# frozen_string_literal: true

require 'spec_helper'

def match_mr1_note(content_regex)
  MergeRequest.find_by(title: 'MR1').notes.select { |n| n.note.match(/#{content_regex}/)}.first
end

describe Gitlab::ImportExport::Project::TreeRestorer do
  include ImportExport::CommonUtil
  using RSpec::Parameterized::TableSyntax

  let(:shared) { project.import_export_shared }

  RSpec.shared_examples 'project tree restorer work properly' do |reader, ndjson_enabled|
    describe 'restore project tree' do
      before_all do
        # Using an admin for import, so we can check assignment of existing members
        @user = create(:admin)
        @existing_members = [
          create(:user, email: 'bernard_willms@gitlabexample.com'),
          create(:user, email: 'saul_will@gitlabexample.com')
        ]

        RSpec::Mocks.with_temporary_scope do
          @project = create(:project, :builds_enabled, :issues_disabled, name: 'project', path: 'project')
          @shared = @project.import_export_shared

          stub_all_feature_flags
          stub_feature_flags(project_import_ndjson: ndjson_enabled)

          setup_import_export_config('complex')
          setup_reader(reader)

          allow_any_instance_of(Repository).to receive(:fetch_source_branch!).and_return(true)
          allow_any_instance_of(Gitlab::Git::Repository).to receive(:branch_exists?).and_return(false)

          expect(@shared).not_to receive(:error)
          expect_any_instance_of(Gitlab::Git::Repository).to receive(:create_branch).with('feature', 'DCBA')
          allow_any_instance_of(Gitlab::Git::Repository).to receive(:create_branch)

          project_tree_restorer = described_class.new(user: @user, shared: @shared, project: @project)

          @restored_project_json = project_tree_restorer.restore
        end
      end

      context 'JSON' do
        it 'restores models based on JSON' do
          expect(@restored_project_json).to be_truthy
        end

        it 'restore correct project features' do
          project = Project.find_by_path('project')

          expect(project.project_feature.issues_access_level).to eq(ProjectFeature::PRIVATE)
          expect(project.project_feature.builds_access_level).to eq(ProjectFeature::PRIVATE)
          expect(project.project_feature.snippets_access_level).to eq(ProjectFeature::PRIVATE)
          expect(project.project_feature.wiki_access_level).to eq(ProjectFeature::PRIVATE)
          expect(project.project_feature.merge_requests_access_level).to eq(ProjectFeature::PRIVATE)
        end

        it 'has the project description' do
          expect(Project.find_by_path('project').description).to eq('Nisi et repellendus ut enim quo accusamus vel magnam.')
        end

        it 'has the same label associated to two issues' do
          expect(ProjectLabel.find_by_title('test2').issues.count).to eq(2)
        end

        it 'has milestones associated to two separate issues' do
          expect(Milestone.find_by_description('test milestone').issues.count).to eq(2)
        end

        context 'when importing a project with cached_markdown_version and note_html' do
          context 'for an Issue' do
            it 'does not import note_html' do
              note_content = 'Quo reprehenderit aliquam qui dicta impedit cupiditate eligendi'
              issue_note = Issue.find_by(description: 'Aliquam enim illo et possimus.').notes.select { |n| n.note.match(/#{note_content}/)}.first

              expect(issue_note.note_html).to match(/#{note_content}/)
            end
          end

          context 'for a Merge Request' do
            it 'does not import note_html' do
              note_content = 'Sit voluptatibus eveniet architecto quidem'
              merge_request_note = match_mr1_note(note_content)

              expect(merge_request_note.note_html).to match(/#{note_content}/)
            end
          end

          context 'merge request system note metadata' do
            it 'restores title action for unmark wip' do
              merge_request_note = match_mr1_note('unmarked as a \\*\\*Work In Progress\\*\\*')

              expect(merge_request_note.noteable_type).to eq('MergeRequest')
              expect(merge_request_note.system).to eq(true)
              expect(merge_request_note.system_note_metadata.action).to eq('title')
              expect(merge_request_note.system_note_metadata.commit_count).to be_nil
            end

            it 'restores commit action and commit count for pushing 3 commits' do
              merge_request_note = match_mr1_note('added 3 commits')

              expect(merge_request_note.noteable_type).to eq('MergeRequest')
              expect(merge_request_note.system).to eq(true)
              expect(merge_request_note.system_note_metadata.action).to eq('commit')
              expect(merge_request_note.system_note_metadata.commit_count).to eq(3)
            end
          end
        end

        it 'creates a valid pipeline note' do
          expect(Ci::Pipeline.find_by_sha('sha-notes').notes).not_to be_empty
        end

        it 'pipeline has the correct user ID' do
          expect(Ci::Pipeline.find_by_sha('sha-notes').user_id).to eq(@user.id)
        end

        it 'restores pipelines with missing ref' do
          expect(Ci::Pipeline.where(ref: nil)).not_to be_empty
        end

        it 'restores pipeline for merge request' do
          pipeline = Ci::Pipeline.find_by_sha('048721d90c449b244b7b4c53a9186b04330174ec')

          expect(pipeline).to be_valid
          expect(pipeline.tag).to be_falsey
          expect(pipeline.source).to eq('merge_request_event')
          expect(pipeline.merge_request.id).to be > 0
          expect(pipeline.merge_request.target_branch).to eq('feature')
          expect(pipeline.merge_request.source_branch).to eq('feature_conflict')
        end

        it 'restores pipelines based on ascending id order' do
          expected_ordered_shas = %w[
          2ea1f3dec713d940208fb5ce4a38765ecb5d3f73
          ce84140e8b878ce6e7c4d298c7202ff38170e3ac
          048721d90c449b244b7b4c53a9186b04330174ec
          sha-notes
          5f923865dde3436854e9ceb9cdb7815618d4e849
          d2d430676773caa88cdaf7c55944073b2fd5561a
          2ea1f3dec713d940208fb5ce4a38765ecb5d3f73
          ]

          project = Project.find_by_path('project')

          project.ci_pipelines.order(:id).each_with_index do |pipeline, i|
            expect(pipeline['sha']).to eq expected_ordered_shas[i]
          end
        end

        it 'preserves updated_at on issues' do
          issue = Issue.find_by(description: 'Aliquam enim illo et possimus.')

          expect(issue.reload.updated_at.to_s).to eq('2016-06-14 15:02:47 UTC')
        end

        it 'has multiple issue assignees' do
          expect(Issue.find_by(title: 'Voluptatem').assignees).to contain_exactly(@user, *@existing_members)
          expect(Issue.find_by(title: 'Issue without assignees').assignees).to be_empty
        end

        it 'restores timelogs for issues' do
          timelog = Issue.find_by(title: 'issue_with_timelogs').timelogs.last

          aggregate_failures do
            expect(timelog.time_spent).to eq(72000)
            expect(timelog.spent_at).to eq("2019-12-27T00:00:00.000Z")
          end
        end

        it 'contains the merge access levels on a protected branch' do
          expect(ProtectedBranch.first.merge_access_levels).not_to be_empty
        end

        it 'contains the push access levels on a protected branch' do
          expect(ProtectedBranch.first.push_access_levels).not_to be_empty
        end

        it 'contains the create access levels on a protected tag' do
          expect(ProtectedTag.first.create_access_levels).not_to be_empty
        end

        it 'restores issue resource label events' do
          expect(Issue.find_by(title: 'Voluptatem').resource_label_events).not_to be_empty
        end

        it 'restores merge requests resource label events' do
          expect(MergeRequest.find_by(title: 'MR1').resource_label_events).not_to be_empty
        end

        it 'restores suggestion' do
          note = Note.find_by("note LIKE 'Saepe asperiores exercitationem non dignissimos laborum reiciendis et ipsum%'")

          expect(note.suggestions.count).to eq(1)
          expect(note.suggestions.first.from_content).to eq("Original line\n")
        end

        context 'event at forth level of the tree' do
          let(:event) { Event.find_by(action: 6) }

          it 'restores the event' do
            expect(event).not_to be_nil
          end

          it 'has the action' do
            expect(event.action).not_to be_nil
          end

          it 'event belongs to note, belongs to merge request, belongs to a project' do
            expect(event.note.noteable.project).not_to be_nil
          end
        end

        it 'has the correct data for merge request diff files' do
          expect(MergeRequestDiffFile.where.not(diff: nil).count).to eq(55)
        end

        it 'has the correct data for merge request diff commits' do
          expect(MergeRequestDiffCommit.count).to eq(77)
        end

        it 'has the correct data for merge request latest_merge_request_diff' do
          MergeRequest.find_each do |merge_request|
            expect(merge_request.latest_merge_request_diff_id).to eq(merge_request.merge_request_diffs.maximum(:id))
          end
        end

        it 'has labels associated to label links, associated to issues' do
          expect(Label.first.label_links.first.target).not_to be_nil
        end

        it 'has project labels' do
          expect(ProjectLabel.count).to eq(3)
        end

        it 'has no group labels' do
          expect(GroupLabel.count).to eq(0)
        end

        it 'has issue boards' do
          expect(Project.find_by_path('project').boards.count).to eq(1)
        end

        it 'has lists associated with the issue board' do
          expect(Project.find_by_path('project').boards.find_by_name('TestBoardABC').lists.count).to eq(3)
        end

        it 'has a project feature' do
          expect(@project.project_feature).not_to be_nil
        end

        it 'has custom attributes' do
          expect(@project.custom_attributes.count).to eq(2)
        end

        it 'has badges' do
          expect(@project.project_badges.count).to eq(2)
        end

        it 'has snippets' do
          expect(@project.snippets.count).to eq(1)
        end

        it 'has award emoji for a snippet' do
          award_emoji = @project.snippets.first.award_emoji

          expect(award_emoji.map(&:name)).to contain_exactly('thumbsup', 'coffee')
        end

        it 'snippet has notes' do
          expect(@project.snippets.first.notes.count).to eq(1)
        end

        it 'snippet has award emojis on notes' do
          award_emoji = @project.snippets.first.notes.first.award_emoji.first

          expect(award_emoji.name).to eq('thumbsup')
        end

        it 'restores `ci_cd_settings` : `group_runners_enabled` setting' do
          expect(@project.ci_cd_settings.group_runners_enabled?).to eq(false)
        end

        it 'restores `auto_devops`' do
          expect(@project.auto_devops_enabled?).to eq(true)
          expect(@project.auto_devops.deploy_strategy).to eq('continuous')
        end

        it 'restores the correct service' do
          expect(CustomIssueTrackerService.first).not_to be_nil
        end

        it 'restores zoom meetings' do
          meetings = @project.issues.first.zoom_meetings

          expect(meetings.count).to eq(1)
          expect(meetings.first.url).to eq('https://zoom.us/j/123456789')
        end

        it 'restores sentry issues' do
          sentry_issue = @project.issues.first.sentry_issue

          expect(sentry_issue.sentry_issue_identifier).to eq(1234567891)
        end

        it 'has award emoji for an issue' do
          award_emoji = @project.issues.first.award_emoji.first

          expect(award_emoji.name).to eq('musical_keyboard')
        end

        it 'has award emoji for a note in an issue' do
          award_emoji = @project.issues.first.notes.first.award_emoji.first

          expect(award_emoji.name).to eq('clapper')
        end

        it 'restores container_expiration_policy' do
          policy = Project.find_by_path('project').container_expiration_policy

          aggregate_failures do
            expect(policy).to be_an_instance_of(ContainerExpirationPolicy)
            expect(policy).to be_persisted
            expect(policy.cadence).to eq('3month')
          end
        end

        it 'restores error_tracking_setting' do
          setting = @project.error_tracking_setting

          aggregate_failures do
            expect(setting.api_url).to eq("https://gitlab.example.com/api/0/projects/sentry-org/sentry-project")
            expect(setting.project_name).to eq("Sentry Project")
            expect(setting.organization_name).to eq("Sentry Org")
          end
        end

        it 'restores external pull requests' do
          external_pr = @project.external_pull_requests.last

          aggregate_failures do
            expect(external_pr.pull_request_iid).to eq(4)
            expect(external_pr.source_branch).to eq("feature")
            expect(external_pr.target_branch).to eq("master")
            expect(external_pr.status).to eq("open")
          end
        end

        it 'restores pipeline schedules' do
          pipeline_schedule = @project.pipeline_schedules.last

          aggregate_failures do
            expect(pipeline_schedule.description).to eq('Schedule Description')
            expect(pipeline_schedule.ref).to eq('master')
            expect(pipeline_schedule.cron).to eq('0 4 * * 0')
            expect(pipeline_schedule.cron_timezone).to eq('UTC')
            expect(pipeline_schedule.active).to eq(true)
          end
        end

        it 'restores releases with links' do
          release = @project.releases.last
          link = release.links.last

          aggregate_failures do
            expect(release.tag).to eq('release-1.1')
            expect(release.description).to eq('Some release notes')
            expect(release.name).to eq('release-1.1')
            expect(release.sha).to eq('901de3a8bd5573f4a049b1457d28bc1592ba6bf9')
            expect(release.released_at).to eq('2019-12-26T10:17:14.615Z')

            expect(link.url).to eq('http://localhost/namespace6/project6/-/jobs/140463678/artifacts/download')
            expect(link.name).to eq('release-1.1.dmg')
          end
        end

        context 'Merge requests' do
          it 'always has the new project as a target' do
            expect(MergeRequest.find_by_title('MR1').target_project).to eq(@project)
          end

          it 'has the same source project as originally if source/target are the same' do
            expect(MergeRequest.find_by_title('MR1').source_project).to eq(@project)
          end

          it 'has the new project as target if source/target differ' do
            expect(MergeRequest.find_by_title('MR2').target_project).to eq(@project)
          end

          it 'has no source if source/target differ' do
            expect(MergeRequest.find_by_title('MR2').source_project_id).to be_nil
          end

          it 'has award emoji' do
            award_emoji = MergeRequest.find_by_title('MR1').award_emoji

            expect(award_emoji.map(&:name)).to contain_exactly('thumbsup', 'drum')
          end

          context 'notes' do
            it 'has award emoji' do
              merge_request_note = match_mr1_note('Sit voluptatibus eveniet architecto quidem')
              award_emoji = merge_request_note.award_emoji.first

              expect(award_emoji.name).to eq('tada')
            end
          end
        end

        context 'tokens are regenerated' do
          it 'has new CI trigger tokens' do
            expect(Ci::Trigger.where(token: %w[cdbfasdf44a5958c83654733449e585 33a66349b5ad01fc00174af87804e40]))
              .to be_empty
          end

          it 'has a new CI build token' do
            expect(Ci::Build.where(token: 'abcd')).to be_empty
          end
        end

        context 'has restored the correct number of records' do
          it 'has the correct number of merge requests' do
            expect(@project.merge_requests.size).to eq(9)
          end

          it 'only restores valid triggers' do
            expect(@project.triggers.size).to eq(1)
          end

          it 'has the correct number of pipelines and statuses' do
            expect(@project.ci_pipelines.size).to eq(7)

            @project.ci_pipelines.order(:id).zip([2, 0, 2, 2, 2, 2, 0])
              .each do |(pipeline, expected_status_size)|
              expect(pipeline.statuses.size).to eq(expected_status_size)
            end
          end
        end

        context 'when restoring hierarchy of pipeline, stages and jobs' do
          it 'restores pipelines' do
            expect(Ci::Pipeline.all.count).to be 7
          end

          it 'restores pipeline stages' do
            expect(Ci::Stage.all.count).to be 6
          end

          it 'correctly restores association between stage and a pipeline' do
            expect(Ci::Stage.all).to all(have_attributes(pipeline_id: a_value > 0))
          end

          it 'restores statuses' do
            expect(CommitStatus.all.count).to be 10
          end

          it 'correctly restores association between a stage and a job' do
            expect(CommitStatus.all).to all(have_attributes(stage_id: a_value > 0))
          end

          it 'correctly restores association between a pipeline and a job' do
            expect(CommitStatus.all).to all(have_attributes(pipeline_id: a_value > 0))
          end

          it 'restores a Hash for CommitStatus options' do
            expect(CommitStatus.all.map(&:options).compact).to all(be_a(Hash))
          end

          it 'restores external pull request for the restored pipeline' do
            pipeline_with_external_pr = @project.ci_pipelines.find_by(source: 'external_pull_request_event')

            expect(pipeline_with_external_pr.external_pull_request).to be_persisted
          end

          it 'has no import failures' do
            expect(@project.import_failures.size).to eq 0
          end
        end
      end
    end

    shared_examples 'restores group correctly' do |**results|
      it 'has group label' do
        expect(project.group.labels.size).to eq(results.fetch(:labels, 0))
        expect(project.group.labels.where(type: "GroupLabel").where.not(project_id: nil).count).to eq(0)
      end

      it 'has group milestone' do
        expect(project.group.milestones.size).to eq(results.fetch(:milestones, 0))
      end

      it 'has the correct visibility level' do
        # INTERNAL in the `project.json`, group's is PRIVATE
        expect(project.visibility_level).to eq(Gitlab::VisibilityLevel::PRIVATE)
      end
    end

    context 'project.json file access check' do
      let(:user) { create(:user) }
      let!(:project) { create(:project, :builds_disabled, :issues_disabled, name: 'project', path: 'project') }
      let(:project_tree_restorer) do
        described_class.new(user: user, shared: shared, project: project)
      end
      let(:restored_project_json) { project_tree_restorer.restore }

      it 'does not read a symlink' do
        Dir.mktmpdir do |tmpdir|
          setup_symlink(tmpdir, 'project.json')
          allow(shared).to receive(:export_path).and_call_original

          expect(project_tree_restorer.restore).to eq(false)
          expect(shared.errors).to include('invalid import format')
        end
      end
    end

    context 'Light JSON' do
      let(:user) { create(:user) }
      let!(:project) { create(:project, :builds_disabled, :issues_disabled, name: 'project', path: 'project') }
      let(:project_tree_restorer) { described_class.new(user: user, shared: shared, project: project) }
      let(:restored_project_json) { project_tree_restorer.restore }

      context 'with a simple project' do
        before do
          setup_import_export_config('light')
          setup_reader(reader)

          expect(restored_project_json).to eq(true)
        end

        it 'issue system note metadata restored successfully' do
          note_content = 'created merge request !1 to address this issue'
          note = project.issues.first.notes.select { |n| n.note.match(/#{note_content}/)}.first

          expect(note.noteable_type).to eq('Issue')
          expect(note.system).to eq(true)
          expect(note.system_note_metadata.action).to eq('merge')
          expect(note.system_note_metadata.commit_count).to be_nil
        end

        context 'when there is an existing build with build token' do
          before do
            create(:ci_build, token: 'abcd')
          end

          it_behaves_like 'restores project successfully',
            issues: 1,
            labels: 2,
            label_with_priorities: 'A project label',
            milestones: 1,
            first_issue_labels: 1,
            services: 1
        end

        context 'when there is an existing build with build token' do
          before do
            create(:ci_build, token: 'abcd')
          end

          it_behaves_like 'restores project successfully',
            issues: 1,
            labels: 2,
            label_with_priorities: 'A project label',
            milestones: 1,
            first_issue_labels: 1
        end
      end

      context 'multiple pipelines reference the same external pull request' do
        before do
          setup_import_export_config('multi_pipeline_ref_one_external_pr')
          setup_reader(reader)

          expect(restored_project_json).to eq(true)
        end

        it_behaves_like 'restores project successfully',
          issues: 0,
          labels: 0,
          milestones: 0,
          ci_pipelines: 2,
          external_pull_requests: 1,
          import_failures: 0

        it 'restores external pull request for the restored pipelines' do
          external_pr = project.external_pull_requests.first

          project.ci_pipelines.each do |pipeline_with_external_pr|
            expect(pipeline_with_external_pr.external_pull_request).to be_persisted
            expect(pipeline_with_external_pr.external_pull_request).to eq(external_pr)
          end
        end
      end

      context 'when post import action throw non-retriable exception' do
        let(:exception) { StandardError.new('post_import_error') }

        before do
          setup_import_export_config('light')
          setup_reader(reader)

          expect(project)
            .to receive(:merge_requests)
            .and_raise(exception)
        end

        it 'report post import error' do
          expect(restored_project_json).to eq(false)
          expect(shared.errors).to include('post_import_error')
        end
      end

      context 'when post import action throw retriable exception one time' do
        let(:exception) { GRPC::DeadlineExceeded.new }

        before do
          setup_import_export_config('light')
          setup_reader(reader)

          expect(project)
            .to receive(:merge_requests)
            .and_raise(exception)
          expect(project)
            .to receive(:merge_requests)
            .and_call_original
          expect(restored_project_json).to eq(true)
        end

        it_behaves_like 'restores project successfully',
          issues: 1,
          labels: 2,
          label_with_priorities: 'A project label',
          milestones: 1,
          first_issue_labels: 1,
          services: 1,
          import_failures: 1

        it 'records the failures in the database' do
          import_failure = ImportFailure.last

          expect(import_failure.project_id).to eq(project.id)
          expect(import_failure.relation_key).to be_nil
          expect(import_failure.relation_index).to be_nil
          expect(import_failure.exception_class).to eq('GRPC::DeadlineExceeded')
          expect(import_failure.exception_message).to be_present
          expect(import_failure.correlation_id_value).not_to be_empty
          expect(import_failure.created_at).to be_present
        end
      end

      context 'when the project has overridden params in import data' do
        before do
          setup_import_export_config('light')
          setup_reader(reader)
        end

        it 'handles string versions of visibility_level' do
          # Project needs to be in a group for visibility level comparison
          # to happen
          group = create(:group)
          project.group = group

          project.create_import_data(data: { override_params: { visibility_level: Gitlab::VisibilityLevel::INTERNAL.to_s } })

          expect(restored_project_json).to eq(true)
          expect(project.visibility_level).to eq(Gitlab::VisibilityLevel::INTERNAL)
        end

        it 'overwrites the params stored in the JSON' do
          project.create_import_data(data: { override_params: { description: "Overridden" } })

          expect(restored_project_json).to eq(true)
          expect(project.description).to eq("Overridden")
        end

        it 'does not allow setting params that are excluded from import_export settings' do
          project.create_import_data(data: { override_params: { lfs_enabled: true } })

          expect(restored_project_json).to eq(true)
          expect(project.lfs_enabled).to be_falsey
        end

        it 'overrides project feature access levels' do
          access_level_keys = project.project_feature.attributes.keys.select { |a| a =~ /_access_level/ }

          # `pages_access_level` is not included, since it is not available in the public API
          # and has a dependency on project's visibility level
          # see ProjectFeature model
          access_level_keys.delete('pages_access_level')

          disabled_access_levels = Hash[access_level_keys.collect { |item| [item, 'disabled'] }]

          project.create_import_data(data: { override_params: disabled_access_levels })

          expect(restored_project_json).to eq(true)

          aggregate_failures do
            access_level_keys.each do |key|
              expect(project.public_send(key)).to eq(ProjectFeature::DISABLED)
            end
          end
        end
      end

      context 'with a project that has a group' do
        let!(:project) do
          create(:project,
                 :builds_disabled,
                 :issues_disabled,
                 name: 'project',
                 path: 'project',
                 group: create(:group, visibility_level: Gitlab::VisibilityLevel::PRIVATE))
        end

        before do
          setup_import_export_config('group')
          setup_reader(reader)

          expect(restored_project_json).to eq(true)
        end

        it_behaves_like 'restores project successfully',
          issues: 3,
          labels: 2,
          label_with_priorities: 'A project label',
          milestones: 2,
          first_issue_labels: 1

        it_behaves_like 'restores group correctly',
          labels: 0,
          milestones: 0,
          first_issue_labels: 1

        it 'restores issue states' do
          expect(project.issues.with_state(:closed).count).to eq(1)
          expect(project.issues.with_state(:opened).count).to eq(2)
        end
      end

      context 'with existing group models' do
        let!(:project) do
          create(:project,
                 :builds_disabled,
                 :issues_disabled,
                 name: 'project',
                 path: 'project',
                 group: create(:group))
        end

        before do
          setup_import_export_config('light')
          setup_reader(reader)
        end

        it 'does not import any templated services' do
          expect(restored_project_json).to eq(true)

          expect(project.services.where(template: true).count).to eq(0)
        end

        it 'does not import any instance services' do
          expect(restored_project_json).to eq(true)

          expect(project.services.where(instance: true).count).to eq(0)
        end

        it 'imports labels' do
          create(:group_label, name: 'Another label', group: project.group)

          expect_any_instance_of(Gitlab::ImportExport::Shared).not_to receive(:error)

          expect(restored_project_json).to eq(true)
          expect(project.labels.count).to eq(1)
        end

        it 'imports milestones' do
          create(:milestone, name: 'A milestone', group: project.group)

          expect_any_instance_of(Gitlab::ImportExport::Shared).not_to receive(:error)

          expect(restored_project_json).to eq(true)
          expect(project.group.milestones.count).to eq(1)
          expect(project.milestones.count).to eq(0)
        end
      end

      context 'with clashing milestones on IID' do
        let!(:project) do
          create(:project,
                 :builds_disabled,
                 :issues_disabled,
                 name: 'project',
                 path: 'project',
                 group: create(:group))
        end

        before do
          setup_import_export_config('milestone-iid')
          setup_reader(reader)
        end

        it 'preserves the project milestone IID' do
          expect_any_instance_of(Gitlab::ImportExport::Shared).not_to receive(:error)

          expect(restored_project_json).to eq(true)
          expect(project.milestones.count).to eq(2)
          expect(Milestone.find_by_title('Another milestone').iid).to eq(1)
          expect(Milestone.find_by_title('Group-level milestone').iid).to eq(2)
        end
      end

      context 'with external authorization classification labels' do
        before do
          setup_import_export_config('light')
          setup_reader(reader)
        end

        it 'converts empty external classification authorization labels to nil' do
          project.create_import_data(data: { override_params: { external_authorization_classification_label: "" } })

          expect(restored_project_json).to eq(true)
          expect(project.external_authorization_classification_label).to be_nil
        end

        it 'preserves valid external classification authorization labels' do
          project.create_import_data(data: { override_params: { external_authorization_classification_label: "foobar" } })

          expect(restored_project_json).to eq(true)
          expect(project.external_authorization_classification_label).to eq("foobar")
        end
      end
    end

    context 'Minimal JSON' do
      let(:project) { create(:project) }
      let(:user) { create(:user) }
      let(:tree_hash) { { 'visibility_level' => visibility } }
      let(:restorer) do
        described_class.new(user: user, shared: shared, project: project)
      end

      before do
        allow_any_instance_of(Gitlab::ImportExport::JSON::LegacyReader::File).to receive(:exist?).and_return(true)
        allow_any_instance_of(Gitlab::ImportExport::JSON::NdjsonReader).to receive(:exist?).and_return(false)
        allow_any_instance_of(Gitlab::ImportExport::JSON::LegacyReader::File).to receive(:tree_hash) { tree_hash }
      end

      context 'no group visibility' do
        let(:visibility) { Gitlab::VisibilityLevel::PRIVATE }

        it 'uses the project visibility' do
          expect(restorer.restore).to eq(true)
          expect(restorer.project.visibility_level).to eq(visibility)
        end
      end

      context 'with restricted internal visibility' do
        describe 'internal project' do
          let(:visibility) { Gitlab::VisibilityLevel::INTERNAL }

          it 'uses private visibility' do
            stub_application_setting(restricted_visibility_levels: [Gitlab::VisibilityLevel::INTERNAL])

            expect(restorer.restore).to eq(true)
            expect(restorer.project.visibility_level).to eq(Gitlab::VisibilityLevel::PRIVATE)
          end
        end
      end

      context 'with group visibility' do
        before do
          group = create(:group, visibility_level: group_visibility)

          project.update(group: group)
        end

        context 'private group visibility' do
          let(:group_visibility) { Gitlab::VisibilityLevel::PRIVATE }
          let(:visibility) { Gitlab::VisibilityLevel::PUBLIC }

          it 'uses the group visibility' do
            expect(restorer.restore).to eq(true)
            expect(restorer.project.visibility_level).to eq(group_visibility)
          end
        end

        context 'public group visibility' do
          let(:group_visibility) { Gitlab::VisibilityLevel::PUBLIC }
          let(:visibility) { Gitlab::VisibilityLevel::PRIVATE }

          it 'uses the project visibility' do
            expect(restorer.restore).to eq(true)
            expect(restorer.project.visibility_level).to eq(visibility)
          end
        end

        context 'internal group visibility' do
          let(:group_visibility) { Gitlab::VisibilityLevel::INTERNAL }
          let(:visibility) { Gitlab::VisibilityLevel::PUBLIC }

          it 'uses the group visibility' do
            expect(restorer.restore).to eq(true)
            expect(restorer.project.visibility_level).to eq(group_visibility)
          end

          context 'with restricted internal visibility' do
            it 'sets private visibility' do
              stub_application_setting(restricted_visibility_levels: [Gitlab::VisibilityLevel::INTERNAL])

              expect(restorer.restore).to eq(true)
              expect(restorer.project.visibility_level).to eq(Gitlab::VisibilityLevel::PRIVATE)
            end
          end
        end
      end

      context 'with project members' do
        let(:user) { create(:user, :admin) }
        let(:user2) { create(:user) }
        let(:project_members) do
          [
            {
              "id" => 2,
              "access_level" => 40,
              "source_type" => "Project",
              "notification_level" => 3,
              "user" => {
                "id" => user2.id,
                "email" => user2.email,
                "username" => 'test'
              }
            }
          ]
        end
        let(:tree_hash) { { 'project_members' => project_members } }

        before do
          project.add_maintainer(user)
        end

        it 'restores project members' do
          restorer.restore

          expect(project.members.map(&:user)).to contain_exactly(user, user2)
        end
      end
    end

    context 'JSON with invalid records' do
      subject(:restored_project_json) { project_tree_restorer.restore }

      let(:user) { create(:user) }
      let!(:project) { create(:project, :builds_disabled, :issues_disabled, name: 'project', path: 'project') }
      let(:project_tree_restorer) { described_class.new(user: user, shared: shared, project: project) }

      before do
        setup_import_export_config('with_invalid_records')
        setup_reader(reader)

        subject
      end

      context 'when failures occur because a relation fails to be processed' do
        it_behaves_like 'restores project successfully',
          issues: 0,
          labels: 0,
          label_with_priorities: nil,
          milestones: 1,
          first_issue_labels: 0,
          services: 0,
          import_failures: 1

        it 'records the failures in the database' do
          import_failure = ImportFailure.last

          expect(import_failure.project_id).to eq(project.id)
          expect(import_failure.relation_key).to eq('milestones')
          expect(import_failure.relation_index).to be_present
          expect(import_failure.exception_class).to eq('ActiveRecord::RecordInvalid')
          expect(import_failure.exception_message).to be_present
          expect(import_failure.correlation_id_value).not_to be_empty
          expect(import_failure.created_at).to be_present
        end
      end
    end

    context 'JSON with design management data' do
      let_it_be(:user) { create(:admin, email: 'user_1@gitlabexample.com') }
      let_it_be(:second_user) { create(:user, email: 'user_2@gitlabexample.com') }
      let_it_be(:project) do
        create(:project, :builds_disabled, :issues_disabled,
               { name: 'project', path: 'project' })
      end
      let(:shared) { project.import_export_shared }
      let(:project_tree_restorer) { described_class.new(user: user, shared: shared, project: project) }

      subject(:restored_project_json) { project_tree_restorer.restore }

      before do
        setup_import_export_config('designs')
        restored_project_json
      end

      it_behaves_like 'restores project successfully', issues: 2

      it 'restores project associations correctly' do
        expect(project.designs.size).to eq(7)
      end

      describe 'restores issue associations correctly' do
        let(:issue) { project.issues.offset(index).first }

        where(:index, :design_filenames, :version_shas, :events, :author_emails) do
          0 | %w[chirrido3.jpg jonathan_richman.jpg mariavontrap.jpeg] | %w[27702d08f5ee021ae938737f84e8fe7c38599e85 9358d1bac8ff300d3d2597adaa2572a20f7f8703 e1a4a501bcb42f291f84e5d04c8f927821542fb6] | %w[creation creation creation modification modification deletion] | %w[user_1@gitlabexample.com user_1@gitlabexample.com user_2@gitlabexample.com]
          1 | ['1 (1).jpeg', '2099743.jpg', 'a screenshot (1).jpg', 'chirrido3.jpg'] | %w[73f871b4c8c1d65c62c460635e023179fb53abc4 8587e78ab6bda3bc820a9f014c3be4a21ad4fcc8 c9b5f067f3e892122a4b12b0a25a8089192f3ac8] | %w[creation creation creation creation modification] | %w[user_1@gitlabexample.com user_2@gitlabexample.com user_2@gitlabexample.com]
        end

        with_them do
          it do
            expect(issue.designs.pluck(:filename)).to contain_exactly(*design_filenames)
            expect(issue.design_versions.pluck(:sha)).to contain_exactly(*version_shas)
            expect(issue.design_versions.flat_map(&:actions).map(&:event)).to contain_exactly(*events)
            expect(issue.design_versions.map(&:author).map(&:email)).to contain_exactly(*author_emails)
          end
        end
      end

      describe 'restores design version associations correctly' do
        let(:project_designs) { project.designs.reorder(:filename, :issue_id) }
        let(:design) { project_designs.offset(index).first }

        where(:index, :version_shas) do
          0 | %w[73f871b4c8c1d65c62c460635e023179fb53abc4 c9b5f067f3e892122a4b12b0a25a8089192f3ac8]
          1 | %w[73f871b4c8c1d65c62c460635e023179fb53abc4]
          2 | %w[c9b5f067f3e892122a4b12b0a25a8089192f3ac8]
          3 | %w[27702d08f5ee021ae938737f84e8fe7c38599e85 9358d1bac8ff300d3d2597adaa2572a20f7f8703 e1a4a501bcb42f291f84e5d04c8f927821542fb6]
          4 | %w[8587e78ab6bda3bc820a9f014c3be4a21ad4fcc8]
          5 | %w[27702d08f5ee021ae938737f84e8fe7c38599e85 e1a4a501bcb42f291f84e5d04c8f927821542fb6]
          6 | %w[27702d08f5ee021ae938737f84e8fe7c38599e85]
        end

        with_them do
          it do
            expect(design.versions.pluck(:sha)).to contain_exactly(*version_shas)
          end
        end
      end
    end
  end

  context 'enable ndjson import' do
    it_behaves_like 'project tree restorer work properly', :legacy_reader, true

    it_behaves_like 'project tree restorer work properly', :ndjson_reader, true
  end

  context 'disable ndjson import' do
    it_behaves_like 'project tree restorer work properly', :legacy_reader, false
  end
end
