require 'rake'
require 'rake/testtask'

module Henry

  class Task

    # The Henry Task implementation for MiniTest
    class MiniTestTask < Task

      # The temporary output file path for the MiniTest execution.
      OUT_PATH = 'minitest.out'

      # The reports path template.
      REPORTS_DIR = '.henry/reports/minitest'

      # Executes the Task and returns its results.
      def execute
        begin
          Rake.application['minitest'].invoke

          self.execution.code = 'OK'
          self.execution.message = 'OK'
          self.execution.output = File.open(OUT_PATH, 'r').read
        rescue Exception => e
          self.execution.code = 'ERROR'
          self.execution.message = 'ERROR'
          self.execution.output = File.open(OUT_PATH, 'r').read
          self.execution.backtrace = e.message
        end
      end

      # Configures the Task.
      #
      # @param [Hash] params the task params.
      def configure(params, extended_context={})
        File.open(OUT_PATH, 'w') { |f| }

        pattern = params['pattern'] || './spec{,/*/**}/*_spec.rb'
        format  = params['format']  || 'SpecReporter'

        File.open("preconfig.rb", 'w') do |f|
          f.write <<CODE
$stdout = File.open('#{OUT_PATH}', 'w')
require 'minitest/autorun'
require 'minitest/reporters'
MiniTest::Reporters.use! MiniTest::Reporters::#{format}.new
CODE
        end

        # Makes available the spec rake task.
        Rake::TestTask.new('minitest') do |t|
          t.pattern = pattern
          t.ruby_opts << "-r ./preconfig"
        end

        self.export_params(params)
      end

    end

  end

end