using System.Collections;
using System.Collections.Generic;
using UnityEngine;

//Thomas09

public class MeleeController : MonoBehaviour
{
    #region Variables
    private float aimVelocity;
    private Weapon weapon;
    private Animator anim;
    private ParticleSystem swordSwingPS;
    private Camera playerCamera;
    private LayerMask whatCanBeHitBySword;


    private int SWING = Animator.StringToHash("Swing");
    private int SWING2 = Animator.StringToHash("Swing2");

    private bool currentlySwinging;

    private float timer = 0;
    private bool canSwing = false;

    #endregion

    private void Awake()
    {
        weapon = OnDemandLoader.Load<Weapon>("config/" + int.Parse(this.gameObject.name));
        anim = GetComponent<Animator>();
        swordSwingPS = transform.Find("SM_Wep_Sword_01/Vfx_SwordTrails/Trails")?.GetComponent<ParticleSystem>();
        playerCamera = Player.Instance.transform.Find("FirstPersonCamera_Holder").GetComponentInChildren<Camera>();
        whatCanBeHitBySword = LayerMask.GetMask("Enemy");
    }

    private void OnEnable()
    {
        //if sniper was last weapon used, and you switched to a none sniper, disable the sniper scope overlay.
        CrosshairManager.Instance.SetSniperCrosshairAlpha(0.0f);
        StartCoroutine(Player.Instance.EquipWeaponCoroutine(weapon));
        Player.Instance.GetInputHandler().AimKeyPressed = false;
        Player.Instance.GetInputHandler().ToggleAiming = false;
        //Debug.Log(weapon.meleeHitFlag);
    }
    void Update()
    {
        //melee weapons should NOT be allowed to aim. So if the players FOV is different from the standard when you switch to a melee weapon, lerp it back down to its default value.
        if(playerCamera.fieldOfView != weapon.normalFOV)
        {
            playerCamera.fieldOfView = Mathf.SmoothDamp(playerCamera.fieldOfView, weapon.normalFOV, ref aimVelocity, 0.1f);
        }

        if (Player.Instance.updatePlayer)
        {
            CrosshairManager.Instance.SetDynamicCrossHair(0, 0, 0, 0, Player.Instance, weapon.reticletype);
            RunState();
            if(!canSwing)
            {
                timer += Time.deltaTime;
                if(timer >= weapon.SWING_COOLDOWN)
                {
                    canSwing = true;
                    timer = 0;
                    ResetTriggers();
                }
            }
            else
            {
                SwingState();
            }
        }
    }

    private void SwingState()
    { 
        if (Player.Instance.GetInputHandler().FireKeyPressed)
        {
            Player.Instance.GetInputHandler().FireKeyPressed = false;
            canSwing = false;
            int swingState = Random.Range(0, 2);
            switch (swingState)
            {
                case 0:
                    anim.SetTrigger(SWING);
                    break;
                case 1:
                    anim.SetTrigger(SWING2);
                    break;
            }

            PacketManager.sendChatMessage("/meleeSwing");
        }
    }
    private void RunState()
    {
        anim.SetBool("Run", Player.Instance.CanPlayRunningEvents());
    }

    private void HitEnemy() //used in animation event
    {
        RaycastHit hit;
        int npcId = -1;
        int hitFlag = -1;
        if (Physics.Raycast(playerCamera.transform.position, playerCamera.transform.forward, out hit,weapon.raycastLength, whatCanBeHitBySword))
        {
            if (hit.transform.root.TryGetComponent(out NPC npc))
            {
                PlayHitVFX();
                hitFlag = Player.Instance.GetHitFlag(hit.transform.tag);
                float calculatedDamage = Player.Instance.CalculateWeaponDamage(Player.Instance.transform.position, hit.transform.root.position, weapon.maxDamage, weapon.effectiveRange, hitFlag);
                npcId = npc.GetID();
                Player.Instance.ApplyDamage(hit, npcId, calculatedDamage, hitFlag);
            }
        }
        //Debug.Log($"Hit NPC WITH SWORD! Hit flag: {hitFlag} ID: {npcId}");
        PacketManager.sendMeleeAttack(hitFlag, npcId);
    }

    private void PlayHitVFX()
    {
        float randPitch = Random.Range(0.85f, 1.25f);
        int randClip = Random.Range(0, 3);
        if (randClip == 0) { AudioManager.Instance.playSound("Hit_Enemy", randPitch); }
        else if (randClip == 1) { AudioManager.Instance.playSound("Hit_Enemy2", randPitch); }
        else if (randClip == 2) { AudioManager.Instance.playSound("Hit_Enemy3", randPitch); }
    }

    private void PlaySwingSound() //used in animation event
    {
        string sound = ItemDef.GetInstance().getFireSound(int.Parse(gameObject.name));
        AudioManager.Instance.playSound(sound);
        if(swordSwingPS != null) swordSwingPS.Play();
    }

    private void ResetTriggers()
    {
        anim.ResetTrigger(SWING);
        anim.ResetTrigger(SWING2);
    }

}