[feat] Ability to change username

As there is no user management at the moment.

extra/change-username.js

@@ -0,0 +1,65 @@
+console.log("== Uptime Kuma Change Username Tool ==");
+
+const Database = require("../server/database");
+const { R } = require("redbean-node");
+const readline = require("readline");
+const { initJWTSecret } = require("../server/util-server");
+const User = require("../server/model/user");
+const args = require("args-parser")(process.argv);
+const rl = readline.createInterface({
+    input: process.stdin,
+    output: process.stdout
+});
+
+const main = async () => {
+    console.log("Connecting the database");
+    Database.init(args);
+    await Database.connect(false, false, true);
+
+    try {
+        // No need to actually reset the password for testing, just make sure no connection problem. It is ok for now.
+        if (!process.env.TEST_BACKEND) {
+            const user = await R.findOne("user");
+            if (! user) {
+                throw new Error("user not found, have you installed?");
+            }
+
+            console.log("Found user: " + user.username);
+            let newUsername = await question("New username: ");
+            await User.updateUsername(user.id, newUsername);
+
+            // Reset all sessions by reset jwt secret
+            await initJWTSecret();
+
+            console.log("Username change successfully.");
+        }
+    } catch (e) {
+        console.error("Error: " + e.message);
+    }
+
+    await Database.close();
+    rl.close();
+
+    console.log("Finished.");
+};
+
+/**
+ * Ask question of user
+ * @param {string} question Question to ask
+ * @returns {Promise<string>} Users response
+ */
+function question(question) {
+    return new Promise((resolve) => {
+        rl.question(question, (answer) => {
+            resolve(answer);
+        });
+    });
+}
+
+if (!process.env.TEST_BACKEND) {
+    main();
+}
+
+module.exports = {
+    main,
+};

package.json

@@ -52,6 +52,7 @@
         "setup": "git checkout 1.23.13 && npm ci --production && npm run download-dist",
         "download-dist": "node extra/download-dist.js",
         "mark-as-nightly": "node extra/mark-as-nightly.js",
+        "change-username": "node extra/change-username.js",
         "reset-password": "node extra/reset-password.js",
         "remove-2fa": "node extra/remove-2fa.js",
         "simple-dns-server": "node extra/simple-dns-server.js",