using HotelAbstractions.Logic;
using HotelAbstractions.Models;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace HotelView
{
    public partial class FormReservation : Form
    {
        private readonly IReservationLogic _reservationLogic;
        private readonly IGuestLogic _guestLogic;
        private readonly IRoomLogic _roomLogic;
        public FormReservation(IReservationLogic reservationLogic, IGuestLogic guestLogic, IRoomLogic roomLogic)
        {
            InitializeComponent();
            _reservationLogic = reservationLogic;
            _guestLogic = guestLogic;
            _roomLogic = roomLogic;
        }

        private void FormReservation_Load(object sender, EventArgs e)
        {
            LoadData();
        }

        private void ButtonCreate_Click(object sender, EventArgs e)
        {
            Reservation newReservation = new()
            {
                GuestId = ((Guest?)comboBoxGuest.SelectedItem)?.Id ?? 0,
                RoomId = ((Room?)comboBoxRoom.SelectedItem)?.Id ?? 0,
                ArrivalDate = ToDateOnly(dateTimePickerArrival.Value),
                DepartureDate = ToDateOnly(dateTimePickerDeparture.Value),
                Price = (int)numericUpDownPrice.Value,
            };

            _reservationLogic.Create(newReservation);

            LoadData();
        }

        private void LoadData()
        {
            var reservations = _reservationLogic.GetAll();

            dataGridView.Rows.Clear();

            if (dataGridView.ColumnCount == 0)
            {
                dataGridView.Columns.Add("Id", "ID");
                dataGridView.Columns.Add("GuestId", "GuestId");
                dataGridView.Columns["GuestId"].Visible = false;
                dataGridView.Columns.Add("Guest", "Гость");
                dataGridView.Columns.Add("RoomId", "RoomId");
                dataGridView.Columns["RoomId"].Visible = false;
                dataGridView.Columns.Add("Room", "Комната");
                dataGridView.Columns.Add("ArrivalDate", "Дата заезда");
                dataGridView.Columns.Add("DepartureDate", "Дата выезда");
                dataGridView.Columns.Add("Price", "Цена");

            }

            dataGridView.Columns["Id"].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
            dataGridView.Columns["Guest"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
            dataGridView.Columns["Room"].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
            dataGridView.Columns["ArrivalDate"].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
            dataGridView.Columns["DepartureDate"].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
            dataGridView.Columns["Price"].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;

            comboBoxGuest.DataSource = _guestLogic.GetAll();
            comboBoxGuest.DisplayMember = "Guest";
            comboBoxGuest.ValueMember = "FIO";

            comboBoxRoom.DataSource = _roomLogic.GetAll();
            comboBoxRoom.DisplayMember = "Room";
            comboBoxRoom.ValueMember = "Id";

            foreach (var reservation in reservations)
            {
                dataGridView.Rows.Add(reservation.Id, reservation.GuestId, _guestLogic.Get(reservation.GuestId)?.FIO, reservation.RoomId, reservation.ArrivalDate,
                    reservation.DepartureDate, reservation.Price);
            }
        }

        private void ButtonUpdate_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count > 0)
            {
                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
                int reservationId = Convert.ToInt32(selectedRow.Cells["Id"].Value);

                Reservation updatedReservation = new()
                {
                    Id = reservationId,
                    GuestId = ((Guest?)comboBoxGuest.SelectedItem)?.Id ?? 0,
                    RoomId = ((Room?)comboBoxRoom.SelectedItem)?.Id ?? 0,
                    ArrivalDate = ToDateOnly(dateTimePickerArrival.Value),
                    DepartureDate = ToDateOnly(dateTimePickerDeparture.Value),
                    Price = (int)numericUpDownPrice.Value,
                };

                _reservationLogic.Update(updatedReservation);

                LoadData();
            }
            else
            {
                MessageBox.Show("Пожалуйста, выберите статью, информацию о которой необходимо обновить");
            }
        }

        private void ButtonDelete_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count > 0)
            {
                DataGridViewRow selectedRow = dataGridView.SelectedRows[0];
                int reservationId = Convert.ToInt32(selectedRow.Cells["Id"].Value);

                _reservationLogic.Delete(reservationId);

                LoadData();
            }
            else
            {
                MessageBox.Show("Пожалуйста, выберите статью, информацию о которой необходимо удалить");
            }
        }

        private void DataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex >= 0)
            {
                DataGridViewRow row = dataGridView.Rows[e.RowIndex];
                comboBoxGuest.SelectedValue = row.Cells["Guest"].Value ?? new Guest { FIO = "Неизвестнo" };
                comboBoxRoom.SelectedValue = row.Cells["Room"].Value ?? new Room { Id = 0 };
                dateTimePickerArrival.Text = row.Cells["ArrivalDate"].Value.ToString();
                dateTimePickerDeparture.Text = row.Cells["DepartureDate"].Value.ToString();
                numericUpDownPrice.Text = row.Cells["Price"].Value.ToString();
            }
        }

        public DateOnly ToDateOnly(DateTime dateTime)
        {
            var DateTime = dateTime;
            var Date = new DateOnly(DateTime.Year, DateTime.Month, DateTime.Day);
            return Date;
        }
    }
}