1 files changed, 44 insertions, 0 deletions
diff --git a/lib/gitlab/slash_commands/issue_close.rb b/lib/gitlab/slash_commands/issue_close.rb
new file mode 100644
index 00000000000..5fcc86e91c4
--- /dev/null
+++ b/lib/gitlab/slash_commands/issue_close.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module SlashCommands
+    class IssueClose < IssueCommand
+      def self.match(text)
+        /\Aissue\s+close\s+#{Issue.reference_prefix}?(?<iid>\d+)/.match(text)
+      end
+
+      def self.help_message
+        "issue close <id>"
+      end
+
+      def self.allowed?(project, user)
+        can?(user, :update_issue, project)
+      end
+
+      def execute(match)
+        issue = find_by_iid(match[:iid])
+
+        return not_found unless issue
+        return presenter(issue).already_closed if issue.closed?
+
+        close_issue(issue: issue)
+
+        presenter(issue).present
+      end
+
+      private
+
+      def close_issue(issue:)
+        Issues::CloseService.new(project, current_user).execute(issue)
+      end
+
+      def presenter(issue)
+        Gitlab::SlashCommands::Presenters::IssueClose.new(issue)
+      end
+
+      def not_found
+        Gitlab::SlashCommands::Presenters::Access.new.not_found
+      end
+    end
+  end
+end