@using System.Security.Policy
@using LANCommander.Launcher.Models
@using LANCommander.SDK
@using LANCommander.SDK.Models
@using LANCommander.Launcher.UI.Authenticate.Components
@inject ProfileService ProfileService
@inject NavigationManager NavigationManager
@inject SDK.Client Client
@inject AuthenticationService AuthenticationService
@inject IMessageService MessageService
@inject ILogger<System.Index> Logger

<CascadingValue Value="State">
    <Layout Style="background-image: url('/assets/auth-background.jpg'); background-size: cover;">
        <Content Class="authentication-form">
            <div class="authentication-logo">
                <img src="/assets/logo.svg" width="300" />
            </div>

            <div class="authentication-box">
                @if (State.Stage == AuthenticationStage.SelectServer)
                {
                    <ServerSelector OnSelected="ServerSelected" Connecting="_connecting" />
                }

                @if (State.Stage == AuthenticationStage.Login)
                {
                    <LoginForm ServerAddress="@State.ServerAddress" OnBack="() => State.Stage = AuthenticationStage.SelectServer" OnRegister="() => State.Stage = AuthenticationStage.Register" />
                }

                @if (State.Stage == AuthenticationStage.Register)
                {
                    <RegistrationForm ServerAddress="@State.ServerAddress" OnBack="() => State.Stage = AuthenticationStage.Login" />
                }
            </div>
        </Content>
    </Layout>
</CascadingValue>

@code {
    [CascadingParameter] public Models.ConnectionState ConnectionState { get; set; }

    AuthenticationFormState State { get; set; }

    bool _connecting { get; set; } = false;

    private Models.Settings Settings = SettingService.GetSettings();

    protected override async Task OnInitializedAsync()
    {
        await base.OnInitializedAsync();

        State = new()
        {
            Stage = AuthenticationStage.None,
            ServerAddress = AuthenticationService.GetServerAddress(),
        };

        bool hasServer = await AuthenticationService.IsServerOnlineAsync();
        if (hasServer)
        {
            if (!ConnectionState.IsStartup)
            {
                State.Stage = AuthenticationService.HasStoredCredentials() || Settings.LaunchCount > 0
                    ? AuthenticationStage.Login
                    : AuthenticationStage.Register;
            }
        }
        else
        {
            State.Stage = AuthenticationStage.SelectServer;
        }
    }

    async Task ServerSelected(string serverAddress)
    {
        try
        {
            _connecting = true;

            await Client.ChangeServerAddressAsync(serverAddress);
            State.ServerAddress = Client.GetServerAddress();
            State.Stage = AuthenticationStage.Login;
        }
        catch (Exception ex)
        {
            MessageService.Error(ex.Message);
        }
        finally
        {
            _connecting = false;
        }
    }
}