using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using VeterinaryClinicDataModels.Models;
using System.Numerics;
using VeterinaryClinicContracts.BindingModels;
using VeterinaryClinicContracts.ViewModels;

namespace VeterinaryClinicDatabaseImplement.Models
{
    public class Service: IServiceModel
    {
        public int Id { get; set; }

        [Required]
        public string Name { get; set; } = string.Empty;

        [Required]
        public int Cost { get; set; }

        [ForeignKey("MedicationId")]
        public int MedicationId { get; set; }

        public virtual Medication Medication { get; set; } = new();

        public static Service? Create(VeterinaryClinicDatabase context, ServiceBindingModel model)
        {
            if (model == null)
            {
                return null;
            }

            return new Service()
            {
                Id = model.Id,
                Name = model.Name,
                Cost = model.Cost,
                MedicationId = model.MedicationId,
                Medication = context.Medications
                    .First(x => x.Id == model.MedicationId),
            };
        }

        public void Update(ServiceBindingModel model)
        {
            if (model == null)
            {
                return;
            }

            Name = model.Name;
            Cost = model.Cost;
            MedicationId = model.MedicationId;
        }

        public ServiceViewModel GetViewModel => new()
        {
            Id = Id,
            Name = Name,
            Cost = Cost,
            MedicationId = MedicationId,
            MedicationName = Medication.Name
        };
    }
}