1 files changed, 114 insertions, 0 deletions
diff --git a/lib/slack/manifest.rb b/lib/slack/manifest.rb
new file mode 100644
index 00000000000..de189f3bdf5
--- /dev/null
+++ b/lib/slack/manifest.rb
@@ -0,0 +1,114 @@
+# frozen_string_literal: true
+
+module Slack
+  module Manifest
+    class << self
+      delegate :to_json, to: :to_h
+
+      def share_url
+        "https://api.slack.com/apps?new_app=1&manifest_json=#{ERB::Util.url_encode(to_json)}"
+      end
+
+      def to_h
+        {
+          display_information: display_information,
+          features: features,
+          oauth_config: oauth_config,
+          settings: settings
+        }
+      end
+
+      private
+
+      def display_information
+        {
+          name: "GitLab (#{Gitlab.config.gitlab.host.first(26)})",
+          description: s_('SlackIntegration|Interact with GitLab without leaving your Slack workspace!'),
+          background_color: '#171321',
+          # Each element in this array will become a paragraph joined with `\r\n\r\n'.
+          long_description: [
+            format(
+              s_(
+                'SlackIntegration|Generated for %{host} by GitLab %{version}.'
+              ),
+              host: Gitlab.config.gitlab.host,
+              version: Gitlab::VERSION
+            ),
+            s_(
+              'SlackIntegration|- *Notifications:* Get notifications to your team\'s Slack channel about events ' \
+              'happening inside your GitLab projects.'
+            ),
+            format(
+              s_(
+                'SlackIntegration|- *Slash commands:* Quickly open, access, or close issues from Slack using the ' \
+                '`%{slash_command}` command. Streamline your GitLab deployments with ChatOps.'
+              ),
+              slash_command: '/gitlab'
+            )
+          ].join("\r\n\r\n")
+        }
+      end
+
+      def features
+        {
+          app_home: {
+            home_tab_enabled: true,
+            messages_tab_enabled: false,
+            messages_tab_read_only_enabled: true
+          },
+          bot_user: {
+            display_name: 'GitLab',
+            always_online: true
+          },
+          slash_commands: [
+            {
+              command: '/gitlab',
+              url: api_v4('slack/trigger'),
+              description: s_('SlackIntegration|GitLab slash commands'),
+              usage_hint: s_('SlackIntegration|your-project-name-or-alias command'),
+              should_escape: false
+            }
+          ]
+        }
+      end
+
+      def oauth_config
+        {
+          redirect_urls: [
+            Gitlab.config.gitlab.url
+          ],
+          scopes: {
+            bot: %w[
+              commands
+              chat:write
+              chat:write.public
+            ]
+          }
+        }
+      end
+
+      def settings
+        {
+          event_subscriptions: {
+            request_url: api_v4('integrations/slack/events'),
+            bot_events: %w[
+              app_home_opened
+            ]
+          },
+          interactivity: {
+            is_enabled: true,
+            request_url: api_v4('integrations/slack/interactions'),
+            message_menu_options_url: api_v4('integrations/slack/options')
+          },
+          org_deploy_enabled: false,
+          socket_mode_enabled: false,
+          token_rotation_enabled: false
+        }
+      end
+
+      def api_v4(path)
+        "#{Gitlab.config.gitlab.url}/api/v4/#{path}"
+      end
+    end
+  end
+end