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https://github.com/XRPLF/xrpl-dev-portal.git
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77 lines
3.1 KiB
JavaScript
77 lines
3.1 KiB
JavaScript
function CountXRPDifference(affected_nodes, address) {
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// Helper to find an account in an AffectedNodes array and see how much
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// its balance changed, if at all. Fortunately, each account appears at most
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// once in the AffectedNodes array, so we can return as soon as we find it.
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// Note: this reports the net balance change. If the address is the sender,
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// the transaction cost is deducted and combined with XRP sent/received
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for (let i=0; i<affected_nodes.length; i++) {
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if ((affected_nodes[i].hasOwnProperty("ModifiedNode"))) {
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// modifies an existing ledger entry
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let ledger_entry = affected_nodes[i].ModifiedNode
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if (ledger_entry.LedgerEntryType === "AccountRoot" &&
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ledger_entry.FinalFields.Account === address) {
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if (!ledger_entry.PreviousFields.hasOwnProperty("Balance")) {
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console.log("XRP balance did not change.")
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}
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// Balance is in PreviousFields, so it changed. Time for
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// high-precision math!
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const old_balance = new Big(ledger_entry.PreviousFields.Balance)
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const new_balance = new Big(ledger_entry.FinalFields.Balance)
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const diff_in_drops = new_balance.minus(old_balance)
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const xrp_amount = diff_in_drops.div(1e6)
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if (xrp_amount.gte(0)) {
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console.log("Received " + xrp_amount.toString() + " XRP.")
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return
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} else {
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console.log("Spent " + xrp_amount.abs().toString() + " XRP.")
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return
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}
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}
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} else if ((affected_nodes[i].hasOwnProperty("CreatedNode"))) {
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// created a ledger entry. maybe the account just got funded?
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let ledger_entry = affected_nodes[i].CreatedNode
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if (ledger_entry.LedgerEntryType === "AccountRoot" &&
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ledger_entry.NewFields.Account === address) {
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const balance_drops = new Big(ledger_entry.NewFields.Balance)
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const xrp_amount = balance_drops.div(1e6)
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console.log("Received " + xrp_amount.toString() + " XRP (account funded).")
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return
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}
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} // accounts cannot be deleted at this time, so we ignore DeletedNode
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}
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console.log("Did not find address in affected nodes.")
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return
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}
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function CountXRPReceived(tx, address) {
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if (tx.meta.TransactionResult !== "tesSUCCESS") {
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console.log("Transaction failed.")
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return
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}
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if (tx.transaction.TransactionType === "Payment") {
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if (tx.transaction.Destination !== address) {
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console.log("Not the destination of this payment.")
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return
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}
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if (typeof tx.meta.delivered_amount === "string") {
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const amount_in_drops = new Big(tx.meta.delivered_amount)
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const xrp_amount = amount_in_drops.div(1e6)
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console.log("Received " + xrp_amount.toString() + " XRP.")
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return
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} else {
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console.log("Received non-XRP currency.")
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return
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}
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} else if (["PaymentChannelClaim", "PaymentChannelFund", "OfferCreate",
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"CheckCash", "EscrowFinish"].includes(
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tx.transaction.TransactionType)) {
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CountXRPDifference(tx.meta.AffectedNodes, address)
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} else {
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console.log("Not a currency-delivering transaction type (" +
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tx.transaction.TransactionType + ").")
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}
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}
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