mv widget js from out of subdir

templates/widget/fetchPoWConfig.ts

@@ -0,0 +1,44 @@
+/*
+ * mCaptcha is a PoW based DoS protection software.
+ * This is the frontend web component of the mCaptcha system
+ * Copyright © 2021 Aravinth Manivnanan <realaravinth@batsense.net>.
+ *
+ * Use of this source code is governed by Apache 2.0 or MIT license.
+ * You shoud have received a copy of MIT and Apache 2.0 along with
+ * this program. If not, see <https://spdx.org/licenses/MIT.html> for
+ * MIT or <http://www.apache.org/licenses/LICENSE-2.0> for Apache.
+ */
+
+import genJsonPayload from "../utils/genJsonPayload";
+import * as CONST from "./const";
+
+type GetConfigPayload = {
+  key: string;
+};
+
+export type PoWConfig = {
+  string: string;
+  difficulty_factor: number;
+  salt: string;
+};
+
+/**
+ * fetch proof-of-work configuration
+ * @returns {PoWConfig} pow config
+ * */
+export const fetchPoWConfig = async (): Promise<PoWConfig> => {
+  const payload: GetConfigPayload = {
+    key: CONST.sitekey(),
+  };
+
+  const res = await fetch(CONST.ROUTES.getConfig, genJsonPayload(payload));
+  if (res.ok) {
+    const config: PoWConfig = await res.json();
+    return config;
+  } else {
+    const err = await res.json();
+    throw new Error(err);
+  }
+};
+
+export default fetchPoWConfig;