fix(user): fix changeProfilePicture to overwrite existing files

* fix(user): fix changeProfilePicture

* use promises to simplify callbacks

* use fs.unlink to delete old picture once the profile is updated

Fixes #1415

* fix(user): fix changeProfilePicture

* use promises to simplify callbacks

* use fs.unlink to delete old picture once the profile is updated

* log file errors to console

Fixes #1415

* fix(user): fix changeProfilePicture

* use promises to simplify callbacks

* use fs.unlink to delete old picture once the profile is updated

* log file errors to console

* update error handler module to handle file upload errors

Fixes #1415

* fix(user): fix changeProfilePicture

* use promises to simplify callbacks

* use fs.unlink to delete old picture once the profile is updated

* log file errors to console

* update error handler module to handle file upload errors

Fixes #1415

Author: aanev

modules/core/server/controllers/errors.server.controller.js

@@ -1,5 +1,11 @@
 'use strict';
 
+/**
+ * Module dependencies
+ */
+var path = require('path'),
+  config = require(path.resolve('./config/config'));
+
 /**
  * Get unique error field name
  */
@@ -39,9 +45,17 @@ exports.getErrorMessage = function (err) {
       case 11001:
         message = getUniqueErrorMessage(err);
         break;
+      case 'LIMIT_FILE_SIZE':
+        message = 'Image too big. Please maximum ' + (config.uploads.profileUpload.limits.fileSize / (1024 * 1024)).toFixed(2) + ' Mb files.';
+        break;
+      case 'LIMIT_UNEXPECTED_FILE':
+        message = 'Missing `newProfilePicture` field';
+        break;
       default:
         message = 'Something went wrong';
     }
+  } else if (err.message && !err.errors) {
+    message = err.message;
   } else {
     for (var errName in err.errors) {
       if (err.errors[errName].message) {

modules/users/server/controllers/users/users.profile.server.controller.js

@@ -60,39 +60,82 @@ exports.changeProfilePicture = function (req, res) {
   var user = req.user;
   var upload = multer(config.uploads.profileUpload).single('newProfilePicture');
   var profileUploadFileFilter = require(path.resolve('./config/lib/multer')).profileUploadFileFilter;
+  var existingImageUrl;
 
   // Filtering to upload only images
   upload.fileFilter = profileUploadFileFilter;
 
   if (user) {
-    upload(req, res, function (uploadError) {
-      if (uploadError) {
-        return res.status(400).send({
-          message: 'Error occurred while uploading profile picture'
-        });
-      } else {
-        user.profileImageURL = config.uploads.profileUpload.dest + req.file.filename;
+    existingImageUrl = user.profileImageURL;
+    uploadImage()
+      .then(updateUser)
+      .then(deleteOldImage)
+      .then(login)
+      .then(function () {
+        res.json(user);
+      })
+      .catch(function (err) {
+        res.status(400).send(err);
+      });
+  } else {
+    res.status(400).send({
+      message: 'User is not signed in'
+    });
+  }
+
+  function uploadImage () {
+    return new Promise(function (resolve, reject) {
+      upload(req, res, function (uploadError) {
+        if (uploadError) {
+          reject(errorHandler.getErrorMessage(uploadError));
+        } else {
+          resolve();
+        }
+      });
+    });
+  }
 
-        user.save(function (saveError) {
-          if (saveError) {
-            return res.status(400).send({
-              message: errorHandler.getErrorMessage(saveError)
+  function updateUser () {
+    return new Promise(function (resolve, reject) {
+      user.profileImageURL = config.uploads.profileUpload.dest + req.file.filename;
+      user.save(function (err, theuser) {
+        if (err) {
+          reject(err);
+        } else {
+          resolve();
+        }
+      });
+    });
+  }
+
+  function deleteOldImage () {
+    return new Promise(function (resolve, reject) {
+      if (existingImageUrl !== User.schema.path('profileImageURL').defaultValue) {
+        fs.unlink(existingImageUrl, function (unlinkError) {
+          if (unlinkError) {
+            console.log(unlinkError);
+            reject({
+              message: 'Error occurred while deleting old profile picture'
             });
           } else {
-            req.login(user, function (err) {
-              if (err) {
-                res.status(400).send(err);
-              } else {
-                res.json(user);
-              }
-            });
+            resolve();
           }
         });
+      } else {
+        resolve();
       }
     });
-  } else {
-    res.status(400).send({
-      message: 'User is not signed in'
+  }
+
+  function login () {
+    return new Promise(function (resolve, reject) {
+      req.login(user, function (err) {
+        if (err) {
+          reject(err);
+        } else {
+          resolve();
+        }
+      });
     });
   }
 };