using DocumentFormat.OpenXml.Office2010.Excel;
using HospitalContracts.BindingModels;
using HospitalContracts.BusinessLogicsContracts;
using HospitalContracts.SearchModels;
using HospitalContracts.ViewModels;
using HospitalDataModels.Models;
using Microsoft.AspNetCore.Mvc;
using System.Numerics;

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

		/// <summary>
		/// Бизнес-логика для сущности "Пациент"
		/// </summary>
		private readonly IPatientLogic _patientLogic;

		/// <summary>
		/// Бизнес-логика для сущности "Рецепт"
		/// </summary>
		private readonly IRecipeLogic _recipeLogic;

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

		/// <summary>
		/// Конструктор
		/// </summary>
		/// <param name="logger"></param>
		/// <param name="patientLogic"></param>
		/// <param name="recipeLogic"></param>
		/// <param name="procedureLogic"></param>
		public PatientController(ILogger<PatientController> logger, IPatientLogic patientLogic, IRecipeLogic recipeLogic, IProcedureLogic procedureLogic)
		{
			_logger = logger;
			_patientLogic = patientLogic;
			_recipeLogic = recipeLogic;
			_procedureLogic = procedureLogic;
		}

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

			return View(_patientLogic.ReadList(new PatientSearchModel
			{
				DoctorId = APIClient.Doctor.Id,
			}));
		}

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

			ViewBag.Procedures = _procedureLogic.ReadList(null);

			return View();
		}

		/// <summary>
		/// Создать пациента
		/// </summary>
		/// <param name="fullname"></param>
		/// <param name="birthdate"></param>
		/// <param name="phone"></param>
		/// <param name="procedures"></param>
		/// <returns></returns>
		[HttpPost]
		public void CreatePatient(string fullname, DateTime birthdate, string phone, List<int> procedures)
		{
			if (APIClient.Doctor == null)
			{
				throw new Exception("Необходимо авторизоваться!");
			}

			if (string.IsNullOrEmpty(fullname) || birthdate == DateTime.MinValue || string.IsNullOrEmpty(phone) || procedures == null)
			{
				throw new Exception("Введены не все данные!");
			}

			Dictionary<int, IProcedureModel> patientProcedures = new Dictionary<int, IProcedureModel>();
			foreach (var procedureId in procedures)
			{
				patientProcedures.Add(procedureId, _procedureLogic.ReadElement(new ProcedureSearchModel { Id = procedureId })!);
			}

			_patientLogic.Create(new PatientBindingModel
			{
				FullName = fullname,
				BirthDate = birthdate,
				Phone = phone,
				DoctorId = APIClient.Doctor.Id,
				PatientProcedures = patientProcedures
			});

			Response.Redirect("/Patient/Patients");
		}

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

			ViewBag.Procedures = _procedureLogic.ReadList(null);

			return View(_patientLogic.ReadElement(new PatientSearchModel
			{
				Id = id
			}));
		}

		/// <summary>
		/// Редактировать пациента
		/// </summary>
		/// <param name="fullname"></param>
		/// <param name="birthdate"></param>
		/// <param name="phone"></param>
		/// <param name="procedures"></param>
		/// <returns></returns>
		[HttpPost]
		public void UpdatePatient(int id, string fullname, DateTime birthdate, string phone, List<int> procedures)
		{
			if (APIClient.Doctor == null)
			{
				throw new Exception("Необходимо авторизоваться!");
			}

			if (string.IsNullOrEmpty(fullname) || birthdate == DateTime.MinValue || string.IsNullOrEmpty(phone) || procedures == null)
			{
				throw new Exception("Введены не все данные!");
			}

			Dictionary<int, IProcedureModel> patientProcedures = new Dictionary<int, IProcedureModel>();
			foreach (var procedureId in procedures)
			{
				patientProcedures.Add(procedureId, _procedureLogic.ReadElement(new ProcedureSearchModel { Id = procedureId })!);
			}

			var patient = _patientLogic.ReadElement(new PatientSearchModel { Id = id });
			_patientLogic.Update(new PatientBindingModel
			{
				Id = id,
				FullName = fullname,
				BirthDate = birthdate,
				Phone = phone,
				DoctorId = APIClient.Doctor.Id,
				PatientRecipes = patient!.PatientRecipes,
				PatientProcedures = patientProcedures
			});

			Response.Redirect("/Patient/Patients");
		}

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

			_patientLogic.Delete(new PatientBindingModel
			{
				Id = id
			});

			Response.Redirect("/Patient/Patients");
		}

		/// <summary>
		/// Выписать рецепт пациенту
		/// </summary>
		/// <returns></returns>
		/// <exception cref="Exception"></exception>
		[HttpGet]
		public IActionResult CreatePatientRecipe()
		{
			if (APIClient.Doctor == null)
			{
				throw new Exception("Необходимо авторизоваться!");
			}

			ViewBag.Patients = _patientLogic.ReadList(new PatientSearchModel
			{
				DoctorId = APIClient.Doctor.Id
			});
			ViewBag.Recipes = _recipeLogic.ReadList(new RecipeSearchModel
			{
				DoctorId = APIClient.Doctor.Id
			});

			return View();
		}

		/// <summary>
		/// Выписать рецепт пациенту
		/// </summary>
		/// <param name="patientId"></param>
		/// <param name="recipes"></param>
		/// <exception cref="Exception"></exception>
		[HttpPost]
		public void CreatePatientRecipe(int patientId, List<int> recipes)
		{
			if (APIClient.Doctor == null)
			{
				throw new Exception("Необходимо авторизоваться!");
			}

			if (patientId <= 0 || recipes == null)
			{
				throw new Exception("Введены не все данные!");
			}

			Dictionary<int, IRecipeModel> patientRecipes = new Dictionary<int, IRecipeModel>();
			foreach (var recipeId in recipes)
			{
				patientRecipes.Add(recipeId, _recipeLogic.ReadElement(new RecipeSearchModel { Id = recipeId })!);
			}

			var patient = _patientLogic.ReadElement(new PatientSearchModel { Id = patientId });
			_patientLogic.Update(new PatientBindingModel
			{
				Id = patient!.Id,
				FullName = patient!.FullName,
				BirthDate = patient!.BirthDate,
				Phone = patient!.Phone,
				DoctorId = APIClient.Doctor.Id,
				PatientProcedures = patient!.PatientProcedures,
				PatientRecipes = patientRecipes
			});

			Response.Redirect("/Patient/Patients");
		}

		/// <summary>
		/// Получить список рецептов пациента
		/// </summary>
		/// <param name="patientId"></param>
		/// <returns></returns>
		/// <exception cref="Exception"></exception>
		[HttpGet]
		public JsonResult GetPatientRecipes(int patientId)
		{
			if (APIClient.Doctor == null)
			{
				throw new Exception("Необходимо авторизоваться!");
			}

			var allRecipes = _recipeLogic.ReadList(new RecipeSearchModel
			{
				DoctorId = APIClient.Doctor.Id
			});

			var patient = _patientLogic.ReadElement(new PatientSearchModel { Id = patientId });
			var patientRecipeIds = patient?.PatientRecipes?.Select(x => x.Key).ToList() ?? new List<int>();

			var result = new
			{
				allRecipes = allRecipes.Select(r => new { id = r.Id, issueDate = r.IssueDate }),
				patientRecipeIds = patientRecipeIds
			};

			return Json(result);
		}
	}
}