picker.go

package main

import (
  "net/http"
	"io/ioutil"
	"strings"
	"strconv"
	"math"
	"fmt"
)

type C struct {
	Name string
	Guess uint8
}

var darksidersContestants = []*C{
	&C{"iSparkz", 64},
	&C{"tupto", 128},
	&C{"Nitrous_Ninja", 142},
	&C{"hotsweatyham", 199},
	&C{"phillmans", 21},
	&C{"dualstrike98", 138},
	&C{"Cheeseburgur26", 32},
	&C{"Roger_rabbit23", 62},
}
var rfaContestants = []*C{
	&C{"rbryan06", 17},
	&C{"Abe_lincolin", 56},
	&C{"MrPanda1593", 149},
}

func getNumber() uint8 {
	res, _ := http.Get("http://www.random.org/integers/?num=1&min=0&max=255&col=1&base=10&format=plain&rnd=new")
	defer res.Body.Close()
	body, _ := ioutil.ReadAll(res.Body)
	response := string(body)
	response = strings.Trim(response, "\t \n")
	no, _ := strconv.ParseUint(response, 10, 8)
	no8 := uint8(no)
	if no8 == 42 {
		return getNumber()
	}
	return no8
}

func pickClosest(n uint8, contestants []*C) *C {
	f := float64(n)
	closest := contestants[0]
	for _, c := range(contestants) {
		if math.Abs(float64(c.Guess) - f) < math.Abs(float64(closest.Guess) - f){
			closest = c
		}
	}
	return closest
}

func Rollin(game string, contestants []*C) string {
	winningNo := getNumber()
	winner := pickClosest(winningNo, contestants)
	return fmt.Sprintf("%s wins %s with a guess of %d which was closest to %d!", winner.Name, game, winner.Guess, winningNo)
}

func main() {
	fmt.Println(Rollin("Darksiders", darksidersContestants))
	fmt.Println(Rollin("Red Faction: Armageddon", rfaContestants))
}