package main

import (
	"math/rand"
	"time"
)

//Battle allow two character types to battle each other
func Battle(hero, enemy Character) {
	speed := time.Second * 1

	heroDamage := hero.Damage + hero.Weapons[hero.Gear.Weapon.Name].Damage
	enemyDamage := enemy.Damage + enemy.Weapons[enemy.Gear.Weapon.Name].Damage

	damage := 0

	for {
		heroInitiative := rand.Intn(7) + hero.Initiative
		enemyInitiative := rand.Intn(7) + enemy.Initiative

		if heroInitiative == enemyInitiative {
			if flipCoin() == "heads" {
				heroInitiative-- //does the same as -= 1
			} else {
				enemyInitiative--
			}
		}
		printCombatantStats(&hero, &enemy, heroInitiative, enemyInitiative)

		if heroInitiative > enemyInitiative {
			damage = rand.Intn(heroDamage)
			enemy.Health -= damage
			print(enemy.Name, " was hit for ", damage, " damage!\n")

			if enemy.Health > 0 {
				damage = rand.Intn(enemyDamage)
				hero.Health -= damage
				print(hero.Name, " was hit for ", damage, " damage!\n")
			}
		} else {
			damage = rand.Intn(enemyDamage)
			hero.Health -= damage
			print(hero.Name, " was hit for ", damage, " damage!\n")

			if hero.Health > 0 {
				damage = rand.Intn(heroDamage)
				enemy.Health -= damage
				print(enemy.Name, " was hit for ", damage, " damage!\n")
			}
		}

		time.Sleep(speed)

		if enemy.Health <= 0 || hero.Health <= 0 {
			ClearScreen()
			printCombatantStats(&hero, &enemy, heroInitiative, enemyInitiative)

			print("It's over\n")
			if enemy.Health <= 0 {
				print("The ", enemy.Name, " is dead!\n")
			} else {
				print("Rest in peace ", hero.Name, "\n")
			}

			break
		}
		ClearScreen()

	}
}

func flipCoin() string {
	if rand.Intn(10) < 5 {
		return "heads"
	} //no need for 'else', this format is the Go style
	return "tails"

}

func printCombatantStats(hero, enemy *Character, heroInitiative, enemyInitiative int) {

	print("Hero: ", hero.Name, "\t", "Enemy: ", enemy.Name, "\n")
	print("Health: ", hero.Health, "\t", "Health: ", enemy.Health, "\n")
	print("Initiative: ", heroInitiative, "\t", "Initiative: ", enemyInitiative, "\n")
	print("Weapon: ", hero.Gear.Weapon.Name, "\t", "Weapon: ", enemy.Gear.Weapon.Name, "\n\n")
}