Stream HTTP to Storage

const folder = await storage.ensureFolderPath('finance/statements');

const response = await api.httpCall(
  {
    url: `https://bank.example.com/v2/statements/${api.input(
      'statementId',
    )}`,
    method: 'GET',
    headers: {
      'X-API-Key': (await vault.get('BANK_API_KEY')).revision.value,
    },
  },
  {
    responseType: 'storage',
    target: {
      parentStorageEntryId: folder.storageEntryId,
      name: `${api.input('statementId')}.csv`,
      contentTypeHint: 'text/csv',
      computeStats: 'sync',
      metadata: { source: 'bank-statements' },
    },
  },
);

if (!response.storage)
  api.throw(502, { upstreamStatus: response.status });
return response.storage.entry;

await api.httpCall(
  {
    url: 'https://signature.example.com/v1/documents',
    method: 'POST',
    headers: {
      Authorization: `Bearer ${
        (await vault.get('SIGNATURE_TOKEN')).revision.value
      }`,
    },
  },
  {
    requestType: 'storage',
    responseType: 'json',
    source: { storageEntryId: api.input('documentStorageEntryId') },
  },
);