LANCommander/LANCommander.UI/Components/LocalTime/LocalTimeInitializer.razor

@using LANCommander.UI.Extensions
@using LANCommander.UI.Providers
@using Microsoft.JSInterop
@inject TimeProvider TimeProvider
@inject ScriptProvider ScriptProvider
@inject IJSRuntime JS
@namespace LANCommander.UI.Components

@code {
    IJSObjectReference? _timeProvider;

    protected override async Task OnAfterRenderAsync(bool firstRender)
    {
        if (firstRender && TimeProvider is LocalTimeProvider localTimeProvider && !localTimeProvider.IsLocalTimeZoneSet)
        {
            try
            {
                _timeProvider ??= await ScriptProvider.ImportModuleAsync("TimeProvider");
                
                var timeZone = await _timeProvider.InvokeAsync<string>("GetLocalTimeZone");

                localTimeProvider.SetLocalTimeZone(timeZone);
            }
            catch
            {
                var timeZone = await JS.InvokeAsync<string>("eval", "Intl.DateTimeFormat().resolvedOptions().timeZone");
                
                localTimeProvider.SetLocalTimeZone(timeZone);
            }
        }
    }
}