using System;
using System.Collections.Generic;
using System.Linq;

namespace iTero.Orders.Domain.Entities
{
    public class Order
    {
        public long Id { get; }

        public DateTime DateCreated { get; }
        public Patient Patient { get; }
        public Partner Partner { get; }
        public Rx Rx { get; }
        public IReadOnlyList<OrderDetail> OrderDetails => _orderDetails;
        private List<OrderDetail> _orderDetails { get; }
        public Contact Doctor { get; }

        public Partner ShipToPartner
        {
            get => _shipToPartner;
            private set
            {
                _isShipToPartnerSet = true;
                _shipToPartner = value;
            }
        }

        private bool _isShipToPartnerSet;
        private Partner _shipToPartner;

        public Order(long id, DateTime dateCreated,
            Patient patient, Partner partner, Rx rx, Contact doctor, List<OrderDetail> orderDetails)
        {
            Id = id;

            DateCreated = dateCreated;
            Patient = patient;
            Partner = partner;
            Rx = rx;
            Doctor = doctor;
            _orderDetails = orderDetails;
        }

        public Order SetShipToPartner(Partner partner)
        {
            ShipToPartner = partner;
            return this;
        }

        public Order AddIfNeededIdeOrderDetail(bool isDirectToLab)
        {
            var iRecordOrderDetail = _orderDetails.SingleOrDefault(od => od.CaseType == CaseType.iRecord);
            var ideOrderDetail = _orderDetails.SingleOrDefault(od =>
                od.GetType() == typeof(DigitalProductOrderDetail) &&
                ((DigitalProductOrderDetail) od).ITeroDigitalProductType == iTeroDigitalProductType.iDE_Order);

            if (!_isShipToPartnerSet)
            {
                throw new Exception("At first set shipToPartner"); //todo need some typed exception
            }

            if (ideOrderDetail != default)
            {
                throw new Exception("Ide order detail already exists "); //todo need some typed exception
            }

            if (iRecordOrderDetail != default && ShipToPartner != default || isDirectToLab)
            {
                _orderDetails.Add(
                    new DigitalProductOrderDetail(default, iTeroDigitalProductType.iDE_Order,
                        DateTime.UtcNow, 1,new List<WorkOrder>()));
            }
            return this;
        }
    }

    public class RegisteredOrder : Order
    {
        public RegisteredOrder
        (long id, DateTime dateCreated, Patient patient,
            Partner partner, Rx rx, Contact doctor, List<OrderDetail> orderDetails)
            : base(id, dateCreated, patient, partner, rx, doctor, orderDetails)
        {
        }
    }
}