using Microsoft.Extensions.Logging;
using System;
using System.Threading.Tasks;
using Twilio.Clients;
using Twilio.Rest.Lookups.V1;

namespace Knoks.Framework.Services
{
    public class TwilioPhoneService : IPhoneService
    {
        private ILogger<TwilioPhoneService> _logger;
        public TwilioRestClient _twilioRestClient { get; }

        public TwilioPhoneService(ILogger<TwilioPhoneService> logger, TwilioPhoneSettings settings)
        {
            _logger = logger;
            _twilioRestClient = new TwilioRestClient(settings.AccountSid, settings.AuthToken);
        }

        public async Task<PhoneNumber> Lookup(string number, string countryCode = null)
        {
            try
            {
                var res = await PhoneNumberResource.FetchAsync(new Twilio.Types.PhoneNumber(number), countryCode, client: _twilioRestClient);

                return new PhoneNumber
                {
                    OriginalFormat = number,
                    NationalFormat = res.NationalFormat,
                    E164Format = res.PhoneNumber.ToString(),
                    CountryCode2 = res.CountryCode
                };
            }
            catch (Exception ex)
            {
                _logger.LogError(ex.Message);
                return null;
            }
        }
    }
}