using TMPro;
using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement;
using UnityEditorInternal;
using System.IO;

public class playerScript : MonoBehaviour
{
    public float speed = 5f;
    private Rigidbody2D body;
    private Vector2 move;
    private SpriteRenderer spriteRenderer;
    private Vector2 mousePosition;
    public int keysCollected = 0;
    public TextMeshProUGUI keysText;
    private bool canMove = true;
    public float movementDelay = 0.75f;

    public Countdown countdownscript; 

    /// <summary>
    /// This code checks if all the variables are assigned to the right components. 
    /// </summary>
    void Start()
    {
        body = GetComponent<Rigidbody2D>();
        spriteRenderer = GetComponent<SpriteRenderer>();
        StartCoroutine(DelayMovement());
    }

    /// <summary>
    /// This code controls the movement of the player including checking if the player is allowed to move or not. 
    /// </summary>
    void Update()
    {

        if (!canMove) return;

        mousePosition = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        Vector2 aimDirection = mousePosition - (Vector2)transform.position;
        float aimAngle = Mathf.Atan2(aimDirection.y, aimDirection.x) * Mathf.Rad2Deg;
        body.rotation = aimAngle;
        Vector2 movementDirection = new Vector2(Mathf.Cos(aimAngle * Mathf.Deg2Rad), Mathf.Sin(aimAngle * Mathf.Deg2Rad));

        movementDirection.Normalize();
        body.velocity = movementDirection * speed;
        Lose_condition();
        Win_condition(); 
    }

    /// <summary>
    /// This code is for updating the keys text, It relates to the code below, When the player collides with the object tagged key,
    /// keys collected increases, and the text should display "Keys collected ... (number of keys collected) 
    /// </summary>
    public void UpdateKeysText()
    {
        keysCollected++;
        keysText.text = "Keys Collected: " + keysCollected;
    }

    /// <summary>
    /// This code is for collecting the keys, It just means if the player collides with a object with the tag "Key"
    /// update the key collected text, and destroy the key object. 
    /// </summary>
    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.CompareTag("key"))
        {
            UpdateKeysText();
            Destroy(other.gameObject);
        }
    }

    private IEnumerator DelayMovement()
    {
        canMove = false;
        yield return new WaitForSeconds(movementDelay); 
        canMove = true;
    }
     /// <summary>
     /// lose conditon, This code is to see if the player has less than 5 keys when the time has reached 0.
     /// If yes, Scene 1 will oad which is the starting position. 
     /// </summary>
    private void Lose_condition()
    {
        if (keysCollected < 5 && countdownscript.remainingTime < 0)
        {

            Debug.Log("Time out! Level Restarted");
            SceneManager.LoadScene(1);

        }
    }

    /// <summary>
    /// This code is for the win condition. This is for when the player has collected 5 keys under one minute.
    /// If the player has, It prints to the console saying the player has won, loading up scene 1 which is the starting position. 
    /// </summary>

    private void Win_condition()
    {
        string path = Path.Combine(Application.dataPath, "../Data/highcore.text");
        File.WriteAllText(path, keysText.text);
        
        if (keysCollected == 5 && countdownscript.remainingTime > 0)
        {
            Debug.Log("You win! Level Restarted");
            SceneManager.LoadScene(1);

        }
    }


}