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

namespace brecal.model
{
    public class Ship : DbEntity
    {

        #region Properties

        public string? Name { get; set; }

        public int? IMO { get; set; }

        public string? Callsign { get; set; }

        public uint? Participant_Id { get; set; }

        public Participant? Participant { get; set; }

        public double? Length { get; set; }

        public double? Width { get; set; }

        public bool IsTug { get { return Participant_Id != null; } }

        public string? TugCompany
        {
            get { if (Participant != null) return Participant.Name; else return ""; }
        }

        #endregion

        #region public static methods

        public static async Task<List<Ship>> LoadAll(IDBManager manager)
        {
            List<DbEntity> loadResultList = await manager.Load(SetLoadQuery, LoadElems);
            List<Ship> result = new();
            foreach (Ship s in loadResultList.Cast<Ship>())
                result.Add(s);
            return result;
        }

        public static void SetLoadQuery(IDbCommand cmd, params object?[] list)
        {
            cmd.CommandText = "SELECT id, name, imo, callsign, participant_id, length, width, created, modified FROM ship";
        }

        public static List<DbEntity> LoadElems(IDataReader reader)
        {
            List<DbEntity> result = new List<DbEntity>();
            while (reader.Read())
            {
                Ship s = new();
                s.Id = (uint)reader.GetInt32(0);
                if (!reader.IsDBNull(1)) s.Name = reader.GetString(1);
                if (!reader.IsDBNull(2)) s.IMO = reader.GetInt32(2);
                if (!reader.IsDBNull(3)) s.Callsign = reader.GetString(3);
                if (!reader.IsDBNull(4)) s.Participant_Id = (uint)reader.GetInt32(4);
                if (!reader.IsDBNull(5)) s.Length = reader.GetFloat(5);
                if (!reader.IsDBNull(6)) s.Width = reader.GetFloat(6);
                if (!reader.IsDBNull(7)) s.Created = reader.GetDateTime(7);
                if (!reader.IsDBNull(8)) s.Modified = reader.GetDateTime(8);
                result.Add(s);
            }
            return result;
        }

        #endregion

        #region DbEntity implementation

        public override void SetCreate(IDbCommand cmd)
        {
            cmd.CommandText = "INSERT INTO ship (name, imo, callsign, participant_id, length, width) VALUES ( @NAME, @IMO, @CALLSIGN, @PID, @LENGTH, @WIDTH)";
            this.SetParameters(cmd);
        }
        
        public override void SetDelete(IDbCommand cmd)
        {
            cmd.CommandText = "DELETE FROM ship WHERE id = @ID";

            IDataParameter idParam = cmd.CreateParameter();
            idParam.ParameterName = "ID";
            idParam.Value = this.Id;
            cmd.Parameters.Add(idParam);
        }

        public override void SetUpdate(IDbCommand cmd)
        {
            cmd.CommandText = "UPDATE ship SET name = @NAME, imo = @IMO, callsign = @CALLSIGN, participant_id = @PID, length = @LENGTH, widht = @WIDTH WHERE id = @ID";
            this.SetParameters(cmd);
        }

        #endregion

        #region private methods

        private void SetParameters(IDbCommand cmd)
        {
            IDbDataParameter id = cmd.CreateParameter();
            id.ParameterName = "ID";
            id.Value = this.Id;
            cmd.Parameters.Add(id);

            IDbDataParameter pid = cmd.CreateParameter();
            pid.ParameterName = "PID";
            pid.Value = this.Participant_Id;
            cmd.Parameters.Add(pid);

            IDbDataParameter name = cmd.CreateParameter();
            name.ParameterName = "NAME";
            name.Value = this.Name;
            cmd.Parameters.Add(name);

            IDbDataParameter imoparam = cmd.CreateParameter();
            imoparam.ParameterName = "IMO";
            imoparam.Value = this.IMO;
            cmd.Parameters.Add(imoparam);

            IDataParameter callsign = cmd.CreateParameter();
            callsign.ParameterName = "CALLSIGN";
            callsign.Value = this.Callsign;
            cmd.Parameters.Add(callsign);

            IDataParameter length = cmd.CreateParameter();
            length.ParameterName = "LENGTH";
            length.Value = this.Length;
            cmd.Parameters.Add(length);

            IDataParameter width = cmd.CreateParameter();
            width.ParameterName = "WIDTH";
            width.Value = this.Width;
            cmd.Parameters.Add(width);
        }

        #endregion

    }
}