using System.Collections;
using System.Collections.Generic;
using System.Threading.Tasks;
using TMPro;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using UnityEngine.UI;

public class TutorialScreen : MonoBehaviour
{
    public bool FreezeTime=false;
    public Transform messageParent;
    public Button btn_next;
    public Button[] additional_next_buttons;
    public int delayBeforeAppear;
    public bool hideNextButtonOnStart = true;
    public UnityEvent OnNextClicked;

    Dictionary<TMP_Text, string> messages;

    void Awake()
    {
        btn_next.onClick.AddListener(OnNextButton);
        foreach (Button btn in additional_next_buttons)
        {
            btn.onClick.AddListener(OnNextButton);
        }

        EventTrigger.Entry entry = new EventTrigger.Entry();
        entry.eventID = EventTriggerType.PointerDown;
        entry.callback.AddListener((eventData) => { SkipText(); });

        GetComponent<EventTrigger>().triggers.Add(entry);

    }

    public void Show()
    {
        if(FreezeTime){
            Time.timeScale = 0;
        }
        Debug.Log($"is GO null? :{gameObject == null}");
        gameObject.SetActive(true);
        ShowTexts();
    }
    bool textSkipped = false;
    void ShowTexts()
    {
        StartCoroutine(showTexts());
    }

    IEnumerator showTexts(){
        
        if (hideNextButtonOnStart) { btn_next.gameObject.SetActive(false); }
        int typewriteDelay = 0;
        if (messages == null)
        {
            messages = new Dictionary<TMP_Text, string>();
            TMP_Text[] texts = messageParent.GetComponentsInChildren<TMP_Text>();
            foreach (TMP_Text text in texts)
            {
                messages.Add(text, text.text.Replace("{Player}", DBmanager.username ?? "Dev"));
                Debug.Log(text.text);
                
                text.text = "";
            }
        }
        TMP_Text lastTxt = null;
        foreach (KeyValuePair<TMP_Text, string> message in messages)
        {
            message.Key.text = "";
            Debug.Log(message.Value);
            for (int i = 0; i < message.Value.Length; i++)
            {
                message.Key.text += message.Value.ToCharArray()[i];
                if (typewriteDelay < 4)
                {
                    typewriteDelay++;
                }
                else
                {
                    AudioManager.instnace.TypeWriter();
                    typewriteDelay = 0;
                }
                if(!textSkipped){
                    yield return new WaitForSecondsRealtime(0.02f);
                }
            }
                    yield return new WaitForSecondsRealtime(0.05f);
            
            lastTxt = message.Key;
        }

        textSkipped=false;
        btn_next.gameObject.SetActive(true);

                            yield return new WaitForSecondsRealtime(0.25f);

        lastTxt.text += " ";
    }

    void SkipText()
    {
        textSkipped=true;
    }

    public void Hide()
    {
        gameObject.SetActive(false);
    }

    public void OnNextButton()
    {
        if(FreezeTime){
            Time.timeScale = 1;
        }
        OnNextClicked.Invoke();
        Debug.Log("Next button clicked");
        TutorialManager.NextClicked();
        AudioManager.instnace.UIClick();
    }
}