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

namespace VeterinaryClinicDatabaseImplement.Models
{
    public class Vaccination: IVaccinationModel
    {
        public int Id { get; set; }

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

        [Required]
        public DateTime DateInjection { get; set; } = DateTime.Now;

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

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

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

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

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

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

            return new Vaccination()
            {
                Id = model.Id,
                Name = model.Name,
                DateInjection = model.DateInjection,
                ValidityPeriod = model.ValidityPeriod,
                UserId = model.UserId,
                User = context.Users
                    .First(x => x.Id == model.UserId),
                AnimalId = model.AnimalId,
                Animal = context.Animals
                    .First(x => x.Id == model.AnimalId)
            };
        }

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

            Name = model.Name;
            DateInjection = model.DateInjection;
            ValidityPeriod = model.ValidityPeriod;
            AnimalId = model.AnimalId;
        }

        public VaccinationViewModel GetViewModel => new()
        {
            Id = Id,
            Name = Name,
            DateInjection = DateInjection,
            ValidityPeriod = ValidityPeriod,
            UserId = UserId,
            UserFullName = User.FullName, 
            AnimalId = Animal.Id,
            AnimalBreed = Animal.Breed
        };
    }
}