def calcSquarePerimeter(side1, side2)

	return ((side1*2) + (side2*2))

end

def calcTrianglePerimeter(side1, side2)

	return ((side1*2) + (side2))

end

def calcTriangleHypotenuse

	return (side1.Math.sqrt(x)**2) + (side2.Math.sqrt(x)**2)

end

def create_writefile(file, square_area, side1, side2)

  File.open(ARGV[1], 'a') do |file|
    file.write(square_area)

  end
end





unless ARGV.size == 2
  STDERR.puts "Error: Incorrect number of arguements\n\nOK. Goodbye."

else
	puts " "
	puts "--------------------"
	puts " "
	puts "Processing: #{ARGV[0]} (input), #{ARGV[1]} (output)"
	puts " "
	puts "--------------------"
	puts " "

	create_writefile(ARGV[1], "Shape Type", "Area", "Perimeter", "Data\n")

	in_file = File.new(ARGV[0], 'r')

	in_file.each_line do |line|


		if line.include?("S") || line.include?("s")
			puts "Square"
			nums = line.scan(/\d+/).map(&:to_i)
			nums.map(&:to_i)
			side1 = nums[0]
			side2 = nums[1]
			if !side2
				puts "ERROR"

			else
				square_area = calcSquareArea(side1, side2)
			end
			puts " "

		elsif line.include?("R") || line.include?("r")
			puts "Rectangle"
			nums = line.scan(/\d+/).map(&:to_i)
			nums.map(&:to_i)
			side1 = nums[0]
			side2 = nums[1]
			if !side2
			else
			end
			puts " "

		elsif line.include?("C") || line.include?("c")
			puts "Circle"
			nums = line.scan(/\d+/).map(&:to_i)
			nums.map(&:to_i)
			side1 = nums[0]
			side2 = nums[1]
			if !side2

			else

			end

			puts " "

		elsif line.include?("T") || line.include?("t")
			puts "Triangle"
			nums = line.scan(/\d+/).map(&:to_i)
			nums.map(&:to_i)
			side1 = nums[0]
			side2 = nums[1]
			if !side2

		else
			triangle_perm = calcTrianglePerimeter(side1, side2)
		end

	puts " "


		else
			puts "else"
		end
		create_writefile(ARGV[1], square_area)

	end

end