📃 feat: add list-balances, remove-user, and improve User scripts (#1418)

* Refactoring opening of DB to config/helpers.js

* Adding two user scripts:

- 'delete-user' to remove a user definitely
- 'list-balances' to show the balances of all the users

config/delete-user.js

@@ -0,0 +1,48 @@
+const path = require('path');
+require('module-alias')({ base: path.resolve(__dirname, '..', 'api') });
+const { connectWithTimeout, askQuestion, silentExit } = require('./helpers');
+const User = require('~/models/User');
+
+(async () => {
+  await connectWithTimeout();
+
+  /**
+   * Show the welcome / help menu
+   */
+  console.purple('---------------');
+  console.purple('Deleting a user');
+  console.purple('---------------');
+
+  let email = '';
+  if (process.argv.length >= 3) {
+    email = process.argv[2];
+  } else {
+    email = await askQuestion('Email:');
+  }
+  let user = await User.findOne({ email: email });
+  if (user !== null) {
+    if ((await askQuestion(`Delete user ${user}?`)) === 'y') {
+      user = await User.findOneAndDelete({ _id: user._id });
+      if (user !== null) {
+        console.yellow(`Deleted user ${user}`);
+      } else {
+        console.yellow(`Couldn't delete user with email ${email}`);
+      }
+    }
+  } else {
+    console.yellow(`Didn't find user with email ${email}`);
+  }
+
+  silentExit(0);
+})();
+
+process.on('uncaughtException', (err) => {
+  if (!err.message.includes('fetch failed')) {
+    console.error('There was an uncaught error:');
+    console.error(err);
+  }
+
+  if (!err.message.includes('fetch failed')) {
+    process.exit(1);
+  }
+});