using SHADE;
using SHADE_Scripting;
using System;
using static PlayerController;
using static Item;

public class PickAndThrow : Script
{
  public Vector3 throwForce = new Vector3(100.0f, 200.0f, 100.0f);
  public Vector3 cameraArmOffSet = new Vector3(0.0f, 0.25f, 0.0f);
  public GameObject item { get; set; }
  public float delayTimer = 1.0f;
  public float aimingLength = 1.5f;

  private float timer;
  private PlayerController pc;
  private Transform itemTransform;
  private RigidBody itemRidigBody;
  private Collider itemCollider;
  private Item itemScript;
  private Transform raccoonHoldLocation;
  private ThirdPersonCamera tpc;
  private float lastXDir;
  private float lastZDir;
  private bool inRange = false;
  public bool throwItem = false;

  [Tooltip("Lenght of ray")]
  public float rayDistance = 1;

  protected override void awake()
  {
    pc = GetScript<PlayerController>();
    if(!pc)
      Debug.LogError("PLAYER CONTROLLER EMPTY");

    raccoonHoldLocation = GetComponentInChildren<Transform>();
    if (!raccoonHoldLocation)
      Debug.LogError("CHILD EMPTY");

    tpc = GetScriptInChildren<ThirdPersonCamera>();
    if(!tpc)
      Debug.LogError("TPC EMPTY");

    timer = delayTimer;
  }
  protected override void update()
  {

    if(timer <= delayTimer)
      timer += Time.DeltaTimeF;

    CalculateDir();
    CastRay();

    if (pc && itemRidigBody && itemTransform && itemCollider)
    {
      if (pc.holdItem)
      {
        itemTransform.LocalPosition = raccoonHoldLocation.GlobalPosition;
        itemTransform.LocalRotation = pc.tranform.LocalRotation;
        itemRidigBody.LinearVelocity = Vector3.Zero;
        itemRidigBody.AngularVelocity = Vector3.Zero;

        if (Input.GetMouseButtonDown(Input.MouseCode.LeftButton))
        {
          pc.isAiming = true;
          pc.camArm.ArmLength = aimingLength;
          pc.camArm.TargetOffset = cameraArmOffSet;
        }

        if (Input.GetMouseButtonUp(Input.MouseCode.LeftButton) && pc.isAiming)
        {
          Audio.PlaySFXOnce2D("event:/Raccoon/raccoon_throw");
          itemRidigBody.IsGravityEnabled = true;
          itemCollider.GetCollisionShape(0).IsTrigger = false;
          pc.isAiming = false;
          pc.camArm.TargetOffset = Vector3.Zero;
          if (tpc)
            pc.camArm.ArmLength = tpc.armLength;
          pc.holdItem = false;
          inRange = false;
          throwItem = true;
          timer = 0.0f;
        }

        if (Input.GetMouseButtonDown(Input.MouseCode.RightButton) && !pc.isAiming)
        {
          pc.holdItem = false;
          inRange = false;
          itemRidigBody.IsGravityEnabled = true;
          itemCollider.GetCollisionShape(0).IsTrigger = false;
          ResetItemObject();
        }

        if (Input.GetMouseButtonDown(Input.MouseCode.RightButton) && pc.isAiming)
        {
          pc.isAiming = false;
          pc.camArm.TargetOffset = Vector3.Zero;
          if (tpc)
            pc.camArm.ArmLength = tpc.armLength;
        }

      }
      else if (!pc.holdItem)
      {
        itemRidigBody.IsGravityEnabled = true;
        itemCollider.GetCollisionShape(0).IsTrigger = false;
      }
    }

    if (timer > delayTimer && pc && !pc.holdItem && inRange && Input.GetMouseButtonDown(Input.MouseCode.LeftButton))
    {
      if (pc.currentState == RaccoonStates.WALKING || pc.currentState == RaccoonStates.IDLE)
      {
        pc.holdItem = true;
        RetrieveItemComponets();
      }
    }
  }

  protected override void fixedUpdate()
  {
    if (throwItem && itemRidigBody && pc)
    {
      if (itemScript)
      {
        Vector3 vec = new Vector3(throwForce.x * lastXDir, throwForce.y, throwForce.z * lastZDir);
        if (itemScript.currCategory == ItemCategory.LIGHT)
          itemRidigBody.AddForce(vec * 0.2f);
        if (itemScript.currCategory == ItemCategory.MEDIUM)
          itemRidigBody.AddForce(vec * 0.75f);
        if (itemScript.currCategory == ItemCategory.HEAVY)
          itemRidigBody.AddForce(vec);
      }
      itemRidigBody.LinearVelocity += pc.rb.LinearVelocity;
      throwItem = false;
      ResetItemObject();
    }
  }

  private void ResetItemObject()
  {
    itemRidigBody = null;
    itemTransform = null;
    itemCollider = null;
    itemScript = null;
    item = new GameObject();
  }

  private void RetrieveItemComponets()
  {
    //get the transform of the given item
    if (item.GetScript<Item>() && !itemTransform && !itemRidigBody)
    {
      itemRidigBody = item.GetComponent<RigidBody>();
      if (!itemRidigBody)
        Debug.Log("Item rb EMPTY");
      else 
      {
        itemRidigBody.IsGravityEnabled = false;
      }

      itemTransform = item.GetComponent<Transform>();
      if (!itemTransform)
        Debug.Log("Item transform EMPTY");
      else
      {
        itemTransform.LocalEulerAngles = Vector3.Zero;
      }

      itemCollider = item.GetComponent<Collider>();
      if (!itemCollider)
        Debug.Log("Item collider EMPTY");
      else
      {
        itemCollider.GetCollisionShape(0).IsTrigger = true;
      }

      itemScript = item.GetScript<Item>();
      if(!itemScript)
        Debug.Log("Item script EMPTY");
    }
  }

  private void CalculateDir()
  {
    if (pc && pc.cam)
    {
      Vector3 camerAixs = pc.cam.GetForward();
      camerAixs.y = 0;
      camerAixs.Normalise();
      lastXDir = camerAixs.x;
      lastZDir = camerAixs.z;
    }
  }

  private void CastRay()
  {
    if (pc != null)
    {
      Vector3 dirNor = pc.tranform.Forward;
      Vector3 playerRayPos = pc.tranform.GlobalPosition;
      playerRayPos.y += 0.05f;
      dirNor.Normalise();
      RaycastHit ray1 = Physics.Raycast(new Ray(playerRayPos, Vector3.RotateY(dirNor, SHADE.Math.DegreesToRadians(22.5f))), rayDistance);
      RaycastHit ray2 = Physics.Raycast(new Ray(playerRayPos, Vector3.RotateY(dirNor, SHADE.Math.DegreesToRadians(-22.5f))), rayDistance);
      RaycastHit ray3 = Physics.Raycast(new Ray(playerRayPos, dirNor), rayDistance * 0.75f);
      inRange = CheckForItem(ray1) || CheckForItem(ray2) || CheckForItem(ray3);
    }
  }

  private bool CheckForItem(RaycastHit ray)
  {
    if (ray.Hit)
    {
      if (ray.Other.Value.GetScript<Item>() && !pc.holdItem)
      {
        item = ray.Other.Value;
        return true;
      }
      else
        return false;
    }
    return false;

  }


}