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

public class KleinerSternMenu : MonoBehaviour
{
    public string nameOfThisScene;
    public GameObject buttonPrefab;

    private class SceneWithMeta {
        public string displayName;
        public string internalName;
        public SceneWithMeta(string internalName, string displayName){
            this.displayName = displayName;
            this.internalName = internalName;
        }
    }
    private readonly List<SceneWithMeta> sceneList = new List<SceneWithMeta> {
        new("kleiner_Stern_1", "Szene 1: Sternenhimmel"),
        new("kleiner_Stern_2", "Szene 2: Wald"),
        new("kleiner_Stern_3", "Szene 3: Freies Feld"),
        new("kleiner_Stern_4", "Szene 4: Herberge"),
        new("kleiner_Stern_5", "Szene 5: Stall"),
        new("kleiner_Stern_6", "Szene 6: Stall")
    };
    private bool visible;
    private List<GameObject> buttons;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        visible = false;
        sceneList.Add(new("Hauptmenu", "Zum Hauptmenü"));
        buttons = new();
        float y = 20;
        sceneList.Reverse();
        foreach (SceneWithMeta s in sceneList) {
            GameObject b = Instantiate(buttonPrefab, transform, false);
            RectTransform tr = b.GetComponent<RectTransform>();
            tr.anchorMin = Vector2.zero;
            tr.anchorMax = Vector2.zero;
            tr.anchoredPosition = new(20, y);
            tr.pivot = Vector2.zero;
            y += 50;
            b.GetComponentInChildren<TextMeshProUGUI>().text = s.displayName;
            b.GetComponent<Button>().onClick.AddListener(() => SceneManager.LoadScene(s.internalName));
            if (s.internalName == nameOfThisScene) {
                b.GetComponent<Image>().color = new(0, 0, 255);
            }
            b.SetActive(false);
            buttons.Add(b);
        }
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Escape)){
            visible = !visible;
            foreach (GameObject button in buttons){
                button.SetActive(visible);
            }
        }
    }
}