xrpl-dev-portal/_code-samples/modular-tutorials/send-checks.js

// *******************************************************
// ***************** Send Check **************************
// *******************************************************
async function sendCheck() {
  let net = getNet()
  const client = new xrpl.Client(net)
  await client.connect()
  results = `\n===Connected to ${net}.===\n===Sending check.===\n`
  resultField.value = results
  try {     
    const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
    let check_amount = amountField.value
    if (currencyField.value !=  "XRP") {
      check_amount = {
        "currency": currencyField.value,
        "value": amountField.value,
        "issuer": wallet.address  	
      }
    }
    const send_check_tx = {
      "TransactionType": "CheckCreate",
      "Account": wallet.address,
      "SendMax": check_amount,
      "Destination": destinationField.value
    }
    const check_prepared = await client.autofill(send_check_tx)
    const check_signed = wallet.sign(check_prepared)
    results = '\n===Sending ' + amountField.value + ' ' + currencyField.
     value + ' to ' +  destinationField.value + '.===\n'
    resultField.value += results
    const check_result = await client.submitAndWait(check_signed.tx_blob)
    if (check_result.result.meta.TransactionResult == "tesSUCCESS") {
      results += '===Transaction succeeded===\n\n'
      resultField.value += JSON.stringify(check_result.result, null, 2)
      xrpBalanceField.value = (await client.getXrpBalance(wallet.address))
    }
  } 
  catch (error) {
    results = `Error sending transaction: ${error}`
    resultField.value += results
  }
  finally {
    client.disconnect()
  }
} // end of sendCheck()

// *******************************************************
// ********************* Get Checks **********************
// *******************************************************

async function getChecks() {
  let net = getNet()
  const client = new xrpl.Client(net)
  await client.connect()   
  let results = `\n===Connected to ${net}.===\n===Getting account checks.===\n\n`
  resultField.value = results
  try {
    const check_objects = await client.request({
      "id": 5,
      "command": "account_objects",
      "account": accountAddressField.value,
      "ledger_index": "validated",
      "type": "check"
    })
    resultField.value += JSON.stringify(check_objects.result, null, 2)
  }  catch (error) {
    results = `Error getting checks: ${error}`
    resultField.value += results
  }
  finally {
    client.disconnect()
  }
} // End of getChecks()

// *******************************************************
// ********************  Cash Check **********************
// *******************************************************
      
async function cashCheck() {
  let net = getNet()
  const client = new xrpl.Client(net)
  await client.connect()
  results = `\n===Connected to ${net}.===\n===Cashing check.===\n`
  resultField.value = results
  try {
    const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
    let check_amount = amountField.value
    if (currencyField.value !=  "XRP") {
      check_amount = {
        "value": amountField.value,
        "currency": currencyField.value,
        "issuer": issuerField.value  	
      }
    }
    const cash_check_tx = {
      "TransactionType": "CheckCash",
      "Account": wallet.address,
      "Amount": check_amount,
      "CheckID": checkIdField.value
    }
    const cash_prepared = await client.autofill(cash_check_tx)
    const cash_signed = wallet.sign(cash_prepared)
    results = ' Receiving ' + amountField.value + ' ' + currencyField.value + '.\n'
    resultField.value += results
    const check_result = await client.submitAndWait(cash_signed.tx_blob)
    if (check_result.result.meta.TransactionResult == "tesSUCCESS") {
      results = '===Transaction succeeded===\n' + JSON.stringify(check_result.result, null, 2)
      resultField.value += results
    }
    xrpBalanceField.value = (await client.getXrpBalance(wallet.address))
  } catch (error) {
    results = `Error sending transaction: ${error}`
    resultField.value += results
  }
  finally {
    client.disconnect()
  }
} // end of cashCheck()

// *******************************************************
// **************** Cancel Check *************************
// *******************************************************

async function cancelCheck() {
  let net = getNet()
  const client = new xrpl.Client(net)
  await client.connect()
  results = `\n===Connected to ${net}.===\n===Cancelling check.===\n`
  resultField.value = results
  try {
    const wallet = xrpl.Wallet.fromSeed(accountSeedField.value)
    const cancel_check_tx = {
      "TransactionType": "CheckCancel",
      "Account": wallet.address,
      "CheckID": checkIdField.value
    }
    const cancel_prepared = await client.autofill(cancel_check_tx)
    const cancel_signed = wallet.sign(cancel_prepared)
    const check_result = await client.submitAndWait(cancel_signed.tx_blob)
    if (check_result.result.meta.TransactionResult == "tesSUCCESS") {
      results += `===Transaction succeeded===\n${check_result.result.meta.TransactionResult}`
      resultField.value = results
    } 
    xrpBalanceField.value = (await client.getXrpBalance(wallet.address))
  } catch (error) {
    results = `Error sending transaction: ${error}`
    resultField.value += results
  }
  finally {
    client.disconnect()
  }
} // end of cancelCheck()