smom-dbis-138/packages/checkpoint-core/dist/iso20022/mapFromPaymentLeaf.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.mapPaymentLeafToCanonical = mapPaymentLeafToCanonical;
exports.canonicalToPacs008Xml = canonicalToPacs008Xml;
const ethers_1 = require("ethers");
const types_1 = require("./types");
const hashes_1 = require("./hashes");
/** Map Chain 138 payment leaf → MT-103 / pacs.008 equivalent canonical message. */
function mapPaymentLeafToCanonical(leaf) {
    const txHash = leaf.txHash;
    const instrBytes32 = (0, hashes_1.instructionIdFromTxHash)(txHash);
    const instrDisplay = `CHAIN138-${txHash.slice(2, 34)}`;
    const e2e = `E2E-${txHash.slice(2, 18)}`;
    const uetr = (0, hashes_1.uetrFromTxHash)(txHash);
    const usd = leaf.totalTransfersUsd ?? leaf.valueUsd ?? leaf.nativeValueUsd ?? '0';
    const currencyCode = leaf.tokenSymbol === 'ETH' || !leaf.token ? 'ETH' : 'USD';
    const purpose = `Chain138 settlement batch attestation; native value ${ethers_1.ethers.formatEther(leaf.value)} ETH; USD ref ${usd}`;
    const canonical = {
        msgType: 'chain138.synthetic',
        msgTypeCode: types_1.MSG_TYPE.CHAIN138_SYNTH,
        instructionId: instrDisplay,
        instructionIdBytes32: instrBytes32,
        endToEndId: e2e,
        endToEndIdHash: (0, hashes_1.hashShortUtf8)(e2e),
        msgId: `MSG-${txHash.slice(2, 14)}`,
        uetr,
        uetrBytes32: (0, hashes_1.uetrBytes32FromTxHash)(txHash),
        accountRefId: leaf.from,
        counterpartyRefId: leaf.to,
        debtorId: leaf.from,
        creditorId: leaf.to,
        purpose,
        settlementMethod: 'CLRG',
        categoryPurpose: 'CBFF',
        currencyCode,
        amountRaw: ethers_1.ethers.formatEther(leaf.value),
        amountSmallestUnit: leaf.value.toString(),
        tokenAddress: leaf.token,
        debtorRefHash: (0, hashes_1.hashShortUtf8)(`${leaf.from}|${leaf.from}`),
        creditorRefHash: (0, hashes_1.hashShortUtf8)(`${leaf.to}|${leaf.to}`),
        purposeHash: (0, hashes_1.hashShortUtf8)(purpose),
        chain138TxHash: txHash,
        valueDateIso: new Date(leaf.blockTimestamp * 1000).toISOString().slice(0, 10),
    };
    const payloadHash = ethers_1.ethers.keccak256(ethers_1.ethers.toUtf8Bytes(JSON.stringify({
        ...canonical,
        blockNumber: leaf.blockNumber,
        blockTimestamp: leaf.blockTimestamp,
        receiptHash: leaf.receiptHash ?? null,
        logCount: leaf.logCount ?? 0,
    })));
    return { ...canonical, payloadHash };
}
/** Minimal pacs.008.001 XML for OMNL store / audit (not full MX validation). */
function canonicalToPacs008Xml(c) {
    const cre = new Date().toISOString();
    return `<?xml version="1.0" encoding="UTF-8"?>
<Document xmlns="urn:iso:std:iso:20022:tech:xsd:pacs.008.001.08">
  <FIToFICstmrCdtTrf>
    <GrpHdr>
      <MsgId>${escapeXml(c.msgId)}</MsgId>
      <CreDtTm>${escapeXml(cre)}</CreDtTm>
      <NbOfTxs>1</NbOfTxs>
    </GrpHdr>
    <CdtTrfTxInf>
      <PmtId>
        <InstrId>${escapeXml(c.instructionId)}</InstrId>
        <EndToEndId>${escapeXml(c.endToEndId)}</EndToEndId>
        <TxId>${escapeXml(c.chain138TxHash)}</TxId>
      </PmtId>
      <IntrBkSttlmAmt Ccy="${escapeXml(c.currencyCode)}">${escapeXml(c.amountRaw)}</IntrBkSttlmAmt>
      <Dbtr><Nm>${escapeXml(c.debtorId)}</Nm></Dbtr>
      <DbtrAcct><Id><Othr><Id>${escapeXml(c.accountRefId)}</Id></Othr></Id></DbtrAcct>
      <Cdtr><Nm>${escapeXml(c.creditorId)}</Nm></Cdtr>
      <CdtrAcct><Id><Othr><Id>${escapeXml(c.counterpartyRefId)}</Id></Othr></Id></CdtrAcct>
      <RmtInf><Ustrd>${escapeXml(c.purpose)}</Ustrd></RmtInf>
      <SplmtryData>
        <PlcAndNm>Chain138Attestation</PlcAndNm>
        <Envlp>
          <UETR>${escapeXml(c.uetr)}</UETR>
          <PayloadHash>${escapeXml(c.payloadHash)}</PayloadHash>
          <MsgTypeCode>${c.msgTypeCode}</MsgTypeCode>
        </Envlp>
      </SplmtryData>
    </CdtTrfTxInf>
  </FIToFICstmrCdtTrf>
</Document>`;
}
function escapeXml(s) {
    return s
        .replace(/&/g, '&amp;')
        .replace(/</g, '&lt;')
        .replace(/>/g, '&gt;')
        .replace(/"/g, '&quot;');
}