#if UNITY_EDITOR
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using UnityEngine.SceneManagement;

// Project namespaces
using MegaKoop.Steam; // SteamManager, SteamLobbyService
using MegaKoop.Game.Networking; // SteamCoopNetworkManager, SteamP2PTransport, LobbyGameSceneCoordinator

public static class CharacterSceneSetupGenerator
{
    private const string WizardPrefabPath = "Assets/Game/Hero/Wizard.prefab";

    [MenuItem("Tools/MegaKoop/Setup Character Scene Objects", priority = 1000)]
    public static void SetupCharacterScene()
    {
        var scene = SceneManager.GetActiveScene();
        if (!scene.IsValid())
        {
            EditorUtility.DisplayDialog("Character Scene Setup", "No valid scene is open. Please open your CharacterScene and run again.", "OK");
            return;
        }

        Undo.IncrementCurrentGroup();
        int group = Undo.GetCurrentGroup();

        // 1) Ensure SteamServices root and required components
        var servicesRoot = GameObject.Find("SteamServices");
        if (servicesRoot == null)
        {
            servicesRoot = new GameObject("SteamServices");
            Undo.RegisterCreatedObjectUndo(servicesRoot, "Create SteamServices");
        }

        EnsureComponent<SteamManager>(servicesRoot, "Add SteamManager");
        var lobby = EnsureComponent<SteamLobbyService>(servicesRoot, "Add SteamLobbyService");
        var coop = EnsureComponent<SteamCoopNetworkManager>(servicesRoot, "Add SteamCoopNetworkManager");
        EnsureComponent<SteamP2PTransport>(servicesRoot, "Add SteamP2PTransport");
        var coordinator = EnsureComponent<LobbyGameSceneCoordinator>(servicesRoot, "Add LobbyGameSceneCoordinator");

        // Keep servicesRoot persistent across scenes to match runtime behavior
        if (!Application.isPlaying)
        {
            // Editor-time: mark as DontSaveInBuild is not needed; users expect this object in scene.
            // At runtime, code calls DontDestroyOnLoad itself.
        }

        // 2) Ensure Wizard template exists in scene root
        var wizardInScene = GameObject.Find("Wizard");
        if (wizardInScene == null)
        {
            var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(WizardPrefabPath);
            if (prefab != null)
            {
                var instantiated = PrefabUtility.InstantiatePrefab(prefab, scene) as GameObject;
                if (instantiated != null)
                {
                    Undo.RegisterCreatedObjectUndo(instantiated, "Instantiate Wizard Template");
                    instantiated.name = "Wizard"; // Ensure exact name for coordinator lookup
                    instantiated.transform.SetPositionAndRotation(Vector3.zero, Quaternion.identity);
                }
            }
            else
            {
                // Fallback: create a simple placeholder
                var placeholder = GameObject.CreatePrimitive(PrimitiveType.Capsule);
                Undo.RegisterCreatedObjectUndo(placeholder, "Create Wizard Placeholder");
                placeholder.name = "Wizard";
                placeholder.transform.SetPositionAndRotation(Vector3.zero, Quaternion.identity);
                // Controller components are optional for template; coordinator will add bridges on clones.
                placeholder.AddComponent<CharacterController>();
                placeholder.AddComponent<MegaKoop.Game.ThirdPersonCharacterController>();
            }
        }

        // 3) Optional: ensure a basic ground so CharacterController can stand
        if (GameObject.Find("Ground") == null)
        {
            var ground = GameObject.CreatePrimitive(PrimitiveType.Plane);
            Undo.RegisterCreatedObjectUndo(ground, "Create Ground");
            ground.name = "Ground";
            ground.transform.position = Vector3.zero;
            ground.transform.localScale = Vector3.one * 2f;
        }

        // 4) Optional: ensure there is at least one light
        if (Object.FindObjectOfType<Light>() == null)
        {
            var lightGO = new GameObject("Directional Light");
            Undo.RegisterCreatedObjectUndo(lightGO, "Create Directional Light");
            var light = lightGO.AddComponent<Light>();
            light.type = LightType.Directional;
            light.intensity = 1.1f;
            lightGO.transform.rotation = Quaternion.Euler(50f, -30f, 0f);
        }

        // 5) Hint coordinator to use current scene name if it differs
        if (coordinator != null)
        {
            // If you want the coordinator to target this scene specifically, uncomment the next line:
            // SetPrivateField(coordinator, "characterSceneName", scene.name);
        }

        EditorSceneManager.MarkSceneDirty(scene);
        Undo.CollapseUndoOperations(group);

        EditorUtility.DisplayDialog("Character Scene Setup", "Character scene objects have been set up successfully.", "OK");
    }

    private static T EnsureComponent<T>(GameObject go, string undoName) where T : Component
    {
        var c = go.GetComponent<T>();
        if (c == null)
        {
            c = Undo.AddComponent<T>(go);
        }
        return c;
    }

    // Example helper if you later want to set private serialized fields via reflection
    private static void SetPrivateField(object target, string fieldName, object value)
    {
        var t = target.GetType();
        var f = t.GetField(fieldName, System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
        if (f != null)
        {
            f.SetValue(target, value);
            EditorUtility.SetDirty((Object)target);
        }
    }
}
#endif