using Microsoft.Extensions.Logging;
using RestaurantContracts.BindingModels;
using RestaurantContracts.BusinessLogicsContracts;
using RestaurantContracts.SearchModels;
using RestaurantDatabaseImplement.Models;
using RestaurantDataModels.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 RestaurantView
{
    public partial class FormCreateOrder : Form
    {
        private readonly IProductLogic _logicP;
        private readonly IOrderLogic _logicO;
        private readonly IClientLogic _logicC;
        private int? _id;
        private Dictionary<int, (IProductModel, int)> _orderProducts;
        public int Id { set { _id = value; } }

        public FormCreateOrder(IProductLogic logicP, IOrderLogic logicO, IClientLogic logicC)
        {
            InitializeComponent();
            _logicP = logicP;
            _logicO = logicO;
            _logicC = logicC;
            _orderProducts = new Dictionary<int, (IProductModel, int)>();
        }

        private void FormCreateOrder_Load(object sender, EventArgs e)
        {
            try
            {
                var clients = _logicC.ReadList(null);
                if (clients != null)
                {
                    comboBoxClients.DisplayMember = "FirstName";
                    comboBoxClients.ValueMember = "Id";
                    comboBoxClients.DataSource = clients;
                    comboBoxClients.SelectedItem = null;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private double CalcPrice()
        {
            double price = 0;
            foreach (var elem in _orderProducts)
            {
                price += elem.Value.Item1.Price * elem.Value.Item2;
            }
            return price;
        }


        private void ButtonSave_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(textBoxPrice.Text))
            {
                MessageBox.Show("Заполните цену", "Ошибка", MessageBoxButtons.OK,
               MessageBoxIcon.Error);
                return;
            }
            if (_orderProducts == null || _orderProducts.Count == 0)
            {
                MessageBox.Show("Заполните компоненты", "Ошибка",
               MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            try
            {
                var model = new OrderBindingModel
                {
                    Id = _id ?? 0,
                    Price = Convert.ToDouble(textBoxPrice.Text),
                    ClientId = Convert.ToInt32(comboBoxClients.SelectedValue),
                    Date = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc),
                OrderProducts = _orderProducts
                };
                var operationResult = _id.HasValue ? _logicO.Update(model) :
               _logicO.Create(model);
                if (!operationResult)
                {
                    throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
                }
                MessageBox.Show("Сохранение прошло успешно", "Сообщение",
               MessageBoxButtons.OK, MessageBoxIcon.Information);
                DialogResult = DialogResult.OK;
                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void ButtonCancel_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.Cancel;
            Close();
        }

        private void LoadData()
        {
            try
            {
                if (_orderProducts != null)
                {
                    dataGridView.Rows.Clear();
                    foreach (var pc in _orderProducts)
                    {
                        dataGridView.Rows.Add(new object[] { pc.Key, pc.Value.Item1.Type, pc.Value.Item2 });
                    }
                    textBoxPrice.Text = CalcPrice().ToString();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
               MessageBoxIcon.Error);
            }
        }

        private void ButtonAdd_Click(object sender, EventArgs e)
        {
            var service = Program.ServiceProvider?.GetService(typeof(FormOrderProduct));
            if (service is FormOrderProduct form)
            {
                if (form.ShowDialog() == DialogResult.OK)
                {
                    if (form.ProductModel == null)
                    {
                        return;
                    }
                    if (_orderProducts.ContainsKey(form.Id))
                    {
                        _orderProducts[form.Id] = (form.ProductModel, form.Count);
                    }
                    else
                    {
                        _orderProducts.Add(form.Id, (form.ProductModel, form.Count));
                    }
                    LoadData();
                }
            }

        }

        private void ButtonUpd_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                var service =
               Program.ServiceProvider?.GetService(typeof(FormOrderProduct));
                if (service is FormOrderProduct form)
                {
                    int id =
                   Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value);
                    form.Id = id;
                    form.Count = _orderProducts[id].Item2;
                    if (form.ShowDialog() == DialogResult.OK)
                    {
                        if (form.ProductModel == null)
                        {
                            return;
                        }
                        _orderProducts[form.Id] = (form.ProductModel, form.Count);
                        LoadData();
                    }
                }
            }

        }

        private void ButtonDel_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                if (MessageBox.Show("Удалить запись?", "Вопрос",
               MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                {
                    try
                    {
                        _orderProducts?.Remove(Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value));
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message, "Ошибка",
                       MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                    LoadData();
                }
            }
        }

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