using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using UnityEngine.UI;
using SiegeSong;

namespace SiegeSong
{
    public class Technique : MonoBehaviour
    {
        public int ID;
        public Equipable Weapon;
        public string FriendlyName;
        public EquipableArea EquipSlots;
        public HitBox[] HitBoxes;
        public Animator CharacterAnimator;
        public UnityEvent OnUse;
        public float UseEffectDelay = 0.3f;
        public int StaminaCost;
        public int MagicCost;
        public bool Increment;

        public AudioClip[] UseSounds;

        private string useLeftAnimatorField = "UseLeftEquipment";
        private string useAbilityAnimatorField = "UseAbilityEquipment";
        private string useRightAnimatorField = "UseRightEquipment";

        bool delayTimerActive;
        float useEffectDelayTimer;


        void Start()
        {

        }

        void Update()
        {
            if (delayTimerActive)
            {
                useEffectDelayTimer += Time.deltaTime;
                if (useEffectDelayTimer > UseEffectDelay)
                {
                    var soundIndex = Random.Range(0, UseSounds.Length - 1);
                    if (UseSounds.Length < soundIndex)
                    {
                        Weapon.Actor.AudioSource.clip = UseSounds[soundIndex];
                        Weapon.Actor.AudioSource.Play();
                    }
                    if (OnUse != null)
                        OnUse.Invoke();
                    delayTimerActive = false;
                    useEffectDelayTimer = 0;
                    foreach (var hitbox in HitBoxes)
                        hitbox.Active = true;
                }
            }
        }

        public void Use()
        {
                if ((StaminaCost != 0  && Weapon.Actor.Stats.Stamina > StaminaCost)
                   || (MagicCost != 0  && Weapon.Actor.Stats.Magic > MagicCost)
                   || (MagicCost == 0  && StaminaCost == 0))
                {
                    switch (EquipSlots)
                    {
                        case EquipableArea.Left:
                            CharacterAnimator.SetTrigger(useLeftAnimatorField);
                            break;
                        case EquipableArea.Ability:
                            CharacterAnimator.SetTrigger(useAbilityAnimatorField);
                            break;
                        case EquipableArea.Right:
                            CharacterAnimator.SetTrigger(useRightAnimatorField);
                            break;
                    }
                    Weapon.Actor.ExpendStamina(StaminaCost, Increment);
                    Weapon.Actor.ExpendStamina(MagicCost, Increment);
                    delayTimerActive = true;
            }
        }
    }
}