@using EnvelopeGenerator.Server.Client.Services
@using EnvelopeGenerator.Application.Resources
@using Microsoft.AspNetCore.Components.Routing
@using Microsoft.Extensions.Localization
@using System.Globalization
@inherits LayoutComponentBase
@implements IDisposable

@inject ThemeService ThemeService
@inject IStringLocalizer<Resource> UiLocalizer
@inject NavigationManager Navigation

<HeadContent>
    <link href="@ThemeService.ThemeCssHref" rel="stylesheet" />
</HeadContent>

<div class="page" data-bs-theme="@ThemeService.BootstrapTheme">
    <main>
        <article class="content">
            @Body
        </article>
    </main>
    <footer class="receiver-footer">
        <div class="receiver-footer__left">
            <span>&copy; SignFlow 2023-2024 <a href="https://digitaldata.works" target="_blank" rel="noopener">Digital Data GmbH</a></span>
            <span class="receiver-footer__sep">&#124;</span>
            <a href="@GetPrivacyPolicyPath()" target="_blank" rel="noopener">@L("PrivacyPolicy", "Datenschutz")</a>
        </div>

        <div class="receiver-footer__right">
            <LanguageControls />
            <ThemeControls />
        </div>
    </footer>
</div>

@code {
    [Inject] IHttpClientFactory HttpClientFactory { get; set; } = default!;

    private Action? _themeChangeHandler;

    protected override async Task OnInitializedAsync()
    {
        Navigation.LocationChanged += OnLocationChanged;
        await FontLoader.LoadFonts(HttpClientFactory, ["opensans.ttf"]);
        _themeChangeHandler = () => InvokeAsync(StateHasChanged);
        ThemeService.OnChange += _themeChangeHandler;
        await base.OnInitializedAsync();
    }

    public void Dispose()
    {
        ThemeService.OnChange -= _themeChangeHandler;
        Navigation.LocationChanged -= OnLocationChanged;
    }

    private void OnLocationChanged(object? sender, LocationChangedEventArgs e)
        => _ = InvokeAsync(StateHasChanged);

    private string GetPrivacyPolicyPath()
    {
        var current = CultureInfo.CurrentUICulture.Name;
        var code = current switch
        {
            "de-DE" => "de-DE",
            "en-US" => "en-US",
            "fr-FR" => "fr-FR",
            _ => "de-DE"
        };

        return $"docs/privacy-policy.{code}.html";
    }

    string L(string key, string fallback)
    {
        var value = UiLocalizer[key];
        return value.ResourceNotFound ? fallback : value.Value;
    }
}