class Importmap::Commands

def json
  puts Rails.application.importmap.to_json(resolver: ActionController::Base.helpers)
end

def packager
  @packager ||= Importmap::Packager.new
end

def pin(*packages)
  if imports = packager.import(*packages, env: options[:env], from: options[:from])
    imports.each do |package, url|
      puts %(Pinning "#{package}" to #{url})
      pin = packager.pin_for(package, url)
      if packager.packaged?(package)
        gsub_file("config/importmap.rb", /^pin "#{package}".*$/, pin, verbose: false)
      else
        append_to_file("config/importmap.rb", "#{pin}\n", verbose: false)
      end
    end
  else
    puts "Couldn't find any packages in #{packages.inspect} on #{options[:provider]}"
  end
end

def remove_line_from_file(path, pattern)
  path = File.expand_path(path, destination_root)
  all_lines = File.readlines(path)
  with_lines_removed = all_lines.select { |line| line !~ pattern }
  File.open(path, "w") do |file|
    with_lines_removed.each { |line| file.write(line) }
  end
end

def unpin(*packages)
  if imports = packager.import(*packages, env: options[:env], from: options[:from])
    imports.each do |package, url|
      if packager.packaged?(package)
        puts %(Unpinning "#{package}")
        remove_line_from_file "config/importmap.rb", /pin "#{package}"/
      end
    end
  else
    puts "Couldn't find any packages in #{packages.inspect} on #{options[:provider]}"
  end
end