Client and server-side fixes

assets/javascripts/discourse/controllers/admin-wizards-transfer.js.es6

@@ -79,7 +79,11 @@ export default Ember.Controller.extend({
       }
 
       if (maxFileSize < event.target.files[0].size) {
-        this.set('importMessage', I18n.t('admin.wizard.transfer.import.file_size_error'));
+        this.setProperties({
+          importMessage: I18n.t('admin.wizard.transfer.import.file_size_error'),
+          filePath: null
+        });
+        $('#file-url').val('');
       } else {
         this.set('filePath', event.target.files[0]);
       }
@@ -99,7 +103,7 @@ export default Ember.Controller.extend({
           contentType: false,
         }).then(result => {
           if (result.error) {
-            this.set('error', result.error);
+            this.set('importMessage', result.error);
           } else {
             this.setProperties({
               successIds: result.success,

assets/javascripts/discourse/templates/admin-wizards-transfer.hbs

@@ -31,16 +31,17 @@
 
   <div class="controls">
     {{input id='file-url' type="file" change=(action "setFilePath")}}
-    {{d-button id="import-button"
-               class="btn btn-primary side"
-               label="admin.wizard.transfer.import.label"
-               action=(action "import")}}
     
     {{#if importMessage}}
       <div class="import-message">
         {{importMessage}}
       </div>
     {{/if}}
+    
+    {{d-button id="import-button"
+               class="btn btn-primary side"
+               label="admin.wizard.transfer.import.label"
+               action=(action "import")}}
   </div>
   
   {{#if hasLogs}}

assets/stylesheets/wizard_custom_admin.scss

@@ -500,6 +500,10 @@
   flex-direction: column;
 }
 
+.import-message {
+  margin: 10px 0;
+}
+
 .import-logs {
   margin-top: 20px;
   

config/locales/client.en.yml

@@ -226,7 +226,7 @@ en:
             success: 'Wizard "{{id}}" saved successfully'
             failure: 'Wizard "{{id}}" could not be saved'
             no_file: "Please choose a file to import"
-            file_size_error: "The file size is too big"
+            file_size_error: "The file must be JSON and 512kb or less"
 
   wizard_js:
     location:

controllers/transfer.rb

@@ -11,7 +11,7 @@ class CustomWizard::TransferController < ::ApplicationController
     wizard_objects = []
 
     if wizards.nil?
-      render json: {error: I18n.t('wizard.export.error.select_one')}
+      render json: { error: I18n.t('wizard.export.error.select_one') }
       return
     end
 
@@ -19,22 +19,17 @@ class CustomWizard::TransferController < ::ApplicationController
       wizard_objects.push(PluginStore.get('custom_wizard', w.tr('-', '_')))
     end
 
-    send_data wizard_objects.to_json, type: "application/json", disposition: 'attachment', filename: 'wizards.json'
-  end
-
-  def is_json(string)
-    begin
-      !!JSON.parse(string)
-    rescue
-      false
-    end
+    send_data wizard_objects.to_json,
+      type: "application/json",
+      disposition: 'attachment',
+      filename: 'wizards.json'
   end
 
   def import
     file = File.read(params['file'].tempfile)
 
     if file.nil?
-      render json: {error: I18n.t('wizard.import.error.no_file')}
+      render json: { error: I18n.t('wizard.import.error.no_file') }
       return
     end
 
@@ -42,35 +37,38 @@ class CustomWizard::TransferController < ::ApplicationController
     maxFileSize = 512 * 1024
 
     if maxFileSize < fileSize
-      render json: {error: I18n.t('wizard.import.error.file_large')}
+      render json: { error: I18n.t('wizard.import.error.file_large') }
       return
     end
     
-    unless is_json file
-      render json: {error: I18n.t('wizard.import.error.invalid_json')}
+    begin
+      jsonObject = JSON.parse file
+    rescue JSON::ParserError
+      render json: { error: I18n.t('wizard.import.error.invalid_json') }
       return
     end
     
-    jsonObject = JSON.parse file
     countValid = 0
     success_ids = []
     failed_ids = []
+    
     jsonObject.each do |o|
-      # validate whether the given json is a valid "wizard"
-      next unless CustomWizard::Template.new(o)
+      if !CustomWizard::Template.new(o)
+        failed_ids.push o['id']
+        next
+      end
+      
       countValid += 1
       pluginStoreEntry = PluginStore.new 'custom_wizard'
-      #plugin store detects the json object type and sets proper `type_name` for the entry
-      # this condition helps us avoid updating an existing wizard instead of adding a new one
       saved = pluginStoreEntry.set(o['id'], o) unless pluginStoreEntry.get(o['id'])
       success_ids.push o['id'] if !!saved
       failed_ids.push o['id'] if !saved
     end
 
     if countValid == 0
-      render json: {error: I18n.t('wizard.import.error.no_valid_wizards')}
+      render json: { error: I18n.t('wizard.import.error.no_valid_wizards') }
     else
-      render json: {success: success_ids, failed: failed_ids}
+      render json: { success: success_ids, failed: failed_ids }
     end
   end
 end