# frozen_string_literal: true

require 'rspec-parameterized'
require 'gitlab-dangerfiles'
require 'danger'
require 'danger/plugins/helper'
require 'gitlab/dangerfiles/spec_helper'

require_relative '../../../danger/plugins/project_helper'

RSpec.describe Tooling::Danger::ProjectHelper do
  include_context "with dangerfile"

  let(:fake_danger) { DangerSpecHelper.fake_danger.include(described_class) }
  let(:fake_helper) { Danger::Helper.new(project_helper) }

  subject(:project_helper) { fake_danger.new(git: fake_git) }

  before do
    allow(project_helper).to receive(:helper).and_return(fake_helper)
  end

  describe '#changes' do
    it 'returns an array of Change objects' do
      expect(project_helper.changes).to all(be_an(Gitlab::Dangerfiles::Change))
    end

    it 'groups changes by change type' do
      changes = project_helper.changes

      expect(changes.added.files).to eq(added_files)
      expect(changes.modified.files).to eq(modified_files)
      expect(changes.deleted.files).to eq(deleted_files)
      expect(changes.renamed_before.files).to eq([renamed_before_file])
      expect(changes.renamed_after.files).to eq([renamed_after_file])
    end
  end

  describe '#categories_for_file' do
    using RSpec::Parameterized::TableSyntax

    before do
      allow(fake_git).to receive(:diff_for_file).with('usage_data.rb') { double(:diff, patch: "+ count(User.active)") }
    end

    where(:path, :expected_categories) do
      'usage_data.rb'   | [:database, :backend, :product_intelligence]
      'doc/foo.md'      | [:docs]
      'CONTRIBUTING.md' | [:docs]
      'LICENSE'         | [:docs]
      'MAINTENANCE.md'  | [:docs]
      'PHILOSOPHY.md'   | [:docs]
      'PROCESS.md'      | [:docs]
      'README.md'       | [:docs]

      'ee/doc/foo'      | [:unknown]
      'ee/README'       | [:unknown]

      'app/assets/foo'                   | [:frontend]
      'app/views/foo'                    | [:frontend]
      'public/foo'                       | [:frontend]
      'scripts/frontend/foo'             | [:frontend]
      'spec/frontend/bar'                | [:frontend]
      'spec/frontend_integration/bar'    | [:frontend]
      'vendor/assets/foo'                | [:frontend]
      'babel.config.js'                  | [:frontend]
      'jest.config.js'                   | [:frontend]
      'package.json'                     | [:frontend]
      'yarn.lock'                        | [:frontend]
      'config/foo.js'                    | [:frontend]
      'config/deep/foo.js'               | [:frontend]

      'ee/app/assets/foo'                | [:frontend]
      'ee/app/views/foo'                 | [:frontend]
      'ee/spec/frontend/bar'             | [:frontend]
      'ee/spec/frontend_integration/bar' | [:frontend]

      '.gitlab/ci/frontend.gitlab-ci.yml' | %i[frontend tooling]

      'app/models/foo'             | [:backend]
      'bin/foo'                    | [:backend]
      'config/foo'                 | [:backend]
      'lib/foo'                    | [:backend]
      'rubocop/foo'                | [:backend]
      '.rubocop.yml'               | [:backend]
      '.rubocop_todo.yml'          | [:backend]
      '.rubocop_manual_todo.yml'   | [:backend]
      'spec/foo'                   | [:backend]
      'spec/foo/bar'               | [:backend]

      'ee/app/foo'      | [:backend]
      'ee/bin/foo'      | [:backend]
      'ee/spec/foo'     | [:backend]
      'ee/spec/foo/bar' | [:backend]

      'spec/migrations/foo'    | [:database]
      'ee/spec/migrations/foo' | [:database]

      'spec/features/foo'                            | [:test]
      'ee/spec/features/foo'                         | [:test]
      'spec/support/shared_examples/features/foo'    | [:test]
      'ee/spec/support/shared_examples/features/foo' | [:test]
      'spec/support/shared_contexts/features/foo'    | [:test]
      'ee/spec/support/shared_contexts/features/foo' | [:test]
      'spec/support/helpers/features/foo'            | [:test]
      'ee/spec/support/helpers/features/foo'         | [:test]

      'generator_templates/foo' | [:backend]
      'vendor/languages.yml'    | [:backend]
      'file_hooks/examples/'    | [:backend]

      'Gemfile'        | [:backend]
      'Gemfile.lock'   | [:backend]
      'Rakefile'       | [:backend]
      'FOO_VERSION'    | [:backend]

      'Dangerfile'                                            | [:tooling]
      'danger/bundle_size/Dangerfile'                         | [:tooling]
      'ee/danger/bundle_size/Dangerfile'                      | [:tooling]
      'danger/bundle_size/'                                   | [:tooling]
      'ee/danger/bundle_size/'                                | [:tooling]
      '.gitlab-ci.yml'                                        | [:tooling]
      '.gitlab/ci/cng.gitlab-ci.yml'                          | [:tooling]
      '.gitlab/ci/ee-specific-checks.gitlab-ci.yml'           | [:tooling]
      'scripts/foo'                                           | [:tooling]
      'tooling/danger/foo'                                    | [:tooling]
      'ee/tooling/danger/foo'                                 | [:tooling]
      'lefthook.yml'                                          | [:tooling]
      '.editorconfig'                                         | [:tooling]
      'tooling/bin/find_foss_tests'                           | [:tooling]
      '.codeclimate.yml'                                      | [:tooling]
      '.gitlab/CODEOWNERS'                                    | [:tooling]

      'lib/gitlab/ci/templates/Security/SAST.gitlab-ci.yml'   | [:ci_template]
      'lib/gitlab/ci/templates/dotNET-Core.yml'               | [:ci_template]

      'ee/FOO_VERSION' | [:unknown]

      'db/schema.rb'                                              | [:database]
      'db/structure.sql'                                          | [:database]
      'db/migrate/foo'                                            | [:database, :migration]
      'db/post_migrate/foo'                                       | [:database, :migration]
      'ee/db/geo/migrate/foo'                                     | [:database, :migration]
      'ee/db/geo/post_migrate/foo'                                | [:database, :migration]
      'app/models/project_authorization.rb'                       | [:database, :backend]
      'app/services/users/refresh_authorized_projects_service.rb' | [:database, :backend]
      'app/services/authorized_project_update/find_records_due_for_refresh_service.rb' | [:database, :backend]
      'lib/gitlab/background_migration.rb'                        | [:database, :backend]
      'lib/gitlab/background_migration/foo'                       | [:database, :backend]
      'ee/lib/gitlab/background_migration/foo'                    | [:database, :backend]
      'lib/gitlab/database.rb'                                    | [:database, :backend]
      'lib/gitlab/database/foo'                                   | [:database, :backend]
      'ee/lib/gitlab/database/foo'                                | [:database, :backend]
      'lib/gitlab/github_import.rb'                               | [:database, :backend]
      'lib/gitlab/github_import/foo'                              | [:database, :backend]
      'lib/gitlab/sql/foo'                                        | [:database, :backend]
      'rubocop/cop/migration/foo'                                 | [:database]

      'db/fixtures/foo.rb'                                 | [:backend]
      'ee/db/fixtures/foo.rb'                              | [:backend]

      'qa/foo' | [:qa]
      'ee/qa/foo' | [:qa]

      'workhorse/main.go' | [:workhorse]
      'workhorse/internal/upload/upload.go' | [:workhorse]

      'locale/gitlab.pot' | [:none]

      'FOO'          | [:unknown]
      'foo'          | [:unknown]

      'foo/bar.rb'  | [:backend]
      'foo/bar.js'  | [:frontend]
      'foo/bar.txt' | [:none]
      'foo/bar.md'  | [:none]

      'ee/config/metrics/counts_7d/20210216174919_g_analytics_issues_weekly.yml' | [:product_intelligence]
      'lib/gitlab/usage_data_counters/aggregated_metrics/common.yml' | [:product_intelligence]
      'lib/gitlab/usage_data_counters/hll_redis_counter.rb' | [:backend, :product_intelligence]
      'lib/gitlab/tracking.rb' | [:backend, :product_intelligence]
      'spec/lib/gitlab/tracking_spec.rb' | [:backend, :product_intelligence]
      'app/helpers/tracking_helper.rb' | [:backend, :product_intelligence]
      'spec/helpers/tracking_helper_spec.rb' | [:backend, :product_intelligence]
      'lib/generators/rails/usage_metric_definition_generator.rb' | [:backend, :product_intelligence]
      'spec/lib/generators/usage_metric_definition_generator_spec.rb' | [:backend, :product_intelligence]
      'config/metrics/schema.json' | [:product_intelligence]
      'app/assets/javascripts/tracking/foo.js' | [:frontend, :product_intelligence]
      'spec/frontend/tracking/foo.js' | [:frontend, :product_intelligence]
      'spec/frontend/tracking_spec.js' | [:frontend, :product_intelligence]
      'lib/gitlab/usage_database/foo.rb' | [:backend]
    end

    with_them do
      subject { project_helper.categories_for_file(path) }

      it { is_expected.to eq(expected_categories) }
    end

    context 'having specific changes' do
      where(:expected_categories, :patch, :changed_files) do
        [:database, :backend, :product_intelligence] | '+ count(User.active)'                         | ['usage_data.rb', 'lib/gitlab/usage_data.rb', 'ee/lib/ee/gitlab/usage_data.rb']
        [:database, :backend, :product_intelligence] | '+ estimate_batch_distinct_count(User.active)' | ['usage_data.rb']
        [:backend, :product_intelligence]            | '+ alt_usage_data(User.active)'                | ['lib/gitlab/usage_data.rb']
        [:backend, :product_intelligence]            | '+ count(User.active)'                         | ['lib/gitlab/usage_data/topology.rb']
        [:backend, :product_intelligence]            | '+ foo_count(User.active)'                     | ['lib/gitlab/usage_data.rb']
        [:backend]                                   | '+ count(User.active)'                         | ['user.rb']
      end

      with_them do
        it 'has the correct categories' do
          changed_files.each do |file|
            allow(fake_git).to receive(:diff_for_file).with(file) { double(:diff, patch: patch) }

            expect(project_helper.categories_for_file(file)).to eq(expected_categories)
          end
        end
      end
    end
  end

  describe '.local_warning_message' do
    it 'returns an informational message with rules that can run' do
      expect(described_class.local_warning_message).to eq('==> Only the following Danger rules can be run locally: changelog, database, documentation, duplicate_yarn_dependencies, eslint, gitaly, pajamas, pipeline, prettier, product_intelligence, utility_css, vue_shared_documentation')
    end
  end

  describe '.success_message' do
    it 'returns an informational success message' do
      expect(described_class.success_message).to eq('==> No Danger rule violations!')
    end
  end

  describe '#rule_names' do
    context 'when running locally' do
      before do
        expect(fake_helper).to receive(:ci?).and_return(false)
      end

      it 'returns local only rules' do
        expect(project_helper.rule_names).to match_array(described_class::LOCAL_RULES)
      end
    end

    context 'when running under CI' do
      before do
        expect(fake_helper).to receive(:ci?).and_return(true)
      end

      it 'returns all rules' do
        expect(project_helper.rule_names).to eq(described_class::LOCAL_RULES | described_class::CI_ONLY_RULES)
      end
    end
  end

  describe '#all_ee_changes' do
    subject { project_helper.all_ee_changes }

    it 'returns all changed files starting with ee/' do
      changes = double
      expect(project_helper).to receive(:changes).and_return(changes)
      expect(changes).to receive(:files).and_return(%w[fr/ee/beer.rb ee/wine.rb ee/lib/ido.rb ee.k])

      is_expected.to match_array(%w[ee/wine.rb ee/lib/ido.rb])
    end
  end

  describe '#project_name' do
    subject { project_helper.project_name }

    it 'returns gitlab if ee? returns true' do
      expect(project_helper).to receive(:ee?) { true }

      is_expected.to eq('gitlab')
    end

    it 'returns gitlab-ce if ee? returns false' do
      expect(project_helper).to receive(:ee?) { false }

      is_expected.to eq('gitlab-foss')
    end
  end

  describe '#file_lines' do
    let(:filename) { 'spec/foo_spec.rb' }
    let(:file_spy) { spy }

    it 'returns the chomped file lines' do
      expect(project_helper).to receive(:read_file).with(filename).and_return(file_spy)

      project_helper.file_lines(filename)

      expect(file_spy).to have_received(:lines).with(chomp: true)
    end
  end
end