using System;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace bsmd.database
{
    /// <summary>
    /// Basisklasse aller Nachrichtentypen, zentrale Klasse für die NSW App
    /// </summary>
    public class Message : IDatabaseEntity
    {
        private Guid messageHeaderId;
        private MessageCore messageCore;
        private ReportingParty reportingParty;

        #region Enumerations

        public enum NotificationClass
        { 
            VISIT, TRANSIT, NOA_NOD, ATA, ATD, SEC, POBA, POBD, NAME, TIEFA, TIEFD, 
            BKRA, BKRD, STAT, LADG, INFO, SERV, PRE72H, MDH, WAS, CREW, PAS, BPOL, TOWA, TOWD, HAZA, HAZD 
        } 

        public enum MessageStatus
        { ACCEPTED, REJECTED }

        #endregion

        #region Properties

        /// <summary>
        /// Primärschlüssel
        /// </summary>
        public Guid MessageHeaderId { get { return this.messageHeaderId; } }
    
        /// <summary>
        /// Dieser Wert wird vom NSW / HIS vergeben
        /// </summary>
        public string ClientRequestId { set; get; }

        /// <summary>
        /// Referenz zur eigentlichen Schiffankunft
        /// </summary>
        public MessageCore MessageCore { get { return this.messageCore; } }

        public Guid? MessageId { get; set; }

        public DateTime? SentAt { get; set; }

        public DateTime? ReceivedAt { get; set; }

        public DateTime? RequestedAt { get; set; }

        public bool Reset { get; set; }

        public bool Cancel { get; set; }

        public MessageStatus? Status { get; set; }

        /// <summary>
        /// Nachrichtentyp der abgeleiteten Meldeklassen
        /// </summary>
        public NotificationClass MessageNotificationClass { get; set; }

        /// <summary>
        /// Der Meldende
        /// </summary>
        public ReportingParty ReportingParty { get { return this.reportingParty; } }

        #endregion

        #region public virtual methods


        #endregion

        #region IDatabaseEntity implementation

        public bool IsNew
        {
            get { throw new NotImplementedException(); }
        }

        public void Save(System.Data.IDbConnection connection)
        {
            SqlConnection sqlCon = connection as SqlConnection;
            if (sqlCon == null) return;
            if (this.IsNew)
            {
                string query = "INSERT INTO MessageHeader (ClientRequestId, MessageCoreId, MessageId, SentAt, ReceivedAt, RequestedAt, NotificationClass, Reset, Cancel, Status, ReportingPartyId) " +
                    "VALUES (@CLIENTREQUESTID, @MESSAGECOREID, @MESSAGEID, @SENTAT, @RECEIVEDAT, @REQUESTEDAT, @NOTIFICATIONCLASS, @RESET, @CANCEL, @STATUS, @REPORTINGPARTYID)";
                SqlCommand cmd = new SqlCommand(query, sqlCon);
                if (this.ClientRequestId != null)
                    cmd.Parameters.AddWithValue("@CLIENTREQUESTID", this.ClientRequestId);
                else
                    cmd.Parameters.AddWithValue("@CLIENTREQUESTID", DBNull.Value);
                cmd.Parameters.AddWithValue("@MESSAGECOREID", this.MessageCore.Id);
                if (this.MessageId.HasValue)
                    cmd.Parameters.AddWithValue("@MESSAGEID", this.MessageId.Value);
                else
                    cmd.Parameters.AddWithValue("@MESSAGEID", DBNull.Value);
                if (this.SentAt.HasValue)
                    cmd.Parameters.AddWithValue("@SENTAT", this.SentAt.Value);
                else
                    cmd.Parameters.AddWithValue("@SENTAT", DBNull.Value);
                if (this.ReceivedAt.HasValue)
                    cmd.Parameters.AddWithValue("@RECEIVEDAT", this.ReceivedAt.Value);
                else
                    cmd.Parameters.AddWithValue("@RECEIVEDAT", DBNull.Value);
                if (this.RequestedAt.HasValue)
                    cmd.Parameters.AddWithValue("@REQUESTEDAT", this.RequestedAt.Value);
                else
                    cmd.Parameters.AddWithValue("@REQUESTEDAT", DBNull.Value);
                cmd.Parameters.AddWithValue("@NOTIFICATIONCLASS", (int) this.MessageNotificationClass);
                cmd.Parameters.AddWithValue("@RESET", this.Reset);
                cmd.Parameters.AddWithValue("@CANCEL", this.Cancel);
                if (this.Status.HasValue)
                    cmd.Parameters.AddWithValue("@STATUS", (int)this.Status.Value);
                else
                    cmd.Parameters.AddWithValue("@STATUS", DBNull.Value);
                cmd.Parameters.AddWithValue("@REPORTINGPARTYID", this.ReportingParty.Id);

            }
        }

        public void Delete(System.Data.IDbConnection connection)
        {
            throw new NotImplementedException();
        }

        #endregion

    }
}