Merge branch 'google-code-import' into 'master'

Import projects from Google Code.

Resolves #1257.

Issue import logic almost entirely taken from https://gitlab.com/o9000/google-code-to-gitlab ( :hearts: @o9000).

### To do

- [x] List projects from Google Takeout file
- [x] Import Git repository
- [x] Import issues
- [x] Link to correct attachment URL (https://code.google.com/p/support-tools/issues/detail?id=50)
- [x] Handle deleted attachments
- [x] Handle blockedOn attribute
- [x] Add directions on how to get data from Google Takeout

### Import instructions

![Screen_Shot_2015-04-03_at_16.02.21](https://gitlab.com/gitlab-org/gitlab-ce/uploads/4a87038035fbad9441cf613b8cdcc690/Screen_Shot_2015-04-03_at_16.02.21.png)

### Imported issue

![Screen_Shot_2015-04-03_at_16.25.49](https://gitlab.com/gitlab-org/gitlab-ce/uploads/b2c2eaf5ecfcf57b3c48511eb5d26db4/Screen_Shot_2015-04-03_at_16.25.49.png)

See merge request !471

3 files changed, 129 insertions, 0 deletions

diff --git a/app/views/import/google_code/new.html.haml b/app/views/import/google_code/new.html.haml
new file mode 100644
index 00000000000..ce78fec205f
--- /dev/null
+++ b/app/views/import/google_code/new.html.haml
@@ -0,0 +1,60 @@
+%h3.page-title
+  %i.fa.fa-google
+  Import projects from Google Code
+%hr
+
+= form_tag callback_import_google_code_path, class: 'form-horizontal', multipart: true do
+  %p
+    Follow the steps below to export your Google Code project data. 
+    In the next step, you'll be able to select the projects you want to import.
+  %ol
+    %li
+      %p
+        Go to
+        #{link_to "Google Takeout", "https://www.google.com/settings/takeout", target: "_blank"}.
+    %li
+      %p
+        Make sure you're logged into the account that owns the projects you'd like to import.
+    %li
+      %p
+        Click the <strong>Select none</strong> button on the right, since we only need "Google Code Project Hosting".
+    %li
+      %p
+        Scroll down to <strong>Google Code Project Hosting</strong> and enable the switch on the right.
+    %li
+      %p
+        Choose <strong>Next</strong> at the bottom of the page.
+    %li
+      %p
+        Leave the "File type" and "Delivery method" options on their default values.
+    %li
+      %p
+        Choose <strong>Create archive</strong> and wait for archiving to complete.
+    %li
+      %p
+        Click the <strong>Download</strong> button and wait for downloading to complete.
+    %li
+      %p
+        Find the downloaded ZIP file and decompress it.
+    %li
+      %p
+        Find the newly extracted <code>Takeout/Google Code Project Hosting/GoogleCodeProjectHosting.json</code> file.
+    %li
+      %p
+        Upload <code>GoogleCodeProjectHosting.json</code> here:
+      %p
+        %input{type: "file", name: "dump_file", id: "dump_file"}
+    %li
+      %p
+        Do you want to customize how Google Code email addresses and usernames are imported into GitLab?
+      %p
+        = label_tag :create_user_map_0 do
+          = radio_button_tag :create_user_map, 0, true
+          No, directly import the existing email addresses and usernames.
+      %p
+        = label_tag :create_user_map_1 do
+          = radio_button_tag :create_user_map, 1, false
+          Yes, let me map Google Code users to full names or GitLab users.
+    %li
+      %p
+        = submit_tag 'Continue to the next step', class: "btn btn-create"
diff --git a/app/views/import/google_code/new_user_map.html.haml b/app/views/import/google_code/new_user_map.html.haml
new file mode 100644
index 00000000000..d55fcfc97a8
--- /dev/null
+++ b/app/views/import/google_code/new_user_map.html.haml
@@ -0,0 +1,20 @@
+%h3.page-title
+  %i.fa.fa-google
+  Import projects from Google Code
+%hr
+
+= form_tag create_user_map_import_google_code_path, class: 'form-horizontal' do
+  %p
+    Customize how Google Code email addresses and usernames are imported into GitLab.
+    In the next step, you'll be able to select the projects you want to import.
+  %p 
+    The user map is a JSON document mapping Google Code users (as keys) to the way they will be imported into GitLab (as values). By default the username is masked to ensure users' privacy.
+  %p
+    To map a Google Code user to a full name or GitLab user, simply replace the value, e.g. <code>"johnsmith@gmail.com": "John Smith"</code> or <code>"johnsmith@gmail.com": "@johnsmith"</code>. Be sure to preserve the surrounding double quotes and other punctuation.
+
+  .form-group
+    .col-sm-12
+      = text_area_tag :user_map, JSON.pretty_generate(@user_map), class: 'form-control', rows: 15
+
+  .form-actions
+    = submit_tag 'Continue to the next step', class: "btn btn-create"
diff --git a/app/views/import/google_code/status.html.haml b/app/views/import/google_code/status.html.haml
new file mode 100644
index 00000000000..2013b8c03c6
--- /dev/null
+++ b/app/views/import/google_code/status.html.haml
@@ -0,0 +1,49 @@
+%h3.page-title
+  %i.fa.fa-google
+  Import projects from Google Code
+
+%p.light
+  Select projects you want to import.
+%p.light
+  Optionally, you can
+  = link_to "customize", new_user_map_import_google_code_path
+  how Google Code email addresses and usernames are imported into GitLab.
+%hr
+%p
+  = button_tag 'Import all projects', class: "btn btn-success js-import-all"
+
+%table.table.import-jobs
+  %thead
+    %tr
+      %th From Google Code
+      %th To GitLab
+      %th Status
+  %tbody
+    - @already_added_projects.each do |project|
+      %tr{id: "project_#{project.id}", class: "#{project_status_css_class(project.import_status)}"}
+        %td
+          = link_to project.import_source, "https://code.google.com/p/#{project.import_source}", target: "_blank"
+        %td
+          %strong= link_to project.path_with_namespace, [project.namespace.becomes(Namespace), project]
+        %td.job-status
+          - if project.import_status == 'finished'
+            %span
+              %i.fa.fa-check
+              done
+          - elsif project.import_status == 'started'
+            %i.fa.fa-spinner.fa-spin
+            started
+          - else
+            = project.human_import_status_name
+
+    - @repos.each do |repo|
+      %tr{id: "repo_#{repo.id}"}
+        %td
+          = link_to repo.name, "https://code.google.com/p/#{repo.name}", target: "_blank"
+        %td.import-target
+          = "#{current_user.username}/#{repo.name}"
+        %td.import-actions.job-status
+          = button_tag "Import", class: "btn js-add-to-import"
+
+:coffeescript
+  new ImporterStatus("#{jobs_import_google_code_path}", "#{import_google_code_path}")