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

namespace brecal.model
{
    public class Berth : DbEntity
    {

        #region Properties

        public string? Name { get; set; }

        public bool? Lock { get; set; }

        public uint? Participant_Id { get; set; }

        public Participant? Participant { get; set; }

        public string? Terminal { get { if (Participant != null) return Participant.Name; else return "n/a";  } }

        #endregion

        #region public static methods

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

        public static void SetLoadQuery(IDbCommand cmd, params object?[] list)
        {
            cmd.CommandText = "SELECT id, name, participant_id, `lock`, created, modified FROM berth";
        }

        public static List<DbEntity> LoadElems(IDataReader reader)
        {
            List<DbEntity> result = new List<DbEntity>();
            while (reader.Read())
            {
                Berth b = new();
                b.Id = (uint)reader.GetInt32(0);
                if (!reader.IsDBNull(1)) b.Name = reader.GetString(1);
                if (!reader.IsDBNull(2)) b.Participant_Id = (uint) reader.GetInt32(2);
                if (!reader.IsDBNull(3)) b.Lock = reader.GetBoolean(3);
                if (!reader.IsDBNull(4)) b.Created = reader.GetDateTime(4);
                if (!reader.IsDBNull(5)) b.Modified = reader.GetDateTime(5);
                result.Add(b);
            }
            return result;
        }

        #endregion

        #region DbEntity implementation

        public override void SetCreate(IDbCommand cmd)
        {
            cmd.CommandText = "INSERT INTO berth (participant_id, name, `lock`) VALUES ( @PID, @NAME, @LOCK)";
            this.SetParameters(cmd);
        }

        public override void SetDelete(IDbCommand cmd)
        {
            cmd.CommandText = "DELETE FROM berth 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 berth SET name = @NAME, participant_id = @PID, `lock` = @LOCK 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 lockparam = cmd.CreateParameter();
            lockparam.ParameterName = "LOCK";
            lockparam.Value = this.Lock;
            cmd.Parameters.Add(lockparam);
        }

        #endregion

    }
}