1 files changed, 71 insertions, 0 deletions
diff --git a/app/models/integrations/hangouts_chat.rb b/app/models/integrations/hangouts_chat.rb
new file mode 100644
index 00000000000..d02cfe4ec56
--- /dev/null
+++ b/app/models/integrations/hangouts_chat.rb
@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+module Integrations
+  class HangoutsChat < BaseChatNotification
+    include ActionView::Helpers::UrlHelper
+
+    def title
+      'Google Chat'
+    end
+
+    def description
+      'Send notifications from GitLab to a room in Google Chat.'
+    end
+
+    def self.to_param
+      'hangouts_chat'
+    end
+
+    def help
+      docs_link = link_to _('How do I set up a Google Chat webhook?'), Rails.application.routes.url_helpers.help_page_url('user/project/integrations/hangouts_chat'), target: '_blank', rel: 'noopener noreferrer'
+      s_('Before enabling this integration, create a webhook for the room in Google Chat where you want to receive notifications from this project. %{docs_link}').html_safe % { docs_link: docs_link.html_safe }
+    end
+
+    def event_field(event)
+    end
+
+    def default_channel_placeholder
+    end
+
+    def webhook_placeholder
+      'https://chat.googleapis.com/v1/spaces…'
+    end
+
+    def self.supported_events
+      %w[push issue confidential_issue merge_request note confidential_note tag_push
+         pipeline wiki_page]
+    end
+
+    def default_fields
+      [
+        { type: 'text', name: 'webhook', placeholder: "#{webhook_placeholder}" },
+        { type: 'checkbox', name: 'notify_only_broken_pipelines' },
+        { type: 'select', name: 'branches_to_be_notified', choices: branch_choices }
+      ]
+    end
+
+    private
+
+    def notify(message, opts)
+      simple_text = parse_simple_text_message(message)
+      ::HangoutsChat::Sender.new(webhook).simple(simple_text)
+    end
+
+    def parse_simple_text_message(message)
+      header = message.pretext
+      return header if message.attachments.empty?
+
+      attachment = message.attachments.first
+      title      = format_attachment_title(attachment)
+      body       = attachment[:text]
+
+      [header, title, body].compact.join("\n")
+    end
+
+    def format_attachment_title(attachment)
+      return attachment[:title] unless attachment[:title_link]
+
+      "<#{attachment[:title_link]}|#{attachment[:title]}>"
+    end
+  end
+end