using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;

public class DialogueWindow : MonoBehaviour
{
    public const float kMaxTextTime = 0.1f;
    public static int TextSpeed = 2;

    public TMP_Text Text;
    public string CurrentText;

    public GameObject Cursor;

    Animator Anim;

    protected enum TextStateType
    {
        None,
        Writing,
        Waiting
    }

    TextStateType TextState;

    private void Start()
    {
        Anim = GetComponent<Animator>();
    }

    public void Show(string dialogue)
    {
        Anim.SetBool("Open", true);

        CurrentText = dialogue;
    }

    public void Close()
    {
        Anim.SetBool("Open", false);
    }

    public void OnDialogueOpen()
    {
        StartCoroutine(DisplayText());
    }

    public void OnDialogueClosed()
    {
        StopAllCoroutines();
        Text.text = "";
        TextState = TextStateType.None;

        Cursor.SetActive(false);
    }

    protected IEnumerator DisplayText()
    {
        Text.text = "";
        TextState = TextStateType.Writing;
        Cursor.SetActive(false);

        string originalText = CurrentText;
        string displayedText = "";
        int alphaIndex = 0;

        foreach (char c in CurrentText.ToCharArray())
        {
            alphaIndex++;
            Text.text = originalText;
            displayedText = Text.text.Insert(alphaIndex, "<color=#00000000>");
            Text.text = displayedText;

            yield return new WaitForSecondsRealtime(kMaxTextTime / TextSpeed);
        }

        TextState = TextStateType.Waiting;
        //Cursor.SetActive(true);

        yield return null;
    }
}