using System.Collections.Generic;
using UnityEditor;
using UnityEditor.SceneManagement;
using UnityEngine;
using Test_2022.LightsControl;

[CustomEditor(typeof(LightsControlController))]
[CanEditMultipleObjects]
public sealed class LightsControlControllerEditor : Editor
{
    public override void OnInspectorGUI()
    {
        DrawDefaultInspector();

        EditorGUILayout.Space(10);

        using (new EditorGUILayout.VerticalScope(EditorStyles.helpBox))
        {
            EditorGUILayout.LabelField("Tools", EditorStyles.boldLabel);

            using (new EditorGUILayout.HorizontalScope())
            {
                if (GUILayout.Button("Add Selected"))
                    AddSelectedLights(false);

                if (GUILayout.Button("Add Selected (+Children)"))
                    AddSelectedLights(true);
            }

            using (new EditorGUILayout.HorizontalScope())
            {
                if (GUILayout.Button("Find All (Clear)"))
                    FindAll(true);

                if (GUILayout.Button("Find All (Append)"))
                    FindAll(false);
            }

            using (new EditorGUILayout.HorizontalScope())
            {
                if (GUILayout.Button("Remove Nulls"))
                    RemoveNulls();

                if (GUILayout.Button("Clear List"))
                    ClearList();
            }
        }

        EditorGUILayout.Space(10);

        using (new EditorGUILayout.VerticalScope(EditorStyles.helpBox))
        {
            EditorGUILayout.LabelField("Runtime", EditorStyles.boldLabel);

            if (!Application.isPlaying)
                EditorGUILayout.HelpBox("进入 Play 模式后才会执行闪烁/定时协程。也可以在组件上启用 Auto Start On Enable 自动开始。", MessageType.Info);

            using (new EditorGUI.DisabledScope(!Application.isPlaying))
            {
                using (new EditorGUILayout.HorizontalScope())
                {
                    if (GUILayout.Button("Start"))
                        StartControl();

                    if (GUILayout.Button("Stop (Restore)"))
                        StopControl(true);

                    if (GUILayout.Button("Stop (No Restore)"))
                        StopControl(false);
                }
            }
        }
    }

    void AddSelectedLights(bool includeChildren)
    {
        var selected = Selection.gameObjects;
        if (selected == null || selected.Length == 0)
            return;

        var toAdd = new List<Light>();
        for (var i = 0; i < selected.Length; i++)
        {
            var go = selected[i];
            if (go == null)
                continue;

            if (includeChildren)
                toAdd.AddRange(go.GetComponentsInChildren<Light>(true));
            else
            {
                var l = go.GetComponent<Light>();
                if (l != null)
                    toAdd.Add(l);
            }
        }

        if (toAdd.Count == 0)
            return;

        foreach (var t in targets)
        {
            var c = (LightsControlController)t;
            Undo.RecordObject(c, "Add Lights");
            c.AddLights(toAdd);
            EditorUtility.SetDirty(c);
            MarkSceneDirty(c);
        }
    }

    void FindAll(bool clearFirst)
    {
        foreach (var t in targets)
        {
            var c = (LightsControlController)t;
            Undo.RecordObject(c, "Find Lights In Scene");
            c.FindAllLightsInScene(clearFirst);
            EditorUtility.SetDirty(c);
            MarkSceneDirty(c);
        }
    }

    void RemoveNulls()
    {
        foreach (var t in targets)
        {
            var c = (LightsControlController)t;
            Undo.RecordObject(c, "Remove Null Lights");
            c.RemoveNullLights();
            EditorUtility.SetDirty(c);
            MarkSceneDirty(c);
        }
    }

    void ClearList()
    {
        foreach (var t in targets)
        {
            var c = (LightsControlController)t;
            Undo.RecordObject(c, "Clear Lights");
            c.ClearLights();
            EditorUtility.SetDirty(c);
            MarkSceneDirty(c);
        }
    }

    void StartControl()
    {
        foreach (var t in targets)
        {
            var c = (LightsControlController)t;
            c.StartControl();
        }
    }

    void StopControl(bool restoreBaseState)
    {
        foreach (var t in targets)
        {
            var c = (LightsControlController)t;
            c.StopControl(restoreBaseState);
        }
    }

    static void MarkSceneDirty(LightsControlController c)
    {
        if (Application.isPlaying)
            return;
        if (!c.gameObject.scene.IsValid())
            return;
        EditorSceneManager.MarkSceneDirty(c.gameObject.scene);
    }
}