@namespace Oqtane.Themes.Controls
@inherits ThemeControlBase
@using System.Globalization
@inject ILocalizationService LocalizationService
@inject NavigationManager NavigationManager

@if (_supportedCultures != null)
{
    <div class="btn-group" role="group">
        <button id="btnCultures" type="button" class="btn btn-outline-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
            <span class="oi oi-globe"></span>
        </button>
        <div class="dropdown-menu" aria-labelledby="btnCultures">
            @foreach (var culture in _supportedCultures)
            {
                <a class="dropdown-item @(_selectedCulture == culture ? "active" : String.Empty)" href="#" @onclick="@(async e => await SetCultureAsync(culture))">@CultureInfo.GetCultureInfo(culture).DisplayName</a>
            }
        </div>
    </div>
}

@code{
    private string _selectedCulture;
    private string[] _supportedCultures;

    protected override async Task OnParametersSetAsync()
    {
        var interop = new Interop(JSRuntime);
        _selectedCulture = await interop.GetLocalStorage("OqtaneCulture");
        _supportedCultures = await LocalizationService.GetSupportedCultures();
    }

    private async Task SetCultureAsync(string culture)
    {
        if (culture != CultureInfo.CurrentUICulture.Name)
        {
            var interop = new Interop(JSRuntime);
            await interop.SetLocalStorage("OqtaneCulture", culture);

            NavigationManager.NavigateTo(NavigationManager.Uri, forceLoad: true);
        }
    }
}