using System;
using System.Reflection;
using NUnit.Framework;
using TMPro;
using UnityEditor;
using UnityEngine;
using XGame;
using XWorld.Framework.Protocol;

public sealed class WorldChatModuleTests
{
    private GameObject view;
    private GameObject host;

    [TearDown]
    public void TearDown()
    {
        if (view != null)
        {
            UnityEngine.Object.DestroyImmediate(view);
        }
        if (host != null)
        {
            UnityEngine.Object.DestroyImmediate(host);
        }
    }

    [Test]
    public void EndEditingInput_SubmitsTrimmedWorldChat()
    {
        WorldChatModule module = CreateBoundModule();
        TMP_InputField input = view.transform.FindTransform("InputHitArea").GetComponent<TMP_InputField>();
        string sent = null;
        module.OnSendWorldChat = text => sent = text;

        input.text = "  hello world  ";
        input.onEndEdit.Invoke(input.text);

        Assert.That(sent, Is.EqualTo("hello world"));
        Assert.That(input.text, Is.Empty);
    }

    [Test]
    public void ReceivedMessage_UpdatesCollapsedPreview()
    {
        WorldChatModule module = CreateBoundModule();
        TMP_Text collapsedText = view.transform.FindTransform("Txt_CollapsedPlaceholder").GetComponent<TMP_Text>();

        module.HandleWorldChatMessage(new WorldChatMessageMsg
        {
            PlayerId = 2,
            PlayerName = "Bob",
            Text = "hello world"
        });

        Assert.That(collapsedText.text, Is.EqualTo("Bob: hello world"));
    }

    private WorldChatModule CreateBoundModule()
    {
        GameObject prefab = AssetDatabase.LoadAssetAtPath<GameObject>("Assets/Game/Art/UI/Prefab/UI_CommonChat.prefab");
        Assert.That(prefab, Is.Not.Null);

        view = UnityEngine.Object.Instantiate(prefab);
        host = new GameObject("WorldChatModuleTestHost");
        WorldChatModule module = host.AddComponent<WorldChatModule>();
        module.Initialize(1, _ => { });

        SetPrivateField(module, "view", view);
        InvokePrivate(module, "CacheControls");
        InvokePrivate(module, "BindEvents");
        return module;
    }

    private static void SetPrivateField(object target, string name, object value)
    {
        FieldInfo field = target.GetType().GetField(name, BindingFlags.Instance | BindingFlags.NonPublic);
        Assert.That(field, Is.Not.Null);
        field.SetValue(target, value);
    }

    private static void InvokePrivate(object target, string name)
    {
        MethodInfo method = target.GetType().GetMethod(name, BindingFlags.Instance | BindingFlags.NonPublic);
        Assert.That(method, Is.Not.Null);
        method.Invoke(target, Array.Empty<object>());
    }
}