using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using UnityEngine;

public sealed class BriskQuickStartSample : MonoBehaviour
{
    private const float DesignWidth = 720f;
    private const float DesignHeight = 1280f;

    private enum SamplePage
    {
        Initialize,
        Login,
        Home,
        Announcements,
        Leaderboard,
        Archive,
        Space
    }

    [Header("初始化")]
    public string BaseUrl = "https://brisk.lightyears.ltd";
    public string GameKey = "demo-game";
    public string ClientVersion = "1.0.0";
    public string DeviceId = "editor-device";
    public bool ValidateSessionOnInitialize = true;

    [Header("登录")]
    public string LoginProvider = "tap";
    public string LoginUserId = "tap_user_10001";
    public string LoginCode = string.Empty;
    public string Nickname = "Unity示例玩家";
    public string AvatarUrl = string.Empty;

    [Header("排行榜")]
    public string RankKey = "season-score";
    public string SubmitScoreValue = "0";
    public string LeaderboardLimit = "10";
    public string AroundMeRange = "5";
    public string SeasonId = string.Empty;
    public string SeasonHistoryLimit = "20";

    [Header("云存档")]
    public string ArchiveSlotNo = "1";
    public string ArchiveBaseVersion = string.Empty;
    [TextArea(3, 6)]
    public string ArchiveContent = "{\n  \"save\": 1,\n  \"coins\": 128,\n  \"hero\": \"mage\",\n  \"title\": \"中文测试存档\"\n}";

    [Header("公告")]
    public string AnnouncementId = string.Empty;

    [Header("玩家空间")]
    public string SpacePlayerId = string.Empty;
    public string SpaceLoginProvider = "tap";
    public string SpaceLoginUserId = "tap_user_10001";
    [TextArea(3, 6)]
    public string SpacePayloadText = "这里是 unity 测试账户的空间内容。\n\n0.o";

    [Header("演示")]
    public bool AutoRunOnStart;

    private readonly List<string> _logs = new List<string>();

    private Vector2 _initScroll;
    private Vector2 _loginScroll;
    private Vector2 _homeScroll;
    private Vector2 _announcementScroll;
    private Vector2 _leaderboardScroll;
    private Vector2 _archiveScroll;
    private Vector2 _spaceScroll;
    private Vector2 _modalScroll;

    private SamplePage _page = SamplePage.Initialize;
    private bool _isBusy;
    private string _busyAction = string.Empty;
    private string _statusText = "等待开始";
    private string _errorText = string.Empty;

    private BriskPlayerMe _me;
    private BriskConfigCurrent _config;
    private IReadOnlyList<BriskAnnouncementItem> _announcements = Array.Empty<BriskAnnouncementItem>();
    private BriskAnnouncementItem _selectedAnnouncement;
    private IReadOnlyList<BriskLeaderboardEntry> _leaderboardEntries = Array.Empty<BriskLeaderboardEntry>();
    private BriskLeaderboardPlayerRank _leaderboardMe;
    private IReadOnlyList<BriskArchiveSlot> _archiveSlots = Array.Empty<BriskArchiveSlot>();
    private BriskArchiveMeta _archiveMeta;
    private BriskSpaceView _mySpaceView;
    private BriskSpaceStats _mySpaceStats;
    private IReadOnlyList<BriskSpaceLikeItem> _mySpaceLikes = Array.Empty<BriskSpaceLikeItem>();
    private BriskSpaceView _targetSpaceView;
    private BriskSpaceStats _targetSpaceStats;
    private string _targetSpaceContentText = string.Empty;
    private bool _viewAroundMe;
    private bool _showAnnouncementModal;
    private bool _viewingTargetSpace;

    private GUIStyle _pageStyle;
    private GUIStyle _cardStyle;
    private GUIStyle _titleStyle;
    private GUIStyle _sectionTitleStyle;
    private GUIStyle _bodyStyle;
    private GUIStyle _hintStyle;
    private GUIStyle _buttonStyle;
    private GUIStyle _primaryButtonStyle;
    private GUIStyle _dangerButtonStyle;
    private GUIStyle _inputStyle;
    private GUIStyle _textAreaStyle;
    private GUIStyle _statusStyle;
    private GUIStyle _listButtonStyle;
    private GUIStyle _modalStyle;
    private PropertyInfo _defaultDialogVisibleProperty;
    private MethodInfo _defaultDialogRenderMethod;

    private void OnEnable()
    {
        Brisk.OnInitialized += HandleInitialized;
        Brisk.OnLoggedIn += HandleLoggedIn;
        Brisk.OnLoggedOut += HandleLoggedOut;
        Brisk.OnAuthExpired += HandleAuthExpired;
        Brisk.OnBlockingError += HandleBlockingError;
    }

    private void OnDisable()
    {
        Brisk.OnInitialized -= HandleInitialized;
        Brisk.OnLoggedIn -= HandleLoggedIn;
        Brisk.OnLoggedOut -= HandleLoggedOut;
        Brisk.OnAuthExpired -= HandleAuthExpired;
        Brisk.OnBlockingError -= HandleBlockingError;
    }

    private void Start()
    {
        SyncPageBySdkState();
        if (AutoRunOnStart)
        {
            RunAction("自动冒烟", RunSmokeFlowAsync);
        }
    }

    private void OnGUI()
    {
        if (ShouldRouteInputToDefaultDialog())
        {
            RenderDefaultErrorDialogTopmost();
            return;
        }

        EnsureStyles();

        var scale = Mathf.Min(Screen.width / DesignWidth, Screen.height / DesignHeight);
        var offsetX = (Screen.width - (DesignWidth * scale)) * 0.5f;
        var offsetY = (Screen.height - (DesignHeight * scale)) * 0.5f;

        var previousMatrix = GUI.matrix;
        GUI.matrix = Matrix4x4.TRS(new Vector3(offsetX, offsetY, 0f), Quaternion.identity, new Vector3(scale, scale, 1f));

        GUI.Box(new Rect(0f, 0f, DesignWidth, DesignHeight), GUIContent.none);
        GUILayout.BeginArea(new Rect(0f, 0f, DesignWidth, DesignHeight));
        DrawCurrentPage();
        GUILayout.EndArea();

        if (_showAnnouncementModal && _selectedAnnouncement != null)
        {
            DrawAnnouncementModal();
        }

        if (_isBusy)
        {
            DrawBusyOverlay();
        }

        GUI.matrix = previousMatrix;

        RenderDefaultErrorDialogTopmost();
    }

    private bool ShouldRouteInputToDefaultDialog()
    {
        if (!IsDefaultErrorDialogVisible() || Event.current == null)
        {
            return false;
        }

        switch (Event.current.type)
        {
            case EventType.Layout:
            case EventType.Repaint:
                return false;
            default:
                return true;
        }
    }

    private bool IsDefaultErrorDialogVisible()
    {
        EnsureDefaultDialogReflection();
        return _defaultDialogVisibleProperty != null && (bool)_defaultDialogVisibleProperty.GetValue(null, null);
    }

    private void RenderDefaultErrorDialogTopmost()
    {
        EnsureDefaultDialogReflection();
        _defaultDialogRenderMethod?.Invoke(null, null);
    }

    private void EnsureDefaultDialogReflection()
    {
        if (_defaultDialogVisibleProperty != null && _defaultDialogRenderMethod != null)
        {
            return;
        }

        var dialogType = typeof(Brisk).Assembly.GetType("BriskDefaultErrorDialog");
        if (dialogType == null)
        {
            return;
        }

        _defaultDialogVisibleProperty = dialogType.GetProperty("IsVisible", BindingFlags.Static | BindingFlags.NonPublic);
        _defaultDialogRenderMethod = dialogType.GetMethod("RenderTopmostLegacyOverlay", BindingFlags.Static | BindingFlags.NonPublic);
    }

    private void DrawCurrentPage()
    {
        switch (_page)
        {
            case SamplePage.Initialize:
                DrawInitializePage();
                break;
            case SamplePage.Login:
                DrawLoginPage();
                break;
            case SamplePage.Home:
                DrawHomePage();
                break;
            case SamplePage.Announcements:
                DrawAnnouncementsPage();
                break;
            case SamplePage.Leaderboard:
                DrawLeaderboardPage();
                break;
            case SamplePage.Archive:
                DrawArchivePage();
                break;
            default:
                DrawSpacePage();
                break;
        }
    }

    private void DrawInitializePage()
    {
        var contentRect = DrawPageFrame("初始化", null, null);
        GUILayout.BeginArea(contentRect);
        _initScroll = GUILayout.BeginScrollView(_initScroll);

        DrawCard("当前配置", () =>
        {
            BaseUrl = DrawInputRow("服务地址", BaseUrl);
            GameKey = DrawInputRow("游戏 Key", GameKey);
            ClientVersion = DrawInputRow("客户端版本", ClientVersion);
            DeviceId = DrawInputRow("设备标识", DeviceId);
            ValidateSessionOnInitialize = DrawToggleRow("初始化时校验旧会话", ValidateSessionOnInitialize);
        });

        DrawCard("说明", () =>
        {
            GUILayout.Label("点击“初始化”后会直接调用 Brisk.InitializeAsync。", _bodyStyle);
            GUILayout.Label("成功时自动进入登录页；如果已恢复登录态，则直接进入主页。", _bodyStyle);
            GUILayout.Label("失败会停留在当前页，并把错误展示在底部状态栏。", _bodyStyle);
        });

        DrawCard("默认弹窗外观预览", () =>
        {
            GUILayout.Label("这些按钮只展示 SDK 默认弹窗外观，不会修改登录状态，也不会请求服务器。", _bodyStyle);
            DrawInlineButtons(
                new ButtonSpec("登录过期", PreviewAuthExpiredDialogAsync, false, true),
                new ButtonSpec("缺少 Token", PreviewMissingTokenDialogAsync, false, true));
            GUILayout.Space(8f);
            DrawInlineButtons(
                new ButtonSpec("服务维护", PreviewMaintenanceDialogAsync, false, true),
                new ButtonSpec("账号受限", PreviewAccountBannedDialogAsync, false, true),
                new ButtonSpec("需要更新", PreviewUpdateRequiredDialogAsync, false, true));
        });

        GUILayout.FlexibleSpace();
        GUILayout.EndScrollView();
        GUILayout.EndArea();

        DrawBottomButtons(
            new ButtonSpec("初始化", InitializeFlowAsync, true, true),
            new ButtonSpec("重新填写", ResetTransientStatusAsync, false, true));
    }

    private void DrawLoginPage()
    {
        var contentRect = DrawPageFrame("登录", "返回初始化", () => _page = SamplePage.Initialize);
        GUILayout.BeginArea(contentRect);
        _loginScroll = GUILayout.BeginScrollView(_loginScroll);

        DrawCard("登录信息", () =>
        {
            LoginProvider = DrawInputRow("登录提供方", LoginProvider);
            LoginUserId = DrawInputRow("用户 ID", LoginUserId);
            LoginCode = DrawInputRow("登录 Code（可选）", LoginCode);
            Nickname = DrawInputRow("昵称", Nickname);
            AvatarUrl = DrawInputRow("头像地址", AvatarUrl);
        });

        DrawCard("说明", () =>
        {
            GUILayout.Label("点击“登录”时：如果填写了 LoginCode，则优先走 code 登录；否则走用户 ID 登录。", _bodyStyle);
            GUILayout.Label("登录成功后自动拉取主页数据，并进入主页。", _bodyStyle);
        });

        GUILayout.EndScrollView();
        GUILayout.EndArea();

        DrawBottomButtons(new ButtonSpec("登录", LoginFlowAsync, true, true));
    }

    private void DrawHomePage()
    {
        var contentRect = DrawPageFrame("主页", "退出登录", () => RunAction("退出登录", LogoutFlowAsync));
        GUILayout.BeginArea(contentRect);
        _homeScroll = GUILayout.BeginScrollView(_homeScroll);

        DrawCard("当前用户状态", () =>
        {
            DrawValueRow("已初始化", Brisk.IsInitialized ? "是" : "否");
            DrawValueRow("已登录", Brisk.IsLoggedIn ? "是" : "否");
            DrawValueRow("PlayerId", NullToDash(Brisk.PlayerId));
            DrawValueRow("登录身份", Brisk.Identity == null ? "-" : Brisk.Identity.LoginProvider + " / " + Brisk.Identity.LoginUserId);
            DrawValueRow("昵称", _me == null ? "-" : NullToDash(_me.Nickname));
            DrawValueRow("项目账号", _me == null ? "-" : NullToDash(_me.ProjectAccountId));
        });

        DrawCard("动态配置", () =>
        {
            GUILayout.Label("FeatureFlags", _sectionTitleStyle);
            GUILayout.TextArea(FormatValue(_config == null ? null : _config.FeatureFlags), _textAreaStyle, GUILayout.Height(120f));
            GUILayout.Space(8f);
            GUILayout.Label("DynamicConfig", _sectionTitleStyle);
            GUILayout.TextArea(FormatValue(_config == null ? null : _config.DynamicConfig), _textAreaStyle, GUILayout.Height(160f));
        });

        DrawCard("快捷操作", () =>
        {
            DrawInlineButtons(
                new ButtonSpec("刷新主页数据", RefreshHomeAsync, false, true),
                new ButtonSpec("查看日志", ShowHomeLogsAsync, false, true));
        });

        GUILayout.EndScrollView();
        GUILayout.EndArea();

        DrawBottomNav(
            new NavSpec("公告", SamplePage.Announcements),
            new NavSpec("排行榜", SamplePage.Leaderboard),
            new NavSpec("云存档", SamplePage.Archive),
            new NavSpec("空间", SamplePage.Space));
    }

    private void DrawAnnouncementsPage()
    {
        var contentRect = DrawPageFrame("公告", "返回主页", () => _page = SamplePage.Home, "刷新", LoadAnnouncementsAsync);
        GUILayout.BeginArea(contentRect);
        _announcementScroll = GUILayout.BeginScrollView(_announcementScroll);

        if (_announcements.Count == 0)
        {
            DrawCard("公告列表", () => GUILayout.Label("暂无公告，点击右上角“刷新”获取。", _bodyStyle));
        }
        else
        {
            DrawCard("公告列表", () =>
            {
                for (var i = 0; i < _announcements.Count; i++)
                {
                    var item = _announcements[i];
                    var prefix = item.IsRead ? "[已读] " : "[未读] ";
                    if (GUILayout.Button(prefix + item.Title, _listButtonStyle, GUILayout.Height(58f)))
                    {
                        _selectedAnnouncement = item;
                        _showAnnouncementModal = true;
                    }
                }
            });
        }

        GUILayout.EndScrollView();
        GUILayout.EndArea();
    }

    private void DrawLeaderboardPage()
    {
        var contentRect = DrawPageFrame("排行榜", "返回主页", () => _page = SamplePage.Home);
        GUILayout.BeginArea(contentRect);
        _leaderboardScroll = GUILayout.BeginScrollView(_leaderboardScroll);

        DrawCard("排行榜配置", () =>
        {
            RankKey = DrawInputRow("排行榜 Key", RankKey);
            LeaderboardLimit = DrawInputRow("Top 数量", LeaderboardLimit);
            AroundMeRange = DrawInputRow("附近范围", AroundMeRange);
            DrawInlineButtons(
                new ButtonSpec("更新列表", RefreshLeaderboardAsync, false, true),
                new ButtonSpec(_viewAroundMe ? "切换到 Top" : "切换到我附近", ToggleLeaderboardModeAsync, false, true));
        });

        DrawCard("我的排名", () =>
        {
            DrawValueRow("当前模式", _viewAroundMe ? "我附近的排名" : "Top 排行榜");
            DrawValueRow("我的名次", _leaderboardMe == null ? "-" : _leaderboardMe.Rank.ToString());
            DrawValueRow("我的分数", _leaderboardMe == null ? "-" : _leaderboardMe.Score.ToString());
            DrawValueRow("当前待提交分数", SubmitScoreValue);
            DrawInlineButtons(new ButtonSpec("分数 +1 并提交", IncreaseAndSubmitScoreAsync, true, true));
        });

        DrawCard("排行榜列表", () =>
        {
            if (_leaderboardEntries.Count == 0)
            {
                GUILayout.Label("暂无数据，请先点击“更新列表”。", _bodyStyle);
                return;
            }

            for (var i = 0; i < _leaderboardEntries.Count; i++)
            {
                var entry = _leaderboardEntries[i];
                GUILayout.BeginVertical(_cardStyle);
                GUILayout.Label("#" + entry.Rank + "  " + NullToDash(entry.Nickname), _sectionTitleStyle);
                GUILayout.Label("PlayerId: " + NullToDash(entry.PlayerId), _bodyStyle);
                GUILayout.Label("分数: " + entry.Score, _bodyStyle);
                GUILayout.EndVertical();
            }
        });

        GUILayout.EndScrollView();
        GUILayout.EndArea();
    }

    private void DrawArchivePage()
    {
        var contentRect = DrawPageFrame("云存档", "返回主页", () => _page = SamplePage.Home);
        GUILayout.BeginArea(contentRect);
        _archiveScroll = GUILayout.BeginScrollView(_archiveScroll);

        DrawCard("槽位与操作", () =>
        {
            ArchiveSlotNo = DrawInputRow("槽位号", ArchiveSlotNo);
            ArchiveBaseVersion = DrawInputRow("基准版本", ArchiveBaseVersion);
            DrawInlineButtons(
                new ButtonSpec("获取槽位列表", GetArchiveSlotsAsync, false, true),
                new ButtonSpec("获取元信息", GetArchiveMetaAsync, false, true),
                new ButtonSpec("下载存档", DownloadArchiveAsync, false, true),
                new ButtonSpec("上传存档", UploadArchiveAsync, true, true));
        });

        DrawCard("文本存档内容", () =>
        {
            ArchiveContent = GUILayout.TextArea(ArchiveContent ?? string.Empty, _textAreaStyle, GUILayout.Height(260f));
        });

        DrawCard("槽位列表", () =>
        {
            if (_archiveSlots.Count == 0)
            {
                GUILayout.Label("暂无槽位数据。", _bodyStyle);
            }
            else
            {
                for (var i = 0; i < _archiveSlots.Count; i++)
                {
                    var slot = _archiveSlots[i];
                    GUILayout.Label("槽位 " + slot.SlotNo + " | version " + slot.Version + " | " + slot.SizeBytes + " bytes", _bodyStyle);
                }
            }

            GUILayout.Space(8f);
            GUILayout.Label("当前元信息", _sectionTitleStyle);
            GUILayout.TextArea(FormatValue(_archiveMeta), _textAreaStyle, GUILayout.Height(120f));
        });

        GUILayout.EndScrollView();
        GUILayout.EndArea();
    }

    private void DrawSpacePage()
    {
        var title = _viewingTargetSpace ? "TA 的空间" : "我的空间";
        var backLabel = _viewingTargetSpace ? "返回我的空间" : "返回主页";
        Action backAction = () =>
        {
            if (_viewingTargetSpace)
            {
                _viewingTargetSpace = false;
                _targetSpaceView = null;
                _targetSpaceStats = null;
                _targetSpaceContentText = string.Empty;
                return;
            }

            _page = SamplePage.Home;
        };

        var contentRect = DrawPageFrame(title, backLabel, backAction, "刷新", RefreshSpacePageAsync);
        GUILayout.BeginArea(contentRect);
        _spaceScroll = GUILayout.BeginScrollView(_spaceScroll);

        if (_viewingTargetSpace)
        {
            DrawTargetSpaceContent();
        }
        else
        {
            DrawMySpaceContent();
        }

        GUILayout.EndScrollView();
        GUILayout.EndArea();
    }

    private void DrawMySpaceContent()
    {
        DrawCard("我的空间内容", () =>
        {
            GUILayout.Label("当前空间文本", _sectionTitleStyle);
            SpacePayloadText = GUILayout.TextArea(SpacePayloadText ?? string.Empty, _textAreaStyle, GUILayout.Height(240f));
            DrawInlineButtons(
                new ButtonSpec("更新我的空间", UpdateMySpaceAsync, true, true),
                new ButtonSpec("重新拉取我的空间", LoadMySpaceAsync, false, true));
        });

        DrawCard("我的空间状态", () =>
        {
            DrawValueRow("我的 PlayerId", NullToDash(Brisk.PlayerId));
            DrawValueRow("昵称", _mySpaceView == null ? "-" : NullToDash(_mySpaceView.Nickname));
            DrawValueRow("内容版本", _mySpaceView == null ? "-" : _mySpaceView.ContentVersion.ToString());
            DrawValueRow("内容类型", _mySpaceView == null ? "-" : NullToDash(_mySpaceView.ContentType));
            DrawValueRow("内容大小", _mySpaceView == null ? "-" : _mySpaceView.ContentSizeBytes + " bytes");
            DrawValueRow("累计点赞数", _mySpaceStats == null ? "-" : _mySpaceStats.LikeCount.ToString());
            DrawValueRow("今日点赞数", _mySpaceStats == null ? "-" : _mySpaceStats.TodayLikeCount.ToString());
            DrawValueRow("访问数", _mySpaceStats == null ? "-" : _mySpaceStats.VisitCount.ToString());
            DrawValueRow("今日点赞重置", _mySpaceStats == null ? "-" : FormatLikeResetAt(_mySpaceStats.LikeResetAt));
            DrawValueRow("更新时间", _mySpaceView == null ? "-" : NullToDash(_mySpaceView.UpdatedAt));
            GUILayout.Space(8f);
            GUILayout.Label("今天给我点赞的用户", _sectionTitleStyle);
            if (_mySpaceLikes.Count == 0)
            {
                GUILayout.Label("当前周期暂无点赞记录。", _bodyStyle);
            }
            else
            {
                for (var i = 0; i < _mySpaceLikes.Count; i++)
                {
                    var item = _mySpaceLikes[i];
                    GUILayout.Label(NullToDash(item.Nickname) + " | " + NullToDash(item.PlayerId), _bodyStyle);
                }
            }
        });

        DrawCard("访问其他用户空间", () =>
        {
            SpacePlayerId = DrawInputRow("目标用户 PlayerId", SpacePlayerId);
            DrawInlineButtons(new ButtonSpec("前往该用户空间", VisitTargetSpaceAsync, true, true));
        });
    }

    private void DrawTargetSpaceContent()
    {
        DrawCard("TA 的空间内容", () =>
        {
            DrawValueRow("昵称", _targetSpaceView == null ? "-" : NullToDash(_targetSpaceView.Nickname));
            DrawValueRow("PlayerId", _targetSpaceView == null ? "-" : NullToDash(_targetSpaceView.PlayerId));
            DrawValueRow("内容类型", _targetSpaceView == null ? "-" : NullToDash(_targetSpaceView.ContentType));
            DrawValueRow("内容大小", _targetSpaceView == null ? "-" : _targetSpaceView.ContentSizeBytes + " bytes");
            DrawValueRow("累计点赞数", _targetSpaceStats == null ? "-" : _targetSpaceStats.LikeCount.ToString());
            DrawValueRow("今日点赞数", _targetSpaceStats == null ? "-" : _targetSpaceStats.TodayLikeCount.ToString());
            DrawValueRow("访问数", _targetSpaceStats == null ? "-" : _targetSpaceStats.VisitCount.ToString());
            DrawValueRow("今日点赞状态", _targetSpaceView != null && _targetSpaceView.LikedByMe ? "今日已点赞" : "今日未点赞");
            DrawValueRow("今日点赞重置", _targetSpaceView == null ? "-" : FormatLikeResetAt(_targetSpaceView.LikeResetAt));
            GUILayout.Space(8f);
            GUILayout.Label("空间内容", _sectionTitleStyle);
            GUILayout.TextArea(_targetSpaceContentText ?? string.Empty, _textAreaStyle, GUILayout.Height(240f));
        });

        DrawCard("操作", () =>
        {
            DrawInlineButtons(
                new ButtonSpec("今日点赞", LikeTargetSpaceAsync, false, _targetSpaceView != null && !_targetSpaceView.LikedByMe),
                new ButtonSpec("撤销今日点赞", UnlikeTargetSpaceAsync, false, _targetSpaceView != null && _targetSpaceView.LikedByMe));
        });
    }

    private async Task InitializeFlowAsync()
    {
        await Brisk.InitializeAsync(new BriskOptions
        {
            BaseUrl = BaseUrl,
            GameKey = GameKey,
            ClientVersion = ClientVersion,
            DeviceId = DeviceId,
            ValidateSessionOnInitialize = ValidateSessionOnInitialize,
            ExitHandler = HandleExitRequested
        });

        _page = Brisk.IsLoggedIn ? SamplePage.Home : SamplePage.Login;
        if (Brisk.IsLoggedIn)
        {
            await RefreshHomeAsync();
        }
    }

    private async Task LoginFlowAsync()
    {
        if (string.IsNullOrWhiteSpace(LoginCode))
        {
            await Brisk.Auth.LoginWithUserIdAsync(LoginProvider, LoginUserId, CreateProfile());
        }
        else
        {
            await Brisk.Auth.LoginWithCodeAsync(LoginProvider, LoginCode, CreateProfile());
        }

        await RefreshHomeAsync();
        _page = SamplePage.Home;
    }

    private Task PreviewAuthExpiredDialogAsync()
    {
        BriskDefaultErrorPresenter.Instance.ShowAuthExpired(new BriskAuthExpiredException("invalid token"));
        return Task.CompletedTask;
    }

    private Task PreviewMissingTokenDialogAsync()
    {
        BriskDefaultErrorPresenter.Instance.ShowAuthExpired(new BriskAuthExpiredException("Missing access token."));
        return Task.CompletedTask;
    }

    private Task PreviewMaintenanceDialogAsync()
    {
        BriskDefaultErrorPresenter.Instance.ShowBlockingError(new BriskMaintenanceException("maintenance"));
        return Task.CompletedTask;
    }

    private Task PreviewAccountBannedDialogAsync()
    {
        BriskDefaultErrorPresenter.Instance.ShowBlockingError(new BriskAccountBannedException("account banned"));
        return Task.CompletedTask;
    }

    private Task PreviewUpdateRequiredDialogAsync()
    {
        BriskDefaultErrorPresenter.Instance.ShowBlockingError(new BriskClientUpdateRequiredException("client update required"));
        return Task.CompletedTask;
    }

    private async Task RefreshHomeAsync()
    {
        _me = await Brisk.Player.GetMeAsync();
        _config = await Brisk.Config.GetCurrentAsync();
        ApplyIdentity(_me.PlayerId, _me.LoginProvider, _me.LoginUserId);
        await LoadMySpaceAsync();
    }

    private async Task LoadAnnouncementsAsync()
    {
        _announcements = await Brisk.Announcements.GetListAsync();
        if (_announcements.Count > 0)
        {
            AnnouncementId = _announcements[0].Id.ToString();
        }
    }

    private async Task RefreshLeaderboardAsync()
    {
        _leaderboardMe = await Brisk.Leaderboard.GetMeAsync(RankKey);
        SubmitScoreValue = (_leaderboardMe == null ? 0L : _leaderboardMe.Score).ToString();
        _leaderboardEntries = _viewAroundMe
            ? await Brisk.Leaderboard.GetAroundMeAsync(RankKey, ParseOrDefault(AroundMeRange, 5))
            : await Brisk.Leaderboard.GetTopAsync(RankKey, ParseOrDefault(LeaderboardLimit, 10));
    }

    private async Task ToggleLeaderboardModeAsync()
    {
        _viewAroundMe = !_viewAroundMe;
        await RefreshLeaderboardAsync();
    }

    private async Task IncreaseAndSubmitScoreAsync()
    {
        var score = ParseOrDefault(SubmitScoreValue, 0) + 1;
        SubmitScoreValue = score.ToString();
        await Brisk.Leaderboard.SubmitScoreAsync(RankKey, score);
        await RefreshLeaderboardAsync();
    }

    private async Task GetArchiveSlotsAsync()
    {
        _archiveSlots = await Brisk.Archive.GetSlotsAsync();
    }

    private async Task GetArchiveMetaAsync()
    {
        _archiveMeta = await Brisk.Archive.GetMetaAsync(ParseRequiredInt(ArchiveSlotNo, nameof(ArchiveSlotNo)));
        ArchiveBaseVersion = _archiveMeta == null ? ArchiveBaseVersion : _archiveMeta.Version.ToString();
    }

    private async Task DownloadArchiveAsync()
    {
        var result = await Brisk.Archive.DownloadAsync(ParseRequiredInt(ArchiveSlotNo, nameof(ArchiveSlotNo)));
        ArchiveBaseVersion = result == null ? ArchiveBaseVersion : result.Version.ToString();
        ArchiveContent = await Brisk.Archive.DownloadTextAsync(ParseRequiredInt(ArchiveSlotNo, nameof(ArchiveSlotNo)));
        await GetArchiveMetaAsync();
    }

    private async Task UploadArchiveAsync()
    {
        var baseVersion = ParseNullableInt(ArchiveBaseVersion);
        var result = await Brisk.Archive.UploadTextAsync(ParseRequiredInt(ArchiveSlotNo, nameof(ArchiveSlotNo)), ArchiveContent ?? string.Empty, baseVersion);
        ArchiveBaseVersion = result == null ? ArchiveBaseVersion : result.Version.ToString();
        await GetArchiveSlotsAsync();
        await GetArchiveMetaAsync();
    }

    private async Task LoadMySpaceAsync()
    {
        if (string.IsNullOrWhiteSpace(Brisk.PlayerId))
        {
            return;
        }

        _mySpaceView = await Brisk.Space.GetByPlayerIdAsync(Brisk.PlayerId);
        _mySpaceStats = await Brisk.Space.GetStatsByPlayerIdAsync(Brisk.PlayerId);
        _mySpaceLikes = await Brisk.Space.GetLikesByPlayerIdAsync(Brisk.PlayerId, 10, true);
        SpacePayloadText = await DownloadSpaceTextAsync(_mySpaceView, () => Brisk.Space.DownloadContentByPlayerIdAsync(Brisk.PlayerId));
    }

    private async Task RefreshSpacePageAsync()
    {
        if (_viewingTargetSpace)
        {
            await LoadTargetSpaceAsync();
            return;
        }

        await LoadMySpaceAsync();
    }

    private async Task UpdateMySpaceAsync()
    {
        var baseVersion = _mySpaceView != null && _mySpaceView.ContentExists ? _mySpaceView.ContentVersion : 0L;
        await Brisk.Space.UpdateMyAsync(SpacePayloadText ?? string.Empty, baseVersion, "text/plain");
        await LoadMySpaceAsync();
    }

    private async Task VisitTargetSpaceAsync()
    {
        await LoadTargetSpaceAsync();
        _viewingTargetSpace = true;
    }

    private async Task LoadTargetSpaceAsync()
    {
        _targetSpaceView = await Brisk.Space.GetByPlayerIdAsync(SpacePlayerId);
        _targetSpaceStats = await Brisk.Space.GetStatsByPlayerIdAsync(SpacePlayerId);
        _targetSpaceContentText = await DownloadSpaceTextAsync(_targetSpaceView, () => Brisk.Space.DownloadContentByPlayerIdAsync(SpacePlayerId));
    }

    private async Task LikeTargetSpaceAsync()
    {
        var result = await Brisk.Space.LikeByPlayerIdAsync(SpacePlayerId);
        Log("空间今日点赞结果: created=" + result.Created + ", total=" + result.LikeCount + ", today=" + result.TodayLikeCount);
        await LoadTargetSpaceAsync();
    }

    private async Task UnlikeTargetSpaceAsync()
    {
        var result = await Brisk.Space.UnlikeByPlayerIdAsync(SpacePlayerId);
        Log("空间撤销今日点赞结果: total=" + result.LikeCount + ", today=" + result.TodayLikeCount);
        await LoadTargetSpaceAsync();
    }

    private async Task LogoutFlowAsync()
    {
        await Brisk.Auth.LogoutAsync();
        _page = SamplePage.Login;
    }

    private Task ResetTransientStatusAsync()
    {
        _statusText = "等待开始";
        _errorText = string.Empty;
        return Task.CompletedTask;
    }

    private Task ShowHomeLogsAsync()
    {
        _errorText = string.Join("\n", _logs.ToArray());
        return Task.CompletedTask;
    }

    private async Task RunSmokeFlowAsync()
    {
        await InitializeFlowAsync();
        if (!Brisk.IsLoggedIn)
        {
            await LoginFlowAsync();
        }
    }

    private void DrawAnnouncementModal()
    {
        GUI.color = new Color(0f, 0f, 0f, 0.55f);
        GUI.Box(new Rect(0f, 0f, DesignWidth, DesignHeight), GUIContent.none);
        GUI.color = Color.white;

        var modalRect = new Rect(48f, 180f, DesignWidth - 96f, DesignHeight - 360f);
        GUILayout.BeginArea(modalRect, GUI.skin.box);
        GUILayout.Label(_selectedAnnouncement.Title, _titleStyle);
        GUILayout.Label("开始: " + NullToDash(_selectedAnnouncement.StartAt), _bodyStyle);
        GUILayout.Label("结束: " + NullToDash(_selectedAnnouncement.EndAt), _bodyStyle);
        GUILayout.Label("状态: " + (_selectedAnnouncement.IsRead ? "已读" : "未读"), _bodyStyle);
        GUILayout.Space(8f);
        _modalScroll = GUILayout.BeginScrollView(_modalScroll, GUILayout.Height(520f));
        GUILayout.TextArea(NullToDash(_selectedAnnouncement.Content), _textAreaStyle, GUILayout.ExpandHeight(true));
        GUILayout.EndScrollView();
        GUILayout.Space(10f);
        DrawInlineButtons(
            new ButtonSpec("标记已读", MarkSelectedAnnouncementAsync, false, true),
            new ButtonSpec("关闭", CloseAnnouncementModalAsync, false, true));
        GUILayout.EndArea();
    }

    private Task CloseAnnouncementModalAsync()
    {
        _showAnnouncementModal = false;
        return Task.CompletedTask;
    }

    private async Task MarkSelectedAnnouncementAsync()
    {
        if (_selectedAnnouncement == null)
        {
            return;
        }

        await Brisk.Announcements.MarkReadAsync(_selectedAnnouncement.Id);
        _selectedAnnouncement.IsRead = true;
        await LoadAnnouncementsAsync();
        _showAnnouncementModal = false;
    }

    private void DrawBusyOverlay()
    {
        GUI.color = new Color(0f, 0f, 0f, 0.35f);
        GUI.Box(new Rect(0f, 0f, DesignWidth, DesignHeight), GUIContent.none);
        GUI.color = Color.white;
        GUI.Box(new Rect(180f, 580f, 360f, 120f), "正在处理: " + _busyAction);
    }

    private Rect DrawPageFrame(string title, string backLabel, Action backAction, string rightLabel = null, Func<Task> rightAction = null)
    {
        var outerRect = new Rect(20f, 20f, DesignWidth - 40f, DesignHeight - 40f);
        GUI.Box(outerRect, GUIContent.none, _pageStyle);

        var headerRect = new Rect(outerRect.x + 20f, outerRect.y + 16f, outerRect.width - 40f, 70f);
        GUILayout.BeginArea(headerRect);
        GUILayout.BeginHorizontal();
        if (!string.IsNullOrWhiteSpace(backLabel))
        {
            DrawHeaderButton(backLabel, backAction);
        }
        else
        {
            GUILayout.Space(150f);
        }

        GUILayout.FlexibleSpace();
        GUILayout.Label(title, _titleStyle, GUILayout.Height(48f));
        GUILayout.FlexibleSpace();
        if (!string.IsNullOrWhiteSpace(rightLabel) && rightAction != null)
        {
            DrawHeaderButton(rightLabel, () => RunAction(rightLabel, rightAction));
        }
        else
        {
            GUILayout.Space(150f);
        }

        GUILayout.EndHorizontal();
        GUILayout.EndArea();

        var statusRect = new Rect(outerRect.x + 20f, headerRect.yMax + 6f, outerRect.width - 40f, 74f);
        GUI.Box(statusRect, GUIContent.none, _cardStyle);
        GUILayout.BeginArea(new Rect(statusRect.x + 12f, statusRect.y + 10f, statusRect.width - 24f, statusRect.height - 20f));
        GUILayout.Label("状态: " + _statusText, _statusStyle);
        GUILayout.Label("错误: " + (string.IsNullOrWhiteSpace(_errorText) ? "无" : _errorText), _hintStyle);
        GUILayout.EndArea();

        return new Rect(outerRect.x + 20f, statusRect.yMax + 12f, outerRect.width - 40f, outerRect.height - 250f);
    }

    private void DrawBottomButtons(params ButtonSpec[] buttons)
    {
        var rect = new Rect(40f, DesignHeight - 170f, DesignWidth - 80f, 110f);
        GUILayout.BeginArea(rect);
        DrawInlineButtons(buttons);
        GUILayout.EndArea();
    }

    private void DrawBottomNav(params NavSpec[] items)
    {
        var rect = new Rect(30f, DesignHeight - 170f, DesignWidth - 60f, 110f);
        GUI.Box(new Rect(rect.x, rect.y, rect.width, rect.height), GUIContent.none, _cardStyle);
        GUILayout.BeginArea(new Rect(rect.x + 10f, rect.y + 10f, rect.width - 20f, rect.height - 20f));
        GUILayout.BeginHorizontal();
        for (var i = 0; i < items.Length; i++)
        {
            var item = items[i];
            if (GUILayout.Button(item.Label, _primaryButtonStyle, GUILayout.Height(64f), GUILayout.Width(150f)))
            {
                _page = item.Page;
                if (item.Page == SamplePage.Announcements)
                {
                    RunAction("加载公告", LoadAnnouncementsAsync);
                }
                else if (item.Page == SamplePage.Leaderboard)
                {
                    RunAction("加载排行榜", RefreshLeaderboardAsync);
                }
                else if (item.Page == SamplePage.Archive)
                {
                    RunAction("加载存档", GetArchiveSlotsAsync);
                }
                else if (item.Page == SamplePage.Space)
                {
                    RunAction("加载空间", LoadMySpaceAsync);
                }
            }
        }

        GUILayout.EndHorizontal();
        GUILayout.EndArea();
    }

    private void DrawHeaderButton(string label, Action action)
    {
        if (GUILayout.Button(label, _buttonStyle, GUILayout.Width(150f), GUILayout.Height(42f)))
        {
            action();
        }
    }

    private void DrawInlineButtons(params ButtonSpec[] buttons)
    {
        GUILayout.BeginHorizontal();
        for (var i = 0; i < buttons.Length; i++)
        {
            var button = buttons[i];
            var previous = GUI.enabled;
            GUI.enabled = previous && !_isBusy && button.Enabled;
            var style = button.Primary ? _primaryButtonStyle : _buttonStyle;
            if (GUILayout.Button(button.Label, style, GUILayout.Height(56f)))
            {
                RunAction(button.Label, button.Action);
            }

            GUI.enabled = previous;
        }

        GUILayout.EndHorizontal();
    }

    private void DrawCard(string title, Action content)
    {
        GUILayout.BeginVertical(_cardStyle);
        GUILayout.Label(title, _sectionTitleStyle);
        GUILayout.Space(6f);
        content();
        GUILayout.EndVertical();
        GUILayout.Space(12f);
    }

    private string DrawInputRow(string label, string value)
    {
        GUILayout.Label(label, _hintStyle);
        return GUILayout.TextField(value ?? string.Empty, _inputStyle, GUILayout.Height(48f));
    }

    private bool DrawToggleRow(string label, bool value)
    {
        GUILayout.Label(label, _hintStyle);
        return GUILayout.Toggle(value, value ? "开启" : "关闭", GUILayout.Height(42f));
    }

    private void DrawValueRow(string label, string value)
    {
        GUILayout.BeginHorizontal();
        GUILayout.Label(label, _hintStyle, GUILayout.Width(180f));
        GUILayout.Label(value, _bodyStyle);
        GUILayout.EndHorizontal();
    }

    private void RunAction(string actionName, Func<Task> action)
    {
        if (_isBusy)
        {
            return;
        }

        RunActionInternal(actionName, action);
    }

    private async void RunActionInternal(string actionName, Func<Task> action)
    {
        _isBusy = true;
        _busyAction = actionName;
        _statusText = "执行中: " + actionName;
        _errorText = string.Empty;
        Log("开始执行: " + actionName);

        try
        {
            await action();
            _statusText = "执行成功: " + actionName;
            Log("执行成功: " + actionName);
        }
        catch (Exception exception)
        {
            _statusText = "执行失败: " + actionName;
            _errorText = FormatException(exception);
            Log("执行失败: " + actionName + " | " + exception.Message);
            Debug.LogException(exception, this);
        }
        finally
        {
            _busyAction = string.Empty;
            _isBusy = false;
        }
    }

    private void SyncPageBySdkState()
    {
        if (!Brisk.IsInitialized)
        {
            _page = SamplePage.Initialize;
            return;
        }

        _page = Brisk.IsLoggedIn ? SamplePage.Home : SamplePage.Login;
    }

    private void HandleInitialized()
    {
        SyncPageBySdkState();
        Log("事件: 初始化完成");
    }

    private void HandleLoggedIn()
    {
        SyncPageBySdkState();
        Log("事件: 登录完成");
    }

    private void HandleLoggedOut()
    {
        SyncPageBySdkState();
        Log("事件: 登出完成");
    }

    private void HandleAuthExpired(BriskAuthExpiredException exception)
    {
        _page = SamplePage.Login;
        Log("事件: 登录态失效 | " + exception.Message);
    }

    private void HandleBlockingError(BriskBlockingException exception)
    {
        Log("事件: 阻断错误 | " + exception.Message);
    }

    private void HandleExitRequested()
    {
        Log("Brisk 请求退出。");
    }

    private void Log(string message)
    {
        _logs.Add("[" + DateTime.Now.ToString("HH:mm:ss") + "] " + message);
        if (_logs.Count > 80)
        {
            _logs.RemoveAt(0);
        }
    }

    private BriskProfile CreateProfile()
    {
        return new BriskProfile
        {
            Nickname = Nickname,
            AvatarUrl = AvatarUrl
        };
    }

    private void ApplyIdentity(string playerId, string loginProvider, string loginUserId)
    {
        if (!string.IsNullOrWhiteSpace(playerId))
        {
            SpacePlayerId = playerId;
        }

        if (!string.IsNullOrWhiteSpace(loginProvider))
        {
            SpaceLoginProvider = loginProvider;
            LoginProvider = loginProvider;
        }

        if (!string.IsNullOrWhiteSpace(loginUserId))
        {
            SpaceLoginUserId = loginUserId;
            LoginUserId = loginUserId;
        }
    }

    private void EnsureStyles()
    {
        if (_pageStyle != null)
        {
            return;
        }

        _pageStyle = new GUIStyle(GUI.skin.box)
        {
            padding = new RectOffset(18, 18, 18, 18)
        };

        _cardStyle = new GUIStyle(GUI.skin.box)
        {
            padding = new RectOffset(16, 16, 14, 14),
            margin = new RectOffset(0, 0, 0, 0)
        };

        _titleStyle = new GUIStyle(GUI.skin.label)
        {
            fontSize = 28,
            fontStyle = FontStyle.Bold,
            alignment = TextAnchor.MiddleCenter,
            wordWrap = true
        };

        _sectionTitleStyle = new GUIStyle(GUI.skin.label)
        {
            fontSize = 18,
            fontStyle = FontStyle.Bold,
            wordWrap = true
        };

        _bodyStyle = new GUIStyle(GUI.skin.label)
        {
            fontSize = 16,
            wordWrap = true
        };

        _hintStyle = new GUIStyle(GUI.skin.label)
        {
            fontSize = 14,
            wordWrap = true
        };

        _statusStyle = new GUIStyle(_bodyStyle)
        {
            fontStyle = FontStyle.Bold
        };

        _buttonStyle = new GUIStyle(GUI.skin.button)
        {
            fontSize = 16,
            fontStyle = FontStyle.Bold,
            wordWrap = true
        };

        _primaryButtonStyle = new GUIStyle(_buttonStyle);
        _dangerButtonStyle = new GUIStyle(_buttonStyle);
        _inputStyle = new GUIStyle(GUI.skin.textField) { fontSize = 16 };
        _textAreaStyle = new GUIStyle(GUI.skin.textArea) { fontSize = 15, wordWrap = true };
        _listButtonStyle = new GUIStyle(GUI.skin.button) { fontSize = 16, alignment = TextAnchor.MiddleLeft, wordWrap = true };
        _modalStyle = new GUIStyle(GUI.skin.box) { padding = new RectOffset(20, 20, 20, 20) };
    }

    private static int ParseRequiredInt(string value, string fieldName)
    {
        if (!int.TryParse(value, out var result))
        {
            throw new InvalidOperationException(fieldName + " 必须是合法整数。");
        }

        return result;
    }

    private static int ParseOrDefault(string value, int fallback)
    {
        return int.TryParse(value, out var result) ? result : fallback;
    }

    private static int? ParseNullableInt(string value)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return null;
        }

        return int.TryParse(value, out var result) ? result : (int?)null;
    }

    private static string NullToDash(string value)
    {
        return string.IsNullOrWhiteSpace(value) ? "-" : value;
    }

    private static string FormatLikeResetAt(string value)
    {
        if (string.IsNullOrWhiteSpace(value))
        {
            return "-";
        }

        DateTimeOffset parsed;
        if (!DateTimeOffset.TryParse(value, out parsed))
        {
            return value;
        }

        return parsed.LocalDateTime.ToString("yyyy-MM-dd HH:mm:ss");
    }

    private static async Task<string> DownloadSpaceTextAsync(BriskSpaceView view, Func<Task<BriskSpaceContentDownloadResult>> downloadContent)
    {
        if (view == null || !view.ContentExists || downloadContent == null)
        {
            return string.Empty;
        }

        var content = await downloadContent();
        if (content == null || content.Bytes == null || content.Bytes.Length == 0)
        {
            return string.Empty;
        }

        return Encoding.UTF8.GetString(content.Bytes);
    }

    private static string FormatException(Exception exception)
    {
        if (exception == null)
        {
            return "未知错误";
        }

        var builder = new StringBuilder();
        var current = exception;
        while (current != null)
        {
            builder.AppendLine(current.GetType().Name + ": " + current.Message);
            current = current.InnerException;
        }

        return builder.ToString().TrimEnd();
    }

    private static string FormatValue(object value)
    {
        var builder = new StringBuilder();
        AppendValue(builder, value, 0, 0);
        return builder.Length == 0 ? "-" : builder.ToString().TrimEnd();
    }

    private static void AppendValue(StringBuilder builder, object value, int indent, int depth)
    {
        if (depth > 5)
        {
            builder.AppendLine(new string(' ', indent) + "...");
            return;
        }

        if (value == null)
        {
            builder.AppendLine(new string(' ', indent) + "null");
            return;
        }

        if (value is string stringValue)
        {
            builder.AppendLine(new string(' ', indent) + stringValue);
            return;
        }

        if (value is IDictionary dictionary)
        {
            foreach (DictionaryEntry entry in dictionary)
            {
                builder.AppendLine(new string(' ', indent) + entry.Key + ":");
                AppendValue(builder, entry.Value, indent + 2, depth + 1);
            }
            return;
        }

        if (value is IEnumerable enumerable && !(value is byte[]))
        {
            var index = 0;
            foreach (var item in enumerable)
            {
                builder.AppendLine(new string(' ', indent) + "[" + index + "]");
                AppendValue(builder, item, indent + 2, depth + 1);
                index++;
            }
            return;
        }

        var type = value.GetType();
        if (type.IsPrimitive || value is decimal)
        {
            builder.AppendLine(new string(' ', indent) + value);
            return;
        }

        var fields = type.GetFields(BindingFlags.Instance | BindingFlags.Public);
        foreach (var field in fields)
        {
            builder.AppendLine(new string(' ', indent) + field.Name + ":");
            AppendValue(builder, field.GetValue(value), indent + 2, depth + 1);
        }
    }

    private readonly struct ButtonSpec
    {
        public ButtonSpec(string label, Func<Task> action, bool primary, bool enabled)
        {
            Label = label;
            Action = action;
            Primary = primary;
            Enabled = enabled;
        }

        public string Label { get; }
        public Func<Task> Action { get; }
        public bool Primary { get; }
        public bool Enabled { get; }
    }

    private readonly struct NavSpec
    {
        public NavSpec(string label, SamplePage page)
        {
            Label = label;
            Page = page;
        }

        public string Label { get; }
        public SamplePage Page { get; }
    }
}