@page "/FirstTimeSetup/Administrator"
@using LANCommander.Server.Services.Exceptions
@layout FirstTimeSetupLayout
@inject SetupService SetupService
@inject RoleService RoleService
@inject UserService UserService
@inject NavigationManager NavigationManager
@inject IMessageService MessageService
@inject ILogger<Administrator> Logger

<PageTitle>Create Administrator User - First Time Setup</PageTitle>

<Form Model="@Model" Loading="Loading" OnFinish="CreateAdministratorUser" Layout="FormLayout.Vertical">
    <FormItem>
        To get started, you will need to create an administrator user.
    </FormItem>
    <FormItem Label="Username">
        <Input @bind-Value="@context.Username" />
    </FormItem>
    <FormItem Label="Password">
        <InputPassword @bind-Value="@context.Password" />
    </FormItem>
    <FormItem Label="Confirm Password">
        <InputPassword @bind-Value="@context.PasswordConfirm" />
    </FormItem>
    <FormItem>
        <GridRow Justify="RowJustify.End" Style="margin-top: 16px;">
            <GridCol>
                <Button Type="ButtonType.Primary" HtmlType="submit">
                    Create
                </Button>
            </GridCol>
        </GridRow>
    </FormItem>
</Form>

@code {
    [CascadingParameter] FirstTimeSetupLayout Layout { get; set; }

    FirstTimeSetupModel Model = new();

    bool Loading;

    protected override async Task OnInitializedAsync()
    {
        await Layout.ChangeCurrentStep(FirstTimeSetupStep.Administrator);

        var isSetupInitialized = await SetupService.IsSetupInitialized();
        if (isSetupInitialized)
            NavigationManager.NavigateTo("/");
    }

    async Task CreateAdministratorUser()
    {
        Loading = true;
        StateHasChanged();
        await Task.Yield();

        if (Model.Password != Model.PasswordConfirm)
        {
            MessageService.Error("Passwords do not match");
            Loading = false;
            StateHasChanged();
            await Task.Yield();

            return;
        }

        try
        {
            var role = await RoleService.GetAsync(RoleService.AdministratorRoleName);

            try
            {
                if (role == null)
                    role = await RoleService.AddAsync(new Role
                    {
                        Name = RoleService.AdministratorRoleName,
                    });
            }
            catch (AddRoleException ex)
            {
                foreach (var error in ex.IdentityResult.Errors)
                {
                    MessageService.Error(error.Description);
                }

                Loading = false;
                StateHasChanged();
                await Task.Yield();

                return;
            }

            var administrators = await RoleService.GetUsersAsync(RoleService.AdministratorRoleName);

            if (administrators != null && administrators.Any())
                NavigationManager.NavigateTo("/");
            else
            {
                var user = Activator.CreateInstance<User>();

                user.Approved = true;
                user.ApprovedOn = DateTime.UtcNow;
                user.UserName = Model.Username;

                try
                {
                    await UserService.AddAsync(user, bypassPasswordPolicy: true, Model.Password);
                    await UserService.AddToRolesAsync(user.UserName, [RoleService.AdministratorRoleName]);

                    Logger?.LogInformation("Administrator created a new account with password.");

                    await MessageService.SuccessAsync("Setup completed! Redirecting...", 3);

                    Loading = false;

                    NavigationManager.NavigateTo("/");
                }
                catch (UserRegistrationException ex)
                {
                    foreach (var error in ex.IdentityResult.Errors)
                    {
                        MessageService.Error(error.Description);
                    }

                    Loading = false;
                    StateHasChanged();
                    await Task.Yield();
                }
                catch (AddRoleException ex)
                {
                    foreach (var error in ex.IdentityResult.Errors)
                    {
                        MessageService.Error(error.Description);
                    }

                    Loading = false;
                    StateHasChanged();
                    await Task.Yield();
                }
            }
        }
        catch (Exception ex)
        {
            Logger?.LogError(ex, "Could not create administrator");
            MessageService.Error($"Could not create administrator: {ex.Message}", 10);
        }

        Loading = false;
    }
}