@namespace Oqtane.Themes.Controls
@using System.Net
@inherits ThemeControlBase
@inject IStringLocalizer<UserProfile> Localizer
@inject NavigationManager NavigationManager

<span class="app-profile">
    @if (PageState.User != null)
    {
        <a href="@_profileurl" class="@CssClass">@PageState.User.Username</a>
    }
    else
    {
        @if (ShowRegister && PageState.Site.AllowRegistration)
        {
            <a href="@_registerurl" class="@CssClass">@Localizer["Register"]</a>
        }
    }
</span>

@code {

    [Parameter]
    public bool ShowRegister { get; set; }

    [Parameter]
    public string CssClass { get; set; } = "btn btn-primary";

    [Parameter]
    public string RegisterUrl { get; set; } // optional parameter to specify a custom registration url

    [Parameter]
    public string ProfileUrl { get; set; } // optional parameter to specify a custom user profile url

    private string _registerurl = "";
    private string _profileurl = "";
    private string _returnurl = "";

    protected override void OnParametersSet()
    {        
        if (!PageState.QueryString.ContainsKey("returnurl"))
        {
            // remember current url
            _returnurl = WebUtility.UrlEncode(PageState.Route.PathAndQuery);
        }
        else
        {
            // use existing value
            _returnurl = PageState.QueryString["returnurl"];
        }

        if (!string.IsNullOrEmpty(RegisterUrl))
        {
            _registerurl = RegisterUrl + "?returnurl=" + (RegisterUrl.Contains("://") ? WebUtility.UrlEncode(PageState.Route.RootUrl) + _returnurl : _returnurl);
        }
        else
        {
            _registerurl = NavigateUrl("register", "returnurl=" + _returnurl);
        }

        if (!string.IsNullOrEmpty(ProfileUrl))
        {
            _registerurl = ProfileUrl + "?returnurl=" + (ProfileUrl.Contains("://") ? WebUtility.UrlEncode(PageState.Route.RootUrl) + _returnurl : _returnurl);
        }
        else
        {
            _registerurl = NavigateUrl("profile", "returnurl=" + _returnurl);
        }
    }
}