complementary deletions on user delete

Server/controllers/authController.js

@@ -238,7 +238,7 @@ const resetPasswordController = async (req, res, next) => {
 const deleteUserController = async (req, res, next) => {
   try {
     // Validate user
-    await editUserParamValidation.validateAsync(req.params);
+    await editUserParamValidation.userDeleteValidation(req.params.userId);
 
     // Check if the user exists
     const user = await req.db.getUserById(req.params.userId);
@@ -246,7 +246,19 @@ const deleteUserController = async (req, res, next) => {
       throw new Error(errorMessages.DB_USER_NOT_FOUND);
     }
 
-    // Delete the user
+    // Step 1: Find all monitors associated with the user
+    const monitors = await req.db.getMonitorsByUserId(req.params.userId);
+
+    // Step 2: For each monitor, delete all associated checks and alerts
+    for (const monitor of monitors) {
+      await req.db.deleteChecks(monitor.id);
+      await req.db.deleteAlertByMonitorId(monitor.id);
+    }
+
+    // Step 3: Delete all monitors associated with the user
+    await req.db.deleteMonitorsByUserId(req.params.userId);
+
+    // Step 4: Finally, delete the user
     await req.db.deleteUser(req.params.userId);
 
     return res.status(200).json({

Server/db/MongoDB.js

@@ -303,6 +303,21 @@ const deleteAllMonitors = async (req, res) => {
   }
 };
 
+/**
+ * Delete all monitors associated with a user ID
+ * @async
+ * @param {string} userId - The ID of the user whose monitors are to be deleted.
+ * @returns {Promise} A promise that resolves when the operation is complete.
+ */
+const deleteMonitorsByUserId = async (userId) => {
+  try {
+    const result = await Monitor.deleteMany({ userId: userId });
+    return result;
+  } catch (error) {
+    throw error;
+  }
+};
+
 /**
  * Edit a monitor by ID
  * @async
@@ -539,4 +554,5 @@ module.exports = {
   editAlert,
   deleteAlert,
   deleteAlertByMonitorId,
+  deleteMonitorsByUserId
 };

Server/validation/joi.js

@@ -43,6 +43,10 @@ const newPasswordValidation = joi.object({
   confirm: joi.string(),
 });
 
+const userDeleteValidation = joi.object({
+  userId: joi.string().required(),
+});
+
 //****************************************
 // Monitors
 //****************************************