using ServiceShared.Crypto;
using static ServiceShared.Models.Database.Results;

namespace ServiceShared.Models.HL7
{
    public class MDM
    {
        /// <summary>
        /// TimeStamp of MDM EVN[2]
        /// </summary>
        public DateTime TimeStamp { get; set; }

        /// <summary>
        /// Patient intern id(UNIQUE)
        /// </summary>
        public string PatId { get; set; }

        /// <summary>
        /// Results status of EVN[3]
        /// </summary>
        public ResultsStatus ResultsStatus { get; set; }

        /// <summary>
        /// Patient birthday (yyyyMMdd)
        /// </summary>
        public string Birthday { get; set; }

        /// <summary>
        /// Patient zip
        /// </summary>
        public string Zip { get; set; }

        /// <summary>
        /// UDID (Unique Device ID)
        /// </summary>
        public string UDID { get; set; }

        /// <summary>
        /// PGS Initial already calculated PGS()
        /// </summary>
        public string PGSInitial { get; set; }

        /// <summary>
        /// Sample Id
        /// </summary>
        public string SampleId { get; set; }

        /// <summary>
        /// Base64 encoded file
        /// </summary>
        public string Base64Content { get; set; }

        /// <summary>
        /// AES encrypted value that can be decrypted by service inside (Postleizahl Geburtsdatum SampleId)
        /// </summary>
        public string PGS_HASH(string udid)
        {
            string result = null;

            if(!string.IsNullOrEmpty(this.Zip) && !string.IsNullOrEmpty(this.Birthday) && !string.IsNullOrEmpty(this.SampleId))
            {
                result = AES.Encrypt(this.Zip + '|' + this.Birthday + '|' + this.SampleId, AES.GetKey(udid + AES.PGS_ENCRYPT_PARTIAL_KEY));
            }

            return result;
        }

        /// <summary>
        /// AES encrypted value that can be decrypted by service inside (PatId)
        /// </summary>
        public string PAT_HASH()
        {
            string result = null;

            if (!string.IsNullOrEmpty(this.PatId))
            {
                result = AES.Encrypt(this.PatId);
            }

            return result;
        }

        /// <summary>
        /// PGS SHA512(Postleizahl Geburtsdatum SampleId)
        /// </summary>
        public string PGS()
        {
            string result = null;

            if (!string.IsNullOrEmpty(this.Zip) && !string.IsNullOrEmpty(this.Birthday) && !string.IsNullOrEmpty(this.SampleId))
            {
                result = SHA512.Encrypt(this.Zip + this.Birthday + this.SampleId);
            }

            return result;
        }
    }
}