Add board_move slash command

6 files changed, 107 insertions, 9 deletions

diff --git a/app/models/label.rb b/app/models/label.rb
index d8b0e250732..ddddb6bdf8f 100644
--- a/app/models/label.rb
+++ b/app/models/label.rb
@@ -34,6 +34,7 @@ class Label < ActiveRecord::Base
 
   scope :templates, -> { where(template: true) }
   scope :with_title, ->(title) { where(title: title) }
+  scope :on_project_boards, ->(project_id) { joins(lists: :board).merge(List.movable).where(boards: { project_id: project_id }) }
 
   def self.prioritized(project)
     joins(:priorities)
diff --git a/app/services/boards/issues/move_service.rb b/app/services/boards/issues/move_service.rb
index d5735f13c1e..e73b1a4361a 100644
--- a/app/services/boards/issues/move_service.rb
+++ b/app/services/boards/issues/move_service.rb
@@ -61,7 +61,7 @@ module Boards
           if moving_to_list.movable?
             moving_from_list.label_id
           else
-            project.boards.joins(:lists).merge(List.movable).pluck(:label_id)
+            Label.on_project_boards(project.id).pluck(:label_id)
           end
 
         Array(label_ids).compact
diff --git a/app/services/slash_commands/interpret_service.rb b/app/services/slash_commands/interpret_service.rb
index 49d45ec9dbd..6aeebc26685 100644
--- a/app/services/slash_commands/interpret_service.rb
+++ b/app/services/slash_commands/interpret_service.rb
@@ -330,6 +330,28 @@ module SlashCommands
       @updates[:target_branch] = branch_name if project.repository.branch_names.include?(branch_name)
     end
 
+    desc 'Move issue from one column of the board to another'
+    params '~"Target column"'
+    condition do
+      issuable.is_a?(Issue) &&
+        current_user.can?(:"update_#{issuable.to_ability_name}", issuable) &&
+        issuable.project.boards.count == 1
+    end
+    command :board_move do |target_list_name|
+      label_ids = find_label_ids(target_list_name)
+
+      if label_ids.size == 1
+        label_id = label_ids.first
+
+        # Ensure this label corresponds to a list on the board
+        next unless Label.on_project_boards(issuable.project_id).where(id: label_id).exists?
+
+        @updates[:remove_label_ids] =
+          issuable.labels.on_project_boards(issuable.project_id).where.not(id: label_id).pluck(:id)
+        @updates[:add_label_ids] = [label_id]
+      end
+    end
+
     def find_label_ids(labels_param)
       label_ids_by_reference = extract_references(labels_param, :label).map(&:id)
       labels_ids_by_name = LabelsFinder.new(current_user, project_id: project.id, name: labels_param.split).execute.select(:id)
diff --git a/changelogs/unreleased/28457-slash-command-board-move.yml b/changelogs/unreleased/28457-slash-command-board-move.yml
new file mode 100644
index 00000000000..cec0f89ed91
--- /dev/null
+++ b/changelogs/unreleased/28457-slash-command-board-move.yml
@@ -0,0 +1,4 @@
+---
+title: Add board_move slash command
+merge_request: 10433
+author: Alex Sanford
diff --git a/doc/user/project/slash_commands.md b/doc/user/project/slash_commands.md
index 45176fde9db..08452ca75cd 100644
--- a/doc/user/project/slash_commands.md
+++ b/doc/user/project/slash_commands.md
@@ -36,3 +36,4 @@ do.
 | `/remove_time_spent`       | Remove time spent |
 | `/target_branch <Branch Name>` | Set target branch for current merge request |
 | `/award :emoji:`  | Toggle award for :emoji: |
+| `/board_move ~column`      | Move issue to column on the board |
diff --git a/spec/services/slash_commands/interpret_service_spec.rb b/spec/services/slash_commands/interpret_service_spec.rb
index a63281f0eab..29e65fe7ce6 100644
--- a/spec/services/slash_commands/interpret_service_spec.rb
+++ b/spec/services/slash_commands/interpret_service_spec.rb
@@ -52,7 +52,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'unassign command' do
       it 'populates assignee_id: nil if content contains /unassign' do
-        issuable.update(assignee_id: developer.id)
+        issuable.update!(assignee_id: developer.id)
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(assignee_id: nil)
@@ -70,7 +70,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'remove_milestone command' do
       it 'populates milestone_id: nil if content contains /remove_milestone' do
-        issuable.update(milestone_id: milestone.id)
+        issuable.update!(milestone_id: milestone.id)
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(milestone_id: nil)
@@ -108,7 +108,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'unlabel command' do
       it 'fetches label ids and populates remove_label_ids if content contains /unlabel' do
-        issuable.update(label_ids: [inprogress.id]) # populate the label
+        issuable.update!(label_ids: [inprogress.id]) # populate the label
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(remove_label_ids: [inprogress.id])
@@ -117,7 +117,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'multiple unlabel command' do
       it 'fetches label ids and populates remove_label_ids if content contains  mutiple /unlabel' do
-        issuable.update(label_ids: [inprogress.id, bug.id]) # populate the label
+        issuable.update!(label_ids: [inprogress.id, bug.id]) # populate the label
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(remove_label_ids: [inprogress.id, bug.id])
@@ -126,7 +126,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'unlabel command with no argument' do
       it 'populates label_ids: [] if content contains /unlabel with no arguments' do
-        issuable.update(label_ids: [inprogress.id]) # populate the label
+        issuable.update!(label_ids: [inprogress.id]) # populate the label
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(label_ids: [])
@@ -135,7 +135,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'relabel command' do
       it 'populates label_ids: [] if content contains /relabel' do
-        issuable.update(label_ids: [bug.id]) # populate the label
+        issuable.update!(label_ids: [bug.id]) # populate the label
         inprogress # populate the label
         _, updates = service.execute(content, issuable)
 
@@ -187,7 +187,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'remove_due_date command' do
       it 'populates due_date: nil if content contains /remove_due_date' do
-        issuable.update(due_date: Date.today)
+        issuable.update!(due_date: Date.today)
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(due_date: nil)
@@ -204,7 +204,7 @@ describe SlashCommands::InterpretService, services: true do
 
     shared_examples 'unwip command' do
       it 'returns wip_event: "unwip" if content contains /wip' do
-        issuable.update(title: issuable.wip_title)
+        issuable.update!(title: issuable.wip_title)
         _, updates = service.execute(content, issuable)
 
         expect(updates).to eq(wip_event: 'unwip')
@@ -727,5 +727,75 @@ describe SlashCommands::InterpretService, services: true do
         end
       end
     end
+
+    context '/board_move command' do
+      let(:todo) { create(:label, project: project, title: 'To Do') }
+      let(:inreview) { create(:label, project: project, title: 'In Review') }
+      let(:content) { %{/board_move ~"#{inreview.title}"} }
+
+      let!(:board) { create(:board, project: project) }
+      let!(:todo_list) { create(:list, board: board, label: todo) }
+      let!(:inreview_list) { create(:list, board: board, label: inreview) }
+      let!(:inprogress_list) { create(:list, board: board, label: inprogress) }
+
+      it 'populates remove_label_ids for all current board columns' do
+        issue.update!(label_ids: [todo.id, inprogress.id])
+
+        _, updates = service.execute(content, issue)
+
+        expect(updates[:remove_label_ids]).to match_array([todo.id, inprogress.id])
+      end
+
+      it 'populates add_label_ids with the id of the given label' do
+        _, updates = service.execute(content, issue)
+
+        expect(updates[:add_label_ids]).to eq([inreview.id])
+      end
+
+      it 'does not include the given label id in remove_label_ids' do
+        issue.update!(label_ids: [todo.id, inreview.id])
+
+        _, updates = service.execute(content, issue)
+
+        expect(updates[:remove_label_ids]).to match_array([todo.id])
+      end
+
+      it 'does not remove label ids that are not lists on the board' do
+        issue.update!(label_ids: [todo.id, bug.id])
+
+        _, updates = service.execute(content, issue)
+
+        expect(updates[:remove_label_ids]).to match_array([todo.id])
+      end
+
+      context 'if the project has multiple boards' do
+        let(:issuable) { issue }
+        before { create(:board, project: project) }
+        it_behaves_like 'empty command'
+      end
+
+      context 'if the given label does not exist' do
+        let(:issuable) { issue }
+        let(:content) { '/board_move ~"Fake Label"' }
+        it_behaves_like 'empty command'
+      end
+
+      context 'if multiple labels are given' do
+        let(:issuable) { issue }
+        let(:content) { %{/board_move ~"#{inreview.title}" ~"#{todo.title}"} }
+        it_behaves_like 'empty command'
+      end
+
+      context 'if the given label is not a list on the board' do
+        let(:issuable) { issue }
+        let(:content) { %{/board_move ~"#{bug.title}"} }
+        it_behaves_like 'empty command'
+      end
+
+      context 'if issuable is not an Issue' do
+        let(:issuable) { merge_request }
+        it_behaves_like 'empty command'
+      end
+    end
   end
 end