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

public class TokenBehaviour : MonoBehaviour
{
    private Vector3 mOffset;
    private Vector3 startingPosition;
    private Vector3 slotPosition;
    private float mZCoord;
    private bool triggered = false;
    private Rigidbody rBody;
    private Collider TriggerVolume;
    private bool initTrigger = true;
    public Text countText;
    public Text winText;

    void Start()
    {
        rBody = GetComponent<Rigidbody>();
        SetCountText();
        winText.text = "";
    }

    private void OnMouseDown()
    {
        startingPosition = transform.position;
        mZCoord = Camera.main.WorldToScreenPoint(gameObject.transform.position).z;
        mOffset = gameObject.transform.position - GetMouseWorldPos();
    }

    private void OnMouseUp()
    {
        if (triggered)
        {
            //Debug.Log("SlotPos1 : " + slotPosition.ToString("F3"));
            transform.position = slotPosition;
            rBody.velocity = Vector3.zero;
            GameValue.numberOfPegsLeft--;
            GameObject.Find(TriggerVolume.gameObject.name).GetComponent<PegSlot>().freeSlot = true;
            SetCountText();
        }
        else
        {
            transform.position = startingPosition;
            rBody.velocity = Vector3.zero;
        }
    }

    private Vector3 GetMouseWorldPos()
    {
        Vector3 mousePoint = Input.mousePosition;
        mousePoint.z = mZCoord;
        return Camera.main.ScreenToWorldPoint(mousePoint);
    }

    private void OnMouseDrag()
    {
        transform.position = GetMouseWorldPos() + mOffset;
        transform.position = new Vector3(transform.position.x, 6, transform.position.z);
    }

    void OnTriggerEnter(Collider other)//other.GetComponent<PegSlot>().object.name
    {
        if (other.gameObject.CompareTag("Trigger Volume") && GameObject.Find(other.gameObject.name).GetComponent<PegSlot>().freeSlot)
        {
            triggered = true;
            slotPosition = other.gameObject.transform.position;
        }
    }

    void OnTriggerExit(Collider other)
    {
        if(initTrigger && other.gameObject.CompareTag("Trigger Volume"))
        {
            TriggerVolume = other;
            initTrigger = false;
            //Debug.Log("Exited initTrigger");
        }
        else if (other.gameObject.CompareTag("Trigger Volume"))
        {
            triggered = false;
        }
        else if (other.gameObject.CompareTag("BoundingArea") && !GameValue.firstRoundDone)
        {
            GameValue.numberOfPegsLeft--;
            GameObject.Find(TriggerVolume.gameObject.name).GetComponent<PegSlot>().freeSlot = true;
            GameValue.firstRoundDone = true;
            gameObject.SetActive(false);
            SetCountText();
        }
    }

    void SetCountText()
    {
        countText.text = "Count : " + GameValue.numberOfPegsLeft.ToString();
        if (GameValue.numberOfPegsLeft == 0)
        {
            winText.text = "You win!";
        }
    }
}