# frozen_string_literal: true

module Colorize
  module ClassMethods
    @@color_codes ||= {
      black:         30,
      red:           31,
      green:         32,
      yellow:        33,
      blue:          34,
      magenta:       35,
      cyan:          36,
      white:         37,
      default:       39,
      light_black:   90,
      light_red:     91,
      light_green:   92,
      light_yellow:  93,
      light_blue:    94,
      light_magenta: 95,
      light_cyan:    96,
      light_white:   97
    }

    @@mode_codes ||= {
      default:          0, # Turn off all attributes
      bold:             1,
      dim:              2,
      italic:           3,
      underline:        4,
      blink:            5,
      blink_slow:       5,
      blink_fast:       6,
      invert:           7,
      hide:             8,
      strike:           9,
      double_underline: 20,
      reveal:           28,
      overlined:        53
    }

    #
    # Property for readline support
    #
    def enable_readline_support(value = nil)
      if value.nil?
        if defined?(@@readline_support)
          @@readline_support || false
        else
          false
        end
      else
        @@readline_support = (value || false)
      end
    end

    #
    # Setter for enable readline support
    #
    def enable_readline_support=(value)
      @@readline_support = (value || false)
    end

    #
    # Property for disable colorization
    #
    def disable_colorization(value = nil)
      if value.nil?
        if defined?(@@disable_colorization)
          @@disable_colorization || false
        else
          false
        end
      else
        @@disable_colorization = (value || false)
      end
    end

    #
    # Setter for disable colorization
    #
    def disable_colorization=(value)
      @@disable_colorization = (value || false)
    end

    #
    # Property for prevent recolorization
    #
    def prevent_colors(value = nil)
      if value.nil?
        if defined?(@@prevent_colors)
          @@prevent_colors || false
        else
          false
        end
      else
        @@prevent_colors = (value || false)
      end
    end

    #
    # Setter for prevent recolorization
    #
    def prevent_colors=(value)
      @@prevent_colors = (value || false)
    end

    #
    # Return array of available colors used by colorize
    #
    def colors
      color_codes.keys
    end

    #
    # Return array of available modes used by colorize
    #
    def modes
      mode_codes.keys
    end

    #
    # Display color samples
    #
    def color_samples
      colors.permutation(2).each do |background, color|
        sample_text = "#{color.inspect.rjust(15)} on #{background.inspect.ljust(15)}"
        puts "#{new(sample_text).colorize(:color => color, :background => background)} #{sample_text}"
      end
    end

    #
    # Add color alias
    #
    def add_color_alias(*params)
      parse_color_alias_params(params).each do |_alias_, _color_|
        check_if_color_available!(_alias_)
        check_if_color_exist!(_color_)

        add_color_code(_alias_, color_codes[_color_])
        add_color_method(_alias_)
      end
    end

    # private

    #
    # Color codes hash
    #
    def color_codes
      @@color_codes
    end

    def add_color_code(code, color)
      @@color_codes[code] = color
    end

    #
    # Mode codes hash
    #
    def mode_codes
      @@mode_codes
    end

    #
    # Generate color and on_color methods
    #
    def color_methods
      colors.each do |key|
        next if key == :default

        add_color_method(key)
      end
    end

    #
    # Generate color and on_color method
    #
    def add_color_method(key)
      define_method key do
        colorize(:color => key)
      end

      define_method "on_#{key}" do
        colorize(:background => key)
      end
    end

    #
    # Generate modes methods
    #
    def modes_methods
      modes.each do |key|
        next if key == :default

        define_method key do
          colorize(:mode => key)
        end
      end
    end

    def parse_color_alias_params(params)
      return [params] if params.is_a?(Array) && params.length == 2

      params.flat_map do |param|
        next param if param.is_a?(Array) && param.length == 2
        next param.to_a if param.is_a?(Hash)
      end
    end

    #
    # Check if color exists
    #
    def check_if_color_available!(color)
      color_exist?(color) && fail(::Colorize::ColorAlreadyExist, "Colorize: color named :#{color} already exist!")
    end

    #
    # Check if color is missing
    #
    def check_if_color_exist!(color)
      color_exist?(color) || fail(::Colorize::ColorDontExist, "Colorize: color :#{color} don't exist!")
    end

    def color_exist?(color)
      !color_codes[color].nil?
    end
  end
end