using DigitalData.Modules.Logging;
using EnvelopeGenerator.Common;

namespace EnvelopeGenerator.Web.Services
{
    public class ApiService
    {
        private LogConfig _logConfig;
        private Logger _logger;

        public ApiService(LoggingService Logging, IConfiguration Config)
        {
            _logConfig = Logging.LogConfig;
            _logger = Logging.LogConfig.GetLogger();

            _logger.Debug("Initializing ApiService");
        }

        public string EnsureValidEnvelopeKey(string envelopeKey)
        {
            _logger.Debug("Parsing EnvelopeKey..");

            if (string.IsNullOrEmpty(envelopeKey))
                throw new ArgumentNullException("EnvelopeKey");

            Tuple<string, string> result = Helpers.DecodeEnvelopeReceiverId(envelopeKey);
            _logger.Debug("EnvelopeUUID: [{0}]", result.Item1);
            _logger.Debug("ReceiverSignature: [{0}]", result.Item2);

            if (string.IsNullOrEmpty(result.Item1))
                throw new ArgumentNullException("EnvelopeUUID");

            if (string.IsNullOrEmpty(result.Item2))
                throw new ArgumentNullException("ReceiverSignature");

            return envelopeKey;
        }

        public string EnsureValidEnvelopeKey(HttpRequest request)
        {           
            var envelopeKey = request.RouteValues["envelopeKey"] as string;
            return EnsureValidEnvelopeKey(envelopeKey);
        }
    }
}