class Border

# File lib/spreadsheet_builder/border.rb, line 3
def initialize(key, val, dir = nil)
  @dir     = dir && dir.to_sym
  @vals    = val.scan(/[^\s]+/)
  @keys    = key.scan(/[^-]+/)
  @border  = self
  dir_hash = { top: nil, bottom: nil, left: nil, right: nil }
  @css     = { 
    color: dir_hash.dup,
    style: dir_hash.dup,
    width: dir_hash.dup
  }

  case @keys[1]
  when Proc.new { |type| @css.keys.include?(type.to_sym) if type }
    assign_vals_to(@keys[1])
  when nil # "border"
    width, style, color = @vals
    w, s, c = @css[:width], @css[:style], @css[:color]

    w[:top] = w[:bottom] = w[:left] = w[:right] = width
    s[:top] = s[:bottom] = s[:left] = s[:right] = style
    c[:top] = c[:bottom] = c[:left] = c[:right] = color
  else     # "border-left"
    dir     = @keys.delete_at(1)
    @border = Border.new(@keys.join('-'), @vals.join(' '), dir)
  end
end

# File lib/spreadsheet_builder/border.rb, line 38
def assign_vals_to(type)
  t = @css[type.to_sym]
  case @vals.length
  when 1
    t[:top] = t[:bottom] = t[:left] = t[:right] = @vals[0]
  when 2
    t[:top]  = t[:bottom] = @vals[0]
    t[:left] = t[:right]  = @vals[1]
  when 3
    t[:top]              = @vals[0]
    t[:left] = t[:right] = @vals[1]
    t[:bottom]           = @vals[2]
  when 4
    t[:top], t[:bottom], t[:left], t[:right] = @vals
  end
end

# File lib/spreadsheet_builder/border.rb, line 55
def format
  @border._format
end

# File lib/spreadsheet_builder/border.rb, line 87
def _format
  format = {}

  # merge width and style
  translated_values.values.first.keys.each do  |dir|
    width = translated_values[:width][dir] 
    style = translated_values[:style][dir]

    if width && style && width != style
      found = SPREADSHEET_VALUES.find { |val|
        val.to_s =~ /#{width}/ && val.to_s =~ /#{style}/
      }
      if found
        translated_values[:width][dir] = found
        translated_values[:style][dir] = found
      end
    end
  end

  dirs = @dir ? [@dir] : translated_values.values.first.keys
  dirs.each do |dir|
    style = translated_values[:width][dir] || translated_values[:style][dir]
    color = translated_values[:color][dir]

    format["#{dir}_color".to_sym] = color if color
    format[dir.to_sym]            = style if style
    format[:pattern_fg_color]     = color if style.to_s =~ /(dash|dott)/
  end
  format
end

# File lib/spreadsheet_builder/border.rb, line 148
def translate_color(val)
  return unless val

  SpreadsheetBuilder::Palette._color_from_input(val)
end

# File lib/spreadsheet_builder/border.rb, line 154
def translate_style(val)
  return unless val

  if SPREADSHEET_VALUES.include?(val.to_sym) 
    val.to_sym
  else
    :thin
  end
end

# File lib/spreadsheet_builder/border.rb, line 133
def translate_width(val)
  return unless val

  if val.to_i.to_s == val.to_s
    val = val.to_i
    if    val <= 0 then nil
    elsif val 1    then :thin
    elsif val 2    then :medium
    else                :thick
    end
  elsif SPREADSHEET_VALUES.include?(val.to_sym)
    val.to_sym
  end
end

# File lib/spreadsheet_builder/border.rb, line 119
def translated_values
  return @translated_values if @translated_values

  @translated_values = {}
  @css.each { |k,v| @translated_values[k] = v.dup }

  @translated_values.each do |type, vals|
    vals.each do |dir, v|
      @translated_values[type][dir] = __send__("translate_#{type}", v)
    end
  end
end