5 files changed, 121 insertions, 1 deletions
diff --git a/lib/gitlab/slash_commands/application_help.rb b/lib/gitlab/slash_commands/application_help.rb
new file mode 100644
index 00000000000..0ea7554ba64
--- /dev/null
+++ b/lib/gitlab/slash_commands/application_help.rb
@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module SlashCommands
+    class ApplicationHelp < BaseCommand
+      def initialize(params)
+        @params = params
+      end
+
+      def execute
+        Gitlab::SlashCommands::Presenters::Help.new(commands).present(trigger, params[:text])
+      end
+
+      private
+
+      def trigger
+        "#{params[:command]} [project name or alias]"
+      end
+
+      def commands
+        Gitlab::SlashCommands::Command.commands
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/slash_commands/command.rb b/lib/gitlab/slash_commands/command.rb
index 474c09b9c4d..7c963fcf38a 100644
--- a/lib/gitlab/slash_commands/command.rb
+++ b/lib/gitlab/slash_commands/command.rb
@@ -9,7 +9,8 @@ module Gitlab
           Gitlab::SlashCommands::IssueNew,
           Gitlab::SlashCommands::IssueSearch,
           Gitlab::SlashCommands::IssueMove,
-          Gitlab::SlashCommands::Deploy
+          Gitlab::SlashCommands::Deploy,
+          Gitlab::SlashCommands::Run
         ]
       end
 
diff --git a/lib/gitlab/slash_commands/presenters/error.rb b/lib/gitlab/slash_commands/presenters/error.rb
new file mode 100644
index 00000000000..442f8796338
--- /dev/null
+++ b/lib/gitlab/slash_commands/presenters/error.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module SlashCommands
+    module Presenters
+      class Error < Presenters::Base
+        def initialize(message)
+          @message = message
+        end
+
+        def message
+          ephemeral_response(text: @message)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/slash_commands/presenters/run.rb b/lib/gitlab/slash_commands/presenters/run.rb
new file mode 100644
index 00000000000..c4bbc231464
--- /dev/null
+++ b/lib/gitlab/slash_commands/presenters/run.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module SlashCommands
+    module Presenters
+      class Run < Presenters::Base
+        # rubocop: disable CodeReuse/ActiveRecord
+        def present(pipeline)
+          build = pipeline.builds.take
+
+          if build && (responder = Chat::Responder.responder_for(build))
+            in_channel_response(responder.scheduled_output)
+          else
+            unsupported_chat_service
+          end
+        end
+        # rubocop: enable CodeReuse/ActiveRecord
+
+        def unsupported_chat_service
+          ephemeral_response(text: 'Sorry, this chat service is currently not supported by GitLab ChatOps.')
+        end
+
+        def failed_to_schedule(command)
+          ephemeral_response(
+            text: 'The command could not be scheduled. Make sure that your ' \
+              'project has a .gitlab-ci.yml that defines a job with the ' \
+              "name #{command.inspect}"
+          )
+        end
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/slash_commands/run.rb b/lib/gitlab/slash_commands/run.rb
new file mode 100644
index 00000000000..78a2d531e96
--- /dev/null
+++ b/lib/gitlab/slash_commands/run.rb
@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module SlashCommands
+    # Slash command for triggering chatops jobs.
+    class Run < BaseCommand
+      def self.match(text)
+        /\Arun\s+(?<command>\S+)(\s+(?<arguments>.+))?\z/.match(text)
+      end
+
+      def self.help_message
+        'run <command> <arguments>'
+      end
+
+      def self.available?(project)
+        project.builds_enabled?
+      end
+
+      def self.allowed?(project, user)
+        can?(user, :create_pipeline, project)
+      end
+
+      def execute(match)
+        command = Chat::Command.new(
+          project: project,
+          chat_name: chat_name,
+          name: match[:command],
+          arguments: match[:arguments],
+          channel: params[:channel_id],
+          response_url: params[:response_url]
+        )
+
+        presenter = Gitlab::SlashCommands::Presenters::Run.new
+        pipeline = command.try_create_pipeline
+
+        if pipeline&.persisted?
+          presenter.present(pipeline)
+        else
+          presenter.failed_to_schedule(command.name)
+        end
+      end
+    end
+  end
+end