1 files changed, 62 insertions, 0 deletions
diff --git a/packages/taler-util/src/http-client/utils.ts b/packages/taler-util/src/http-client/utils.ts
new file mode 100644
index 000000000..ecb4d14c4
--- /dev/null
+++ b/packages/taler-util/src/http-client/utils.ts
@@ -0,0 +1,62 @@
+import { base64FromArrayBuffer } from "../base64.js";
+import { stringToBytes } from "../taler-crypto.js";
+import { AccessToken, TalerAuthentication } from "./types.js";
+
+/**
+ * Helper function to generate the "Authorization" HTTP header.
+ */
+export function makeBasicAuthHeader(username: string, password: string): string {
+  const auth = `${username}:${password}`;
+  const authEncoded: string = base64FromArrayBuffer(stringToBytes(auth));
+  return `Basic ${authEncoded}`;
+}
+
+/**
+ * rfc8959
+ * @param token 
+ * @returns 
+ */
+export function makeBearerTokenAuthHeader(token: AccessToken): string {
+  return `Bearer secret-token:${token}`;
+}
+
+/**
+ * https://bugs.gnunet.org/view.php?id=7949
+ */
+export function addPaginationParams(url: URL, pagination?: PaginationParams) {
+  if (!pagination) return;
+  if (pagination.timoutMs) {
+    url.searchParams.set("long_poll_ms", String(pagination.timoutMs))
+  }
+  if (pagination.offset) {
+    url.searchParams.set("start", pagination.offset)
+  }
+  if (pagination.limit) {
+    url.searchParams.set("delta", String(pagination.limit))
+  }
+}
+
+export type UserAndPassword = {
+  username: string,
+  password: string,
+}
+
+export type UserAndToken = {
+  username: string,
+  token: AccessToken,
+}
+
+export type PaginationParams = {
+  /**
+   * row identifier as the starting point of the query
+   */
+  offset?: string,
+  /**
+   * max number of element in the result response
+   */
+  limit?: number,
+  /**
+   * milliseconds the server should wait for at least one result to be shown
+   */
+  timoutMs?: number,
+}