module Quotewall

# File lib/quotewall.rb, line 8
def self.check_osx
  `sw_vers -productName`.include?("Mac OS X")
end

# File lib/quotewall.rb, line 12
def self.display
  result = Plist::parse_xml(`system_profiler -xml SPDisplaysDataType`)
  width, height = result[0]["_items"][0]["spdisplays_ndrvs"][0]["spdisplays_resolution"].split("x")
  {:width  => width.to_i,
   :height => height.to_i
  }
end

# File lib/quotewall.rb, line 77
def self.read_default_background
  `defaults read com.apple.desktop Background`
end

# File lib/quotewall.rb, line 20
def self.rearange(string)
  if string.size < 35
    return [string]
  else
    lines = [] 
    idx = 0
    string.split(" ").each do |word|
      lines[idx] = "" if lines[idx].nil?
      if lines[idx].size + word.size < 35
        lines[idx] = "#{lines[idx]} #{word}"
      else
        idx += 1
        lines[idx] = word
      end
    end
    return lines
  end
end

# File lib/quotewall.rb, line 81
def self.refresh_background
  `killall Dock`
end

# File lib/quotewall.rb, line 39
def self.run(args)
  img = Magick::Image.new(display[:width],display[:height]) { self.background_color = "#0d1030" }
  text = Magick::Draw.new
  who = args.size == 2 ? args[1] : "Anonymous"
  lines = rearange(args[0])
  lines.each_with_index do |line, idx|
    y = ( (idx + 1) * 76) - ((lines.size + 1) * 35) 
    text.annotate(img, 0, 0, 0, y, line.strip) {
        self.font_family = 'Geneva'
        self.gravity = Magick::CenterGravity
        self.pointsize = 64 
        self.stroke = 'transparent'
        self.fill = '#79c7e3'
        self.font_weight = Magick::BoldWeight
        }
  end

  text.annotate(img, 0, 0, 300, 100, "- #{who}") {
      self.font_family = 'Geneva'
      self.gravity = Magick::SouthEastGravity
      self.pointsize = 64 
      self.stroke = 'transparent'
      self.fill = '#f70352'
      self.font_weight = Magick::NormalWeight
      }

  pictures_path = File.expand_path("~/Pictures")
  img.write(File.join(pictures_path, "quotewall.jpg"))
  wall_path = File.join(pictures_path, "quotewall.jpg")
  set_default_background(wall_path)
  refresh_background

end

# File lib/quotewall.rb, line 73
def self.set_default_background(wall_path)
  `defaults write com.apple.desktop Background '{default = {ImageFilePath = "#{wall_path}"; }; }'`
end