using System;
using System.Collections.Generic;
using Wwise.Wooduan.Tools;
using UnityEditor;
using UnityEngine;
using Object = UnityEngine.Object;

namespace Wwise.Wooduan.Editor
{    
    public static class AkWooduanGuiDrawer
    {
        public static void DrawPlayStopButton(Action onPlayClicked = null, Action onStopClicked = null)
        {
            if (onPlayClicked != null)
            {
                GUI.contentColor = Color.green;
                if (GUILayout.Button("▶", onStopClicked == null ? EditorStyles.miniButton : EditorStyles.miniButtonLeft,
                    GUILayout.Width(20)))
                    onPlayClicked();
                GUI.contentColor = Color.white;
            }
            if (onStopClicked != null)
            {
                GUI.contentColor = Color.red;
                if (GUILayout.Button("■",
                    onPlayClicked == null ? EditorStyles.miniButton : EditorStyles.miniButtonRight,
                    GUILayout.Width(20)))
                    onStopClicked();
                GUI.contentColor = Color.white;
            }
        }
        
        public static void DrawProperty(SerializedProperty property, string labelName = "", int labelWidth = 100, int fieldWidth = 50)
        {
            if (labelName == "") labelName = property.displayName;
            GUILayout.BeginHorizontal();
            EditorGUILayout.LabelField(labelName, GUILayout.Width(labelWidth));
            EditorGUILayout.PropertyField(property, GUIContent.none, GUILayout.MinWidth(fieldWidth));
            GUILayout.EndHorizontal();
        }
        
        public static void DrawList(SerializedProperty list, string label = "", WwiseObjectType type = WwiseObjectType.None, Action<WwiseObjectReference> dragDropReceiver = null)
        {
            if (label != "")
            {
                var dropArea = new EditorGUILayout.VerticalScope(GUI.skin.label);
                using (dropArea)
                {
                    EditorGUILayout.LabelField(label, EditorStyles.boldLabel);
                    if (dragDropReceiver != null)
                        CheckDragDropAction(dropArea.rect, type, dragDropReceiver);
                }
            }
            
            var size = list.FindPropertyRelative("Array.size");
            if (size.hasMultipleDifferentValues)
            {
                EditorGUILayout.HelpBox("Not showing lists with different sizes.", MessageType.Info);
            }

            var box = new EditorGUILayout.VerticalScope(GUI.skin.box);
            using (box)
            {
                if (list.arraySize == 0)
                {
                    GUI.contentColor = Color.yellow;
                    if (GUILayout.Button(type + " not Assigned", EditorStyles.miniButton))
                        list.arraySize++;
                    GUI.contentColor = Color.white;
                    if (dragDropReceiver != null)
                        CheckDragDropAction(box.rect, type, dragDropReceiver);
                }
                else
                {
                    for (var i = 0; i < list.arraySize; i++)
                    {
                        EditorGUILayout.BeginHorizontal();
                        var index = (i + 1).ToString("00");
                        GUI.contentColor = Color.cyan;
                        EditorGUILayout.LabelField(index, GUILayout.Width(20));
                        GUI.contentColor = Color.white;
                        EditorGUILayout.PropertyField(list.GetArrayElementAtIndex(i), GUIContent.none);
                        DrawAddDeleteButtons(list, i);
                        EditorGUILayout.EndHorizontal();
                    }
                }
            }
        }
        
        public static void DrawList<T>(List<T> list, string label = "") where T : Object
        {
            if (label != "")
                EditorGUILayout.LabelField(label, EditorStyles.boldLabel);

            using (new EditorGUILayout.VerticalScope(GUI.skin.box))
            {
                if (list.Count == 0)
                {
                    GUI.contentColor = Color.yellow;
                    if (GUILayout.Button(typeof(T).Name + " not Assigned", EditorStyles.miniButton))
                        list.Add(null);
                    GUI.contentColor = Color.white;
                }
                else
                {
                    for (var i = 0; i < list.Count; i++)
                    {
                        EditorGUILayout.BeginHorizontal();
                        var index = (i + 1).ToString("00");
                        GUI.contentColor = Color.cyan;
                        EditorGUILayout.LabelField(index, GUILayout.Width(20));
                        GUI.contentColor = Color.white;
                        list[i] = EditorGUILayout.ObjectField(list[i], typeof(T), false) as T;
                        if (GUILayout.Button("+", EditorStyles.miniButtonLeft, GUILayout.Width(20)))
                        {
                            list.Insert(i + 1, null);
                        }
                        if (GUILayout.Button("-", EditorStyles.miniButtonRight, GUILayout.Width(20)))
                        {
                            list.RemoveAt(i);
                        }
                        EditorGUILayout.EndHorizontal();
                    }
                }
            }
        }

        private static void CheckDragDropAction(Rect dropArea, WwiseObjectType type, Action<WwiseObjectReference> action)
        {
            var currentEvent = Event.current;
            if (!dropArea.Contains(currentEvent.mousePosition))
                return;

            if (currentEvent.type != EventType.DragUpdated && currentEvent.type != EventType.DragPerform)
                return;

            var reference = AkWwiseTypes.DragAndDropObjectReference;
            if (reference != null && reference.WwiseObjectType != type)
                reference = null;

            DragAndDrop.visualMode = reference != null ? DragAndDropVisualMode.Copy : DragAndDropVisualMode.Rejected;
            
            if (currentEvent.type == EventType.DragPerform)
            {
                DragAndDrop.AcceptDrag();

                if (reference != null)
                    action(reference);
                DragAndDrop.PrepareStartDrag();
                GUIUtility.hotControl = 0;
            }
            currentEvent.Use();
        }

        private static void DrawAddDeleteButtons(SerializedProperty list, int index)
        {
            if (GUILayout.Button("+", EditorStyles.miniButtonLeft, GUILayout.Width(20)))
            {
                list.InsertArrayElementAtIndex(index);
            }
            if (GUILayout.Button("-", EditorStyles.miniButtonRight, GUILayout.Width(20)))
            {
                var oldSize = list.arraySize;
                list.DeleteArrayElementAtIndex(index);
                if (list.arraySize == oldSize) list.DeleteArrayElementAtIndex(index);
            }
        }

        public static void DrawWwiseObject(SerializedObject serializedObject, string objectName = "AudioEvent")
        {
            using (new EditorGUILayout.VerticalScope(GUI.skin.box))
            {
                EditorGUILayout.BeginHorizontal();
                EditorGUILayout.PropertyField(serializedObject.FindProperty(objectName), GUIContent.none);
                EditorGUILayout.EndHorizontal();
            }
        }       
        
        public static void DrawSaveButton(Object obj)
        {
            GUI.contentColor = Color.green;
            if (GUILayout.Button("Save Asset", EditorStyles.toolbarButton))
            {                
                EditorUtility.SetDirty(obj);                
                AssetDatabase.SaveAssets();
            }
            GUI.contentColor = Color.white;
        }                     
        
        public static void DrawPathDisplay(string title, string path, Action action, string prefix = "")
        {
            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.LabelField(title, EditorStyles.boldLabel);
            if (GUILayout.Button("...", EditorStyles.miniButton, GUILayout.Width(25))) action();
            EditorGUILayout.EndHorizontal();
            if (string.IsNullOrEmpty(path))
                EditorGUILayout.HelpBox("Path not set!", MessageType.Error);
            else
                EditorGUILayout.LabelField(prefix + path);
            EditorGUILayout.Separator();
        }
        
        public static void CheckLinkedComponent<T>(Component component) where T : Component
        {
            var linkedComponent = component.GetComponent<T>();
            var name = typeof(T).Name;
            if (linkedComponent == null || linkedComponent.ToString() == "null")
            {
                EditorGUILayout.HelpBox("Can't Find " + name + " Component!", MessageType.Error);
                if (GUILayout.Button("Add " + name + " to GameObject", EditorStyles.miniButton))
                    component.gameObject.AddComponent<T>();
            }
        }

        public static void DisplaySearchPath(ref string searchPath)
        {
            EditorGUILayout.Separator();
            EditorGUILayout.LabelField("Search Path", EditorStyles.boldLabel);
            GUILayout.BeginHorizontal();
            EditorGUILayout.LabelField("../" + AkWooduanScriptingTools.ShortPath(searchPath), GUI.skin.textField);
            if (GUILayout.Button("Browse", EditorStyles.miniButton, GUILayout.MaxWidth(100)))			
                searchPath = EditorUtility.OpenFolderPanel("Root Folder", searchPath, "");
            GUILayout.EndHorizontal();
        }
    }
}