  }
  process.exit()
}

Get default liquidity pool gas fee

• Get Polkadot default liquidity pool gas fee from hermes chain

const defaultLPGasFee = async () => {
  try {
    const LPDefaultGasFee = await polkaClient.getDefaultLiquidityPoolGasFee()
    console.log('Liquidity pool default gas fee :: ', LPDefaultGasFee)
  } catch (error) {
    console.log(`Caught ${error}`)
  }
  process.exit()
}

Add DOT token into liquidity pool

• Add DOT tokens into liquidity pool
• Get Polkadot Inbound address from hermes chain

const addDotToLiquidityPool = async () => {
  let amountToTransfer = 0.001
  const inboundAddress = await polkaClient.getPolkadotInboundAddress()
  try {
    const liquidityPoolHash = await polkaClient.addLiquidityPool(
      amountToTransfer,
      inboundAddress,
      dojAddress,           // optional dojima address
    )
    console.log('Liquidity pool hash : ', liquidityPoolHash)
  } catch (error) {
    console.log(`Caught ${error}`)
  }
  process.exit()
}

Swap DOT tokens

• Swap DOT tokens to required token using receiver address
• Get Polkadot Inbound address from hermes chain
• Supported tokens for swapping - ‘AR’, ‘DOJ’, ‘ETH’, ‘SOL’

import {SwapAssetList} from '@d11k-ts/utils'

const swapDOT = async () => {
  let amountToTransfer = 0.001
  const inboundAddress = await polkaClient.getPolkadotInboundAddress()
  try {
    const swapHash = await polkaClient.swap(
       amountToTransfer,
      SwapAssetList,
      inboundAddress,
      reciepient                // Respective receiver SwapAssetList token address
    )
    console.log('Swap tx hash : ', swapHash)
  } catch (error) {
    console.log(`Caught ${error}`)
  }
  process.exit()
}

Example Code

For sample code check out example test case in Polkadot