#!/usr/bin/env ruby
# Program named: wfcalc
# Create by Kim "Hagbarddenstore" Johansson
# 2008-02-09
# Licensed under BSD license.
# Do whatever you want with this program.

# Check if we have valid amount of arguments.
if ARGV.size < 3
	puts "wfcalc {type} {grade} {amount}"
	exit 1
end

# The five types we can calculate and their grades.
TYPES = {
	"Iron"=>["Raw","Depleted","Normal","Pure","Refined",],
	"Silicon"=>["Raw","Depleted","Pure","Good","Refined"],
	"Iridium"=>["Raw","Depleted","Pure","Good","Refined"],
	"Titanium"=>["Raw","Depleted","Pure","Good","Refined"],
	"Stethan"=>["Pure"]
}

# The objects with the data we want.
type = ARGV[0].capitalize
grade = ARGV[1].capitalize
amount = ARGV[2].to_i

# Check if we have greater amount than 0.
if false == ( amount > 0 )
	puts "Amount must be greater than 0."
	exit 1
end

# Check if we have a valid type.
if TYPES.include?(type) == false
	puts "Valid types are: #{TYPES.keys.join(' ')}"
	exit 1
end

# Check if we have a valid grade.
if TYPES[type].include?(grade) == false
	puts "Valid grades for #{type} are: #{TYPES[type].join(' ')}"
	exit 1
end

# If Stethan, we only have one option.
if type == "Stethan"
	puts "To create #{amount}x Stethan you need:"
	puts "#{amount}x Iron (Depleted)"
	puts "#{amount}x Silicon (Depleted)"
	puts "#{amount}x Iridium (Depleted)"
	puts "#{amount}x Titanium (Depleted)"
end

# Loop through each grade and print out
# how many you need of each type
# to get to the top type that you want.
i = 0
TYPES[type].each do |g|
	if g == grade
		i.times { amount *= 10 }
		i.times do |j|
			str = "You need #{amount}x #{type} (#{TYPES[type][j]})"
			str += " to create #{amount/=10}x #{type} (#{TYPES[type][j+1]})"
			puts str
		end
		break
	else
		i += 1
	end
end