@page "/register"
@using HopFrame.Security.Services
@using HopFrame.Web.Model
@using HopFrame.Web.Services
@using Microsoft.AspNetCore.Components.Forms
@using Microsoft.AspNetCore.Components.Routing
@using Microsoft.AspNetCore.Components.Web

@implements IDisposable

<PageTitle>Register</PageTitle>

<div class="register-wrapper">
    <EditForm EditContext="_context" OnValidSubmit="OnRegister" FormName="register-form">
        @*<AntiforgeryToken />*@
        <div class="field-wrapper">
            <h2>Register</h2>
            <div class="mb-3">
                <label for="email" class="form-label">Email address</label>
                <InputText type="email" class="form-control" id="email" required @bind-Value="RegisterData.Email"/>
                <ValidationMessage For="() => RegisterData.Email"/>
            </div>
            <div class="mb-3">
                <label for="username" class="form-label">Username</label>
                <InputText type="text" class="form-control" id="username" required @bind-Value="RegisterData.Username"/>
                <ValidationMessage For="() => RegisterData.Username"/>
            </div>
            <div class="mb-3">
                <label for="password" class="form-label">Password</label>
                <InputText type="password" class="form-control" id="password" aria-describedby="passwordHelp" required @bind-Value="RegisterData.Password"/>
                <div id="passwordHelp" class="form-text">The password needs to be at least 8 characters long</div>
                <ValidationMessage For="() => RegisterData.Password"/>
            </div>
            <div class="mb-3">
                <label for="passwordRepeat" class="form-label">Repeat password</label>
                <InputText type="password" class="form-control" id="passwordRepeat" aria-describedby="passwordHelp" required @bind-Value="RegisterData.RepeatedPassword"/>
                <ValidationMessage For="() => RegisterData.RepeatedPassword"/>
            </div>
            <div class="mb-3">
                <span>Already have an account? <NavLink href="login">Login</NavLink></span>
            </div>
            <button type="submit" class="btn btn-primary">Register</button>
        </div>
    </EditForm>
</div>

@inject NavigationManager Navigator
@inject IUserService Users
@inject IAuthService Auth

@code {
    public static string RedirectAfterRegister { get; set; } = "/";

    [SupplyParameterFromForm]
    private RegisterData RegisterData { get; set; }

    private EditContext _context;
    private ValidationMessageStore _messages;

    protected override void OnInitialized() {
        RegisterData ??= new();

        _context = new EditContext(RegisterData);
        _context.OnValidationRequested += ValidateForm;
        _messages = new ValidationMessageStore(_context);
    }

    private async Task OnRegister() {
        var hasConflict = false;
        
        if (await Users.GetUserByEmail(RegisterData.Email) is not null) {
            _messages.Add(() => RegisterData.Email, "Email is already in use");
            hasConflict = true;
        }
        
        if (await Users.GetUserByUsername(RegisterData.Username) is not null) {
            _messages.Add(() => RegisterData.Username, "Username is already in use");
            hasConflict = true;
        }
        
        if (hasConflict) return;

        await Auth.Register(RegisterData);
        Navigator.NavigateTo(RedirectAfterRegister, true);
    }

    private void ValidateForm(object sender, ValidationRequestedEventArgs e) {
        _messages.Clear();

        if (RegisterData.Password != RegisterData.RepeatedPassword) {
            _messages.Add(() => RegisterData.RepeatedPassword,  "Passwords doesn't mach");
        }

        if (RegisterData.Password.Length < 8) {
            _messages.Add(() => RegisterData.Password, "Password needs to be at least 8 characters long");
        }

        if (!RegisterData.Email.Contains("@") || !RegisterData.Email.Contains(".") || RegisterData.Email.EndsWith(".")) {
            _messages.Add(() => RegisterData.Email, "Please enter a valid email address");
        }
    }

    public void Dispose() {
        _context.OnValidationRequested -= ValidateForm;
    }
}