class DropboxDotfiles

# File bin/dropbox-dotfiles, line 163
def DropboxDotfiles.configuration(&block)
  dropbox = File.expand_path File.join $my_dropbox_directory, 'Dotfiles'
  home = File.expand_path '~'

  dp = DropboxDotfiles.new(dropbox, home, Stats.new)
  dp.instance_eval &block
  dp.report
end

# File bin/dropbox-dotfiles, line 153
def initialize(dropbox, home, stats)
  @stats = stats

  create_dir_if_doesnt_exists dropbox
  @dropbox = dropbox

  create_dir_if_doesnt_exists home
  @home = home
end

# File bin/dropbox-dotfiles, line 186
def cd(dir, &block)
  dropbox = File.join @dropbox, dir
  home = File.join @home, dir
  DropboxDotfiles.new(dropbox, home, @stats).instance_eval &block
end

# File bin/dropbox-dotfiles, line 192
def dir(name)
  create_link name, :directory?
end

# File bin/dropbox-dotfiles, line 182
def file(name)
  create_link name, :file?
end

# File bin/dropbox-dotfiles, line 172
def report
  if @stats.correct_links == 0 and @stats.links_created == 0 and @stats.errors == 0
    puts 'Your configuration file is empty!'
  else
    puts "#{@stats.correct_links} link were already present and correct"
    puts "#{@stats.links_created} new links were created" if @stats.links_created > 0
    puts "#{@stats.errors} errors" if @stats.errors > 0
  end
end

# File bin/dropbox-dotfiles, line 280
def correct_link(dropbox, home, is)
  if File.exists? dropbox and File.send is, dropbox
    puts 'Do you want to create a backup of the link and then correct it? (y/N): '
    response = STDIN.gets.chomp.downcase
    if response == 'y'
      backup = File.join home, '.old'
      File.move home, backup
      File.symlink dropbox, home
    else
      puts 'link not corrected'
      @stats.error!
    end
  else
    @stats.error!
  end
end

# File bin/dropbox-dotfiles, line 197
def create_dir_if_doesnt_exists(dir)
  unless File.directory? dir
    if File.exists? dir
      error "'#{dir}' is not a directory!"
      exit!
    else
      begin
        Dir.mkdir dir
      rescue Exception => e
        error "#{e.message}"
        exit!
      end
    end
  end
end

# File bin/dropbox-dotfiles, line 213
def create_link(name, is)
  dropbox = File.join @dropbox, name
  home = File.join @home, name
  type = is.to_s.delete '?'

  if File.symlink? home
    link = File.readlink home
    if File.send is, home
      if dropbox == link
        @stats.correct!
      else
        error "'#{home}' points to '#{link}' and not '#{dropbox}'"
        correct_link dropbox, home, is
      end
    else
      error "'#{home}' points to '#{dropbox}' which is not a #{type}"
      correct_link dropbox, home, is
    end
  else
    if File.exists? home
      if File.send is, home
        if File.exists? dropbox
          print "Dropbox already contains '#{home}'"
          print "Do you want to create a backup of '#{home}' and then create the link? (y/N): "
          response = STDIN.gets.chomp.downcase
          if response == 'y'
            backup = home + '.old'
            FileUtils.move home, backup
            File.symlink dropbox, home
          else
            puts "'#{home}' not touched. remember to correct the conflict manually!"
            @stats.error!
          end
        else
          print "Should I move '#{home}' inside Dropbox and create a link? (y/N): "
          response = STDIN.gets.chomp.downcase
          if response == 'y'
            FileUtils.move home, dropbox
            File.symlink dropbox, home
            puts "link '#{home}' created"
            @stats.created!
          else
            puts "'#{home}' ignored"
          end
        end
      else
        error "'#{home}' is not a #{type}"
        @stats.error!
      end
    else
      if File.exists? dropbox
        if File.send is, dropbox
          File.symlink dropbox, home
          puts "link '#{home}' created"
          @stats.created!
        else
          error "'#{dropbox}' is not a #{type}"
          @stats.error!
        end
      else
        error "'#{dropbox}' doesnt exists!"
        @stats.error!
      end
    end
  end
end