using System.Collections;
using TMPro;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class DialogueSystem : MonoBehaviour
{
    [Header("UI Elements")]
    public TMP_Text dialogueText;
    public GameObject dialoguePanel;

    [Header("Dialogue Settings")]
    public string[] predefinedDialogue;
    public float characterDisplaySpeed = 0.05f; 

    private bool isTyping = false; 
    private bool skipTyping = false; 
    private int currentLineIndex = 0; 


    private void Start()
    {
        StartPredefinedDialogue();
    }
    private void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space) || Input.GetMouseButtonDown(0))
        {
            if (isTyping)
            {
                skipTyping = true; 
            }
            else
            {
                DisplayNextLine();
            }
        }
    }

    public void StartPredefinedDialogue()
    {
        if (predefinedDialogue.Length > 0)
        {
            dialoguePanel.SetActive(true); 
            currentLineIndex = 0;
            StartCoroutine(TypeLine(predefinedDialogue[currentLineIndex]));
        }
    }

    public void StartCustomDialogue(string[] customDialogue)
    {
        if (customDialogue.Length > 0)
        {
            dialoguePanel.SetActive(true);
            currentLineIndex = 0;
            predefinedDialogue = customDialogue; 
            StartCoroutine(TypeLine(predefinedDialogue[currentLineIndex]));
        }
    }

    private IEnumerator TypeLine(string line)
    {
        isTyping = true;
        dialogueText.text = "";
        foreach (char c in line)
        {
            if (skipTyping)
            {
                dialogueText.text = line; 
                break;
            }

            dialogueText.text += c;
            yield return new WaitForSeconds(characterDisplaySpeed);
        }

        isTyping = false;
        skipTyping = false;
    }

    private void DisplayNextLine()
    {
        currentLineIndex++;
        if (currentLineIndex < predefinedDialogue.Length)
        {
            StartCoroutine(TypeLine(predefinedDialogue[currentLineIndex]));
        }
        else
        {
            EndDialogue();
        }
    }

    private void EndDialogue()
    {
        dialoguePanel.SetActive(false); 
        dialogueText.text = "";

        SceneManager.LoadScene("Game");
    }
}