using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using AtlasUtility;
using UnityEditor;
using UnityEngine;

public class SpriteUtilityWindow : EditorWindow
{
    #region Config

    protected SpriteUtility Instance;

    protected SerializedProperty Path;
    protected SerializedProperty Name;
    protected SerializedProperty Sprite;

    protected SerializedObject SerializedObject;

    #endregion

    [MenuItem("DashGame/SpriteUtility")]
    protected static void ShowWindow()
    {
        Type inspectorType = Type.GetType("UnityEditor.InspectorWindow,UnityEditor.dll");

        SpriteUtilityWindow window = GetWindow<SpriteUtilityWindow>(inspectorType);

        window.titleContent = new GUIContent("SpriteUtility");
        window.Show();
    }

    private void OnEnable()
    {
        Instance = InstanceManager.SearchInstance<SpriteUtility>();
        SerializedObject = new SerializedObject(Instance);

        Path = SerializedObject.FindProperty("Path");
        Name = SerializedObject.FindProperty("Name");
        Sprite = SerializedObject.FindProperty("Sprite");
    }

    private void OnGUI()
    {
        SerializedObject.Update();

        EditorGUILayout.PropertyField(Sprite, new GUIContent("Sprite"));

        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PropertyField(Path, new GUIContent("Path"));
        if (GUILayout.Button("UseSelectedPath", GUILayout.MaxWidth(120)))
        {
            AtlasUtilityWindow.GetSelectedPath(ref Instance.Path);
        }
        EditorGUILayout.EndHorizontal();

        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.PropertyField(Name, new GUIContent("Name"));
        if (GUILayout.Button("UseSelectedName", GUILayout.MaxWidth(120)))
        {
            AtlasUtilityWindow.GetSelectedName(ref Instance.Name);
        }
        EditorGUILayout.EndHorizontal();

        if (GUILayout.Button("Generate"))
        {
            Generate();
        }

        SerializedObject.ApplyModifiedProperties();
    }

    private void Generate()
    {
        if (Instance.Sprite == null)
        {
            throw new Exception("Sprite未赋值");
        }

        Mesh mesh = SpriteUtility.CreateMesh(Instance.Sprite);

        AssetDatabase.CreateAsset(mesh, GetFullPath());
    }

    private string GetFullPath()
    {
        string directory = Instance.Path.TrimEnd('/', '\\') + "/";

        if (directory.Length < 6 || directory.Substring(0, 6).ToLower() != "assets")
        {
            throw new Exception("Path必须位置Assets目录内");
        }

        if (!Directory.Exists(directory))
        {
            throw new Exception("文件夹不存在");
        }

        if (string.IsNullOrEmpty(Instance.Name) || Instance.Name.Any(System.IO.Path.GetInvalidFileNameChars().Contains))
        {
            throw new Exception("无效的名字");
        }

        string nameWithFormat = Instance.Name + ".asset";

        return directory + nameWithFormat;
    }
}