using UnityEditor;
using UnityEngine;
using UnityEngine.UI;
using VketCloudGUITools.Runtime;
using UnityEditorInternal;

namespace VketCloudGUITools.Editor
{
    [CanEditMultipleObjects]
    [CustomEditor(typeof(VCCanvas))]
    public class VCCanvasInspector : UnityEditor.Editor
    {
        private ReorderableList _reorderableList;
        public void OnEnable()
        {
        }
        public override void OnInspectorGUI()
        {
            serializedObject.Update();
            DrawProperties();
        }

        //各要素の描画
        void DrawProperties()
        {
            EditorGUI.BeginChangeCheck();

            //if (!CheckValues())
            //{
            //    EditorGUILayout.HelpBox("CanvasScalerの値とVketCloudGUICanvasの値が異なるため、表示が崩れてしまう可能性があります。", MessageType.Warning);
            //    if (GUILayout.Button("値のコピー : VketCloudGUICanvas -> CanvasScaler"))
            //    {
            //        OverwriteCanvasScalerValue();
            //    }
            //}
            DrawDefaultInspector();
            if (_reorderableList == null)
            {
                var scriptsProperty = serializedObject.FindProperty("Scripts");
                _reorderableList = new ReorderableList(serializedObject, scriptsProperty, true, true, true, true);
                _reorderableList.drawElementCallback = (Rect rect, int index, bool isActive, bool isFocused) =>
                {
                    var element = _reorderableList.serializedProperty.GetArrayElementAtIndex(index);
                    rect.y += 2;
                    var label = new GUIContent($"Element {index}");
                    EditorGUI.PropertyField(new Rect(rect.x, rect.y, rect.width, EditorGUIUtility.singleLineHeight), element, label);
                };

                _reorderableList.drawHeaderCallback = rect =>
                {
                    EditorGUI.LabelField(rect, "HeliScript");
                };
            }
            _reorderableList.DoLayoutList();
            serializedObject.ApplyModifiedProperties();
            if (EditorGUI.EndChangeCheck())
            {
                foreach (var v in targets)
                {
                    Undo.RecordObject((v as Runtime.VCCanvas).GetComponent<CanvasScaler>(), "Inspector");
                    var vketCloudGUICanvas = v as VCCanvas;
                    vketCloudGUICanvas.ApplyValues();
                }
            }
        }
        bool CheckValues()
        {
            foreach (var v in targets)
            {
                var vketCloudGUICanvas = v as VCCanvas;
                var canvasScaler = vketCloudGUICanvas.GetComponent<CanvasScaler>();
                if (vketCloudGUICanvas.CanvasType == Runtime.CanvasType.None && canvasScaler.uiScaleMode != CanvasScaler.ScaleMode.ConstantPixelSize)
                    return false;
                if (vketCloudGUICanvas.CanvasType != Runtime.CanvasType.None && canvasScaler.uiScaleMode != CanvasScaler.ScaleMode.ScaleWithScreenSize)
                    return false;
                if (vketCloudGUICanvas.CanvasType == Runtime.CanvasType.LandScape)
                {
                    if (canvasScaler.referenceResolution != VCCanvas.CANVAS_SIZE_LANDSCAPE)
                        return false;
                    if (canvasScaler.matchWidthOrHeight != 0)
                        return false;
                }
                else
                {
                    if (canvasScaler.referenceResolution != VCCanvas.CANVAS_SIZE_PORTRAIT)
                        return false;
                    if (canvasScaler.matchWidthOrHeight != 1)
                        return false;
                }
            }
            return true;
        }
        void OverwriteCanvasScalerValue()
        {
            foreach (var v in targets)
            {
                var vketCloudGUICanvas = v as VCCanvas;
                vketCloudGUICanvas.ApplyValues();
            }
        }
    }
}