# frozen_string_literal: true

require 'spec_helper'

RSpec.describe API::Lint do
  describe 'POST /ci/lint' do
    context 'when signup settings are disabled' do
      before do
        Gitlab::CurrentSettings.signup_enabled = false
      end

      context 'when unauthenticated' do
        it 'returns authentication error' do
          post api('/ci/lint'), params: { content: 'content' }

          expect(response).to have_gitlab_http_status(:unauthorized)
        end
      end

      context 'when authenticated' do
        let_it_be(:api_user) { create(:user) }

        it 'returns authorized' do
          post api('/ci/lint', api_user), params: { content: 'content' }

          expect(response).to have_gitlab_http_status(:ok)
        end
      end

      context 'when authenticated as external user' do
        let(:project) { create(:project) }
        let(:api_user) { create(:user, :external) }

        context 'when reporter in a project' do
          before do
            project.add_reporter(api_user)
          end

          it 'returns authorization failure' do
            post api('/ci/lint', api_user), params: { content: 'content' }

            expect(response).to have_gitlab_http_status(:unauthorized)
          end
        end

        context 'when developer in a project' do
          before do
            project.add_developer(api_user)
          end

          it 'returns authorization success' do
            post api('/ci/lint', api_user), params: { content: 'content' }

            expect(response).to have_gitlab_http_status(:ok)
          end
        end
      end
    end

    context 'when signup is enabled and not limited' do
      before do
        Gitlab::CurrentSettings.signup_enabled = true
        stub_application_setting(domain_allowlist: [], email_restrictions_enabled: false, require_admin_approval_after_user_signup: false)
      end

      context 'when unauthenticated' do
        it 'returns authorized success' do
          post api('/ci/lint'), params: { content: 'content' }

          expect(response).to have_gitlab_http_status(:ok)
        end
      end

      context 'when authenticated' do
        let_it_be(:api_user) { create(:user) }

        it 'returns authentication success' do
          post api('/ci/lint', api_user), params: { content: 'content' }

          expect(response).to have_gitlab_http_status(:ok)
        end
      end
    end

    context 'when limited signup is enabled' do
      before do
        stub_application_setting(domain_allowlist: ['www.gitlab.com'])
        Gitlab::CurrentSettings.signup_enabled = true
      end

      context 'when unauthenticated' do
        it 'returns unauthorized' do
          post api('/ci/lint'), params: { content: 'content' }

          expect(response).to have_gitlab_http_status(:unauthorized)
        end
      end

      context 'when authenticated' do
        let_it_be(:api_user) { create(:user) }

        it 'returns authentication success' do
          post api('/ci/lint', api_user), params: { content: 'content' }

          expect(response).to have_gitlab_http_status(:ok)
        end
      end
    end

    context 'when authenticated' do
      let_it_be(:api_user) { create(:user) }

      context 'with valid .gitlab-ci.yaml content' do
        let(:yaml_content) do
          File.read(Rails.root.join('spec/support/gitlab_stubs/gitlab_ci.yml'))
        end

        it 'passes validation without warnings or errors' do
          post api('/ci/lint', api_user), params: { content: yaml_content }

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response).to be_an Hash
          expect(json_response['status']).to eq('valid')
          expect(json_response['warnings']).to eq([])
          expect(json_response['errors']).to eq([])
        end

        it 'outputs expanded yaml content' do
          post api('/ci/lint', api_user), params: { content: yaml_content, include_merged_yaml: true }

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response).to have_key('merged_yaml')
        end
      end

      context 'with valid .gitlab-ci.yaml with warnings' do
        let(:yaml_content) { { job: { script: 'ls', rules: [{ when: 'always' }] } }.to_yaml }

        it 'passes validation but returns warnings' do
          post api('/ci/lint', api_user), params: { content: yaml_content }

          expect(response).to have_gitlab_http_status(:ok)
          expect(json_response['status']).to eq('valid')
          expect(json_response['warnings']).not_to be_empty
          expect(json_response['errors']).to eq([])
        end
      end

      context 'with an invalid .gitlab_ci.yml' do
        context 'with invalid syntax' do
          let(:yaml_content) { 'invalid content' }

          it 'responds with errors about invalid syntax' do
            post api('/ci/lint', api_user), params: { content: yaml_content }

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['status']).to eq('invalid')
            expect(json_response['warnings']).to eq([])
            expect(json_response['errors']).to eq(['Invalid configuration format'])
          end

          it 'outputs expanded yaml content' do
            post api('/ci/lint', api_user), params: { content: yaml_content, include_merged_yaml: true }

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response).to have_key('merged_yaml')
          end
        end

        context 'with invalid configuration' do
          let(:yaml_content) { '{ image: "ruby:2.7",  services: ["postgres"] }' }

          it 'responds with errors about invalid configuration' do
            post api('/ci/lint', api_user), params: { content: yaml_content }

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['status']).to eq('invalid')
            expect(json_response['warnings']).to eq([])
            expect(json_response['errors']).to eq(['jobs config should contain at least one visible job'])
          end

          it 'outputs expanded yaml content' do
            post api('/ci/lint', api_user), params: { content: yaml_content, include_merged_yaml: true }

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response).to have_key('merged_yaml')
          end
        end
      end

      context 'without the content parameter' do
        it 'responds with validation error about missing content' do
          post api('/ci/lint', api_user)

          expect(response).to have_gitlab_http_status(:bad_request)
          expect(json_response['error']).to eq('content is missing')
        end
      end
    end
  end

  describe 'GET /projects/:id/ci/lint' do
    subject(:ci_lint) { get api("/projects/#{project.id}/ci/lint", api_user), params: { dry_run: dry_run } }

    let(:project) { create(:project, :repository) }
    let(:dry_run) { nil }

    RSpec.shared_examples 'valid config with warnings' do
      it 'passes validation with warnings' do
        ci_lint

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['valid']).to eq(true)
        expect(json_response['errors']).to eq([])
        expect(json_response['warnings']).not_to be_empty
      end
    end

    RSpec.shared_examples 'valid config without warnings' do
      it 'passes validation' do
        ci_lint

        included_config = YAML.safe_load(included_content, [Symbol])
        root_config = YAML.safe_load(yaml_content, [Symbol])
        expected_yaml = included_config.merge(root_config).except(:include).deep_stringify_keys.to_yaml

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response).to be_an Hash
        expect(json_response['merged_yaml']).to eq(expected_yaml)
        expect(json_response['valid']).to eq(true)
        expect(json_response['warnings']).to eq([])
        expect(json_response['errors']).to eq([])
      end
    end

    RSpec.shared_examples 'invalid config' do
      it 'responds with errors about invalid configuration' do
        ci_lint

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['merged_yaml']).to eq(yaml_content)
        expect(json_response['valid']).to eq(false)
        expect(json_response['warnings']).to eq([])
        expect(json_response['errors']).to eq(['jobs config should contain at least one visible job'])
      end
    end

    context 'when unauthenticated' do
      let_it_be(:api_user) { nil }

      it 'returns authentication error' do
        ci_lint

        expect(response).to have_gitlab_http_status(:not_found)
      end
    end

    context 'when authenticated as non-member' do
      let_it_be(:api_user) { create(:user) }

      let(:yaml_content) do
        { include: { local: 'another-gitlab-ci.yml' }, test: { stage: 'test', script: 'echo 1' } }.to_yaml
      end

      context 'when project is private' do
        before do
          project.update!(visibility_level: Gitlab::VisibilityLevel::PRIVATE)
          stub_ci_pipeline_yaml_file(yaml_content)
        end

        it 'returns authentication error' do
          ci_lint

          expect(response).to have_gitlab_http_status(:not_found)
        end
      end

      context 'when project is public' do
        before do
          project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
        end

        context 'when running as dry run' do
          let(:dry_run) { true }

          before do
            stub_ci_pipeline_yaml_file(yaml_content)
          end

          it 'returns pipeline creation error' do
            ci_lint

            expect(response).to have_gitlab_http_status(:ok)
            expect(json_response['merged_yaml']).to eq(nil)
            expect(json_response['valid']).to eq(false)
            expect(json_response['warnings']).to eq([])
            expect(json_response['errors']).to eq(['Insufficient permissions to create a new pipeline'])
          end
        end

        context 'when running static validation' do
          let(:dry_run) { false }

          let(:included_content) do
            { another_test: { stage: 'test', script: 'echo 1' } }.deep_stringify_keys.to_yaml
          end

          before do
            project.repository.create_file(
              project.creator,
              '.gitlab-ci.yml',
              yaml_content,
              message: 'Automatically created .gitlab-ci.yml',
              branch_name: 'master'
            )

            project.repository.create_file(
              project.creator,
              'another-gitlab-ci.yml',
              included_content,
              message: 'Automatically created another-gitlab-ci.yml',
              branch_name: 'master'
            )
          end

          it_behaves_like 'valid config without warnings'
        end
      end
    end

    context 'when authenticated as project guest' do
      let_it_be(:api_user) { create(:user) }

      before do
        project.add_guest(api_user)
      end

      it 'returns authentication error' do
        ci_lint

        expect(response).to have_gitlab_http_status(:forbidden)
      end
    end

    context 'when authenticated as project developer' do
      let_it_be(:api_user) { create(:user) }

      before do
        project.add_developer(api_user)
      end

      context 'with valid .gitlab-ci.yml content' do
        let(:yaml_content) do
          { include: { local: 'another-gitlab-ci.yml' }, test: { stage: 'test', script: 'echo 1' } }.to_yaml
        end

        let(:included_content) do
          { another_test: { stage: 'test', script: 'echo 1' } }.deep_stringify_keys.to_yaml
        end

        before do
          project.repository.create_file(
            project.creator,
            '.gitlab-ci.yml',
            yaml_content,
            message: 'Automatically created .gitlab-ci.yml',
            branch_name: 'master'
          )

          project.repository.create_file(
            project.creator,
            'another-gitlab-ci.yml',
            included_content,
            message: 'Automatically created another-gitlab-ci.yml',
            branch_name: 'master'
          )
        end

        context 'when running as dry run' do
          let(:dry_run) { true }

          it_behaves_like 'valid config without warnings'
        end

        context 'when running static validation' do
          let(:dry_run) { false }

          it_behaves_like 'valid config without warnings'
        end

        context 'With warnings' do
          let(:yaml_content) { { job: { script: 'ls', rules: [{ when: 'always' }] } }.to_yaml }

          it_behaves_like 'valid config with warnings'
        end
      end

      context 'with invalid .gitlab-ci.yml content' do
        let(:yaml_content) do
          { image: 'ruby:2.7', services: ['postgres'] }.deep_stringify_keys.to_yaml
        end

        before do
          stub_ci_pipeline_yaml_file(yaml_content)
        end

        context 'when running as dry run' do
          let(:dry_run) { true }

          it_behaves_like 'invalid config'
        end

        context 'when running static validation' do
          let(:dry_run) { false }

          it_behaves_like 'invalid config'
        end
      end
    end
  end

  describe 'POST /projects/:id/ci/lint' do
    subject(:ci_lint) { post api("/projects/#{project.id}/ci/lint", api_user), params: { dry_run: dry_run, content: yaml_content } }

    let(:project) { create(:project, :repository) }
    let(:dry_run) { nil }

    let_it_be(:api_user) { create(:user) }

    let_it_be(:yaml_content) do
      { include: { local: 'another-gitlab-ci.yml' }, test: { stage: 'test', script: 'echo 1' } }.to_yaml
    end

    let_it_be(:included_content) do
      { another_test: { stage: 'test', script: 'echo 1' } }.to_yaml
    end

    RSpec.shared_examples 'valid project config' do
      it 'passes validation' do
        ci_lint

        included_config = YAML.safe_load(included_content, [Symbol])
        root_config = YAML.safe_load(yaml_content, [Symbol])
        expected_yaml = included_config.merge(root_config).except(:include).deep_stringify_keys.to_yaml

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response).to be_an Hash
        expect(json_response['merged_yaml']).to eq(expected_yaml)
        expect(json_response['valid']).to eq(true)
        expect(json_response['errors']).to eq([])
      end
    end

    RSpec.shared_examples 'invalid project config' do
      it 'responds with errors about invalid configuration' do
        ci_lint

        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['merged_yaml']).to eq(yaml_content)
        expect(json_response['valid']).to eq(false)
        expect(json_response['errors']).to eq(['jobs config should contain at least one visible job'])
      end
    end

    context 'with an empty repository' do
      let_it_be(:empty_project) { create(:project_empty_repo) }
      let_it_be(:yaml_content) do
        File.read(Rails.root.join('spec/support/gitlab_stubs/gitlab_ci.yml'))
      end

      before do
        empty_project.add_developer(api_user)
      end

      it 'passes validation without errors' do
        post api("/projects/#{empty_project.id}/ci/lint", api_user), params: { content: yaml_content }
        expect(response).to have_gitlab_http_status(:ok)
        expect(json_response['valid']).to eq(true)
        expect(json_response['errors']).to eq([])
      end
    end

    context 'when unauthenticated' do
      let_it_be(:api_user) { nil }

      it 'returns authentication error' do
        ci_lint

        expect(response).to have_gitlab_http_status(:not_found)
      end

      context 'when project is public' do
        before do
          project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
        end

        it 'returns authentication error' do
          ci_lint

          expect(response).to have_gitlab_http_status(:forbidden)
        end
      end
    end

    context 'when authenticated as non-member' do
      context 'when project is private' do
        before do
          project.update!(visibility_level: Gitlab::VisibilityLevel::PRIVATE)
        end

        it 'returns authentication error' do
          ci_lint

          expect(response).to have_gitlab_http_status(:not_found)
        end
      end

      context 'when project is public' do
        before do
          project.update!(visibility_level: Gitlab::VisibilityLevel::PUBLIC)
        end

        context 'when running as dry run' do
          let(:dry_run) { true }

          it 'returns authentication error' do
            ci_lint

            expect(response).to have_gitlab_http_status(:forbidden)
          end
        end

        context 'when running static validation' do
          let(:dry_run) { false }

          before do
            project.repository.create_file(
              project.creator,
              'another-gitlab-ci.yml',
              included_content,
              message: 'Automatically created another-gitlab-ci.yml',
              branch_name: 'master'
            )
          end

          it 'returns authentication error' do
            ci_lint

            expect(response).to have_gitlab_http_status(:forbidden)
          end
        end
      end
    end

    context 'when authenticated as project guest' do
      before do
        project.add_guest(api_user)
      end

      it 'returns authentication error' do
        ci_lint

        expect(response).to have_gitlab_http_status(:forbidden)
      end
    end

    context 'when authenticated as project developer' do
      before do
        project.add_developer(api_user)
      end

      context 'with valid .gitlab-ci.yml content' do
        before do
          project.repository.create_file(
            project.creator,
            'another-gitlab-ci.yml',
            included_content,
            message: 'Automatically created another-gitlab-ci.yml',
            branch_name: 'master'
          )
        end

        context 'when running as dry run' do
          let(:dry_run) { true }

          it_behaves_like 'valid project config'
        end

        context 'when running static validation' do
          let(:dry_run) { false }

          it_behaves_like 'valid project config'
        end
      end

      context 'with invalid .gitlab-ci.yml content' do
        let(:yaml_content) do
          { image: 'ruby:2.7', services: ['postgres'] }.deep_stringify_keys.to_yaml
        end

        context 'when running as dry run' do
          let(:dry_run) { true }

          it_behaves_like 'invalid project config'
        end

        context 'when running static validation' do
          let(:dry_run) { false }

          it_behaves_like 'invalid project config'
        end
      end
    end
  end
end