using Abp.Extensions;

using System.Security.Claims;

namespace VberAdmin.Identity;

public class ExternalLoginInfoHelper
{
    public static (string name, string surname) GetNameAndSurnameFromClaims(List<Claim> claims)
    {
        string name = null;
        string surname = null;

        var givennameClaim = claims.FirstOrDefault(c => c.Type == ClaimTypes.GivenName);
        if (givennameClaim != null && !givennameClaim.Value.IsNullOrEmpty())
        {
            name = givennameClaim.Value;
        }

        var surnameClaim = claims.FirstOrDefault(c => c.Type == ClaimTypes.Surname);
        if (surnameClaim != null && !surnameClaim.Value.IsNullOrEmpty())
        {
            surname = surnameClaim.Value;
        }

        if (name == null || surname == null)
        {
            var nameClaim = claims.FirstOrDefault(c => c.Type == ClaimTypes.Name);
            if (nameClaim != null)
            {
                var nameSurName = nameClaim.Value;
                if (!nameSurName.IsNullOrEmpty())
                {
                    var lastSpaceIndex = nameSurName.LastIndexOf(' ');
                    if (lastSpaceIndex < 1 || lastSpaceIndex > (nameSurName.Length - 2))
                    {
                        name = surname = nameSurName;
                    }
                    else
                    {
                        name = nameSurName.Substring(0, lastSpaceIndex);
                        surname = nameSurName.Substring(lastSpaceIndex);
                    }
                }
            }
        }

        return (name, surname);
    }
}