using System;
using System.IO;
using TMPro;
using UnityEngine;

public class DialogueManager : MonoBehaviour
{
	#region Statication

	public static DialogueManager instance;

	private void Awake()
	{
		if (instance != null && instance != this)
		{
			Destroy(gameObject);
			return;
		}
		instance = this;
	}

	#endregion

	[Header("Dialogue Script")]
	[SerializeField] private DialogueScript currentDialogueScript;
	private int textProgress;
	public string[] scriptLines;
	[Header("UI")] 
	public GameObject uiCanvas;
	public TextMeshProUGUI nameText;
	public TextMeshProUGUI dialogueText;

	private void Start()
	{
		StartDialogue(currentDialogueScript);
	}

	public void StartDialogue(DialogueScript scriptToShow)
	{
		uiCanvas.SetActive(true);
		currentDialogueScript = scriptToShow;
		scriptLines = currentDialogueScript.script.text.Split("\n");
		UpdateDialogue();
	}

	private void ContinueDialogue()
	{
		textProgress++;
		UpdateDialogue();
	}

	private void UpdateDialogue()
	{
		string[] words = scriptLines[textProgress].Split(" ");
		switch (words[0].ToUpper())
		{
			case "END":
				EndDialogue();
				break;
			case "TEXT":
				foreach (DialogueCharacter character in currentDialogueScript.characters)
				{
					if (string.Equals(character.name, words[1], StringComparison.CurrentCultureIgnoreCase))
					{
						nameText.text = character.name;
						string text = string.Join(" ", words[2..]);
						text = text.Replace("\"", "");
						dialogueText.text = text;
						break;
					}
				}
				break;
				
		}
	}

	public void EndDialogue()
	{
		//TaskManager.instance.AddTask(currentDialogueScript.taskToStart);
		uiCanvas.SetActive(false);
		currentDialogueScript = null;
		scriptLines = null;
	}
	private void Update()
	{
		if (currentDialogueScript && Input.GetMouseButtonDown(0))
		{
			ContinueDialogue();
		}
	}
}