MOBILE-1654 files: Notify if files cannot be uploaded

www/addons/files/controllers/index.js

@@ -27,11 +27,15 @@ angular.module('mm.addons.files')
     $scope.canDownload = $mmSite.canDownloadFiles;
 
     $scope.add = function() {
-        if (!$mmApp.isOnline()) {
-            $mmUtil.showErrorModal('mma.files.errormustbeonlinetoupload', true);
-        } else {
-            $state.go('site.files-upload');
-        }
+        $mmaFiles.versionCanUploadFiles().then(function(canUpload) {
+            if (!canUpload) {
+                $mmUtil.showErrorModal('mma.files.erroruploadnotworking', true);
+            } else if (!$mmApp.isOnline()) {
+                $mmUtil.showErrorModal('mma.files.errormustbeonlinetoupload', true);
+            } else {
+                $state.go('site.files-upload');
+            }
+        });
     };
 
 });

www/addons/files/controllers/list.js

@@ -84,10 +84,14 @@ angular.module('mm.addons.files')
 
     // When we are in the root of the private files we can add more files.
     $scope.add = function() {
-        if (!$mmApp.isOnline()) {
-            $mmUtil.showErrorModal('mma.files.errormustbeonlinetoupload', true);
-        } else {
-            $state.go('site.files-upload', {root: root, path: path});
-        }
+        $mmaFiles.versionCanUploadFiles().then(function(canUpload) {
+            if (!canUpload) {
+                $mmUtil.showErrorModal('mma.files.erroruploadnotworking', true);
+            } else if (!$mmApp.isOnline()) {
+                $mmUtil.showErrorModal('mma.files.errormustbeonlinetoupload', true);
+            } else {
+                $state.go('site.files-upload', {root: root, path: path});
+            }
+        });
     };
 });

www/addons/files/lang/en.json

@@ -16,6 +16,7 @@
     "errornoapp": "You don't have an app installed to perform this action.",
     "errorreadingfile": "Error reading file.",
     "errorreceivefilenosites": "There are no sites stored. Please add a site before trying to upload a file.",
+    "erroruploadnotworking": "Unfortunately it is currently not possible to upload files to your site.",
     "errorwhiledownloading": "An error occured while trying to download the file.",
     "errorwhileuploading": "An error occured during the file upload.",
     "errorwhilerecordingaudio": "An error occured while trying to record audio.",

www/addons/files/services/files.js

@@ -51,6 +51,26 @@ angular.module('mm.addons.files')
         return $mmSite.wsAvailable('core_files_get_files');
     };
 
+    /**
+     * Check the Moodle version in order to check if upload files is working.
+     *
+     * @module mm.addons.files
+     * @ngdoc method
+     * @name $mmaFiles#versionCanUploadFiles
+     * @param  {String} [siteId] Id of the site to check. If not defined, use current site.
+     * @return {Promise} Resolved with true if WS is working, false otherwise.
+     */
+    self.versionCanUploadFiles = function(siteId) {
+        siteId = siteId || $mmSite.getId();
+
+        return $mmSitesManager.getSite(siteId).then(function(site) {
+            var version = site.getInfo().version;
+
+            // Uploading is not working right now for Moodle 3.1.0 (2016052300).
+            return version && (parseInt(version) != 2016052300);
+        });
+    };
+
     /**
      * Checks if there is a new file received in iOS. If more than one file is found, treat only the first one.
      * The file returned is marked as "treated" and will be deleted in the next execution.