BCards/src/BCards.Web/Services/ModerationAuthService.cs

using BCards.Web.Configuration;
using Microsoft.Extensions.Options;
using System.Security.Claims;

namespace BCards.Web.Services
{
    public class ModerationAuthService : IModerationAuthService
    {
        private readonly ModerationSettings _settings;

        public ModerationAuthService(IOptions<ModerationSettings> settings)
        {
            _settings = settings.Value;
        }

        public bool IsUserModerator(ClaimsPrincipal user)
        {
            if (!user.Identity?.IsAuthenticated == true)
                return false;

            var email = user.FindFirst(ClaimTypes.Email)?.Value;
            return IsEmailModerator(email);
        }

        public bool IsEmailModerator(string? email)
        {
            if (string.IsNullOrWhiteSpace(email))
                return false;

            return _settings.ModeratorEmails
                .Any(moderatorEmail => moderatorEmail.Equals(email, StringComparison.OrdinalIgnoreCase));
        }

        public List<string> GetModeratorEmails()
        {
            return _settings.ModeratorEmails.ToList();
        }
    }
}