@using MoonCore.Helpers
@using Moonlight.Shared.Http.Responses.Auth

@inject HttpApiClient ApiClient
@inject NavigationManager Navigation

<div class="flex h-screen justify-center items-center">
    <div class="sm:max-w-lg">
        <div class="w-full card card-body text-center">
            <LazyLoader EnableDefaultSpacing="false" Load="Load">
                @if (ShowSelection)
                {
                    <h5 class="card-title mb-2.5">Login to Moonlight</h5>
                
                    <p class="mb-4">Choose a login provider to start using the app</p>
                
                    <div class="flex flex-col w-full mt-5 gap-y-2.5">
                        @foreach (var scheme in AuthSchemes)
                        {
                            var config = Configs.GetValueOrDefault(scheme.Identifier);

                            if (config == null) // Ignore all schemes which have no ui configured
                                continue;

                            <button @onclick="() => Start(scheme)" class="btn btn-text w-full" style="background-color: @(config.Color)">
                                <img src="@config.IconUrl"
                                     alt="scheme icon"
                                     class="size-5 object-cover fill-base-content"/>
                                Sign in with @scheme.DisplayName
                            </button>
                        }
                    </div>
                }
                else
                {
                    <div class="flex justify-center">
                        <span class="loading loading-spinner loading-xl"></span>
                    </div>
                }
            </LazyLoader>
        </div>
    </div>
</div>

@code
{
    private AuthSchemeResponse[] AuthSchemes;
    private Dictionary<string, AuthSchemeConfig> Configs = new();
    private bool ShowSelection = false;

    protected override void OnInitialized()
    {
        Configs["LocalAuth"] = new AuthSchemeConfig()
        {
            Color = "#7636e3",
            IconUrl = "/placeholder.jpg"
        };
    }

    private async Task Load(LazyLoader arg)
    {
        AuthSchemes = await ApiClient.GetJson<AuthSchemeResponse[]>(
            "api/auth"
        );

        // If we only have one auth scheme available
        // we want to auto redirect the user without
        // showing the selection screen
        
        if (AuthSchemes.Length == 1)
            await Start(AuthSchemes[0]);
        else
            ShowSelection = true;
    }

    private Task Start(AuthSchemeResponse scheme)
    {
        Navigation.NavigateTo($"/api/auth/{scheme.Identifier}", true);
        return Task.CompletedTask;
    }

    record AuthSchemeConfig
    {
        public string Color { get; set; }
        public string IconUrl { get; set; }
    }
}