namespace :fonts do
  desc "Convert a font to SVG"
  task :convert_svg => :merb_env do
    TMP_DIR = "/tmp/font-convert"
    TRUETYPE = FontFormat.new(:ttf, :otf)
    POSTSCRIPT = FontFormat.new(:cff, :otf)
    SVG = FontFormat.new(:ttf, :svg)

    file = ARGV[1]
    filename = File.basename(file)
    output_filename = filename.split('.')[0] + ".svg"

    FileUtils.mkdir(TMP_DIR) unless File.exist? TMP_DIR
    FileUtils.cp(file, TMP_DIR)

    naming_strategy = FontFileNamingStrategy.new(filename, TMP_DIR)
    converter = FontProcessing::FontConverter.new(naming_strategy)

    original_font_format = filename =~ /\.ttf$/ ? TRUETYPE : POSTSCRIPT
    FileUtils.cp(naming_strategy.source, naming_strategy.source(original_font_format))

    converter.convert(TRUETYPE) if original_font_format.outline_format != :ttf

    FileUtils.cp(naming_strategy.source(TRUETYPE), naming_strategy.char_set(CharSet.default, TRUETYPE))
    converter.convert_char_set(CharSet.default, TRUETYPE, SVG)

    FileUtils.cp(naming_strategy.char_set(CharSet.default, SVG), File.join(File.dirname(file), output_filename))
    FileUtils.rmdir(TMP_DIR)
  end
end