require 'date'
require 'active_support'
require 'chronic'

module CucumberValueParser
  def coerce_value(value)
    # what is this, PHP?
    if value.blank?
      nil
    elsif value == 'true'
      true
    elsif value == 'false'
      false
    elsif value =~ /\d+.*,.*\d/ # ???
      value
    elsif value =~ /^\d+\.\d+$/ # float
      value.to_f
    elsif value =~ /^\d+(\.\d+)?\.\.\d+(\.\d+)?$/ # range
      (value.split('..')[0].to_i)..(value.split('..')[1].to_i)
    elsif value =~ /^0+$/ # all zeros => 0
      0
    elsif value =~ /^0/ # zero preceding stuff => the input as a string
      value
    elsif value =~ /^\d+$/ # integer
      value.to_i
    elsif value =~ /Address:/
      value.sub(/Address:\s*/,'')
    elsif value.is_a?(String) and date = Chronic.parse(value)
      date
    else
      value
    end
  end

  def compare_values(a, b)
    if b.blank?
      a.should be_blank
    elsif a.is_a?(Float)
      a.should be_within(0.00001).of(b)
    elsif a.is_a? Date
      a.strftime('%Y-%m-%d').should == b.strftime('%Y-%m-%d')
    elsif a.is_a? Time
      a.strftime('%Y-%m-%d %H:%M:%s').should == b.strftime('%Y-%m-%d %H:%M:%s')
    else
      a.should == b
    end
  end

  def equality?(a, b)
    if b.blank?
      a.blank?
    elsif a.is_a? Date or a.is_a? Time
      b = Date.parse b
      a == b
    elsif b =~ /\d+.*,.*\d/
      a == b
    elsif b =~ /\d+\.\d+/
      (a.to_f - b.to_f).abs <= 0.00001
    elsif b =~ /^0/
      a == b
    elsif b =~ /^\d+$/
      a.to_i == b.to_i
    else
      a == b
    end
  end
end

include CucumberValueParser