# Copyright (c) 2023 M.J.N. Corino, The Netherlands
#
# This software is released under the MIT license.
# 
# Some parts are
# Copyright 2004-2007, wxRuby development team
# released under the MIT-like wxRuby2 license

require 'date'

module Wx

  class Variant
    include ::Enumerable

    # add a proper enumerator method
    def each
      if block_given?
        get_count.times { |i| yield self[i] }
      else
        ::Enumerator.new { |y| get_count.times { |i| y << self[i] } }
      end
    end

    # make assign return self and add it's handy alias
    wx_assign = instance_method :assign
    define_method :assign do |v|
      wx_assign.bind(self).call(v)
      self
    end
    alias :<< :assign

    # extend to_s to arraylist and list (easier in pure Ruby)

    wx_to_s = instance_method :to_s
    define_method :to_s do
      unless null?
        case type
        when 'list'
          return "[#{each.collect { |v| v.string? ? %Q{"#{v.to_s}"} : v.to_s }.join(', ')}]"
        when 'arrstring'
          return array_string.to_s
        when 'wxFont'
          return font.to_s
        when 'wxColour'
          return colour.to_s
        when 'wxColourPropertyValue'
          return colour_property_value.to_s
        end
      end
      wx_to_s.bind(self).call
    end

    # extend with more Ruby-like type checking

    def string?
      !null? && is_type('string');
    end

    def bool?
      !null? && is_type('bool');
    end

    def long?
      !null? && is_type('long');
    end

    def long_long?
      !null? && is_type('longlong');
    end

    def u_long_long?
      !null? && is_type('ulonglong');
    end

    def integer?
      !null? && (long? || long_long? || u_long_long?);
    end

    def date_time?
      !null? && is_type('datetime');
    end

    def double?
      !null? && is_type('double');
    end

    def numeric?
      !null? && (integer? || double?);
    end

    def list?
      !null? && is_type('list');
    end

    def array_string?
      !null? && is_type('arrstring');
    end

    def font?
      !null? && is_type('wxFont');
    end

    def colour?
      !null? && is_type('wxColour');
    end

    def colour_property_value?
      !null? && is_type('wxColourPropertyValue');
    end

    def object?(klass = Object)
      !null? && is_type('WXRB_VALUE') && klass === object;
    end

    def dup
      self.class.new(self)
    end

    def clone
      dup
    end

  end

end