play rock, scissors, paper against my code

ruby_game.rb

puts "please type rock, scissors or paper"
player = gets.chomp


rand(1..3)
	if rand(1..3) == 1
		computer = "rock"
	elsif rand(1..3) == 2
		computer = "scissors"
	else
		computer = "paper"	
	end

	

def game(player, computer)
	unless player == computer
		if player == "rock"  
			if computer == "scissors" 
				puts "you win, cause rock beats scissors!"
			elsif computer == "paper"
				puts "the computer wins, cause paper beats rock"
			end			
		elsif player == "paper" 
			if computer == "scissors" 
				puts "the computer wins, cause scissors cut the paper!"
			elsif computer == "rock"
				puts "you win, cause paper wrappes around the rock!"
			end
		elsif player == "scissors"
			if computer == "rock"
				puts "the computer beats your scissors with rock!"
			elsif computer == "paper"
				puts "you win, cause your scissors cut the paper"
			end
		else
			puts "you probably didn't type scissors, rock or paper correctly"
		end
	else 
		puts "you both picked the same thing, play again!"
	end
end

game(player, computer)