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# frozen_string_literal: true
class ImageCheck < ::HTMLProofer::Check
SCREEN_SHOT_REGEX = /Screen(?: |%20)Shot(?: |%20)\d+-\d+-\d+(?: |%20)at(?: |%20)\d+.\d+.\d+/.freeze
def empty_alt_tag?
@img.alt.nil? || @img.alt.strip.empty?
end
def terrible_filename?
@img.url =~ SCREEN_SHOT_REGEX
end
def missing_src?
blank?(@img.url)
end
def run
@html.css('img').each do |node|
@img = create_element(node)
line = node.line
content = node.content
next if @img.ignore?
# screenshot filenames should return because of terrible names
if terrible_filename?
add_issue("image has a terrible filename (#{@img.url})", line: line, content: content)
next
end
# does the image exist?
if missing_src?
add_issue('image has no src or srcset attribute', line: line, content: content)
elsif @img.remote?
add_to_external_urls(@img.url)
elsif !@img.exists?
add_issue("internal image #{@img.url} does not exist", line: line, content: content)
end
add_issue("image #{@img.url} does not have an alt attribute", line: line, content: content) if empty_alt_tag? && !@img.ignore_empty_alt? && !@img.ignore_alt?
add_issue("image #{@img.url} uses the http scheme", line: line, content: content) if @img.check_img_http? && @img.scheme == 'http'
end
external_urls
end
end
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