package main

import (
	"math"
	"math/rand"
	"strconv"
)

type item struct {
	kind  int
	match *match
	owner *client
}

func (i *item) name() string {
	switch i.kind {
	case 0:
		return "Saw"
	case 1:
		return "Beer"
	case 2:
		return "Phone"
	case 3:
		return "Magnifying glass"
	case 4:
		return "Expired medicine"
	case 5:
		return "Cigarette pack"
	case 6:
		return "Inverter"
	case 7:
		return "Adrenaline"
	default:
		return "None"
	}
}

func (i *item) useItem(param1 int) {
	successfully := false
	if i.owner.isHost != i.owner.match.guestsTurn {

		successfully = true
		switch i.kind {
		case 0:
			i.match.gun.doubled = true
			i.match.sendMessage("I doubled the damage for 1 round by sawing the shotgun", i.owner)
			break

		case 1:
			i.match.gun.rack()
			i.match.sendMessage("I rack the magazine", i.owner)
			i.match.announceRounds()
			break

		case 2:
			roundIndex := rand.Intn(len(i.match.gun.magazine) - 2)
			round := i.match.gun.magazine[roundIndex]
			roundString := ""
			if round {
				roundString = "live"
			} else {
				roundString = "blank"
			}
			roundForPlayer := int(math.Abs(float64(len(i.match.gun.magazine) - 2 - roundIndex)))
			i.match.sendMessage("I used a phone", i.owner)
			i.owner.send("The " + strconv.Itoa(roundForPlayer) + " round from now is " + roundString)
			break

		case 3:
			round := i.match.gun.magazine[len(i.match.gun.magazine)-1]
			roundString := ""
			if round {
				roundString = "live"
			} else {
				roundString = "blank"
			}
			i.match.sendMessage("I used a magnifying glass", i.owner)
			i.owner.send("Next round is " + roundString)
			break

		case 4:
			if rand.Int63()&(1<<62) == 0 {
				for cnt := 0; cnt < 2; cnt++ {
					if i.owner.HP < i.match.maxHP {
						i.owner.HP++
					}
				}
			} else {
				i.owner.HP--
				i.match.announceHP()
				i.match.checkStatus()
			}
			i.match.sendMessage("I used an expired medicine", i.owner)
			i.match.announceHP()
			break

		case 5:
			if i.owner.HP < i.match.maxHP {
				i.owner.HP++
			}
			i.match.sendMessage("I used a pack of cigarettes", i.owner)
			i.match.announceHP()
			break

		case 6:
			i.match.gun.magazine[len(i.match.gun.magazine)-1] = !i.match.gun.magazine[len(i.match.gun.magazine)-1]
			i.match.sendMessage("I used an inverter", i.owner)
			break
		case 7:
			var otherPlayer *client
			if i.owner.isHost {
				otherPlayer = i.match.guest
			} else {
				otherPlayer = i.match.host
			}
			if param1 < len(otherPlayer.items) {
				i.owner.items = append(i.owner.items, otherPlayer.items[param1])
				otherPlayer.items = append(otherPlayer.items[:param1], otherPlayer.items[param1:]...)
				itemName := otherPlayer.items[param1].name()
				if itemName[0] == 'a' || itemName[0] == 'e' || itemName[0] == 'i' || itemName[0] == 'o' || itemName[0] == 'u' || itemName[0] == 'y' {
					itemName = " an " + itemName
				} else {
					itemName = " a " + itemName
				}
				i.match.sendMessage("I stole from "+otherPlayer.Username+"("+strconv.Itoa(otherPlayer.ID)+")"+itemName, i.owner)
			} else {
				i.owner.send("This requires another parameter")
				successfully = false
			}
			break
		}
	} else {
		i.owner.send("It is not your turn")
	}
	if successfully {
		for cnt, item := range i.owner.items {
			if item.kind == i.kind {
				i.owner.items = append(i.owner.items[:cnt], i.owner.items[cnt+1:]...)
				break
			}
		}
		i.match.announceItems()
	}
}