@ethersphere/bee-js/dist/mjs/utils/headers.js

Javascript client for Bee

import { Types } from 'cafe-utility';
import { BeeError } from "./error.js";
import { convertEnvelopeToMarshaledStamp } from "./stamps.js";
import { BatchId, PublicKey, Reference } from "./typed-bytes.js";
export function readFileHeaders(headers) {
  const name = readContentDispositionFilename(headers['content-disposition']);
  const tagUid = readTagUid(headers['swarm-tag-uid']);
  const contentType = headers['content-type'] || undefined;
  return {
    name,
    tagUid,
    contentType
  };
}
function readContentDispositionFilename(header) {
  if (!header) {
    throw new BeeError('missing content-disposition header');
  }
  // Regex was found here
  // https://stackoverflow.com/questions/23054475/javascript-regex-for-extracting-filename-from-content-disposition-header
  const dispositionMatch = header.match(/filename\*?=['"]?(?:UTF-\d['"]*)?([^;\r\n"']*)['"]?;?/i);
  if (dispositionMatch && dispositionMatch.length > 0) {
    return dispositionMatch[1];
  }
  throw new BeeError('invalid content-disposition header');
}
function readTagUid(header) {
  if (!header) {
    return undefined;
  }
  return parseInt(header, 10);
}
export function prepareRequestHeaders(stamp, nullableOptions) {
  const headers = {};
  if (isEnvelopeWithBatchId(stamp)) {
    headers['swarm-postage-stamp'] = convertEnvelopeToMarshaledStamp(stamp).toHex();
  } else if (stamp) {
    stamp = new BatchId(stamp);
    headers['swarm-postage-batch-id'] = stamp.toHex();
  }
  if (!nullableOptions) {
    return headers;
  }
  const options = Types.asObject(nullableOptions);
  if (options.size) {
    headers['content-length'] = String(options.size);
  }
  if (options.contentType) {
    headers['content-type'] = String(options.contentType);
  }
  if (options.redundancyLevel) {
    headers['swarm-redundancy-level'] = String(options.redundancyLevel);
  }
  if (Types.isBoolean(options.act)) {
    headers['swarm-act'] = String(options.act);
  }
  if (Types.isBoolean(options.pin)) {
    headers['swarm-pin'] = String(options.pin);
  }
  if (Types.isBoolean(options.encrypt)) {
    headers['swarm-encrypt'] = options.encrypt.toString();
  }
  if (options.tag) {
    headers['swarm-tag'] = String(options.tag);
  }
  if (Types.isBoolean(options.deferred)) {
    headers['swarm-deferred-upload'] = options.deferred.toString();
  }
  if (options.redundancyStrategy) {
    headers['swarm-redundancy-strategy'] = String(options.redundancyStrategy);
  }
  if (Types.isBoolean(options.fallback)) {
    headers['swarm-redundancy-fallback-mode'] = options.fallback.toString();
  }
  if (options.timeoutMs) {
    headers['swarm-chunk-retrieval-timeout'] = String(options.timeoutMs);
  }
  if (options.indexDocument) {
    headers['swarm-index-document'] = String(options.indexDocument);
  }
  if (options.errorDocument) {
    headers['swarm-error-document'] = String(options.errorDocument);
  }
  if (options.actPublisher) {
    headers['swarm-act-publisher'] = new PublicKey(options.actPublisher).toCompressedHex();
  }
  if (options.actHistoryAddress) {
    headers['swarm-act-history-address'] = new Reference(options.actHistoryAddress).toHex();
  }
  if (options.actTimestamp) {
    headers['swarm-act-timestamp'] = String(options.actTimestamp);
  }
  if (options.actPublisher || options.actHistoryAddress || options.actTimestamp) {
    headers['swarm-act'] = 'true';
  }
  if (options.gasPrice) {
    headers['gas-price'] = String(options.gasPrice);
  }
  if (options.gasLimit) {
    headers['gas-limit'] = String(options.gasLimit);
  }
  return headers;
}
function isEnvelopeWithBatchId(value) {
  if (!Types.isObject(value)) {
    return false;
  }
  const envelope = value;
  return envelope.issuer !== undefined && envelope.index !== undefined && envelope.signature !== undefined && envelope.timestamp !== undefined && envelope.batchId !== undefined;
}