lots of refactoring again based on feedback. Changed the UI slightly and also fixed a small bug

app/controllers/import/gitlab_projects_controller.rb

@@ -3,6 +3,7 @@ class Import::GitlabProjectsController < Import::BaseController
 
   def new
     @namespace_id = project_params[:namespace_id]
+    @namespace_name = Namespace.find(project_params[:namespace_id]).name
     @path = project_params[:path]
   end
 
@@ -23,8 +24,8 @@ class Import::GitlabProjectsController < Import::BaseController
       )
     else
       redirect_to(
-        new_project_path,
-        alert: "Project could not be exported: #{@project.errors.full_messages.join(', ')}"
+        new_import_gitlab_project_path,
+        alert: "Project could not be imported: #{@project.errors.full_messages.join(', ')}"
       )
     end
   end
@@ -32,7 +33,7 @@ class Import::GitlabProjectsController < Import::BaseController
   private
 
   def file_is_valid?
-    project_params[:file].respond_to?(:read)
+    project_params[:file] && project_params[:file].respond_to?(:read)
   end
 
   def verify_gitlab_project_import_enabled

app/controllers/projects_controller.rb

@@ -7,7 +7,7 @@ class ProjectsController < Projects::ApplicationController
   before_action :assign_ref_vars, :tree, only: [:show], if: :repo_exists?
 
   # Authorize
-  before_action :authorize_admin_project!, only: [:edit, :update, :housekeeping, :download_export, :export]
+  before_action :authorize_admin_project!, only: [:edit, :update, :housekeeping, :download_export, :export, :remove_export]
   before_action :event_filter, only: [:show, :activity]
 
   layout :determine_layout
@@ -186,19 +186,38 @@ class ProjectsController < Projects::ApplicationController
   end
 
   def export
-    @project.add_export_job(current_user_id: current_user.id)
+    @project.add_export_job(current_user: current_user)
 
     redirect_to(
       edit_project_path(@project),
-      notice: "Project export started."
+      notice: "Project export started. A download link will be sent by e-mail."
     )
   end
 
   def download_export
+    export_project_path = @project.export_project_path
+
     if export_project_path
       send_file export_project_path, disposition: 'attachment'
     else
-      render_404
+      redirect_to(
+        edit_project_path(@project),
+        alert: "Project export link has expired. Please generate a new export from your project settings."
+      )
+    end
+  end
+
+  def remove_export
+    if @project.remove_exports
+      redirect_to(
+        edit_project_path(@project),
+        notice: "Project export has been deleted."
+      )
+    else
+      redirect_to(
+        edit_project_path(@project),
+        alert: "Project export could not be deleted."
+      )
     end
   end
 
@@ -264,8 +283,4 @@ class ProjectsController < Projects::ApplicationController
   def get_id
     project.repository.root_ref
   end
-
-  def export_project_path
-    Dir.glob("#{@project.export_path}/*export.tar.gz").max_by {|f| File.ctime(f)}
-  end
 end

app/helpers/projects_helper.rb

@@ -348,10 +348,4 @@ module ProjectsHelper
 
     message.strip.gsub(Gitlab.config.gitlab_shell.repos_path.chomp('/'), "[REPOS PATH]")
   end
-
-  def db_export_list
-    YAML.load_file(Gitlab::ImportExport.config_file)['project_tree'].map do |relation|
-      relation.is_a?(Hash) ? relation.keys.first.to_s : relation.to_s
-    end + ['notes', 'merge_request_diffs']
-  end
 end

app/models/project.rb

@@ -1100,8 +1100,8 @@ class Project < ActiveRecord::Base
     @errors = original_errors
   end
 
-  def add_export_job(current_user_id:)
-    job_id = ProjectExportWorker.perform_async(current_user_id, self.id)
+  def add_export_job(current_user:)
+    job_id = ProjectExportWorker.perform_async(current_user.id, self.id)
 
     if job_id
       Rails.logger.info "Export job started for project ID #{self.id} with job ID #{job_id}"
@@ -1113,4 +1113,13 @@ class Project < ActiveRecord::Base
   def export_path
     File.join(Gitlab::ImportExport.storage_path, path_with_namespace)
   end
+
+  def export_project_path
+    Dir.glob("#{export_path}/*export.tar.gz").max_by { |f| File.ctime(f) }
+  end
+
+  def remove_exports
+    _, status = Gitlab::Popen.popen(%W(find #{export_path} -not -path #{export_path} -delete))
+    status.zero?
+  end
 end

app/services/projects/create_service.rb

@@ -54,7 +54,7 @@ module Projects
 
       @project.import_start if @project.import?
 
-      after_create_actions if @project.persisted? && !@project.gitlab_project_import?
+      after_create_actions if @project.persisted?
 
       if @project.errors.empty?
         @project.add_import_job if @project.import?
@@ -80,16 +80,18 @@ module Projects
     def after_create_actions
       log_info("#{@project.owner.name} created a new project \"#{@project.name_with_namespace}\"")
 
+      unless @project.gitlab_project_import?
         @project.create_wiki if @project.wiki_enabled?
 
         @project.build_missing_services
 
         @project.create_labels
+      end
 
       event_service.create_project(@project, current_user)
       system_hook_service.execute_hooks_for(@project, :create)
 
-      unless @project.group
+      unless @project.group || @project.gitlab_project_import?
         @project.team << [current_user, :master, current_user]
       end
     end

app/views/import/gitlab_projects/new.html.haml

@@ -2,19 +2,17 @@
 - header_title "Projects", root_path
 %h3.page-title
   = icon('gitlab')
-  Import projects from GitLab
+  Import an exported GitLab project
 %hr
 
 = form_tag import_gitlab_project_path, class: 'form-horizontal', multipart: true do
   %p
-    Project will be imported to path
+    Project will be imported as
     %strong
-      #{@path}
+      #{@namespace_name}/#{@path}
 
   %p
-    To get started add your exported project file below, then you will be redirected to the new project page and the project will appear once the import is done.
-  %p
-    You can generate a new export file from your project settings.
+    To move or copy an entire GitLab project from another GitLab installation to this one, navigate to the original project's settings page, generate an export file, and upload it here.
   .form-group
     = hidden_field_tag :namespace_id, @namespace_id
     = hidden_field_tag :path, @path
@@ -24,4 +22,4 @@
       = file_field_tag :file, class: ''
 
   .form-actions
-    = submit_tag 'Continue to the next step', class: 'btn btn-create'
+    = submit_tag 'Import project', class: 'btn btn-create'

app/views/notify/project_was_not_exported_email.html.haml

@@ -3,5 +3,7 @@
 %p
   The errors we encountered were:
 
-  %h3{style: "background: black; color: red;"}
-    #{@errors}
+  %ul
+  - @errors.each do |error|
+    %li
+      error

app/views/notify/project_was_not_exported_email.text.erb

@@ -2,4 +2,5 @@ Project <%= @project.name %> couldn't be exported.
 
 The errors we encountered were:
 
-<%= @errors %>
+- @errors.each do |error|
+<%= error %>
\ No newline at end of file

app/views/projects/edit.html.haml

@@ -126,30 +126,35 @@
         Export project
       %p.append-bottom-0
         %p
-          Generates a compressed export file of the project and sends a link to download the export.
+          Export this project with all its related data in order to move your project to a new GitLab instance. Once the export is finished, you can import the file from the "New Project" page.
+        %p
+          Once the exported file is ready, you will receive a notification email with a download link.
+
     .col-lg-9
 
+      - if @project.export_project_path
+        = link_to 'Download export',  download_export_namespace_project_path(@project.namespace, @project),
+                method: :get, class: "btn btn-default"
+        = link_to 'Delete export',  remove_export_namespace_project_path(@project.namespace, @project),
+                method: :post, class: "btn btn-default"
+      - else
         = link_to 'Export project', export_namespace_project_path(@project.namespace, @project),
                 method: :post, class: "btn btn-default"
 
-      %p.append-bottom-0
-        %p
-          .row.prepend-top-default
-            Clicking on Export project, will produce a compressed file that will be sent as a link to your registered e-mail address.
-
       .bs-callout.bs-callout-info
         %p.append-bottom-0
           %p
             The following items will be exported:
           %ul
-            %li Project and wiki repository
+            %li Project and wiki repositories
             %li Project uploads
-            %li DB items, including configuration
+            %li Project configuration including web hooks and services
+            %li Issues with comments, merge requests with diffs and comments, labels, milestones, snippets, and other project entities
+          %p
+            The following items will NOT be exported:
           %ul
-              - db_export_list.each do |export_relation|
-                %li
-                  %code #{export_relation}
-
+            %li Build traces and artifacts
+            %li LFS objects
   %hr
   - if can? current_user, :archive_project, @project
     .row.prepend-top-default

app/views/projects/imports/show.html.haml

@@ -7,7 +7,7 @@
         Forking in progress.
       - else
         Import in progress.
-    - unless @project.forked? || @project.gitlab_project_import?
+    - if @project.external_import?
       %p.monospace git clone --bare #{@project.safe_import_url}
     %p Please wait while we import the repository for you. Refresh at will.
     :javascript

app/views/projects/new.html.haml

@@ -93,7 +93,7 @@
               - if gitlab_project_import_enabled?
                 = link_to new_import_gitlab_project_path, class: 'btn import_gitlab_project project-submit' do
                   %i.fa.fa-gitlab
-                  %span GitLab project
+                  %span GitLab export
 
           .js-toggle-content.hide
             = render "shared/import_form", f: f
@@ -124,19 +124,31 @@
     e.preventDefault();
     var import_modal = $(this).next(".modal").show();
   });
+
   $('.modal-header .close').bind('click', function() {
     $(".modal").hide();
   });
+
   $('.import_gitlab_project').bind('click', function() {
     var _href = $("a.import_gitlab_project").attr("href");
     $(".import_gitlab_project").attr("href", _href + '?namespace_id=' + $("#project_namespace_id").val() + '&path=' + $("#project_path").val());
   });
+
   $('.import_gitlab_project').attr('disabled',true)
   $('.import_gitlab_project').attr('title', 'Project path required.');
+
+  $('.import_gitlab_project').click(function( event ) {
+    if($('.import_gitlab_project').attr('disabled')) {
+      event.preventDefault();
+      new Flash("Project path required.", "alert");
+    }
+  });
+
   $('#project_path').keyup(function(){
     if($(this).val().length !=0) {
       $('.import_gitlab_project').attr('disabled', false);
       $('.import_gitlab_project').attr('title','');
+      $(".flash-container").html("")
     } else {
       $('.import_gitlab_project').attr('disabled',true);
       $('.import_gitlab_project').attr('title', 'Project path required.');

config/routes.rb

@@ -455,6 +455,7 @@ Rails.application.routes.draw do
         post :toggle_star
         post :markdown_preview
         post :export
+        post :remove_export
         get :download_export
         get :autocomplete_sources
         get :activity

lib/gitlab/import_export/importer.rb

@@ -15,7 +15,7 @@ module Gitlab
         if check_version! && [project_tree, repo_restorer, wiki_restorer, uploads_restorer].all?(&:restore)
           project_tree.restored_project
         else
-          raise Projects::ImportService::Error.new, @shared.errors.join(', ')
+          raise Projects::ImportService::Error.new(@shared.errors.join(', '))
         end
       end
 

lib/gitlab/import_export/repo_restorer.rb

@@ -11,7 +11,8 @@ module Gitlab
       end
 
       def restore
-        return false unless File.exist?(@path_to_bundle) || wiki?
+        return true if wiki?
+        return false unless File.exist?(@path_to_bundle)
 
         FileUtils.mkdir_p(path_to_repo)
 

lib/gitlab/import_sources.rb

@@ -21,7 +21,7 @@ module Gitlab
           'Google Code'     => 'google_code',
           'FogBugz'         => 'fogbugz',
           'Repo by URL'     => 'git',
-          'GitLab project'  => 'gitlab_project'
+          'GitLab export' => 'gitlab_export'
         }
       end
 

spec/features/projects/import_export/import_file_spec.rb

@@ -25,14 +25,14 @@ feature 'project import', feature: true, js: true do
 
     select2('2', from: '#project_namespace_id')
     fill_in :project_path, with:'test-project-path', visible: true
-    click_link 'GitLab project'
+    click_link 'GitLab export'
 
     expect(page).to have_content('GitLab project export')
     expect(URI.parse(current_url).query).to eq('namespace_id=2&path=test-project-path')
 
     attach_file('file', file)
 
-    click_on 'Continue to the next step' # import starts
+    click_on 'Import project' # import starts
 
     expect(project).not_to be_nil
     expect(project.issues).not_to be_empty