using HospitalContracts.BindingModels;
using HospitalContracts.BusinessLogicsContracts;
using HospitalContracts.SearchModels;
using HospitalContracts.ViewModels;
using HospitalDataModels.Models;
using Microsoft.AspNetCore.Mvc;

namespace HospitalWebApp.Controllers
{
    /// <summary>
	/// Контроллер для сущности "Процедура"
	/// </summary>
    public class ProcedureController : Controller
    {
        /// <summary>
		/// Логгер
		/// </summary>
		private readonly ILogger<ProcedureController> _logger;

		/// <summary>
		/// Бизнес-логика для сущности "Процедура"
		/// </summary>
		private readonly IProcedureLogic _procedureLogic;

		/// <summary>
		/// Бизнес-логика для сущности "Лекарство"
		/// </summary>
		private readonly IMedicineLogic _medicineLogic;

		/// <summary>
		/// Конструктор
		/// </summary>
		/// <param name="logger"></param>
		/// <param name="procedureLogic"></param>
		/// <param name="medicineLogic"></param>
		public ProcedureController(ILogger<ProcedureController> logger, IProcedureLogic procedureLogic, IMedicineLogic medicineLogic)
        {
            _logger = logger;
            _procedureLogic = procedureLogic;
            _medicineLogic = medicineLogic;
        }

        /// <summary>
		/// Вывести список процедур
		/// </summary>
		/// <returns></returns>
		[HttpGet]
        public IActionResult Procedures()
        {
            if (APIClient.Doctor == null)
            {
                return Redirect("~/Home/Enter");
            }

            return View(_procedureLogic.ReadList(null));
        }

        /// <summary>
		/// Создать процедуру
		/// </summary>
		/// <returns></returns>
		[HttpGet]
        public IActionResult CreateProcedure()
        {
            if (APIClient.Doctor == null)
            {
                return Redirect("~/Home/Enter");
            }

            ViewBag.Medicines = _medicineLogic.ReadList(null);
            return View();
        }

        /// <summary>
        /// Создать процедуру
        /// </summary>
        /// <param name="name"></param>
        /// <param name="description"></param>
        /// <param name="medicines"></param>
        /// <exception cref="Exception"></exception>
        [HttpPost]
        public void CreateProcedure(string name, string? description, List<int> medicines)
        {
            if (APIClient.Doctor == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            if (string.IsNullOrEmpty(name) || medicines == null)
            {
                throw new Exception("Введены не все данные!");
            }

            Dictionary<int, IMedicineModel> procedureMedicines = new Dictionary<int, IMedicineModel>();
            foreach (var medicineId in medicines)
            {
                procedureMedicines.Add(medicineId, _medicineLogic.ReadElement(new MedicineSearchModel { Id = medicineId })!);
            }

            _procedureLogic.Create(new ProcedureBindingModel
            {
                Name = name,
                Description = description,
                ProcedureMedicines = procedureMedicines
            });

            Response.Redirect("/Procedure/Procedures");
        }

        /// <summary>
		/// Редактировать процедуру
		/// </summary>
		/// <returns></returns>
		[HttpGet]
        public IActionResult UpdateProcedure(int id)
        {
            if (APIClient.Doctor == null)
            {
                return Redirect("~/Home/Enter");
            }

            ViewBag.Medicines = _medicineLogic.ReadList(null);

            return View(_procedureLogic.ReadElement(new ProcedureSearchModel
            {
                Id = id
            }));
        }

        /// <summary>
        /// Редактировать процедуру
        /// </summary>
        /// <param name="name"></param>
        /// <param name="description"></param>
        /// <param name="medicines"></param>
        /// <exception cref="Exception"></exception>
        [HttpPost]
        public void UpdateProcedure(int id, string name, string? description, List<int> medicines)
        {
            if (APIClient.Doctor == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            if (string.IsNullOrEmpty(name) || medicines == null)
            {
                throw new Exception("Введены не все данные!");
            }

			Dictionary<int, IMedicineModel> procedureMedicines = new Dictionary<int, IMedicineModel>();
			foreach (var medicineId in medicines)
			{
				procedureMedicines.Add(medicineId, _medicineLogic.ReadElement(new MedicineSearchModel { Id = medicineId })!);
			}

			_procedureLogic.Update(new ProcedureBindingModel
			{
                Id = id,
				Name = name,
				Description = description,
				ProcedureMedicines = procedureMedicines
			});

			Response.Redirect("/Procedure/Procedures");
		}

        /// <summary>
		/// Удалить процедуру
		/// </summary>
		/// <returns></returns>
		[HttpPost]
        public void DeleteProcedure(int id)
        {
            if (APIClient.Doctor == null)
            {
                throw new Exception("Необходимо авторизоваться!");
            }

            _procedureLogic.Delete(new ProcedureBindingModel
            {
                Id = id
            });

			Response.Redirect("/Procedure/Procedures");
		}
    }
}