# frozen_string_literal: true
# This example tries Nokogiri (used in Shoes 4), but falls back to
# Hpricot for Shoes 3 compatibility
begin
  require 'nokogiri'
rescue LoadError
  require 'hpricot'
end

class Comic
  attr_reader :rss, :title

  def initialize(body)
    @rss = defined?(Nokogiri) ? Nokogiri::XML(body) : Hpricot(body)
    @title = @rss.at("//channel/title").inner_text
  end

  def items
    @rss.search("//channel/item")
  end

  def latest_image
    @rss.search("//channel/item").first.inner_html.scan(/src="([^"]+\.\w+)"/).first
  end
end

Shoes.app width: 800, height: 600 do
  background "#555"

  @title = "Web Funnies"
  @feeds = [
    "http://xkcd.com/rss.xml",
    "http://www.smbc-comics.com/rss.php",
    "http://www.daybydaycartoon.com/feed/",
    "http://www.questionablecontent.net/QCRSS.xml",
    "http://thisisindexed.com/feed/",
  ]

  stack margin: 10 do
    title strong(@title), align: "center", stroke: "#DFA", margin: 0
    para "(loaded from RSS feeds)", align: "center", stroke: "#DFA", margin: 0

    @feeds.each do |feed|
      download feed do |dl|
        # Fall back to Shoes 3 syntax if necessary
        body = dl.respond_to?(:read) ? dl.read : dl.response.body
        c = Comic.new body
        if c.latest_image
          stack width: "100%", margin: 10, border: 1 do
            stack margin_right: gutter do
              background "#333", curve: 4
              caption c.title, stroke: "#CD9", margin: 4
            end
            image c.latest_image.first, margin: 8
          end
        end
      end
    end
  end
end