package hero

import (
	"math/rand"

	"github.com/denisovdennis/autohero/internal/constants"
	"github.com/denisovdennis/autohero/internal/model"
	"github.com/denisovdennis/autohero/internal/tuning"
)

func UsePotionOnHero(hero *model.Hero, force bool) int {
	if force != true {
		if hero == nil || hero.Potions <= 0 || hero.HP <= 0 {
			return 0
		}
		hpThresh := int(float64(hero.MaxHP) * constants.OfflineAutoPotionHPThresh)
		if hero.HP >= hpThresh {
			return 0
		}
		if rand.Float64() >= (1.0 - (1.0 - float64(hero.HP / hpThresh))) / 1.2 + constants.OfflineAutoPotionChance {
			return 0
		}
	}

	hero.Potions--
	healAmount := int(float64(hero.MaxHP) * tuning.Get().PotionHealPercent)
	if healAmount < 1 {
		healAmount = 1
	}
	hero.HP += healAmount
	if hero.HP > hero.MaxHP {
		hero.HP = hero.MaxHP
	}
	return healAmount;
}