# frozen_string_literal: true

require 'spec_helper'

RSpec.describe ServicePing::SubmitService, feature_category: :service_ping do
  include StubRequests
  include UsageDataHelpers

  let(:usage_data_id) { 31643 }
  let(:score_params) do
    {
      score: {
        leader_issues: 10.2,
        instance_issues: 3.2,
        percentage_issues: 31.37,

        leader_notes: 25.3,
        instance_notes: 23.2,

        leader_milestones: 16.2,
        instance_milestones: 5.5,

        leader_boards: 5.2,
        instance_boards: 3.2,

        leader_merge_requests: 5.2,
        instance_merge_requests: 3.2,

        leader_ci_pipelines: 25.1,
        instance_ci_pipelines: 21.3,

        leader_environments: 3.3,
        instance_environments: 2.2,

        leader_deployments: 41.3,
        instance_deployments: 15.2,

        leader_service_desk_issues: 15.8,
        instance_service_desk_issues: 15.1,

        usage_data_id: usage_data_id,

        non_existing_column: 'value'
      }
    }
  end

  let(:with_dev_ops_score_params) { { dev_ops_score: score_params[:score] } }
  let(:with_conv_index_params) { { conv_index: score_params[:score] } }
  let(:with_usage_data_id_params) { { conv_index: { usage_data_id: usage_data_id } } }
  let(:service_ping_payload_url) { File.join(described_class::STAGING_BASE_URL, described_class::USAGE_DATA_PATH) }
  let(:service_ping_errors_url) { File.join(described_class::STAGING_BASE_URL, described_class::ERROR_PATH) }
  let(:service_ping_metadata_url) { File.join(described_class::STAGING_BASE_URL, described_class::METADATA_PATH) }
  let!(:usage_data) { { uuid: 'uuid', unique_instance_id: 'unique_instance_id', recorded_at: Time.current } }

  let!(:organization) { create(:organization) }

  subject(:submit_service) { described_class.new(organization: organization, payload: usage_data) }

  shared_examples 'does not run' do
    it 'does not call gitlab api' do
      expect(Gitlab::HTTP).not_to receive(:post)

      submit_service.execute
    end
  end

  shared_examples 'does not send a blank usage ping payload' do
    it 'does not call gitlab api' do
      expect(Gitlab::HTTP).not_to receive(:post).with(service_ping_payload_url, any_args)

      expect { submit_service.execute }.to raise_error(described_class::SubmissionError) do |error|
        expect(error.message).to include('Usage data payload is blank')
      end
    end
  end

  shared_examples 'saves DevOps report data from the response' do
    it 'changes metric count' do
      expect { submit_service.execute }
        .to change { DevOpsReport::Metric.count }
        .by(1)

      expect(DevOpsReport::Metric.last.leader_issues).to eq 10.2
      expect(DevOpsReport::Metric.last.instance_issues).to eq 3.2
      expect(DevOpsReport::Metric.last.percentage_issues).to eq 31.37
    end
  end

  context 'when usage ping is disabled' do
    before do
      stub_application_setting(usage_ping_enabled: false)
    end

    it_behaves_like 'does not run'
  end

  context 'when usage ping is disabled from GitLab config file' do
    before do
      stub_config_setting(usage_ping_enabled: false)
    end

    it_behaves_like 'does not run'
  end

  context 'when enabled_and_consented is false' do
    before do
      allow(ServicePing::ServicePingSettings).to receive(:enabled_and_consented?).and_return(false)
    end

    it_behaves_like 'does not run'
  end

  context 'when enabled_and_consented is true' do
    before do
      stub_usage_data_connections
      stub_database_flavor_check

      allow(ServicePing::ServicePingSettings).to receive(:enabled_and_consented?).and_return(true)
    end

    it 'submits a service ping payload without errors', :aggregate_failures do
      response = stub_response(body: with_dev_ops_score_params)
      error_response = stub_response(body: nil, url: service_ping_errors_url, status: 201)
      metadata_response = stub_response(body: nil, url: service_ping_metadata_url, status: 201)

      expect(Gitlab::HTTP).to receive(:post)
      .with(
        anything,
        hash_including(
          headers: {
            'Content-type' => 'application/json',
            'Accept' => 'application/json'
          }
        )
      ).twice
      .and_call_original

      submit_service.execute

      expect(response).to have_been_requested
      expect(error_response).not_to have_been_requested
      expect(metadata_response).to have_been_requested
    end
  end

  context 'when usage ping is enabled' do
    before do
      stub_usage_data_connections
      stub_database_flavor_check
      stub_application_setting(usage_ping_enabled: true)
      stub_response(body: nil, url: service_ping_errors_url, status: 201)
      stub_response(body: nil, url: service_ping_metadata_url, status: 201)
    end

    context 'and user requires usage stats consent' do
      before do
        allow(User).to receive(:single_user)
          .and_return(instance_double(User, :user, requires_usage_stats_consent?: true))
      end

      it_behaves_like 'does not run'
    end

    it 'sends a POST request' do
      stub_response(body: nil, url: service_ping_metadata_url, status: 201)
      response = stub_response(body: with_dev_ops_score_params)

      submit_service.execute

      expect(response).to have_been_requested
    end

    context 'when conv_index data is passed' do
      let(:usage_data) { { uuid: 'uuid', recorded_at: Time.current } }

      before do
        stub_response(body: with_conv_index_params)
      end

      it_behaves_like 'saves DevOps report data from the response'

      it 'saves usage_data_id to version_usage_data_id_value' do
        submit_service.execute

        raw_usage_data = RawUsageData.find_by(recorded_at: usage_data[:recorded_at])

        expect(raw_usage_data.version_usage_data_id_value).to eq(31643)
      end
    end

    context 'when only usage_data_id is passed in response' do
      let(:usage_data) { { uuid: 'uuid', recorded_at: Time.current } }

      before do
        stub_response(body: with_usage_data_id_params)
      end

      it 'does not save DevOps report data' do
        expect { submit_service.execute }.not_to change { DevOpsReport::Metric.count }
      end

      it 'saves usage_data_id to version_usage_data_id_value' do
        submit_service.execute

        raw_usage_data = RawUsageData.find_by(recorded_at: usage_data[:recorded_at])

        expect(raw_usage_data.version_usage_data_id_value).to eq(31643)
      end
    end

    context 'when version app usage_data_id is invalid' do
      let(:usage_data_id) { -1000 }

      before do
        stub_response(body: with_conv_index_params)
      end

      it 'raises an exception' do
        expect { submit_service.execute }.to raise_error(described_class::SubmissionError) do |error|
          expect(error.message).to include('Invalid usage_data_id in response: -1000')
        end
      end
    end

    context 'when DevOps report data is passed' do
      before do
        stub_response(body: with_dev_ops_score_params)
      end

      it_behaves_like 'saves DevOps report data from the response'
    end

    context 'with saving raw_usage_data' do
      let(:usage_data) { { uuid: 'uuid', recorded_at: Time.current } }

      before do
        stub_response(body: with_dev_ops_score_params)
      end

      it 'creates a raw_usage_data record' do
        expect { submit_service.execute }.to change { RawUsageData.count }.by(1)
      end

      it 'saves the correct payload' do
        submit_service.execute

        raw_usage_data = RawUsageData.find_by(recorded_at: usage_data[:recorded_at])

        expect(raw_usage_data.payload.to_json).to eq(usage_data.to_json)
      end

      it 'links to the first found organization' do
        submit_service.execute

        raw_usage_data = RawUsageData.find_by(recorded_at: usage_data[:recorded_at])

        expect(raw_usage_data.organization_id).to eq(organization.id)
      end
    end

    context 'and usage ping response has unsuccessful status' do
      before do
        stub_response(body: nil, status: 504)
      end

      it 'raises an exception' do
        expect { submit_service.execute }.to raise_error(described_class::SubmissionError) do |error|
          expect(error.message).to include('Unsuccessful response code: 504')
        end
      end
    end

    context 'and usage data is empty string' do
      let(:usage_data) { {} }

      it_behaves_like 'does not send a blank usage ping payload'
    end

    context 'and usage data is nil' do
      let(:usage_data) { nil }

      it_behaves_like 'does not send a blank usage ping payload'
    end

    context 'if version app response fails' do
      before do
        stub_response(body: with_dev_ops_score_params, status: 404)
      end

      it 'raises SubmissionError' do
        # SubmissionError is raised as a result of 404 in response from HTTP Request
        expect { submit_service.execute }.to raise_error(described_class::SubmissionError)
      end
    end
  end

  context 'with metadata reporting' do
    before do
      stub_usage_data_connections
      stub_database_flavor_check
      stub_application_setting(usage_ping_enabled: true)
      stub_response(body: with_conv_index_params)
    end

    let(:metric_double) do
      instance_double(Gitlab::Usage::ServicePing::LegacyMetricMetadataDecorator, duration: 123, error: nil)
    end

    let(:metric_double_with_error) do
      instance_double(Gitlab::Usage::ServicePing::LegacyMetricMetadataDecorator, duration: 123, error: 'Error')
    end

    let(:usage_data) do
      {
        uuid: 'uuid',
        unique_instance_id: 'unique_instance_id',
        metric_a: metric_double,
        metric_group: {
          metric_b: metric_double_with_error
        },
        metric_without_timing: "value",
        recorded_at: Time.current
      }
    end

    let(:metadata_payload) do
      {
        metadata: {
          uuid: 'uuid',
          unique_instance_id: 'unique_instance_id',
          metrics: [
            { name: 'metric_a', time_elapsed: 123 },
            { name: 'metric_group.metric_b', time_elapsed: 123, error: 'Error' }
          ]
        }
      }
    end

    it 'submits metadata' do
      response = stub_full_request(service_ping_metadata_url, method: :post)
                   .with(body: metadata_payload)

      submit_service.execute

      expect(response).to have_been_requested
    end
  end

  def stub_response(body:, url: service_ping_payload_url, status: 201)
    stub_full_request(url, method: :post)
      .to_return(
        headers: { 'Content-Type' => 'application/json' },
        body: body.to_json,
        status: status
      )
  end
end
