using SHADE;
using SHADE_Scripting.Audio;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SHADE_Scripting.Gameplay.AIBehaviour.AIRework.States
{
    public class PatrolState: AIBaseState
    {

        Random rand;
        Vector3 lastFramePos;

        float stuckTimer;
        bool run = true;

        float footStepInterval = 12.0f / 30.0f;
        float footStepTimer = 0.0f;

        public PatrolState(StateMachine machine) : base(machine)
        {
            stateName = "Patrol";
            rand = new Random(); 
        }

        public override void OnEnter()
        {
            Navigation nav = machine.GetComponent<Navigation>();
            Transform transform = machine.GetComponent<Transform>();
            if (nav &&  transform)
            {

                int index = rand.Next(0, ai.patrolPointPool.Count() - 1);
                Transform dest = ai.patrolPointPool.ElementAt(index);
                if (dest)
                {
                    nav.MoveTo(dest.GlobalPosition);
                    
                }

                lastFramePos = transform.GlobalPosition;

                stuckTimer = 0.0f;
                
            }

            
            animator.Play(ai.walkingAnim);
            AudioHandler.audioClipHandlers["HO_footsteps"].Play();
            footStepTimer = footStepInterval;
            

            RotateToVelocity r = machine.GetScript<RotateToVelocity>();
            if(r)
            {
                r.rotateToPlayerLastKnown = false;
            }

        }

        public override void OnExit()
        {
            animator.Stop();
        }

        public override void update()
        {
            Navigation nav = machine.GetComponent<Navigation>();
            Transform transform = machine.GetComponent<Transform>();
            RigidBody rigid = machine.GetComponent<RigidBody>();
            if(nav && transform && rigid)
            {
                rigid.LinearVelocity = nav.GetForward() * ai.patrolSpeed;
                Vector3 d = lastFramePos - transform.GlobalPosition;
                if (d.GetSqrMagnitude() < 0.001f)
                {
                    //stuckTimer += Time.DeltaTimeF;
                }


                if (nav.ReachedTarget())
                {
                    machine.SetState(typeof(IdleState));
                }
                lastFramePos = transform.GlobalPosition;

            }
            if(stuckTimer >= 0.5f)
            {
                machine.SetState(typeof(IdleState));
            }

            if (ai.ShouldTransitAlert())
            {
                machine.SetState(typeof(AlertState));
            }
            footStepTimer -= Time.DeltaTimeF;
            if(footStepTimer <= 0.0f)
            {
                footStepTimer += footStepInterval;
                AudioHandler.audioClipHandlers["HO_footsteps"].Play();
            }

        }

        public override void fixedUpdate()
        {
        }


    }
}