bulletboards/ImageBoardServerApp/Pages/Accounts/ClickOn/ClickOnConfirmEmail.razor

@page "/sys/click/confirmmail/{userid}/{oldmail}/{proposedemail}/{token}"
@using System.ComponentModel.DataAnnotations
@using ImageBoardServerApp.Data.Repository
<h3>Confirm your Email</h3>

<span>Confirmed email. Check Account Settings.</span>

@code {
    private string msg { get; set; }

    [Parameter]
    [Required]
    public string userid { get; set; }

    [Parameter]
    [Required]
    public string proposedemail { get; set; }

    [Parameter]
    [Required]
    public string oldmail { get; set; }

    [Parameter]
    [Required]
    public string token { get; set; }

    protected override async Task OnInitializedAsync()
    {
        if (!int.TryParse(userid, out _))
        {
            msg = "malformed userid.";
            return;
        }


        var user = await UsersRepository.getUserByIdAsync(int.Parse(userid));

        if (user.ConfirmedEmail)
            return;

        if (user == null)
        {
            msg = "Could not find user.";
            return;
        }

        if (user.Email != oldmail)
        {
            msg = "This email is not specified to this account.";
            return;
        }

        if (user.ProposedEmail != proposedemail)
        {
            msg = "This is not the specified new mail to this account.";
            return;
        }

        if (user.ConfirmEmailToken != token)
        {
            msg = "This token is not associated with the specified account.";
            return;
        }

        user.ConfirmEmailToken = "-1";
        user.ConfirmedEmail = true;

        await UsersRepository.updateUserAsync(user);

        msg = "The email has been confirmed.";
    }

}