using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class TextDisplayer : MonoBehaviour
{
    [SerializeField]private TextScene currentScene;

    [SerializeField]private List<Button> buttons;

    private TextNode currentNode;
    private Text content;

    private void Start()
    {
        content = GameObject.Find("TextNodeContent").GetComponent<Text>();
        SetCurrentNode(currentScene.startingNode);
    }

    // make this public so we can assign it as a listener for the buttons
    // allow it to take a node so we know how to move thru buttons
    public void SetCurrentNode(TextNode node)
    {
        Debug.Log("setting node");
        currentNode = currentScene.startingNode;
        RunText();
    }

    public void RunText()
    {
        //write text on screen
        content.text = currentNode.content;
        RunBranches();
    }

    public void RunBranches()
    {
        // if there are branches for this node, let's make buttons
        if (currentNode.branches.Count > 0)
        {
            // first turn off all the buttons
            foreach (var button in buttons)
                button.gameObject.SetActive(false);

            // then, enable and populate each button based on the branch data
            var buttonIndex = 0;
            foreach (var branch in currentNode.branches)
            {
                buttons[buttonIndex].gameObject.SetActive(true);
                buttons[buttonIndex].GetComponentInChildren<Text>().text = branch.buttonContent;
                buttons[buttonIndex].onClick.AddListener(() => SetCurrentNode(branch.node));
                buttonIndex++;
            }
        }
    }


}