using Kryz.CharacterStats.Examples;
using Photon.Pun;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AbilityKeyBinder : MonoBehaviour
{
    [Header("Listeners:")]
    [SerializeField] private GameEventListener onLocalPlayerFainted;
    [SerializeField] private GameEventListener onLocalPlayerPermaDeath;
    [SerializeField] private GameEventListener onLocalPlayerRevived;
    [Space]
    [SerializeField] private BaseAbility ability;
    [SerializeField] private GameKey key;
    [SerializeField] private CastingStateController castingStateController;
    [SerializeField] private GameEvent_AbilityKeyBinder onAbilityKeyBinderSpawned;

    private PhotonView user;
    private Taggable userTag;
    private Mana mana;
    private Health health;
    public Health Health => health;
    public Mana Mana => mana;

    public BaseAbility Ability => ability;
    public GameKey GameKey => key;

    Coroutine currentChanneling;
    NetworkedChanneling networkedChanneling;
    AbilityBindInstance abilityBindInstance;
    AbilityCooldownTracker cooldownTracker;

    bool isDead = false;

    float finalHealthCost;
    float finalManaCost;

    private void Awake()
    {
        user = GetComponentInParent<PhotonView>();
        userTag = GetComponentInParent<Taggable>();
        mana = GetComponentInParent<Mana>();
        health = GetComponentInParent<Health>();
        cooldownTracker = user.GetComponentInChildren<AbilityCooldownTracker>();
    }

    private void Start()
    {
        if (!user.IsMine)
        {
            this.enabled = false;
            return;
        }

        onLocalPlayerFainted.Response.AddListener(() =>
        {
            isDead = true;

        });
        onLocalPlayerPermaDeath.Response.AddListener(() =>
        {
            isDead = true;

        });
        onLocalPlayerRevived.Response.AddListener(() =>
        {
            isDead = false;

        });

        onAbilityKeyBinderSpawned.Raise(this);
    }
    // Update is called once per frame
    void Update()
    {
        if (isDead) return;

        if (Input.GetKeyDown(key.keyCode))
        {
            if (abilityBindInstance != null)
                abilityBindInstance.pressed.SetActive(true);
            if (IsAbilityOffCooldown() && mana.EnoughMana(ability.GetFinalManaCost(mana)) && health.EnoughHealth(ability.GetFinalHealthCost(health))) 
            {
                if (ability is ChanneledAbility)
                {
                    castingStateController.RequestAbilityChannel(ability, () =>
                    {
                        networkedChanneling = ((ChanneledAbility)ability).ExecuteChannel(user, userTag, ref currentChanneling);
                        if (ability.cooldown > 0)
                        {
                            cooldownTracker.StartAbilityCooldown(ability);
                            abilityBindInstance.StartCooldownTrackerUI();
                        }
                    });
                }
                else
                {
                    castingStateController.RequestAbilityCast(ability, () =>
                    {
                        ability.Execute(user, userTag);
                        if (ability.cooldown > 0)
                        {
                            cooldownTracker.StartAbilityCooldown(ability);
                            abilityBindInstance.StartCooldownTrackerUI();
                        }
                    });
                }
            }
        }
        if (Input.GetKeyUp(key.keyCode))
        {
            if (abilityBindInstance != null)
                abilityBindInstance.pressed.SetActive(false);
            if (currentChanneling != null)
            {

                if (networkedChanneling != null)
                {
                    networkedChanneling.StopCoroutine(currentChanneling);
                }
                else
                {
                    StopCoroutine(currentChanneling);
                }
                castingStateController.ResetChannelingCast();
                CastBarHandler.Instance.CancelChannelingOnButtonReleased();
            }

            if (networkedChanneling != null)
            {
                networkedChanneling.channeling = false;
                networkedChanneling.DisableVisuals();
            }
        }
    }

    public void SetupAbilityBindInstance(AbilityBindInstance abilityBindInstance)
    {
        this.abilityBindInstance = abilityBindInstance;
        mana.onResourceChanged.AddListener(OnManaChanged);
        health.onResourceChanged.AddListener(OnHealthChanged);
    }

    public void OnManaChanged(float currentMana)
    {
        finalManaCost = ability.GetFinalManaCost(mana);
        abilityBindInstance.manaCost.text = finalManaCost.ToString("F0");
        abilityBindInstance.noMana.SetActive(!mana.EnoughMana(finalManaCost));
    }
    public void OnHealthChanged(float currentHealth)
    {
        finalHealthCost = ability.GetFinalHealthCost(health);
        abilityBindInstance.healthCost.text = finalHealthCost.ToString("F0");
        abilityBindInstance.healthCostGO.SetActive(finalHealthCost > 0);
        abilityBindInstance.noHealth.SetActive(!health.EnoughHealth(finalHealthCost));
    }

    public bool IsAbilityOffCooldown()
    {
        return ability.cooldown <= 0 || !cooldownTracker.OnCooldown(ability);
    }
    public void BindAbility(BaseAbility ability)
    {
        this.ability = ability;
        onAbilityKeyBinderSpawned.Raise(this);
    }
}