require_relative '../../../test_helper'

module Vedeu
  describe Compositor do
    let(:described_class)    { Compositor }
    let(:described_instance) { described_class.new(output, interface) }
    let(:subject)            { described_instance }
    let(:output)             { [[]] }
    let(:stream)             { [] }
    let(:interface)          { 'dummy' }

    before do
      Interface.create({ name: 'dummy', width: 15, height: 2 })
      Interface.create({ name: 'test_interface', width: 15, height: 2 })
    end

    after do
      InterfaceRepository.reset
    end

    it 'returns a Compositor instance' do
      subject.must_be_instance_of(Compositor)
    end

    it 'sets an instance variable' do
      subject.instance_variable_get("@output").must_equal([[]])
    end

    it 'sets an instance variable' do
      subject.instance_variable_get("@interface").must_equal("dummy")
    end

    describe '.arrange' do
      let(:subject) { described_class.arrange(output, interface) }

      context 'when empty' do
        let(:output) { [] }

        it 'returns a NilClass' do
          subject.must_be_instance_of(NilClass)
        end
      end

      context 'when an array (single interface)' do
        let(:output) { [[]] }

        it 'returns an Array' do
          subject.must_be_instance_of(Array)
        end
      end

      context 'when a hash (multiple interfaces)' do
        let(:output) { { 'test_interface' => [] } }

        it 'returns an Array' do
          subject.must_be_instance_of(Array)
        end
      end

      context 'when unstyled' do
        context 'and a single line' do
          let(:output) { { 'dummy' => [['Some text...']] } }
          let(:stream) {
            [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1HSome text...\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
          }

          it 'returns the enqueue composition' do
            subject.must_equal(stream)
          end
        end

        context 'and multi-line' do
          let(:output) {
            {
              'dummy' => [
                ['Some text...'],
                ['Some more text...']
              ]
            }
          }
          let(:stream) {
            [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1HSome text...\e[2;1H               \e[2;1H", "\e[1;1H               \e[1;1HSome more tex...\e[0m\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
          }

          it 'returns a String' do
            subject.must_equal(stream)
          end
        end
      end

      context 'when styled' do
        context 'with colour pair' do
          context 'and a single line' do
            let(:output) {
              {
                'dummy' => [
                  [{ colour: [:red, :white] }, 'Some text...']
                ]
              }
            }
            let(:stream) {
              [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[38;2;31m\e[48;2;47m\e[2;1H               \e[2;1HSome text...", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
            }

            it 'returns a String' do
              subject.must_equal(stream)
            end
          end

          context 'and multi-line' do
            let(:output) {
              {
                'dummy' => [
                  [{ colour: [:red, :white] },   'Some text...'],
                  [{ colour: [:blue, :yellow] }, 'Some more text...']
                ]
              }
            }
            let(:stream) {
              [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[38;2;31m\e[48;2;47m\e[2;1H               \e[2;1HSome text...", "\e[1;1H               \e[1;1H\e[38;2;34m\e[48;2;43m\e[2;1H               \e[2;1HSome more tex...\e[0m", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
            }

            it 'returns a String' do
              subject.must_equal(stream)
            end
          end
        end

        context 'with a style' do
          context 'and a single line' do
            let(:output) {
              {
                'dummy' => [
                  [{ style: :bold }, 'Some text...']
                ]
              }
            }
            let(:stream) {
              [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[1m\e[2;1H               \e[2;1HSome text...", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
            }

            it 'returns a String' do
              subject.must_equal(stream)
            end
          end

          context 'and multi-line' do
            let(:output) {
              {
                'dummy' => [
                  [{ style: :inverse },   'Some text...'],
                  [{ style: :underline }, 'Some more text...']
                ]
              }
            }
            let(:stream) {
              [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[7m\e[2;1H               \e[2;1HSome text...", "\e[1;1H               \e[1;1H\e[4m\e[2;1H               \e[2;1HSome more tex...\e[0m", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
            }

            it 'returns a String' do
              subject.must_equal(stream)
            end
          end
        end

        context 'with an unknown style' do
          let(:output) {
            {
              'dummy' => [
                [{ style: :unknown }, 'Some text...']
              ]
            }
          }
          let(:stream) {
            [[["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1HSome text...", "\e[38;2;39m\e[48;2;49m", "\e[?25h"], ["\e[38;2;39m\e[48;2;49m", "\e[1;1H               \e[1;1H\e[2;1H               \e[2;1H", "\e[38;2;39m\e[48;2;49m", "\e[?25h"]]]
          }

          it 'renders in the default style' do
            subject.must_equal(stream)
          end
        end
      end
    end
  end
end