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

public class MenuSyncButtonInjector : MonoBehaviour
{
    private const string MenuSceneName = "Menu";

    [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.AfterSceneLoad)]
    private static void AutoCreate()
    {
        if (FindFirstObjectByType<MenuSyncButtonInjector>() != null)
            return;

        GameObject go = new GameObject("[MenuSyncButtonInjector]");
        DontDestroyOnLoad(go);
        go.AddComponent<MenuSyncButtonInjector>();
    }

    private void Awake()
    {
        SceneManager.sceneLoaded += OnSceneLoaded;
        StartCoroutine(InjectAfterFrame());
    }

    private void OnDestroy()
    {
        SceneManager.sceneLoaded -= OnSceneLoaded;
    }

    private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
    {
        StartCoroutine(InjectAfterFrame());
    }

    private IEnumerator InjectAfterFrame()
    {
        yield return null;

        if (SceneManager.GetActiveScene().name != MenuSceneName)
            yield break;

        if (GameObject.Find("SyncButton") != null)
            yield break;

        Button sourceButton = FindButtonByText("CreateSong");
        if (sourceButton == null)
            sourceButton = FindButtonByText("음악만들기");
        if (sourceButton == null)
            yield break;

        Button syncButton = Instantiate(sourceButton, sourceButton.transform.parent);
        syncButton.gameObject.name = "SyncButton";
        foreach (VRBeats.LoadSceneButton loader in syncButton.GetComponents<VRBeats.LoadSceneButton>())
        {
            loader.enabled = false;
            Destroy(loader);
        }

        syncButton.onClick.RemoveAllListeners();
        syncButton.onClick.AddListener(SyncCalibrationOverlay.Open);

        RectTransform sourceRect = sourceButton.GetComponent<RectTransform>();
        RectTransform syncRect = syncButton.GetComponent<RectTransform>();
        syncRect.anchoredPosition = sourceRect.anchoredPosition + new Vector2(0.0f, -22.0f);

        TextMeshProUGUI tmp = syncButton.GetComponentInChildren<TextMeshProUGUI>(true);
        if (tmp != null)
            tmp.text = "SYNC";

        Text text = syncButton.GetComponentInChildren<Text>(true);
        if (text != null)
            text.text = "SYNC";
    }

    private static Button FindButtonByText(string text)
    {
        foreach (Button button in FindObjectsByType<Button>(FindObjectsSortMode.None))
        {
            TextMeshProUGUI tmp = button.GetComponentInChildren<TextMeshProUGUI>(true);
            if (tmp != null && tmp.text.Trim() == text)
                return button;

            Text legacyText = button.GetComponentInChildren<Text>(true);
            if (legacyText != null && legacyText.text.Trim() == text)
                return button;
        }

        return null;
    }
}