using System.Collections.Generic;
using UnityEngine;
using TMPro;
using UnityEngine.UI;
using KodeFlowStudios.Parley.GraphCore;

public class ChoiceExample : MonoBehaviour
{
	public TMP_Text speakerNameText;
	public TMP_Text dialogueText;
	public GameObject choiceButtonPrefab;

	ParleyGraph parleyGraph;

    void Start()
    {
		Dialogue();
    }

	async void Dialogue()
	{
		parleyGraph = new ParleyGraph("Choice", "Example");

		while (parleyGraph.ConversationEnded != true)
		{
			speakerNameText.text = parleyGraph.CurrentNode.Speaker;
			dialogueText.text = parleyGraph.CurrentNode.Text;

			var choices = parleyGraph.GetCurrentChoices();
			if (choices.Count > 0)
			{
				float yOffset = 0f;
				List<GameObject> choiceButtons = new();

				for (int x = 0; x < parleyGraph.CurrentNode.Choices.Count; x++)
				{
					int choiceIndex = x;
					GameObject choiceButton = Instantiate(choiceButtonPrefab, transform);

					RectTransform rt = choiceButton.GetComponent<RectTransform>();
					RectTransform prt = GetComponent<RectTransform>();

					float yPos = -(prt.sizeDelta.y/2) - (rt.sizeDelta.y/2) - (rt.sizeDelta.y*x);
					rt.localPosition = new Vector3(0, yPos, 0);

					transform.position = new Vector3(transform.position.x, transform.position.y + rt.sizeDelta.y, transform.position.z);
					yOffset += rt.sizeDelta.y;

					choiceButton.GetComponentInChildren<TMP_Text>().text = parleyGraph.CurrentNode.Choices[x].Text;

					choiceButtons.Add(choiceButton);

					choiceButton.GetComponent<Button>().onClick.AddListener(() =>
					{
						parleyGraph.ChoiceMade(choiceIndex);
						foreach (GameObject btn in choiceButtons) Destroy(btn);
					});
				}

				await parleyGraph.GetPlayerChoice();
				transform.position = new Vector3(transform.position.x, transform.position.y - yOffset, transform.position.z);
			}
			else await parleyGraph.OnNextDialogue;
		}

		parleyGraph = null;
	}
}