module Converter

# File lib/vstheme2scss/converter.rb, line 25
def build_scss_theme(theme)
  colors = theme["colors"]
  tokens = theme["tokenColors"]
  [
    "\t#{theme["name"].downcase.gsub(/ /, "-")}: (",
    "\t\tbackground-color: #{colors["editor.background"] || "#000"},",
    "\t\tforeground-color: #{colors["editor.foreground"] || "#fff"},",
    "#{build_tokens_scss(tokens)}",
  ].join("\n") + "\n\t),"
end

# File lib/vstheme2scss/converter.rb, line 7
def build_tokens_scss(tokens)
  tokens.select{ |token|
    token.key?("name")
  }.uniq{ |token|
    token["name"]
  }.select{ |token|
    not token["name"].include? "[" and not token["name"].include? "]" and not token["name"].include? "/"
  }.select{ |token|
    token["settings"].key?("foreground")
  }.map{ |token|
    name_subbed = token["name"].gsub(/[\: \.\'\,]/, "-")
    # SCSS doesn't support RGBA HEX syntax.
    color = token["settings"]["foreground"]
    color_trimmed = color.gsub(/\#([a-fA-F0-9]{8})/) { |color| color[0...7]}
    "\t\t#{name_subbed.downcase}-color: #{color_trimmed},"
  }.join("\n")
end

# File lib/vstheme2scss/converter.rb, line 49
def get_theme_logic()
  "\n" + '@mixin themify($themes) {' + "\n"\
  '    @each $theme, $map in $themes {' + "\n"\
  '        .theme-#{$theme} & {' + "\n"\
  '            $theme-map: () !global;' + "\n"\
  '            @each $key, $submap in $map {' + "\n"\
  '                $value: map-get(map-get($themes, $theme), "#{$key}");' + "\n"\
  '                $theme-map: map-merge($theme-map, ($key: $value)) !global;' + "\n"\
  '            }' + "\n"\
  '            @content;' + "\n"\
  '            $theme-map: null !global;' + "\n"\
  '        }' + "\n"\
  '    }' + "\n"\
  '}' + "\n"\
  '' + "\n"\
  '@function themed($key) {' + "\n"\
  '    @return map-get($theme-map, $key);' + "\n"\
  '}'
end

# File lib/vstheme2scss/converter.rb, line 69
def make_files(options, themes)
  if not options[:out_file]
      puts "Error: Missing output file"
      exit
  end

  theme_logic = get_theme_logic()
  out_path = Pathname.new(options[:out_file])
  json_res = theme_files_to_hash(themes)
  out_res = json_res.map{ |theme| build_scss_theme(theme) }.join("\n")
  out_path.write("$themes: (\n#{out_res}\n);\n#{theme_logic}")

  if options[:json_list]
    json_out_path = Pathname.new(options[:json_list])
    if json_out_path.directory?
      puts "Error #{json_out_path.dirname}#{json_out_path.basename} is not a file"
    else
      names = json_res.map{ |theme| "#{theme["name"].downcase.gsub(/ /, "-")}" }
      json_out_path.write(names)
    end
  end
end

# File lib/vstheme2scss/converter.rb, line 36
def theme_files_to_hash(themes)
  themes.map{ |theme_file|
    theme_path = Pathname.new(theme_file)
    theme = nil
    if not theme_path.directory?
      theme = JSON.parse(theme_path.read)
    else
      puts "Error: #{theme_path.dirname}#{theme_path.basename} was not a file."
    end
    theme
  }.select{ |theme| theme != nil }
end