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

public class EnemyMovement : MonoBehaviour
{
    public float speed = 10f;

    public int swordDamage = 1;

    private Transform target;
    private Transform[] waypoints;
    private int wavepointIndex = 0;

    private bool isClimbing;

    private bool isPushing;

    private bool isEnemyMoevementSocketed;

    private float triggerRadius = 1f;

    private float climbingRotation;

    private Animator enemyAnimator = null;

    private Socket socket;
    public NavMeshAgent playerAgent;
    private Vector3 playerPos;

    private PlayerManagement pm;


    private void Awake() 
    {
        pm = GameObject.Find("/OmniCharacterController").GetComponent<PlayerManagement>();
    }
    public void SetupWaypoints(GameObject path)
    {
        Transform t = path.transform;
        waypoints = new Transform[t.childCount];
        for (int i = 0; i < waypoints.Length; i++)
        {
            waypoints[i] = t.GetChild(i);
        }

        target = waypoints[0];
    }

    private void RandomTargetModifier()
    {
        float xRandom = UnityEngine.Random.Range(0f,3f);
        float zRandom = UnityEngine.Random.Range(0f,3f);
        xRandom = target.position.x + xRandom;
        zRandom = target.position.z + zRandom;

        Vector3 waypointTemp = new Vector3(xRandom,target.position.y,zRandom);
        waypoints[wavepointIndex].position = waypointTemp;
        target = waypoints[wavepointIndex];
    }

    void Update() 
    {
        if (waypoints == null || waypoints.Length == 0)
        {
            return;
        }
        else if (wavepointIndex >= waypoints.Length)
        {
            if (isClimbing)
            {
                setIsClimbing(false);
            }
            NavMeshSetup();
        }

        else if (isEnemyMoevementSocketed)
        {
            if(Vector3.Distance(transform.position, socket.transform.position) <= 0.4f)
            {
                transform.position = socket.transform.position;
                transform.rotation = socket.transform.rotation;
                enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/Push/PushController") as RuntimeAnimatorController;
                isPushing = true;
            }
            else
            {
                Vector3 dir = socket.transform.position - transform.position;
                moveEnemy(dir);
            }  
            //transform.position = socket.transform.position;
        }
        else
        {
            Vector3 dir = target.position - transform.position;
            moveEnemy(dir);    
        }

    }

    void moveEnemy(Vector3 dir)
    {
        transform.Translate(dir.normalized * speed * Time.deltaTime, Space.World);
        if (isClimbing)
        {
            transform.rotation = Quaternion.Euler(40, climbingRotation, 0);
        }
        else
        {
            Quaternion toRotation = Quaternion.LookRotation(dir,Vector3.up);
            transform.rotation = Quaternion.Lerp(transform.rotation,toRotation, speed * Time.deltaTime);
        }
        
        if(Vector3.Distance(transform.position, target.position) <= 0.3f)
        {
            GetNextWaypoint();
        }
    }

    private void NavMeshSetup()
    {
        if (!playerAgent.enabled)
        {
            playerAgent.enabled = true;
        }

        NavmeshAgentMovement();
    }

    void GetNextWaypoint()
    {
        if(wavepointIndex >= waypoints.Length)
        {
            return;
        }
        if (wavepointIndex == 1 && isClimbing)
        {
            enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/FinishClimbingLadder/FinishClimbingLadderController") as RuntimeAnimatorController;
        }
        wavepointIndex++;
        target = waypoints[wavepointIndex];
        //RandomTargetModifier();
    }

    void NavmeshAgentMovement()
    {
        if (NearEnemy())
        {
            enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/SwordSlash/SwordSlashController") as RuntimeAnimatorController;
            pm.takeDamage(swordDamage);
        }
        else
        {
            enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/Walk/WalkController") as RuntimeAnimatorController;
            playerPos = GameObject.FindGameObjectWithTag("Player").transform.position;
            playerAgent.SetDestination(playerPos);
        }
    }

    public void SetEnemySocket(Socket socket)
    {
        isEnemyMoevementSocketed = true;
        this.socket = socket;
    }

    public void removeEnemySocket()
    {
        if (isEnemyMoevementSocketed)
        {
            isEnemyMoevementSocketed = false;
            isPushing = false;
            this.socket.removeEnemyGameobject();
            this.socket = null;
        }
    }

    public bool isEnemyMovementSocket(){
        return isEnemyMoevementSocketed;
    }
    public void SetWaypointsTransform(Transform[] waypointTarget)
    {
        this.waypoints = waypointTarget;
        wavepointIndex = 0;
        target = waypointTarget[0];
    }

    public void setIsClimbing(bool value)
    {
        this.isClimbing = value;
        if(isClimbing)
        {
            enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/ClimbingLadder/ClimbingController") as RuntimeAnimatorController;
        }
        else
        {
            enemyAnimator.runtimeAnimatorController = Resources.Load("Animations/Walk/WalkController") as RuntimeAnimatorController;
        }
    }

    public bool getIsClimbin()
    {
        return this.isClimbing;
    }

    public void setClimbingRotation(float value)
    {
        this.climbingRotation = value;
    }

    public void setEnemyAnimatior(Animator animator)
    {
        this.enemyAnimator = animator;
    }
    bool NearEnemy()
    {
        Collider[] hitColliders = Physics.OverlapSphere(this.transform.position, triggerRadius);

        foreach (var hitCollider in hitColliders)
        {
            if (hitCollider.transform.root.tag == "Player")
            {
                return true;
            }
        }

        return false;
    }

    public bool getIsPushing()
    {
        return this.isPushing;
    }
}