class Terminal::Table::Cell

def align(val, position, length)
  positions = { :left => :ljust, :right => :rjust, :center => :center }
  val.public_send(positions[position], length)
end

def alignment
  @alignment || @table.style.alignment || :left
end

def alignment=(val)
  supported = %w(left center right)
  if supported.include?(val.to_s)
    @alignment = val
  else
    raise "Aligment must be one of: #{supported.join(' ')}"
  end
end

def alignment?
  !@alignment.nil?
end

def escape(line)
  line.to_s.gsub(/\x1b(\[|\(|\))[;?0-9]*[0-9A-Za-z]/, '').
    gsub(/\x1b(\[|\(|\))[;?0-9]*[0-9A-Za-z]/, '').
    gsub(/(\x03|\x1a)/, '')
end

def initialize options = nil
  @value, options = options, {} unless Hash === options
  @value = options.fetch :value, value
  @alignment = options.fetch :alignment, nil
  @colspan = options.fetch :colspan, 1
  @width = options.fetch :width, @value.to_s.size
  @index = options.fetch :index
  @table = options.fetch :table
end

def lines
  @value.to_s.split(/\n/)
end

def render(line = 0)
  left = " " * @table.style.padding_left
  right = " " * @table.style.padding_right
  render_width = lines[line].to_s.size - escape(lines[line]).size + width
  align("#{left}#{lines[line]}#{right}", alignment, render_width + @table.cell_padding)
end

def value_for_column_width_recalc
  lines.map{ |s| escape(s) }.max_by{ |s| s.size }
end

def width
  padding = (colspan - 1) * @table.cell_spacing
  inner_width = (1..@colspan).to_a.inject(0) do |w, counter|
    w + @table.column_width(@index + counter - 1)
  end
  inner_width + padding
end