Create an issue board via GraphQL mutation

- add new mutation and specs
- add documentation

app/graphql/mutations/boards/create.rb

+# frozen_string_literal: true
+
+module Mutations
+  module Boards
+    class Create < ::Mutations::BaseMutation
+      include Mutations::ResolvesGroup
+      include ResolvesProject
+
+      graphql_name 'CreateBoard'
+
+      field :board,
+            Types::BoardType,
+            null: true,
+            description: 'The board after mutation.'
+
+      argument :project_path, GraphQL::ID_TYPE,
+               required: false,
+               description: 'The project full path the board is associated with.'
+      argument :group_path, GraphQL::ID_TYPE,
+               required: false,
+               description: 'The group full path the board is associated with.'
+      argument :name,
+                GraphQL::STRING_TYPE,
+                required: false,
+                description: 'The board name.'
+      argument :assignee_id,
+                GraphQL::STRING_TYPE,
+                required: false,
+                description: 'The ID of the user to be assigned to the board.'
+      argument :milestone_id,
+               GraphQL::ID_TYPE,
+               required: false,
+               description: 'The ID of the milestone to be assigned to the board.'
+      argument :weight,
+               GraphQL::BOOLEAN_TYPE,
+               required: false,
+               description: 'The weight of the board.'
+      argument :label_ids,
+               [GraphQL::ID_TYPE],
+               required: false,
+               description: 'The IDs of labels to be added to the board.'
+
+      authorize :admin_board
+
+      def resolve(args)
+        group_path = args.delete(:group_path)
+        project_path = args.delete(:project_path)
+
+        board_parent = authorized_find!(group_path: group_path, project_path: project_path)
+        response = ::Boards::CreateService.new(board_parent, current_user, args).execute
+
+        {
+          board: response.payload,
+          errors: response.errors
+        }
+      end
+
+      def ready?(**args)
+        if args.values_at(:project_path, :group_path).compact.blank?
+          raise Gitlab::Graphql::Errors::ArgumentError,
+                'group_path or project_path arguments are required'
+        end
+
+        super
+      end
+
+      private
+
+      def find_object(group_path: nil, project_path: nil)
+        if group_path
+          resolve_group(full_path: group_path)
+        else
+          resolve_project(full_path: project_path)
+        end
+      end
+    end
+  end
+end

app/graphql/types/mutation_type.rb

@@ -14,6 +14,7 @@ module Types
     mount_mutation Mutations::AwardEmojis::Add
     mount_mutation Mutations::AwardEmojis::Remove
     mount_mutation Mutations::AwardEmojis::Toggle
+    mount_mutation Mutations::Boards::Create
     mount_mutation Mutations::Boards::Destroy
     mount_mutation Mutations::Boards::Issues::IssueMoveList
     mount_mutation Mutations::Boards::Lists::Create

changelogs/unreleased/233433-create-board-graphql.yml

+---
+title: Create an issue board via GraphQL mutation
+merge_request: 44298
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -3061,6 +3061,71 @@ type CreateAnnotationPayload {
   errors: [String!]!
 }
 
+"""
+Autogenerated input type of CreateBoard
+"""
+input CreateBoardInput {
+  """
+  The ID of the user to be assigned to the board.
+  """
+  assigneeId: String
+
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  The group full path the board is associated with.
+  """
+  groupPath: ID
+
+  """
+  The IDs of labels to be added to the board.
+  """
+  labelIds: [ID!]
+
+  """
+  The ID of the milestone to be assigned to the board.
+  """
+  milestoneId: ID
+
+  """
+  The board name.
+  """
+  name: String
+
+  """
+  The project full path the board is associated with.
+  """
+  projectPath: ID
+
+  """
+  The weight of the board.
+  """
+  weight: Boolean
+}
+
+"""
+Autogenerated return type of CreateBoard
+"""
+type CreateBoardPayload {
+  """
+  The board after mutation.
+  """
+  board: Board
+
+  """
+  A unique identifier for the client performing the mutation.
+  """
+  clientMutationId: String
+
+  """
+  Errors encountered during execution of the mutation.
+  """
+  errors: [String!]!
+}
+
 """
 Autogenerated input type of CreateBranch
 """
@@ -11766,6 +11831,7 @@ type Mutation {
   configureSast(input: ConfigureSastInput!): ConfigureSastPayload
   createAlertIssue(input: CreateAlertIssueInput!): CreateAlertIssuePayload
   createAnnotation(input: CreateAnnotationInput!): CreateAnnotationPayload
+  createBoard(input: CreateBoardInput!): CreateBoardPayload
   createBranch(input: CreateBranchInput!): CreateBranchPayload
   createClusterAgent(input: CreateClusterAgentInput!): CreateClusterAgentPayload
   createDiffNote(input: CreateDiffNoteInput!): CreateDiffNotePayload

doc/api/graphql/reference/gitlab_schema.json

@@ -8208,6 +8208,172 @@
           "enumValues": null,
           "possibleTypes": null
         },
+        {
+          "kind": "INPUT_OBJECT",
+          "name": "CreateBoardInput",
+          "description": "Autogenerated input type of CreateBoard",
+          "fields": null,
+          "inputFields": [
+            {
+              "name": "projectPath",
+              "description": "The project full path the board is associated with.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "ID",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "groupPath",
+              "description": "The group full path the board is associated with.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "ID",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "name",
+              "description": "The board name.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "assigneeId",
+              "description": "The ID of the user to be assigned to the board.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "String",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "milestoneId",
+              "description": "The ID of the milestone to be assigned to the board.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "ID",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "weight",
+              "description": "The weight of the board.",
+              "type": {
+                "kind": "SCALAR",
+                "name": "Boolean",
+                "ofType": null
+              },
+              "defaultValue": null
+            },
+            {
+              "name": "labelIds",
+              "description": "The IDs of labels to be added to the board.",
+              "type": {
+                "kind": "LIST",
+                "name": null,
+                "ofType": {
+                  "kind": "NON_NULL",
+                  "name": null,
+                  "ofType": {
+                    "kind": "SCALAR",
+                    "name": "ID",
+                    "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": "CreateBoardPayload",
+          "description": "Autogenerated return type of CreateBoard",
+          "fields": [
+            {
+              "name": "board",
+              "description": "The board after mutation.",
+              "args": [
+
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "Board",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
+            {
+              "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
+            }
+          ],
+          "inputFields": null,
+          "interfaces": [
+
+          ],
+          "enumValues": null,
+          "possibleTypes": null
+        },
         {
           "kind": "INPUT_OBJECT",
           "name": "CreateBranchInput",
@@ -32820,6 +32986,33 @@
               "isDeprecated": false,
               "deprecationReason": null
             },
+            {
+              "name": "createBoard",
+              "description": null,
+              "args": [
+                {
+                  "name": "input",
+                  "description": null,
+                  "type": {
+                    "kind": "NON_NULL",
+                    "name": null,
+                    "ofType": {
+                      "kind": "INPUT_OBJECT",
+                      "name": "CreateBoardInput",
+                      "ofType": null
+                    }
+                  },
+                  "defaultValue": null
+                }
+              ],
+              "type": {
+                "kind": "OBJECT",
+                "name": "CreateBoardPayload",
+                "ofType": null
+              },
+              "isDeprecated": false,
+              "deprecationReason": null
+            },
             {
               "name": "createBranch",
               "description": null,

doc/api/graphql/reference/index.md

@@ -472,6 +472,16 @@ Autogenerated return type of CreateAnnotation.
 | `clientMutationId` | String | A unique identifier for the client performing the mutation. |
 | `errors` | String! => Array | Errors encountered during execution of the mutation. |
 
+### CreateBoardPayload
+
+Autogenerated return type of CreateBoard.
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `board` | Board | The board after mutation. |
+| `clientMutationId` | String | A unique identifier for the client performing the mutation. |
+| `errors` | String! => Array | Errors encountered during execution of the mutation. |
+
 ### CreateBranchPayload
 
 Autogenerated return type of CreateBranch.

ee/spec/requests/api/graphql/mutations/boards/create_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Boards::Create do
+  let_it_be(:parent) { create(:group) }
+  let(:group_path) { parent.full_path }
+  let(:params) do
+    {
+      group_path: group_path,
+      name: name
+    }
+  end
+
+  it_behaves_like 'boards create mutation'
+end

spec/requests/api/graphql/mutations/boards/create_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Mutations::Boards::Create do
+  let_it_be(:parent) { create(:project) }
+  let(:project_path) { parent.full_path }
+  let(:params) do
+    {
+      project_path: project_path,
+      name: name
+    }
+  end
+
+  it_behaves_like 'boards create mutation'
+end

spec/support/shared_examples/graphql/mutations/boards_create_shared_examples.rb

+# frozen_string_literal: true
+
+RSpec.shared_examples 'boards create mutation' do
+  include GraphqlHelpers
+
+  let_it_be(:current_user, reload: true) { create(:user) }
+  let(:name) { 'board name' }
+  let(:mutation) { graphql_mutation(:create_board, params) }
+
+  subject { post_graphql_mutation(mutation, current_user: current_user) }
+
+  def mutation_response
+    graphql_mutation_response(:create_board)
+  end
+
+  context 'when the user does not have permission' do
+    it_behaves_like 'a mutation that returns a top-level access error'
+
+    it 'does not create the board' do
+      expect { subject }.not_to change { Board.count }
+    end
+  end
+
+  context 'when the user has permission' do
+    before do
+      parent.add_maintainer(current_user)
+    end
+
+    context 'when the parent (project_path or group_path) param is given' do
+      context 'when everything is ok' do
+        it 'creates the board' do
+          expect { subject }.to change { Board.count }.from(0).to(1)
+        end
+
+        it 'returns the created board' do
+          post_graphql_mutation(mutation, current_user: current_user)
+
+          expect(mutation_response).to have_key('board')
+          expect(mutation_response['board']['name']).to eq(name)
+        end
+      end
+
+      context 'when the Boards::CreateService returns an error response' do
+        before do
+          allow_next_instance_of(Boards::CreateService) do |service|
+            allow(service).to receive(:execute).and_return(ServiceResponse.error(message: 'There was an error.'))
+          end
+        end
+
+        it 'does not create a board' do
+          expect { subject }.not_to change { Board.count }
+        end
+
+        it 'returns an error' do
+          post_graphql_mutation(mutation, current_user: current_user)
+
+          expect(mutation_response).to have_key('board')
+          expect(mutation_response['board']).to be_nil
+          expect(mutation_response['errors'].first).to eq('There was an error.')
+        end
+      end
+    end
+
+    context 'when neither project_path nor group_path param is given' do
+      let(:params) { { name: name } }
+
+      it_behaves_like 'a mutation that returns top-level errors',
+        errors: ['group_path or project_path arguments are required']
+
+      it 'does not create the board' do
+        expect { subject }.not_to change { Board.count }
+      end
+    end
+  end
+end