using UnityEngine;
using UnityEditor;
using UnityEditor.SceneManagement;
using System.Collections.Generic;
using System.IO;
using System.Linq;

static class QuickSceneWindowHelper
{
    const float WindowWidth = 250f;
    const float WindowHeight = 300f;

    public static void ShowCentered<T>(string title) where T : EditorWindow
    {
        var window = EditorWindow.GetWindow<T>(title);
        var mainWindow = EditorGUIUtility.GetMainWindowPosition();
        window.position = new Rect(
            (mainWindow.width - WindowWidth) / 2,
            (mainWindow.height - WindowHeight) / 2,
            WindowWidth,
            WindowHeight);
        window.Show();
    }

    public static IEnumerable<EditorBuildSettingsScene> GetAvailableScenes()
    {
        string currentScenePath = EditorSceneManager.GetActiveScene().path;
        return EditorBuildSettings.scenes.Where(scene =>
            !string.Equals(scene.path, currentScenePath, System.StringComparison.OrdinalIgnoreCase));
    }

    public static string GetSceneDisplayName(EditorBuildSettingsScene scene)
    {
        string sceneName = Path.GetFileNameWithoutExtension(scene.path);
        return scene.enabled ? sceneName : $"{sceneName} (not in build)";
    }

    public static void DrawSceneList(OpenSceneMode mode)
    {
        EditorGUILayout.LabelField("Available Scenes:", EditorStyles.boldLabel);
        EditorGUILayout.Space();

        var scenes = EditorBuildSettings.scenes;
        if (scenes.Length == 0)
        {
            EditorGUILayout.HelpBox("No Scenes in Build Settings", MessageType.Warning);
            return;
        }

        var availableScenes = GetAvailableScenes().ToList();
        if (availableScenes.Count == 0)
        {
            EditorGUILayout.HelpBox("No other scenes available", MessageType.Info);
            return;
        }

        foreach (var scene in availableScenes)
        {
            if (GUILayout.Button(GetSceneDisplayName(scene), GUILayout.Height(30)))
            {
                OpenScene(scene.path, mode);
            }
        }
    }

    public static void OpenScene(string path, OpenSceneMode mode)
    {
        if (!EditorSceneManager.SaveCurrentModifiedScenesIfUserWantsTo())
            return;

        EditorSceneManager.OpenScene(path, mode);
        Debug.Log($"Opened scene ({mode}): {path}");
        EditorWindow.focusedWindow?.Close();
    }
}

public class QuickSceneWindow : EditorWindow
{
    [MenuItem("GameObject/Quick Open Adaptive Scene", false, 1)]
    public static void ShowWindow() => QuickSceneWindowHelper.ShowCentered<QuickSceneWindow>("Quick Scene");

    void OnGUI() => QuickSceneWindowHelper.DrawSceneList(OpenSceneMode.Additive);
}

public class QuickSingleSceneWindow : EditorWindow
{
    [MenuItem("GameObject/Quick Open Single Scene", false, 2)]
    public static void ShowWindow() => QuickSceneWindowHelper.ShowCentered<QuickSingleSceneWindow>("Quick Single Scene");

    void OnGUI() => QuickSceneWindowHelper.DrawSceneList(OpenSceneMode.Single);
}