onecmonitor/oneswiss-server/Components/Layout/MainLayout.razor

@using System.Reflection
@using Microsoft.AspNetCore.Components.Authorization
@using Microsoft.AspNetCore.Identity
@using Microsoft.AspNetCore.SignalR.Client
@using MudBlazor.StaticInput
@using OneSwiss.Server.Models
@using OneSwiss.Server.Services
@inherits LayoutComponentBase
@inject ISnackbar SnackbarService
@inject IHttpContextAccessor ContextAccessor
@inject UpdatesChecker.State UpdatesCheckerState
@inject NavigationManager NavManager
@inject UserManager<ApplicationUser> UserManager
@inject IJSRuntime Js

<script>
    window.blazorSetCookie = (name, value, days, secure) => {
        const secureStr = secure ? ';secure' : '';
        const expires = new Date();
        expires.setTime(expires.getTime() + (days * 24 * 60 * 60 * 1000));
        document.cookie = `${name}=${value};expires=${expires.toUTCString()};path=/${secureStr};samesite=strict`;
    };
</script>

<MudThemeProvider @bind-IsDarkMode="@_isDarkMode" Theme="_theme"/>
<MudPopoverProvider/>
<MudDialogProvider/>
<MudSnackbarProvider/>

<MudLayout>
    <MudAppBar Elevation="1">
        <AuthorizeView>
            <MudStaticNavDrawerToggle DrawerId="nav-drawer" Icon="@Icons.Material.Filled.Menu" Color="Color.Inherit"
                                      Edge="Edge.Start"/>
            <AppLabel/>
        </AuthorizeView>
        <MudSpacer/>
        <AuthorizeView>
            @if (UpdatesCheckerState.UpdatesAvailable)
            {
                var text = UpdatesCheckerState?.ReleaseInfo?.Prerelease == true ? "Доступно обновление (pre)" : "Доступно обновление";
                <MudButton Variant="Variant.Outlined" Size="Size.Small" Color="Color.Warning"
                           OnClick="GoToReleasePage">@text</MudButton>
            }
            <MudText Class="ms-3">@_user?.ToString()</MudText>
            <MudSwitch
                Color="Color.Primary"
                @bind-Value="_isDarkMode"
                @bind-Value:after="OnChangeTheme"
                ThumbIcon="@(_isDarkMode ? Icons.Material.Outlined.LightMode : Icons.Material.Outlined.DarkMode)"/>
        </AuthorizeView>
        <MudText>@Assembly.GetExecutingAssembly().GetName().Version</MudText>
    </MudAppBar>
    <AuthorizeView>
        <MudDrawer id="nav-drawer" @bind-Open="_drawerOpen" ClipMode="DrawerClipMode.Always" Elevation="2">
            <NavMenu @ref="_navMenu"/>
        </MudDrawer>
    </AuthorizeView>
    <CascadingValue Name="NavMenu" Value="_navMenu">
        <MudMainContent Class="pt-16 pa-5">
            @Body
        </MudMainContent>
    </CascadingValue>
</MudLayout>

<div id="blazor-error-ui" data-nosnippet>
    An unhandled error has occurred.
    <a href="." class="reload">Reload</a>
    <span class="dismiss">🗙</span>
</div>

@code {
    private HubConnection? _hubConnection;
    bool _isDarkMode = true;
    NavMenu? _navMenu;
    bool _drawerOpen = true;
    readonly MudTheme _theme = new();
    private ApplicationUser? _user;

    protected override async Task OnInitializedAsync()
    {
        if (ContextAccessor.HttpContext != null)
            _user = await UserManager.GetUserAsync(ContextAccessor.HttpContext.User);

        SnackbarService.Configuration.PositionClass = Defaults.Classes.Position.BottomEnd;

        if (ContextAccessor.HttpContext?.Request.Cookies.TryGetValue("IsDarkMode", out var value) == true &&
            bool.TryParse(value, out var isDarkMode))
            _isDarkMode = isDarkMode;

        _hubConnection = new HubConnectionBuilder()
            .WithUrl(NavManager.ToAbsoluteUri("/updatesHub"))
            .Build();

        _hubConnection.On("UpdatesAvailable", async () => { await InvokeAsync(StateHasChanged); });

        await _hubConnection.StartAsync();
    }

    private async Task SetIsDarkModeCookie()
    {
        await Js.InvokeVoidAsync("blazorSetCookie", "IsDarkMode", _isDarkMode, 7, false);
    }

    private async Task OnChangeTheme()
    {
        await SetIsDarkModeCookie();
    }

    private async Task GoToReleasePage()
    {
        if (UpdatesCheckerState.ReleaseInfo != null)
            await Js.InvokeVoidAsync("open", UpdatesCheckerState.ReleaseInfo.HtmlUrl, "_blank");
    }

}