Rakefile

# frozen_string_literal: true

require 'bundler/gem_tasks'

require 'rubocop/rake_task'
RuboCop::RakeTask.new(:rubocop) do |t|
  t.options = ['--display-cop-names']
end

require 'yard'
YARD::Rake::YardocTask.new do |t|
  t.files = ['lib/**/*.rb', 'README.md']
end

require 'rake/testtask'

Rake::TestTask.new do |t|
  t.libs.push 'lib'
  t.libs.push 'test'
  t.test_files = FileList['test/test_helper.rb', 'test/**/*_test.rb']
  t.verbose = true
end

task default: :test

desc 'Update the vendored Exiftool to the latest version'
task :update_exiftool do
  require 'open-uri'
  require 'nokogiri'
  require 'pathname'

  doc = Nokogiri::HTML(URI.parse('https://exiftool.org/rss.xml').open)
  latest = doc.xpath('//rss/channel/item/enclosure').select do |ea|
    ea[:url]&.end_with?('.tar.gz')
  end.min
  raise 'Failed to parse the exiftool/rss.xml' if latest.nil?

  latest_url = latest[:url]
  basename = latest_url.split('/').last

  tgz = Pathname.new(File.expand_path("../downloads/#{basename}", __FILE__))
  tgz.parent.mkpath

  if tgz.exist? && tgz.size.positive?
    puts "Assuming #{tgz} is valid…"
  else
    puts "Downloading #{latest_url} to #{tgz}…"
    tgz.open('wb') do |io_out|
      URI.parse(latest_url).open('rb') do |io_in|
        io_out.write(io_in.read)
      end
    end
  end

  dest_dir = File.expand_path('bin', __dir__)
  FileUtils.remove_entry_secure(dest_dir)
  FileUtils.mkdir(dest_dir)
  `tar xzf #{tgz.realpath} -C #{dest_dir}`
  # Move contents out of the subdirectory and into bin directly:
  `mv #{dest_dir}/Image-ExifTool-*/* #{dest_dir}`
  `rmdir #{dest_dir}/Image-ExifTool-*`

  require 'exiftool_vendored/version_extractor'
  new_version = ExiftoolVendored.extract_version
  puts "New rubygem version is #{new_version}!"

  ver_rb = Pathname.new(File.expand_path('lib/exiftool_vendored/version.rb', __dir__))
  ver_rb.open('w') do |io|
    io.write <<~VERSION_FILE
      # frozen_string_literal: true

      module ExiftoolVendored
        VERSION = Gem::Version.new('#{new_version}')
      end
    VERSION_FILE
  end
  `git add --all #{dest_dir}`
  puts "Added #{dest_dir}. Now `rake test`, `git commit -a` and `rake release`…"
end