SharpRSS/SharpRSS.Blazor/Components/Layout/BaseLayout.razor

@inherits LayoutComponentBase

<MudThemeProvider @ref="@_themeProvider" Theme="@MudTheme" IsDarkMode="@DarkTheme"/>
<MudDialogProvider/>
<MudSnackbarProvider/>

<CascadingValue Value="this">
    <MudLayout>
        <MudMainContent>
            @Body
        </MudMainContent>
    </MudLayout>
</CascadingValue>

@code {
    public readonly MudTheme MudTheme = new MudTheme();
    private MudThemeProvider? _themeProvider;
    private bool _isDarkTheme = true;
    
    public event EventHandler<bool>? OnDarkThemeChanged;

    public bool DarkTheme
    {
        get => _isDarkTheme;
        set
        {
            _isDarkTheme = value;
            ThemeChanged();
        }
    }

    private async void ThemeChanged()
    {
        //TODO: Update user settings
        StateHasChanged();
    }

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender && _themeProvider != null)
        {
            DarkTheme = await _themeProvider.GetSystemPreference();
            _themeProvider.IsDarkModeChanged = EventCallback.Factory.Create<bool>(this, x => OnDarkThemeChanged?.Invoke(this, x));
        }
    }
}