using UnityEngine;
using UnityEditor;
using UnityEditorInternal;
using System;

namespace Incendiary.Core.Character
{
    [CustomEditor(typeof(CharacterDatabase))]
    public class CharacterDatabaseEditor : Editor
    {
        private SerializedProperty m_property;
        private ReorderableList m_list;

        private void OnEnable()
        {

            m_property = serializedObject.FindProperty("ScriptableCharacter");
            m_list = new ReorderableList(serializedObject, m_property, true, true, true, true)
            {
                drawHeaderCallback = DrawListHeader,
                drawElementCallback = DrawListElement,
                elementHeightCallback = index => ElementHeightCallback(m_property, index),

                onAddCallback = (ReorderableList l) =>
                {
                    var index = l.serializedProperty.arraySize;
                    l.serializedProperty.arraySize++;
                    l.index = index;
                    ScriptableCharacter asset = CreateInstance<ScriptableCharacter>();
                    AssetDatabase.CreateAsset(asset, "Assets/ScriptableCharacter/newCharacter" + (index + 1) + ".asset");
                    AssetDatabase.SaveAssets();
                    var item = m_list.serializedProperty.GetArrayElementAtIndex(index);
                    item.objectReferenceValue = asset;
                    item.isExpanded = true;
                },
                onRemoveCallback = (ReorderableList l) =>
                {
                    ScriptableCharacter t = (ScriptableCharacter)m_property.GetArrayElementAtIndex(l.index).objectReferenceValue;

                    ReorderableList.defaultBehaviours.DoRemoveButton(l);
                    if (t == null) return;

                    if (EditorUtility.DisplayDialog("Delete Warning", "Delete the Asset " + t.name + " to ?", "Yes", "No"))
                    {
                        DestroyImmediate(t, true);
                    }
                    l.serializedProperty.arraySize--;
                }

            };
        }

        private void DrawListHeader(Rect rect)
        {
            GUI.Label(rect, "Character Database");
        }
        float ElementHeightCallback(SerializedProperty property, int index)
        {
            var item = m_property.GetArrayElementAtIndex(index);

            return m_list.elementHeight = !item.isExpanded ? EditorGUIUtility.singleLineHeight : EditorGUIUtility.singleLineHeight * 5;
        }
        private void DrawListElement(Rect rect, int index, bool isActive, bool isFocused)
        {
            var item = m_property.GetArrayElementAtIndex(index);

            //Scriptable Object Field - Slot
            EditorGUI.PropertyField(new Rect(rect.x + 25, rect.y, EditorGUIUtility.labelWidth * 1.5f, EditorGUIUtility.singleLineHeight), item, GUIContent.none);

            if (item.objectReferenceValue == null)
            {
                item.isExpanded = false;
                return;
            }

            //FoldOut Button
            item.isExpanded = EditorGUI.Foldout(new Rect(rect.x + 15, rect.y + 2, rect.width, rect.height), item.isExpanded, GUIContent.none, false);


            if (item.isExpanded)
            {

                SerializedObject target = new SerializedObject(item.objectReferenceValue);
                rect.y += 3;


                EditorGUI.PropertyField(new Rect(rect.x, rect.y + EditorGUIUtility.singleLineHeight, rect.width, EditorGUIUtility.singleLineHeight),
                 target.FindProperty("StringTest"), new GUIContent("Test"));
                rect.y += 3;
                EditorGUI.PropertyField(new Rect(rect.x, rect.y + EditorGUIUtility.singleLineHeight * 2, rect.width, EditorGUIUtility.singleLineHeight),
                 target.FindProperty("Health"), new GUIContent("Health"));
                rect.y += 3;
                EditorGUI.PropertyField(new Rect(rect.x, rect.y + EditorGUIUtility.singleLineHeight * 3, rect.width, EditorGUIUtility.singleLineHeight),
                 target.FindProperty("smthg"), new GUIContent("Sprite"));

            }

        }

        public override void OnInspectorGUI()
        {
            serializedObject.Update();
            EditorGUILayout.Space();
            m_list.DoLayoutList();
            serializedObject.ApplyModifiedProperties();

        }

    }
}