// Copyright (c) 2025 EFramework Innovation. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.

using NUnit.Framework;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using UnityEditor;
using UnityEngine;
using UnityEngine.TestTools;
using EFramework.Unity.Utility;
using EFramework.Unity.Editor;
using EFramework.Unity.UIPlugin.Editor;
using EFramework.Unity.UIPlugin;

/// <summary>
/// TestUIAtlasEditor 是 UIAtlasEditor 的单元测试。
/// </summary>
public class TestUIAtlasEditor
{
    const string TestDir = "Assets/Temp/TestUIAtlasEditor";

    readonly string TestRawPath = XFile.PathJoin(TestDir, "RawAssets/TestAtlas");

    readonly string TestPrefabFile = XFile.PathJoin(TestDir, "TestAtlas.prefab");

    [SetUp]
    public void Setup()
    {
        if (!XFile.HasDirectory(TestDir)) XFile.CreateDirectory(TestDir);
        if (XFile.HasDirectory(TestRawPath)) XFile.DeleteDirectory(TestRawPath);
        XFile.CopyDirectory("Assets/Tests/Runtime/RawAssets", TestRawPath);
    }

    [TearDown]
    public void Reset()
    {
        if (XFile.HasDirectory(TestDir))
        {
            XFile.DeleteDirectory(TestDir);
            AssetDatabase.Refresh();
        }
    }

    [Test]
    public void OnLoad()
    {
        // Arrange
        UIAtlasEditor.icon = null;
        var originCount = EditorApplication.projectWindowItemOnGUI == null ? 0 : EditorApplication.projectWindowItemOnGUI.GetInvocationList()?.Length ?? 0;

        // Act
        (new UIAtlasEditor() as XEditor.Event.Internal.OnEditorLoad).Process();

        // Assert
        Assert.That(UIAtlasEditor.icon, Is.Not.Null, "icon 应当被加载到。");
        var addedCount = EditorApplication.projectWindowItemOnGUI.GetInvocationList().Length;
        Assert.That(originCount + 1, Is.EqualTo(addedCount), "回调函数应当被注册。");
    }

    [Test]
    public void Create()
    {
        LogAssert.ignoreFailingMessages = true;  // 忽略所有错误日志
        var asset = UIAtlasEditor.Create(TestPrefabFile, TestRawPath);
        LogAssert.ignoreFailingMessages = false;    // 恢复正常行为

        // Assert
        Assert.That(asset, Is.Not.Null, "应该成功创建资产。");
        var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(TestPrefabFile);
        Assert.That(prefab, Is.Not.Null, "预制体应该存在。");

        var atlas = prefab.GetComponent<UIAtlas>();
        Assert.That(atlas, Is.Not.Null, "预制体应该包含 UIAtlas 组件。");
        Assert.That(TestRawPath, Is.EqualTo(atlas.RawPath), "RawPath 应该被正确设置。");
    }

    [Test]
    public void Import()
    {
        var task = XEditor.Command.Run(
                               bin: XEditor.Command.Find("TexturePacker", "C:/Program Files/CodeAndWeb/TexturePacker/bin", "/Applications/TexturePacker.app/Contents/MacOS"),
                               args: new string[] { "--version" });
        task.Wait();
        Assert.That(task.Result.Code, Is.EqualTo(0), "TexturePacker 应当安装成功。");

        // 测试导入失败
        {
            LogAssert.Expect(LogType.Error, new Regex(@"UIAtlasEditor\.Import: null atlas at: .*"));
            // 使用一个不存在的路径
            var nonExistentPath = "Assets/NonExistent/Atlas.prefab";
            var result = UIAtlasEditor.Import(nonExistentPath);
            Assert.That(result, Is.False, "当图集不存在时应返回 false。");
        }

        // 测试导入成功
        {
            // 创建图集预制体但设置不存在的RawPath
            var go = new GameObject("TestAtlas");
            var atlas = go.AddComponent<UIAtlas>();

            atlas.RawPath = TestRawPath;
            LogAssert.ignoreFailingMessages = true;
            PrefabUtility.SaveAsPrefabAsset(go, TestPrefabFile);   // 保存预制体会触发Import
            LogAssert.ignoreFailingMessages = false;

            // 验证预制体是否包含精灵引用
            var prefab = AssetDatabase.LoadAssetAtPath<GameObject>(TestPrefabFile);
            var prefaAtlas = prefab.GetComponent<UIAtlas>();
            Assert.That(prefaAtlas, Is.Not.Null, "预制体应该包含 UIAtlas 组件。");

            var sprites = prefaAtlas.Sprites.ToList();
            Assert.That(sprites.Count, Is.EqualTo(4), "图片精灵的数量应当为 4。");
            Assert.That(sprites.Exists(ele => ele.name == "Square"), Is.True, "指定的图片精灵应当存在。");
            Assert.That(sprites.Exists(ele => ele.name == "UnityIcon"), Is.True, "指定的图片精灵应当存在。");
            Assert.That(sprites.Exists(ele => ele.name == "UnityIcon2"), Is.True, "指定的图片精灵应当存在。");
            Assert.That(sprites.Exists(ele => ele.name == "UnityIcon3"), Is.True, "指定的图片精灵应当存在。");

            var atlasDir = Path.GetDirectoryName(TestPrefabFile);
            Assert.That(XFile.HasFile(XFile.PathJoin(atlasDir, "TestAtlas.png")), Is.True, "TestAtlas.png 应当被生成。");
        }
    }
}