@using LANCommander.Server.Settings
@using Microsoft.Extensions.Options
@inject UserService UserService
@inject IOptions<Settings> Settings
@inject IMessageService MessageService
@inject ILogger<CreateUserDialog> Logger

<Modal Title="Add a User" @bind-Visible="Visible" OnOk="Submit" OnCancel="Cancel" ConfirmLoading="Submitting">
    <Form Model="Model" Layout="@FormLayout.Vertical">
        <FormItem Label="Username">
            <Input @bind-Value="@context.UserName" OnPressEnter="Submit" />
        </FormItem>
        <FormItem Label="Password">
            <InputPassword @bind-Value="@context.Password" OnPressEnter="Submit" />
        </FormItem>
        <FormItem Label="Confirm Password">
            <InputPassword @bind-Value="@context.PasswordConfirm" OnPressEnter="Submit" />
        </FormItem>
        @if (Settings.Value.Server.Authentication.RequireApproval)
        {
            <FormItem Label="Approved">
                <Switch @bind-Value="@context.Approved" />
            </FormItem>
        }
    </Form>
</Modal>

@code {
    [Parameter] public bool Visible { get; set; }
    [Parameter] public EventCallback<bool> VisibleChanged { get; set; }
    [Parameter] public EventCallback OnCreated { get; set; }

    NewUserModel Model { get; set; } = new();
    bool Submitting = false;

    async Task Submit()
    {
        if (string.IsNullOrWhiteSpace(Model.UserName))
        {
            MessageService.Error("A username is required!");
            return;
        }

        if (Model.Password != Model.PasswordConfirm)
        {
            MessageService.Error("Passwords do not match!");
            return;
        }

        if (await UserService.ExistsAsync(u => u.UserName == Model.UserName))
        {
            MessageService.Error("A user with that username already exists!");
            return;
        }

        Submitting = true;

        try
        {
            var approved = !Settings.Value.Server.Authentication.RequireApproval || Model.Approved;

            var user = new User
            {
                UserName = Model.UserName,
                Approved = approved,
                ApprovedOn = approved ? DateTime.UtcNow : null,
            };

            var checkResult = await UserService.CheckRegister(user, Model.Password);

            if (!checkResult.Succeeded)
            {
                foreach (var error in checkResult.Errors)
                    MessageService.Error(error.Description);

                return;
            }

            user = await UserService.AddAsync(user);

            await UserService.ChangePassword(user.UserName, Model.Password);

            MessageService.Success($"Created {user.UserName}!");

            await Close();

            await OnCreated.InvokeAsync();
        }
        catch (Exception ex)
        {
            MessageService.Error("Could not create user!");
            Logger.LogError(ex, "Could not create user!");
        }
        finally
        {
            Submitting = false;
        }
    }

    async Task Cancel()
    {
        await Close();
    }

    async Task Close()
    {
        Model = new();
        Visible = false;
        await VisibleChanged.InvokeAsync(false);
    }

    public class NewUserModel
    {
        public string UserName { get; set; }
        public string Password { get; set; }
        public string PasswordConfirm { get; set; }
        public bool Approved { get; set; } = true;
    }
}