Remove Mattermost team with GitLab groupzj-delete-mm-team

When destroying a group, now an API call is made to the Mattermost
server to request the deletion of the project.

4 files changed, 18 insertions, 0 deletions

diff --git a/app/services/groups/destroy_service.rb b/app/services/groups/destroy_service.rb
index 497fdb09cdc..22f217a8120 100644
--- a/app/services/groups/destroy_service.rb
+++ b/app/services/groups/destroy_service.rb
@@ -22,6 +22,10 @@ module Groups
         DestroyService.new(group, current_user).execute
       end
 
+      if group.chat_team
+        Mattermost::Team.new(current_user).destroy(@group.chat_team.team_id)
+      end
+
       group.really_destroy!
     end
   end
diff --git a/changelogs/unreleased/zj-delete-mm-team.yml b/changelogs/unreleased/zj-delete-mm-team.yml
new file mode 100644
index 00000000000..a3f8f7454a7
--- /dev/null
+++ b/changelogs/unreleased/zj-delete-mm-team.yml
@@ -0,0 +1,4 @@
+---
+title: Remove Mattermost team when deleting a group
+merge_request:
+author:
diff --git a/lib/mattermost/client.rb b/lib/mattermost/client.rb
index 3d60618006c..728406e9acc 100644
--- a/lib/mattermost/client.rb
+++ b/lib/mattermost/client.rb
@@ -36,6 +36,12 @@ module Mattermost
       end
     end
 
+    def session_delete(path, options = {})
+      with_session do |session|
+        delete(session, path, options)
+      end
+    end
+
     def json_response(response)
       json_response = JSON.parse(response.body)
 
diff --git a/lib/mattermost/team.rb b/lib/mattermost/team.rb
index 2cdbbdece16..e189e3703ae 100644
--- a/lib/mattermost/team.rb
+++ b/lib/mattermost/team.rb
@@ -14,5 +14,9 @@ module Mattermost
         type: type
       }.to_json)
     end
+
+    def destroy(team_id:)
+      session_delete("/api/v4/teams/#{team}")
+    end
   end
 end