require 'helper'
require 'test_channel_xml'
require 'open3'
require 'uri'
require 'json'

#
# End-to-end test
#
# Same as TestChannelXML, but with the XML generated by calling the bin script
#
class TestApp < TestChannelXML
  include DropcasterTest
  APP_SCRIPT = 'ruby bin/dropcaster'

  def channel_rss
    %x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3}]
  end

  def test_overwrite_title
    test_title = 'Alice and Bob in Wonderland'
    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --title '#{test_title}'])
    assert_equal(test_title, channel.find('title').first.content)
  end

  def test_overwrite_link
    test_link = 'http://www.example.com/foo/bar'
    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --url '#{test_link}'])
    assert_equal(test_link, channel.find('link').first.content)
  end

  def test_dir_only
    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURES_DIR}])
    assert_equal(1, channel.find('item').size)
  end

  def test_overwrite_enclosures_url
    test_enclosures_url = 'http://www.example.com/foo/bar/episodes/'
    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --enclosures '#{test_enclosures_url}'])
    item = channel.find("item").first
    assert(item)
    enclosure = item.find('enclosure').first
    assert(enclosure)
    assert_equal(URI.join(test_enclosures_url, FIXTURE_ITUNES_MP3).to_s, enclosure['url'])
  end

  def test_overwrite_image_url_channel
    test_image_url = 'http://www.example.com/foo/bar/override.gif'
    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --image '#{test_image_url}'])
    assert_equal(test_image_url, channel.find('itunes:image').first['href'])
  end

  def test_overwrite_image_url_enclosure
    # TODO Implement test
  end

  def test_overwrite_description
    test_description = 'Testing commandline apps is not that hard.'
    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --description '#{test_description}'])
    assert_equal(test_description, channel.find('description').first.content)
    assert_equal(test_description, channel.find('itunes:summary', NS_ITUNES).first.content)
  end

  def test_no_channel_file
    Open3.popen3(APP_SCRIPT){|stdin, stdout, stderr|
      assert_match(/ERROR: No channel file found/, stderr.read)
    } unless Kernel.is_windows?
  end

  def test_overwrite_all
    test_title = 'Bob and Alice in Wonderland'
    test_link = 'http://www.example.com/bar/foot'
    test_description = 'Testing commandline apps is really not that hard.'

    channel = channel_node(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --title '#{test_title}' --url '#{test_link}' --description '#{test_description}'])

    assert_equal(test_title, channel.find('title').first.content)
    assert_equal(test_link, channel.find('link').first.content)
    assert_equal(test_description, channel.find('description').first.content)
    assert_equal(test_description, channel.find('itunes:summary', NS_ITUNES).first.content)
  end

  def test_channel_template_not_found
    Open3.popen3("#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --channel-template foo/bar/42"){|stdin, stdout, stderr|
      assert_match(/Unable to load template file/, stderr.read)
    } unless Kernel.is_windows?
  end

  #
  # We supply an alternative channel template that produces JSON, parse it back and make some basic assertions on the results
  #
  def test_overwrite_channel_template
    channel_template = File.join(FIXTURES_DIR, 'test_template.json.erb')
    channel = JSON.parse(%x[#{APP_SCRIPT} #{FIXTURE_ITUNES_MP3} --channel-template #{channel_template}])
    assert_equal("All About Everything", channel['channel']['title'])
  end

  # TODO --channel
end