Set up JobArtifactType with a dummy download_path

And add artifacts field to JobType

app/graphql/types/ci/job_artifact_file_type_enum.rb

+# frozen_string_literal: true
+
+module Types
+  module Ci
+    class JobArtifactFileTypeEnum < BaseEnum
+      graphql_name 'JobArtifactFileType'
+
+      ::Ci::JobArtifact::TYPE_AND_FORMAT_PAIRS.keys.each do |file_type|
+        value file_type.to_s.upcase, value: file_type.to_s
+      end
+    end
+  end
+end

app/graphql/types/ci/job_artifact_type.rb

+# frozen_string_literal: true
+
+module Types
+  module Ci
+    # rubocop: disable Graphql/AuthorizeTypes
+    class JobArtifactType < BaseObject
+      graphql_name 'CiJobArtifact'
+
+      field :download_path, GraphQL::STRING_TYPE, null: true,
+            description: "URL for downloading the artifact's file"
+
+      field :file_type, ::Types::Ci::JobArtifactFileTypeEnum, null: true,
+            description: 'File type of the artifact'
+
+      def download_path
+        ::Gitlab::Routing.url_helpers.download_project_job_artifacts_path(
+          object.project,
+          object.job,
+          file_type: object.file_type
+        )
+      end
+    end
+  end
+end

app/graphql/types/ci/job_type.rb

@@ -9,15 +9,28 @@ module Types
       field :pipeline, Types::Ci::PipelineType, null: false,
         description: 'Pipeline the job belongs to',
         resolve: -> (build, _, _) { Gitlab::Graphql::Loaders::BatchModelLoader.new(::Ci::Pipeline, build.pipeline_id).find }
+
       field :name, GraphQL::STRING_TYPE, null: true,
         description: 'Name of the job'
+
       field :needs, JobType.connection_type, null: true,
         description: 'Builds that must complete before the jobs run'
+
       field :detailed_status, Types::Ci::DetailedStatusType, null: true,
             description: 'Detailed status of the job',
             resolve: -> (obj, _args, ctx) { obj.detailed_status(ctx[:current_user]) }
+
       field :scheduled_at, Types::TimeType, null: true,
         description: 'Schedule for the build'
+
+      field :artifacts, Types::Ci::JobArtifactType.connection_type, null: true,
+            description: 'Artifacts generated by the job'
+
+      def artifacts
+        if object.is_a?(::Ci::Build)
+          object.job_artifacts
+        end
+      end
     end
   end
 end

changelogs/unreleased/251015-artifact-download.yml

+---
+title: Add artifacts field to JobType
+merge_request: 48207
+author:
+type: added

doc/api/graphql/reference/gitlab_schema.graphql

@@ -2315,6 +2315,31 @@ type CiGroupEdge {
 }
 
 type CiJob {
+  """
+  Artifacts generated by the job
+  """
+  artifacts(
+    """
+    Returns the elements in the list that come after the specified cursor.
+    """
+    after: String
+
+    """
+    Returns the elements in the list that come before the specified cursor.
+    """
+    before: String
+
+    """
+    Returns the first _n_ elements from the list.
+    """
+    first: Int
+
+    """
+    Returns the last _n_ elements from the list.
+    """
+    last: Int
+  ): CiJobArtifactConnection
+
   """
   Detailed status of the job
   """
@@ -2361,6 +2386,53 @@ type CiJob {
   scheduledAt: Time
 }
 
+type CiJobArtifact {
+  """
+  URL for downloading the artifact's file
+  """
+  downloadPath: String
+
+  """
+  File type of the artifact
+  """
+  fileType: JobArtifactFileType
+}
+
+"""
+The connection type for CiJobArtifact.
+"""
+type CiJobArtifactConnection {
+  """
+  A list of edges.
+  """
+  edges: [CiJobArtifactEdge]
+
+  """
+  A list of nodes.
+  """
+  nodes: [CiJobArtifact]
+
+  """
+  Information to aid in pagination.
+  """
+  pageInfo: PageInfo!
+}
+
+"""
+An edge in a connection.
+"""
+type CiJobArtifactEdge {
+  """
+  A cursor for use in pagination.
+  """
+  cursor: String!
+
+  """
+  The item at the end of the edge.
+  """
+  node: CiJobArtifact
+}
+
 """
 The connection type for CiJob.
 """
@@ -12038,6 +12110,36 @@ input JiraUsersMappingInputType {
   jiraAccountId: String!
 }
 
+enum JobArtifactFileType {
+  ACCESSIBILITY
+  API_FUZZING
+  ARCHIVE
+  BROWSER_PERFORMANCE
+  CLUSTER_APPLICATIONS
+  COBERTURA
+  CODEQUALITY
+  CONTAINER_SCANNING
+  COVERAGE_FUZZING
+  DAST
+  DEPENDENCY_SCANNING
+  DOTENV
+  JUNIT
+  LICENSE_MANAGEMENT
+  LICENSE_SCANNING
+  LOAD_PERFORMANCE
+  LSIF
+  METADATA
+  METRICS
+  METRICS_REFEREE
+  NETWORK_REFEREE
+  PERFORMANCE
+  REQUIREMENTS
+  SAST
+  SECRET_DETECTION
+  TERRAFORM
+  TRACE
+}
+
 type Label {
   """
   Background color of the label

doc/api/graphql/reference/index.md

@@ -380,12 +380,20 @@ Represents the total number of issues and their weights for a particular day.
 
 | Field | Type | Description |
 | ----- | ---- | ----------- |
+| `artifacts` | CiJobArtifactConnection | Artifacts generated by the job |
 | `detailedStatus` | DetailedStatus | Detailed status of the job |
 | `name` | String | Name of the job |
 | `needs` | CiJobConnection | Builds that must complete before the jobs run |
 | `pipeline` | Pipeline! | Pipeline the job belongs to |
 | `scheduledAt` | Time | Schedule for the build |
 
+### CiJobArtifact
+
+| Field | Type | Description |
+| ----- | ---- | ----------- |
+| `downloadPath` | String | URL for downloading the artifact's file |
+| `fileType` | JobArtifactFileType | File type of the artifact |
+
 ### CiStage
 
 | Field | Type | Description |
@@ -4145,6 +4153,38 @@ Iteration ID wildcard values.
 | `ANY` | An iteration is assigned |
 | `NONE` | No iteration is assigned |
 
+### JobArtifactFileType
+
+| Value | Description |
+| ----- | ----------- |
+| `ACCESSIBILITY` |  |
+| `API_FUZZING` |  |
+| `ARCHIVE` |  |
+| `BROWSER_PERFORMANCE` |  |
+| `CLUSTER_APPLICATIONS` |  |
+| `COBERTURA` |  |
+| `CODEQUALITY` |  |
+| `CONTAINER_SCANNING` |  |
+| `COVERAGE_FUZZING` |  |
+| `DAST` |  |
+| `DEPENDENCY_SCANNING` |  |
+| `DOTENV` |  |
+| `JUNIT` |  |
+| `LICENSE_MANAGEMENT` |  |
+| `LICENSE_SCANNING` |  |
+| `LOAD_PERFORMANCE` |  |
+| `LSIF` |  |
+| `METADATA` |  |
+| `METRICS` |  |
+| `METRICS_REFEREE` |  |
+| `NETWORK_REFEREE` |  |
+| `PERFORMANCE` |  |
+| `REQUIREMENTS` |  |
+| `SAST` |  |
+| `SECRET_DETECTION` |  |
+| `TERRAFORM` |  |
+| `TRACE` |  |
+
 ### ListLimitMetric
 
 List limit metric setting.

spec/graphql/types/ci/job_artifact_file_type_enum_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe GitlabSchema.types['JobArtifactFileType'] do
+  it 'exposes all job artifact file types' do
+    expect(described_class.values.keys).to contain_exactly(
+      *::Ci::JobArtifact::TYPE_AND_FORMAT_PAIRS.keys.map(&:to_s).map(&:upcase)
+    )
+  end
+end

spec/graphql/types/ci/job_artifact_type_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe GitlabSchema.types['CiJobArtifact'] do
+  it 'has the correct fields' do
+    expected_fields = [:download_path, :file_type]
+
+    expect(described_class).to have_graphql_fields(*expected_fields)
+  end
+end

spec/graphql/types/ci/job_type_spec.rb

@@ -12,6 +12,7 @@ RSpec.describe Types::Ci::JobType do
       needs
       detailedStatus
       scheduledAt
+      artifacts
     ]
 
     expect(described_class).to have_graphql_fields(*expected_fields)

spec/requests/api/graphql/ci/job_artifacts_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Query.project(fullPath).pipelines.jobs.artifacts' do
+  include GraphqlHelpers
+
+  let_it_be(:project) { create(:project, :repository, :public) }
+  let_it_be(:pipeline) { create(:ci_pipeline, project: project) }
+  let_it_be(:user) { create(:user) }
+
+  let_it_be(:query) do
+    %(
+      query {
+        project(fullPath: "#{project.full_path}") {
+          pipelines {
+            nodes {
+              jobs {
+                nodes {
+                  artifacts {
+                    nodes {
+                      downloadPath
+                      fileType
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      }
+    )
+  end
+
+  it 'returns the fields for the artifacts' do
+    job = create(:ci_build, pipeline: pipeline)
+    create(:ci_job_artifact, :junit, job: job)
+
+    post_graphql(query, current_user: user)
+
+    expect(response).to have_gitlab_http_status(:ok)
+
+    pipelines_data = graphql_data.dig('project', 'pipelines', 'nodes')
+    jobs_data = pipelines_data.first.dig('jobs', 'nodes')
+    artifact_data = jobs_data.first.dig('artifacts', 'nodes').first
+
+    expect(artifact_data['downloadPath']).to eq(
+      "/#{project.full_path}/-/jobs/#{job.id}/artifacts/download?file_type=junit"
+    )
+    expect(artifact_data['fileType']).to eq('JUNIT')
+  end
+end

spec/requests/api/graphql/ci/jobs_spec.rb

 # frozen_string_literal: true
 require 'spec_helper'
 
-RSpec.describe 'Query.project.pipeline.stages.groups.jobs' do
+RSpec.describe 'Query.project.pipeline' do
   include GraphqlHelpers
 
-  let(:project) { create(:project, :repository, :public) }
-  let(:user) { create(:user) }
-  let(:pipeline) do
-    pipeline = create(:ci_pipeline, project: project, user: user)
-    stage = create(:ci_stage_entity, pipeline: pipeline, name: 'first')
-    create(:commit_status, stage_id: stage.id, pipeline: pipeline, name: 'my test job')
-
-    pipeline
-  end
+  let_it_be(:project) { create(:project, :repository, :public) }
+  let_it_be(:user) { create(:user) }
 
   def first(field)
     [field.pluralize, 'nodes', 0]
   end
 
-  let(:jobs_graphql_data) { graphql_data.dig(*%w[project pipeline], *first('stage'), *first('group'), 'jobs', 'nodes') }
-
-  let(:query) do
-    %(
-      query {
-        project(fullPath: "#{project.full_path}") {
-          pipeline(iid: "#{pipeline.iid}") {
-            stages {
-              nodes {
-                name
-                groups {
-                  nodes {
-                    name
-                    jobs {
-                      nodes {
-                        name
-                        pipeline {
-                          id
+  describe '.stages.groups.jobs' do
+    let(:pipeline) do
+      pipeline = create(:ci_pipeline, project: project, user: user)
+      stage = create(:ci_stage_entity, pipeline: pipeline, name: 'first')
+      create(:commit_status, stage_id: stage.id, pipeline: pipeline, name: 'my test job')
+
+      pipeline
+    end
+
+    let(:jobs_graphql_data) { graphql_data.dig(*%w[project pipeline], *first('stage'), *first('group'), 'jobs', 'nodes') }
+
+    let(:query) do
+      %(
+        query {
+          project(fullPath: "#{project.full_path}") {
+            pipeline(iid: "#{pipeline.iid}") {
+              stages {
+                nodes {
+                  name
+                  groups {
+                    nodes {
+                      name
+                      jobs {
+                        nodes {
+                          name
+                          pipeline {
+                            id
+                          }
                         }
                       }
                     }
@@ -45,17 +48,15 @@ RSpec.describe 'Query.project.pipeline.stages.groups.jobs' do
             }
           }
         }
-      }
-    )
-  end
+      )
+    end
 
-  it 'returns the jobs of a pipeline stage' do
-    post_graphql(query, current_user: user)
+    it 'returns the jobs of a pipeline stage' do
+      post_graphql(query, current_user: user)
 
-    expect(jobs_graphql_data).to contain_exactly(a_hash_including('name' => 'my test job'))
-  end
+      expect(jobs_graphql_data).to contain_exactly(a_hash_including('name' => 'my test job'))
+    end
 
-  context 'when fetching jobs from the pipeline' do
     it 'avoids N+1 queries', :aggregate_failures do
       control_count = ActiveRecord::QueryRecorder.new do
         post_graphql(query, current_user: user)
@@ -112,4 +113,50 @@ RSpec.describe 'Query.project.pipeline.stages.groups.jobs' do
       ])
     end
   end
+
+  describe '.jobs.artifacts' do
+    let_it_be(:pipeline) { create(:ci_pipeline, project: project) }
+
+    let(:query) do
+      %(
+        query {
+          project(fullPath: "#{project.full_path}") {
+            pipeline(iid: "#{pipeline.iid}") {
+              jobs {
+                nodes {
+                  artifacts {
+                    nodes {
+                      downloadPath
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+      )
+    end
+
+    context 'when the job is a build' do
+      it "returns the build's artifacts" do
+        create(:ci_build, :artifacts, pipeline: pipeline)
+
+        post_graphql(query, current_user: user)
+
+        job_data = graphql_data.dig('project', 'pipeline', 'jobs', 'nodes').first
+        expect(job_data.dig('artifacts', 'nodes').count).to be(2)
+      end
+    end
+
+    context 'when the job is not a build' do
+      it 'returns nil' do
+        create(:ci_bridge, pipeline: pipeline)
+
+        post_graphql(query, current_user: user)
+
+        job_data = graphql_data.dig('project', 'pipeline', 'jobs', 'nodes').first
+        expect(job_data['artifacts']).to be_nil
+      end
+    end
+  end
 end