82 lines
4.3 KiB
JavaScript
82 lines
4.3 KiB
JavaScript
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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import { utils as didUtils } from '@web5/dids';
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import { ReadableWebToNodeStream } from 'readable-web-to-node-stream';
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import { DateSort, DwnInterfaceName, DwnMethodName, Message, Records } from '@tbd54566975/dwn-sdk-js';
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export function blobToIsomorphicNodeReadable(blob) {
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return webReadableToIsomorphicNodeReadable(blob.stream());
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}
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export function getDwnServiceEndpointUrls(didUri, dereferencer) {
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return __awaiter(this, void 0, void 0, function* () {
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// Attempt to dereference the DID service with ID fragment #dwn.
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const dereferencingResult = yield dereferencer.dereference(`${didUri}#dwn`);
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if (dereferencingResult.dereferencingMetadata.error) {
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throw new Error(`Failed to dereference '${didUri}#dwn': ${dereferencingResult.dereferencingMetadata.error}`);
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}
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if (didUtils.isDwnDidService(dereferencingResult.contentStream)) {
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const { serviceEndpoint } = dereferencingResult.contentStream;
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const serviceEndpointUrls = typeof serviceEndpoint === 'string'
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// If the service endpoint is a string, format it as a single-element array.
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? [serviceEndpoint]
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: Array.isArray(serviceEndpoint) && serviceEndpoint.every(endpoint => typeof endpoint === 'string')
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// If the service endpoint is an array of strings, use it as is.
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? serviceEndpoint
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// If the service endpoint is neither a string nor an array of strings, return an empty array.
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: [];
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if (serviceEndpointUrls.length > 0) {
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return serviceEndpointUrls;
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}
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}
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// If the DID service with ID fragment #dwn was not found or is not valid, return an empty array.
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return [];
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});
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}
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export function getRecordAuthor(record) {
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return Records.getAuthor(record);
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}
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export function isRecordsWrite(obj) {
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// Validate that the given value is an object.
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if (!obj || typeof obj !== 'object' || obj === null)
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return false;
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// Validate that the object has the necessary properties of RecordsWrite.
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return ('message' in obj && typeof obj.message === 'object' && obj.message !== null &&
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'descriptor' in obj.message && typeof obj.message.descriptor === 'object' && obj.message.descriptor !== null &&
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'interface' in obj.message.descriptor && obj.message.descriptor.interface === DwnInterfaceName.Records &&
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'method' in obj.message.descriptor && obj.message.descriptor.method === DwnMethodName.Write);
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}
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/**
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* Get the CID of the given RecordsWriteMessage.
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*/
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export function getRecordMessageCid(message) {
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return Message.getCid(message);
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}
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/**
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* Get the pagination cursor for the given RecordsWriteMessage and DateSort.
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*
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* @param message The RecordsWriteMessage for which to get the pagination cursor.
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* @param dateSort The date sort that will be used in the query or subscription to which the cursor will be applied.
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*/
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export function getPaginationCursor(message, dateSort) {
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return __awaiter(this, void 0, void 0, function* () {
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const value = dateSort === DateSort.CreatedAscending || dateSort === DateSort.CreatedDescending ?
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message.descriptor.dateCreated : message.descriptor.datePublished;
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if (value === undefined) {
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throw new Error('The dateCreated or datePublished property is missing from the record descriptor.');
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}
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return {
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messageCid: yield getRecordMessageCid(message),
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value
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};
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});
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}
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export function webReadableToIsomorphicNodeReadable(webReadable) {
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return new ReadableWebToNodeStream(webReadable);
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}
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//# sourceMappingURL=utils.js.map
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