# frozen_string_literal: true

RSpec.describe GDK::Diagnostic::Praefect do
  include ShelloutHelper

  describe '#success?' do
    context 'focusing on checking DB migrations' do
      before do
        allow(subject).to receive(:dir_length_ok?).and_return(true)
      end

      context 'when there are DB migrations that need attention' do
        it 'returns false' do
          stub_unmigrated_migration

          expect(subject.success?).to be_falsey
        end
      end

      context 'when there are no DB migrations that need attention' do
        it 'returns true' do
          stub_migrated_migration

          expect(subject.success?).to be_truthy
        end
      end
    end
  end

  describe '#detail' do
    context 'focusing on checking DB migrations' do
      before do
        allow(subject).to receive(:dir_length_ok?).and_return(true)
      end

      context 'when there are DB migrations that need attention' do
        it 'returns detail content' do
          stub_unmigrated_migration

          expect(subject.detail).to match(/The following praefect DB migrations don't appear to have been applied/)
        end
      end

      context 'when there are no DB migrations that need attention' do
        it 'returns nil' do
          stub_migrated_migration

          expect(subject.detail).to be_nil
        end
      end
    end
  end

  def stub_unmigrated_migration
    stub_db_migrations('20210525173505_valid_primaries_view', 'no')
  end

  def stub_migrated_migration
    stub_db_migrations('20210525173505_valid_primaries_view', '2021-07-12 17:03:00.155292 +1000 AEST')
  end

  def stub_db_migrations(migration, status)
    line = "| #{migration} | #{status} |"

    command = '/home/git/gdk/gitaly/_build/bin/praefect -config /home/git/gdk/gitaly/praefect.config.toml sql-migrate-status'
    shellout_double = gdk_shellout_double(readlines: [line])
    allow_gdk_shellout_command(command).and_return(shellout_double)
  end
end