Add mutation to update board lists

- Add tests
- Update schema
- Update docs

app/graphql/mutations/boards/lists/update.rb

+# frozen_string_literal: true
+
+module Mutations
+  module Boards
+    module Lists
+      class Update < BaseMutation
+        graphql_name 'UpdateBoardList'
+
+        argument :list_id, GraphQL::ID_TYPE,
+                  required: true,
+                  loads: Types::BoardListType,
+                  description: 'Global ID of the list.'
+
+        argument :position, GraphQL::INT_TYPE,
+                  required: false,
+                  description: 'Position of list within the board'
+
+        argument :collapsed, GraphQL::BOOLEAN_TYPE,
+                  required: false,
+                  description: 'Indicates if list is collapsed for this user'
+
+        field :list,
+              Types::BoardListType,
+              null: true,
+              description: 'Mutated list'
+
+        def resolve(list: nil, **args)
+          authorize!(list)
+          update_result = update_list(list, args)
+
+          {
+            list: update_result[:list],
+            errors: list.errors.full_messages
+          }
+        end
+
+        private
+
+        def update_list(list, args)
+          service = ::Boards::Lists::UpdateService.new(list.board, current_user, args)
+          service.execute(list)
+        end
+
+        def authorize!(list)
+          raise_resource_not_available_error! unless list
+          raise_resource_not_available_error! unless Ability.allowed?(current_user, :admin_list, list.board)
+        end
+      end
+    end
+  end
+end

app/graphql/types/mutation_type.rb

@@ -16,6 +16,7 @@ module Types
     mount_mutation Mutations::AwardEmojis::Toggle
     mount_mutation Mutations::Boards::Issues::IssueMoveList
     mount_mutation Mutations::Boards::Lists::Create
+    mount_mutation Mutations::Boards::Lists::Update
     mount_mutation Mutations::Branches::Create, calls_gitaly: true
     mount_mutation Mutations::Commits::Create, calls_gitaly: true
     mount_mutation Mutations::Discussions::ToggleResolve

changelogs/unreleased/229764-graphql-reorder-lists-within-a-board.yml

+---
+title: Add GraphQL mutation for updating board list position and collapsed/expanded state.
+merge_request: 38942
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -9561,6 +9561,7 @@ type Mutation {
   toggleAwardEmoji(input: ToggleAwardEmojiInput!): ToggleAwardEmojiPayload @deprecated(reason: "Use awardEmojiToggle. Deprecated in 13.2")
   updateAlertStatus(input: UpdateAlertStatusInput!): UpdateAlertStatusPayload
   updateBoard(input: UpdateBoardInput!): UpdateBoardPayload
+  updateBoardList(input: UpdateBoardListInput!): UpdateBoardListPayload
   updateContainerExpirationPolicy(input: UpdateContainerExpirationPolicyInput!): UpdateContainerExpirationPolicyPayload
   updateEpic(input: UpdateEpicInput!): UpdateEpicPayload
 
@@ -15573,6 +15574,51 @@ input UpdateBoardInput {
   weight: Int
 }
 
+"""
+Autogenerated input type of UpdateBoardList
+"""
+input UpdateBoardListInput {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  Indicates if list is collapsed for this user
+  """
+  collapsed: Boolean
+
+  """
+  Global ID of the list.
+  """
+  listId: ID!
+
+  """
+  Position of list within the board
+  """
+  position: Int
+}
+
+"""
+Autogenerated return type of UpdateBoardList
+"""
+type UpdateBoardListPayload {
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  Errors encountered during execution of the mutation.
+  """
+  errors: [String!]!
+
+  """
+  Mutated list
+  """
+  list: BoardList
+}
+
 """
 Autogenerated return type of UpdateBoard
 """

doc/api/graphql/reference/gitlab_schema.json

@@ -28403,6 +28403,33 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "updateBoardList",
+              "description": null,
+              "args": [
+                {
+                  "name": "input",
+                  "description": null,
+                  "type": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "INPUT_OBJECT",
+                      "name": "UpdateBoardListInput",
+                      "ofType": null
+                    }
+                  },
+                  "defaultValue": null
+                }
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "UpdateBoardListPayload",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "updateContainerExpirationPolicy",
               "description": null,
@@ -45857,6 +45884,128 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "INPUT_OBJECT",
+          "name": "UpdateBoardListInput",
+          "description": "Autogenerated input type of UpdateBoardList",
+          "fields": null,
+          "inputFields": [
+            {
+              "name": "listId",
+              "description": "Global ID of the list.",
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "SCALAR",
+                  "name": "ID",
+                  "ofType": null
+                }
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "position",
+              "description": "Position of list within the board",
+              "type": {
+                "kind": "SCALAR",
+                "name": "Int",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "collapsed",
+              "description": "Indicates if list is collapsed for this user",
+              "type": {
+                "kind": "SCALAR",
+                "name": "Boolean",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "clientMutationId",
+              "description": "A unique identifier for the client performing the mutation.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "defaultValue": null
+            }
+          ],
+          "interfaces": null,
+          "enumValues": null,
+          "possibleTypes": null
+        },
+        {
+          "kind": "OBJECT",
+          "name": "UpdateBoardListPayload",
+          "description": "Autogenerated return type of UpdateBoardList",
+          "fields": [
+            {
+              "name": "clientMutationId",
+              "description": "A unique identifier for the client performing the mutation.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "errors",
+              "description": "Errors encountered during execution of the mutation.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "NON_NULL",
+                "name": null,
+                "ofType": {
+                  "kind": "LIST",
+                  "name": null,
+                  "ofType": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "SCALAR",
+                      "name": "String",
+                      "ofType": null
+                    }
+                  }
+                }
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "name": "list",
+              "description": "Mutated list",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "BoardList",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            }
+          ],
+          "inputFields": null,
+          "interfaces": [
+
+          ],
+          "enumValues": null,
+          "possibleTypes": null
+        },
         {
           "kind": "OBJECT",
           "name": "UpdateBoardPayload",

doc/api/graphql/reference/index.md

@@ -2305,6 +2305,16 @@ Autogenerated return type of UpdateAlertStatus
 | `issue` | Issue | The issue created after mutation |
 | `todo` | Todo | The todo after mutation |
 
+## UpdateBoardListPayload
+
+Autogenerated return type of UpdateBoardList
+
+| Name  | Type  | Description |
+| ---   |  ---- | ----------  |
+| `clientMutationId` | String | A unique identifier for the client performing the mutation. |
+| `errors` | String! => Array | Errors encountered during execution of the mutation. |
+| `list` | BoardList | Mutated list |
+
 ## UpdateBoardPayload
 
 Autogenerated return type of UpdateBoard

spec/graphql/mutations/boards/lists/update_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Boards::Lists::Update do
+  let_it_be(:group)    { create(:group, :private) }
+  let_it_be(:board)    { create(:board, group: group) }
+  let_it_be(:reporter) { create(:user) }
+  let_it_be(:guest)    { create(:user) }
+  let_it_be(:list)     { create(:list, board: board, position: 0) }
+  let_it_be(:list2)    { create(:list, board: board) }
+  let(:mutation) { described_class.new(object: nil, context: { current_user: current_user }, field: nil) }
+  let(:list_update_params) { { position: 1, collapsed: true } }
+
+  before_all do
+    group.add_reporter(reporter)
+    group.add_guest(guest)
+    list.update_preferences_for(reporter, collapsed: false)
+  end
+
+  subject { mutation.resolve(list: list, **list_update_params) }
+
+  describe '#resolve' do
+    context 'with permission to admin board lists' do
+      let(:current_user) { reporter }
+
+      it 'updates the list as expected' do
+        subject
+
+        reloaded_list = list.reload
+        expect(reloaded_list.position).to eq(1)
+        expect(reloaded_list.collapsed?(current_user)).to eq(true)
+      end
+    end
+
+    context 'without permission to admin board lists' do
+      let(:current_user) { guest }
+
+      it 'fails' do
+        expect { subject }.to raise_error(Gitlab::Graphql::Errors::ResourceNotAvailable)
+      end
+    end
+  end
+end

spec/requests/api/graphql/mutations/boards/lists/update_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Update of an existing board list' do
+  include GraphqlHelpers
+
+  let_it_be(:current_user) { create(:user) }
+  let_it_be(:group) { create(:group, :private) }
+  let_it_be(:board) { create(:board, group: group) }
+  let_it_be(:list) { create(:list, board: board, position: 0) }
+  let_it_be(:list2) { create(:list, board: board) }
+  let_it_be(:input) { { list_id: list.to_global_id.to_s, position: 1, collapsed: true } }
+  let(:mutation) { graphql_mutation(:update_board_list, input) }
+  let(:mutation_response) { graphql_mutation_response(:update_board_list) }
+
+  context 'the user is not allowed to admin board lists' do
+    it_behaves_like 'a mutation that returns top-level errors',
+      errors: ['The resource that you are attempting to access does not exist or you don\'t have permission to perform this action']
+  end
+
+  context 'when user has permissions to admin board lists' do
+    before do
+      group.add_reporter(current_user)
+      list.update_preferences_for(current_user, collapsed: false)
+    end
+
+    it 'updates the list' do
+      post_graphql_mutation(mutation, current_user: current_user)
+
+      expect(response).to have_gitlab_http_status(:success)
+      expect(mutation_response['list']).to include(
+        'position' => 1,
+        'collapsed' => true
+      )
+    end
+  end
+end