module PDK
  module CLI
    @test_unit_cmd = @test_cmd.define_command do
      name 'unit'
      usage 'unit [options]'
      summary 'Run unit tests.'

      PDK::CLI.puppet_version_options(self)
      PDK::CLI.puppet_dev_option(self)
      flag nil, :list, 'List all available unit test files.'
      flag nil, :parallel, 'Run unit tests in parallel.'
      flag :v, :verbose, 'More verbose --list output. Displays a list of examples in each unit test file.'
      flag :c, 'clean-fixtures', 'Clean up downloaded fixtures after the test run.'

      option nil, :tests, 'Specify a comma-separated list of unit test files to run.', argument: :required, default: '' do |values|
        require 'pdk/cli/util/option_validator'
        PDK::CLI::Util::OptionValidator.comma_separated_list?(values)
      end

      # TODO
      # option nil, :runner_options, "options to pass through to the actual test-runner", argument: :required

      run do |opts, _args, _cmd|
        require 'pdk/tests/unit'
        require 'pdk/report'
        require 'pdk/util/bundler'

        PDK::CLI::Util.validate_puppet_version_opts(opts)

        PDK::CLI::Util.ensure_in_module!(
          message: 'Unit tests can only be run from inside a valid module directory.',
          log_level: :info
        )

        PDK::CLI::Util.module_version_check

        # Ensure that the bundled gems are up to date and correct Ruby is activated before running or listing tests.
        puppet_env = PDK::CLI::Util.puppet_from_opts_or_env(opts)
        PDK::Util::RubyVersion.use(puppet_env[:ruby_version])

        opts.merge!(puppet_env[:gemset])

        PDK::Util::Bundler.ensure_bundle!(puppet_env[:gemset])

        report = nil

        if opts[:list]
          examples = PDK::Test::Unit.list(opts)

          if examples.empty?
            puts 'No unit test files with examples were found.'
          else
            puts 'Unit Test Files:'
            files = examples.map { |example| example[:file_path] }
            files.uniq.each do |file|
              puts file

              next unless opts[:verbose]

              file_examples = examples.select { |example| example[:file_path] == file }
              file_examples.each do |file_example|
                puts format("\t%{id}\t%{description}", id: file_example[:id], description: file_example[:full_description])
              end
            end
          end
        else
          report = PDK::Report.new
          report_formats = if opts[:format]
                             opts[:interactive] = false
                             PDK::CLI::Util::OptionNormalizer.report_formats(opts[:format])
                           else
                             opts[:interactive] = true
                             [{
                               method: PDK::Report.default_format,
                               target: PDK::Report.default_target
                             }]
                           end

          exit_code = PDK::Test::Unit.invoke(report, opts)

          report_formats.each do |format|
            report.send(format[:method], format[:target])
          end

          exit exit_code
        end
      end
    end
  end
end