# frozen_string_literal: false

require 'spec_helper'

describe USPSFlags do
  before do
    @valid_header = <<~SVG
      <?xml version="1.0" standalone="no"?>
      <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN" "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
      <svg version="1.0" xmlns="http://www.w3.org/2000/svg" width="614" height="409" viewBox="-3.072 -4.096 3084.288 2058.24" preserveAspectRatio="xMidYMid meet">
      <title>LTC</title>
      <metadata>
      <desc id="created-by">Julian Fiander</desc>
    SVG

    @valid_body = <<~SVG
      <desc id="trademark-desc">This image is a registered trademark of United States Power Squadrons.</desc>
      <desc id="trademark-link">https://www.usps.org/images/secretary/itcom/trademark.pdf</desc>
      </metadata><g transform="translate(-512)">
      <path d="M 1536 512
      l 80 184
      l -40 -24
      l 0 864
      l -80 0
      l 0 -864
      l -40 24
      l 80 -184
      " fill="#E4002B" />
      <path d="M 1296 1040
      l 480 0
      l 0 80
      l -480 0
      l 0 -80
      " fill="#E4002B" />
      <path d="M 1296 1041
      l 0 -464
      l 120 168
      l -40 0
      l 0 296
      " fill="#E4002B" />
      <path d="M 1776 1041
      l 0 -464
      l -120 168
      l 40 0
      l 0 296
      " fill="#E4002B" />
      <path d="M 1400 1200
      l 273 0
      l 0 80
      l -273 0
      l 0 -80
      " fill="#E4002B" />
      </g>
      <g transform="translate(512)">
      <path d="M 1536 512
      l 80 184
      l -40 -24
      l 0 864
      l -80 0
      l 0 -864
      l -40 24
      l 80 -184
      " fill="#E4002B" />
      <path d="M 1296 1040
      l 480 0
      l 0 80
      l -480 0
      l 0 -80
      " fill="#E4002B" />
      <path d="M 1296 1041
      l 0 -464
      l 120 168
      l -40 0
      l 0 296
      " fill="#E4002B" />
      <path d="M 1776 1041
      l 0 -464
      l -120 168
      l 40 0
      l 0 296
      " fill="#E4002B" />
      <path d="M 1400 1200
      l 273 0
      l 0 80
      l -273 0
      l 0 -80
      " fill="#E4002B" />
      </g>
      </svg>
    SVG

    @flag = described_class.new
  end

  describe 'constructor' do
    it 'updates type' do
      @flag.type = 'LtC'
      expect(@flag.type).to eql('LtC')
    end

    it 'updates scale' do
      @flag.scale = 4
      expect(@flag.scale).to be(4)
    end

    it 'updates field' do
      @flag.field = false
      expect(@flag.field).to be(false)
    end

    it 'updates trim' do
      @flag.trim = true
      expect(@flag.trim).to be(true)
    end

    it 'correctlies update svg_file' do
      @flag.svg_file = "#{$tmp_alt_flags_dir}/SVG/output.svg"
      expect(@flag.svg_file).to eql("#{$tmp_alt_flags_dir}/SVG/output.svg")
    end

    it 'correctlies update png_file' do
      @flag.png_file = "#{$tmp_alt_flags_dir}/PNG/output.png"
      expect(@flag.png_file).to eql("#{$tmp_alt_flags_dir}/PNG/output.png")
    end

    describe 'as configured' do
      before do
        @flag.type = 'LtC'
        @flag.scale = 5
        @flag.svg_file = ''
      end

      it 'constructs and generate a flag with a valid header' do
        expect(@flag.svg).to include(@valid_header)
      end

      it 'constructs and generate a flag with a valid body' do
        expect(@flag.svg).to include(@valid_body)
      end

      describe 'png' do
        it 'raises PNGGenerationError without png_file set' do
          expect { @flag.png }.to raise_error(
            USPSFlags::Errors::PNGGenerationError, 'A path must be set with png_file.'
          )
        end

        context 'with png_file set' do
          before do
            @flag.png_file = "#{$tmp_alt_flags_dir}/PNG/LtC.png"
            ::FileUtils.mkdir_p("#{$tmp_alt_flags_dir}/PNG/")
          end

          it 'does not raise PNGGenerationError with png_file set' do
            expect { @flag.png }.not_to raise_error
          end

          it 'returns the value of png_file' do
            expect(@flag.png).to eql("#{$tmp_alt_flags_dir}/PNG/LtC.png")
          end
        end
      end
    end
  end
end