describe KnapsackPro::Report do
  describe '.save' do
    subject { described_class.save }

    it do
      test_files = [double]
      tracker = instance_double(KnapsackPro::Tracker, to_a: test_files)
      expect(KnapsackPro).to receive(:tracker).and_return(tracker)
      expect(described_class).to receive(:create_build_subset).with(test_files)

      subject
    end
  end

  describe '.save_subset_queue_to_file' do
    let(:fake_path) { SecureRandom.uuid }

    subject { described_class.save_subset_queue_to_file }

    before do
      test_files = [{path: fake_path}]
      tracker = instance_double(KnapsackPro::Tracker, to_a: test_files)
      expect(KnapsackPro).to receive(:tracker).and_return(tracker)

      subset_queue_id = 'fake-subset-queue-id'
      expect(KnapsackPro::Config::Env).to receive(:subset_queue_id).and_return(subset_queue_id)

      queue_id = 'fake-queue-id'
      expect(KnapsackPro::Config::Env).to receive(:queue_id).twice.and_return(queue_id)
    end

    it do
      subject

      expect(
        JSON.parse(
          File.read('tmp/knapsack_pro/queue/fake-queue-id/fake-subset-queue-id.json')
        )
      ).to eq([
        { 'path' => fake_path }
      ])
    end
  end

  describe '.save_node_queue_to_api' do
    let(:json_test_file_a_path) { double }
    let(:json_test_file_a) { [{ 'path' => 'a_spec.rb' }] }

    let(:json_test_file_b_path) { double }
    let(:json_test_file_b) { [{ 'path' => 'b_spec.rb' }] }

    subject { described_class.save_node_queue_to_api }

    before do
      queue_id = 'fake-queue-id'
      expect(KnapsackPro::Config::Env).to receive(:queue_id).and_return(queue_id)

      expect(Dir).to receive(:glob).with('tmp/knapsack_pro/queue/fake-queue-id/*.json').and_return([
        json_test_file_a_path,
        json_test_file_b_path
      ])

      expect(File).to receive(:read).with(json_test_file_a_path).and_return(json_test_file_a.to_json)
      expect(File).to receive(:read).with(json_test_file_b_path).and_return(json_test_file_b.to_json)
    end

    it do
      expect(described_class).to receive(:create_build_subset).with(
        json_test_file_a + json_test_file_b
      )

      subject
    end
  end

  describe '.create_build_subset' do
    subject { described_class.create_build_subset(test_files) }

    before do
      commit_hash = double
      branch = double
      repository_adapter = instance_double(KnapsackPro::RepositoryAdapters::EnvAdapter, commit_hash: commit_hash, branch: branch)
      expect(KnapsackPro::RepositoryAdapterInitiator).to receive(:call).and_return(repository_adapter)

      unsymbolize_test_files = double
      expect(KnapsackPro::Utils).to receive(:unsymbolize).with(test_files).and_return(unsymbolize_test_files)

      encrypted_test_files = double
      expect(KnapsackPro::Crypto::Encryptor).to receive(:call).with(unsymbolize_test_files).and_return(encrypted_test_files)

      encrypted_branch = double
      expect(KnapsackPro::Crypto::BranchEncryptor).to receive(:call).with(repository_adapter.branch).and_return(encrypted_branch)

      node_total = double
      node_index = double
      expect(KnapsackPro::Config::Env).to receive(:ci_node_total).and_return(node_total)
      expect(KnapsackPro::Config::Env).to receive(:ci_node_index).and_return(node_index)

      action = double
      expect(KnapsackPro::Client::API::V1::BuildSubsets).to receive(:create).with({
        commit_hash: commit_hash,
        branch: encrypted_branch,
        node_total: node_total,
        node_index: node_index,
        test_files: encrypted_test_files,
      }).and_return(action)

      connection = instance_double(KnapsackPro::Client::Connection, success?: success?, errors?: errors?)
      expect(KnapsackPro::Client::Connection).to receive(:new).with(action).and_return(connection).and_return(connection)

      response = double
      expect(connection).to receive(:call).and_return(response)
    end

    shared_examples_for 'create_build_subset method' do
      context 'when success' do
        let(:success?) { true }

        context 'when response has errors' do
          let(:errors?) { true }

          it do
            expect {
              subject
            }.to raise_error(ArgumentError)
          end
        end

        context 'when response has no errors' do
          let(:errors?) { false }

          it do
            logger = instance_double(Logger)
            expect(KnapsackPro).to receive(:logger).and_return(logger)
            expect(logger).to receive(:debug).with('Saved time execution report on API server.')
            subject
          end
        end
      end

      context 'when failure' do
        let(:success?) { false }
        let(:errors?) { nil }

        it { subject }
      end
    end

    context "when test files doesn't exist" do
      let(:test_files) { [] }

      it_behaves_like 'create_build_subset method'
    end

    context 'when test files exists' do
      let(:test_files) { [double] }

      it_behaves_like 'create_build_subset method'
    end
  end
end