Add leave link to access_granted email

Allows users to leave a project/group
that they have been added to.
Add function to leave a namespace by url param
If the `leave` param is present on a project/group show page,
click the leave link.

6 files changed, 42 insertions, 4 deletions

diff --git a/app/assets/javascripts/namespaces/leave_by_url.js b/app/assets/javascripts/namespaces/leave_by_url.js
new file mode 100644
index 00000000000..b817d38960c
--- /dev/null
+++ b/app/assets/javascripts/namespaces/leave_by_url.js
@@ -0,0 +1,22 @@
+import Flash from '~/flash';
+import { __, sprintf } from '~/locale';
+import { getParameterByName } from '~/lib/utils/common_utils';
+
+const PARAMETER_NAME = 'leave';
+const LEAVE_LINK_SELECTOR = '.js-leave-link';
+
+export default function leaveByUrl(namespaceType) {
+  if (!namespaceType) throw new Error('namespaceType not provided');
+
+  const param = getParameterByName(PARAMETER_NAME);
+  if (!param) return;
+
+  const leaveLink = document.querySelector(LEAVE_LINK_SELECTOR);
+  if (leaveLink) {
+    leaveLink.click();
+  } else {
+    Flash(
+      sprintf(__('You do not have permission to leave this %{namespaceType}.'), { namespaceType }),
+    );
+  }
+}
diff --git a/app/assets/javascripts/pages/groups/show/index.js b/app/assets/javascripts/pages/groups/show/index.js
index af924e74f1f..82ee5ead83d 100644
--- a/app/assets/javascripts/pages/groups/show/index.js
+++ b/app/assets/javascripts/pages/groups/show/index.js
@@ -1,5 +1,7 @@
+import leaveByUrl from '~/namespaces/leave_by_url';
 import initGroupDetails from '../shared/group_details';
 
 document.addEventListener('DOMContentLoaded', () => {
+  leaveByUrl('group');
   initGroupDetails();
 });
diff --git a/app/assets/javascripts/pages/projects/show/index.js b/app/assets/javascripts/pages/projects/show/index.js
index 7302c1ab202..869f70e7d33 100644
--- a/app/assets/javascripts/pages/projects/show/index.js
+++ b/app/assets/javascripts/pages/projects/show/index.js
@@ -9,6 +9,7 @@ import Activities from '~/activities';
 import { ajaxGet } from '~/lib/utils/common_utils';
 import GpgBadges from '~/gpg_badges';
 import initReadMore from '~/read_more';
+import leaveByUrl from '~/namespaces/leave_by_url';
 import Star from '../../../star';
 import notificationsDropdown from '../../../notifications_dropdown';
 
@@ -44,4 +45,5 @@ document.addEventListener('DOMContentLoaded', () => {
   });
 
   GpgBadges.fetch();
+  leaveByUrl('project');
 });
diff --git a/app/views/notify/member_access_granted_email.html.haml b/app/views/notify/member_access_granted_email.html.haml
index 18dec806539..1c50dba9c97 100644
--- a/app/views/notify/member_access_granted_email.html.haml
+++ b/app/views/notify/member_access_granted_email.html.haml
@@ -1,3 +1,10 @@
+- link_end = '</a>'.html_safe
+- source_type = member_source.model_name.singular
+- leave_link = polymorphic_url([member_source], leave: 1)
+- source_link = link_to(member_source.human_name, member_source.web_url, target: '_blank', rel: 'noopener noreferrer')
+
 %p
-  You have been granted #{member.human_access} access to the
-  #{link_to member_source.human_name, member_source.web_url} #{member_source.model_name.singular}.
+  = _('You have been granted %{access_level} access to the %{source_link} %{source_type}.').html_safe % { access_level: member.human_access, source_link: source_link, source_type: source_type }
+%p
+  - leave_link_start = '<a href="%{url}" target="_blank" rel="noopener noreferrer">'.html_safe % { url: leave_link }
+  = _('If this was a mistake you can %{leave_link_start}leave the %{source_type}%{link_end}.').html_safe % { source_type: source_type, leave_link_start: leave_link_start, link_end: link_end }
diff --git a/app/views/notify/member_access_granted_email.text.erb b/app/views/notify/member_access_granted_email.text.erb
index a9fb3a589a5..445009bb413 100644
--- a/app/views/notify/member_access_granted_email.text.erb
+++ b/app/views/notify/member_access_granted_email.text.erb
@@ -1,3 +1,8 @@
-You have been granted <%= member.human_access %> access to the <%= member_source.human_name %> <%= member_source.model_name.singular %>.
+<% source_type = member_source.model_name.singular %>
+<%= _('You have been granted %{access_level} access to the %{source_name} %{source_type}.') % { access_level: member.human_access, source_name: member_source.human_name, source_type: source_type  } %>
 
 <%= member_source.web_url %>
+
+<%= _('If this was a mistake you can leave the %{source_type}.') % { source_type: source_type  } %>
+
+<%= polymorphic_url([member_source], leave: 1) %>
diff --git a/app/views/shared/members/_access_request_links.html.haml b/app/views/shared/members/_access_request_links.html.haml
index f7227b9101e..eac743b5206 100644
--- a/app/views/shared/members/_access_request_links.html.haml
+++ b/app/views/shared/members/_access_request_links.html.haml
@@ -5,7 +5,7 @@
   = link_to link_text, polymorphic_path([:leave, source, :members]),
             method: :delete,
             data: { confirm: leave_confirmation_message(source) },
-            class: 'access-request-link'
+            class: 'access-request-link js-leave-link'
 - elsif requester = source.requesters.find_by(user_id: current_user.id) # rubocop: disable CodeReuse/ActiveRecord
   = link_to _('Withdraw Access Request'), polymorphic_path([:leave, source, :members]),
             method: :delete,