using Microsoft.AspNetCore.Mvc;
using PolyclinicContracts.BindingModels;
using PolyclinicContracts.BusinessLogicsContracts;
using PolyclinicContracts.SearchModels;
using PolyclinicContracts.ViewModels;
using PolyclinicDataModels.Models;
using PolyclinicWebAppImplementer.Models;

namespace PolyclinicWebAppImplementer.Controllers
{
    public class CoursesController : Controller
    {
        private readonly IDiagnoseLogic _diagnoseLogic;
        private readonly ICourseLogic _courseLogic;

        public CoursesController(IDiagnoseLogic diagnoseLogic, ICourseLogic courseLogic)
        {
            _diagnoseLogic = diagnoseLogic;
            _courseLogic = courseLogic;
        }

        [HttpGet]
        public IActionResult Index()
        {
            var currentUser = LoginManager.LogginedUser;
            if (currentUser == null)
            {
                return RedirectToAction("Login", "User");
            }
            List<CourseViewModel> courses = _courseLogic.ReadList();
            ViewData["Title"] = "Список курсов";
            return View("CoursesList", courses);
        }
        [HttpGet]
        [HttpPost]
        public IActionResult Add(CourseFormModel model, int[] selectedDiagnoses)
        {
            var currentUser = LoginManager.LogginedUser;
            if (currentUser == null)
            {
                return RedirectToAction("Login", "User");
            }
            if (HttpContext.Request.Method == "GET")
            {
                ViewData["Title"] = "Новый курс";
                model = new()
                {
                    Diagnoses = _diagnoseLogic.ReadList().Select(x => (x, false)).ToList()
                };
                return View("CourseForm", model);
            }
            else
            {
                var allDiagnoses = _diagnoseLogic.ReadList();
                CourseBindingModel course = new CourseBindingModel
                {
                    Comment = model.CourseViewModel.Comment,
                    DaysCount = model.CourseViewModel.DaysCount,
                    PillsPerDay = model.CourseViewModel.PillsPerDay,
                    CourseDiagnoses = selectedDiagnoses
                        .ToDictionary(
                            x => x,
                            x => allDiagnoses.Where(y => y.Id == x) as IDiagnoseModel
                        )
                };
                _courseLogic.Create(course);
                return RedirectToAction("Index");
            }
        }
        [HttpGet]
        [HttpPost]
        public IActionResult Edit(int id, CourseFormModel model, int[] selectedDiagnoses)
        {
            var currentUser = LoginManager.LogginedUser;
            if (currentUser == null)
            {
                return RedirectToAction("Login", "User");
            }
            if (HttpContext.Request.Method == "GET")
            {
                var obj = _courseLogic.ReadElement(new CourseSearchModel { Id = id });
                model = new()
                {
                    CourseViewModel = obj,
                    Diagnoses = _diagnoseLogic.ReadList().Select(x => (x, obj.CourseDiagnoses.ContainsKey(x.Id))).ToList()
                };
                ViewData["Title"] = "Редактировать курс";
                return View("CourseForm", model);
            }
            else
            {
                var allDiagnoses = _diagnoseLogic.ReadList();
                CourseBindingModel course = new CourseBindingModel
                {
                    Id = id,
                    Comment = model.CourseViewModel.Comment,
                    DaysCount = model.CourseViewModel.DaysCount,
                    PillsPerDay = model.CourseViewModel.PillsPerDay,
                    CourseDiagnoses = selectedDiagnoses
                        .ToDictionary(
                            x => x,
                            x => allDiagnoses.Where(y => y.Id == x) as IDiagnoseModel
                        )
                };
                _courseLogic.Update(course);
                return RedirectToAction("Index");
            }
        }
        [HttpPost]
        public IActionResult Delete(int id)
        {
            var currentUser = LoginManager.LogginedUser;
            if (currentUser == null)
            {
                return RedirectToAction("Login", "User");
            }
            var obj = _courseLogic.ReadElement(new CourseSearchModel { Id = id });
            if (obj != null)
            {
                _courseLogic.Delete(new CourseBindingModel { Id = obj.Id });
            }
            return RedirectToAction("Index");
        }
    }
}