@bithomp/xrpl-api/lib/parse/outcome/mptoken_changes.js

A Bithomp JavaScript/TypeScript library for interacting with the XRP Ledger

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseMPTokenChanges = parseMPTokenChanges;
const bignumber_js_1 = __importDefault(require("bignumber.js"));
const common_1 = require("../../common");
function parseMPTokenChanges(tx) {
    return new MPTokenChanges(tx).call();
}
class MPTokenChanges {
    constructor(tx) {
        this.tx = tx;
        this.changes = {};
    }
    call() {
        if (this.hasAffectedNodes() === false) {
            return this.changes;
        }
        this.parseAffectedNodes();
        return this.changes;
    }
    hasAffectedNodes() {
        if (this.tx.meta?.AffectedNodes === undefined) {
            return false;
        }
        if (this.tx.meta?.AffectedNodes?.length === 0) {
            return false;
        }
        return true;
    }
    addChange(mptIssuanceID, account, change) {
        if (!this.changes[mptIssuanceID]) {
            this.changes[mptIssuanceID] = {};
        }
        this.changes[mptIssuanceID][account] = (0, common_1.removeUndefined)(change);
    }
    parseAffectedNodes() {
        for (const affectedNode of this.tx.meta.AffectedNodes) {
            const node = affectedNode.CreatedNode || affectedNode.ModifiedNode || affectedNode.DeletedNode;
            if (node?.LedgerEntryType === "MPToken" && node?.LedgerIndex) {
                if (affectedNode.CreatedNode) {
                    const mptIssuanceID = node.NewFields.MPTokenIssuanceID;
                    const account = node.NewFields.Account;
                    this.addChange(mptIssuanceID, account, {
                        status: "added",
                        flags: node.NewFields.Flags,
                        mptIssuanceID,
                        account,
                        amount: node.NewFields.MPTAmount,
                    });
                }
                if (affectedNode.ModifiedNode) {
                    const mptIssuanceID = node.FinalFields.MPTokenIssuanceID;
                    const account = node.FinalFields.Account;
                    let amountChange = new bignumber_js_1.default(node.FinalFields.MPTAmount ?? 0)
                        .minus(node.PreviousFields.MPTAmount ?? 0)
                        .toString();
                    if (amountChange === "0") {
                        amountChange = undefined;
                    }
                    this.addChange(mptIssuanceID, account, {
                        status: "modified",
                        flags: node.FinalFields.Flags,
                        mptIssuanceID,
                        account,
                        amount: node.FinalFields.MPTAmount,
                        amountChange,
                        flagsChange: node.PreviousFields.Flags,
                    });
                }
                if (affectedNode.DeletedNode) {
                    const mptIssuanceID = node.FinalFields.MPTokenIssuanceID;
                    const account = node.FinalFields.Account;
                    this.addChange(mptIssuanceID, account, {
                        status: "removed",
                        flags: node.FinalFields.Flags,
                        mptIssuanceID,
                        account,
                        amount: node.FinalFields.MPTAmount,
                    });
                }
            }
        }
    }
}