refactor: squash commits

backend/utils/controller-api.js

@@ -0,0 +1,19 @@
+const axios = require("axios");
+const fs = require("fs");
+
+const baseURL = process.env.ZU_CONTROLLER_ENDPOINT || "http://localhost:9993/";
+
+var token;
+if (process.env.ZU_CONTROLLER_TOKEN) {
+  token = process.env.ZU_CONTROLLER_TOKEN;
+} else {
+  token = fs.readFileSync("/var/lib/zerotier-one/authtoken.secret", "utf8");
+}
+
+module.exports = axios.create({
+  baseURL: baseURL,
+  responseType: "json",
+  headers: {
+    "X-ZT1-Auth": token,
+  },
+});