using AircraftPlantContracts.BindingModels;
using AircraftPlantContracts.BusinessLogicsContracts;
using AircraftPlantContracts.SearchModels;
using AircraftPlantDataModels.Models;
using Microsoft.Extensions.Logging;
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 AircraftPlantView
{
    /// <summary>
    /// Форма для изделий
    /// </summary>
    public partial class FormPlane : Form
    {
        /// <summary>
        /// Логгер
        /// </summary>
        private readonly ILogger _logger;

        /// <summary>
        /// Бизнес-логика для изделий
        /// </summary>
        private readonly IPlaneLogic _logic;

        /// <summary>
        /// Идентификатор
        /// </summary>
        private int? _id;
        public int Id { set { _id = value; } }

        /// <summary>
        /// Список компонентов изделия
        /// </summary>
        private Dictionary<int, (IComponentModel, int)> _planeComponents;

        /// <summary>
        /// Конструктор
        /// </summary>
        /// <param name="logger"></param>
        /// <param name="logic"></param>
        public FormPlane(ILogger<FormPlane> logger, IPlaneLogic logic)
        {
            InitializeComponent();
            _logger = logger;
            _logic = logic;
            _planeComponents = new Dictionary<int, (IComponentModel, int)>();
        }

        /// <summary>
        /// Загрузка списка компонентов изделия
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void FormPlane_Load(object sender, EventArgs e)
        {
            if (_id.HasValue)
            {
                _logger.LogInformation("Загрузка изделия");
                try
                {
                    var view = _logic.ReadElement(new PlaneSearchModel { Id = _id.Value });
                    if (view != null)
                    {
                        textBoxName.Text = view.PlaneName;
                        textBoxPrice.Text = view.Price.ToString();
                        _planeComponents = view.PlaneComponents ?? new Dictionary<int, (IComponentModel, int)>();
                        LoadData();
                    }
                }
                catch (Exception ex)
                {
                    _logger.LogError(ex, "Ошибка загрузки изделия");
                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

        /// <summary>
        /// Кнопка "Добавить"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonAdd_Click(object sender, EventArgs e)
        {
            var service = Program.ServiceProvider?.GetService(typeof(FormPlaneComponent));
            if (service is FormPlaneComponent form)
            {
                if (form.ShowDialog() == DialogResult.OK)
                {
                    if (form.ComponentModel == null)
                    {
                        return;
                    }
                    _logger.LogInformation("Добавление нового компонента:{ ComponentName} - { Count}", form.ComponentModel.ComponentName, form.Count);
                    if (_planeComponents.ContainsKey(form.Id))
                    {
                        _planeComponents[form.Id] = (form.ComponentModel, form.Count);
                    }
                    else
                    {
                        _planeComponents.Add(form.Id, (form.ComponentModel, form.Count));
                    }
                    LoadData();
                }
            }
        }

        /// <summary>
        /// Кнопка "Изменить"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonUpdate_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                var service = Program.ServiceProvider?.GetService(typeof(FormPlaneComponent));
                if (service is FormPlaneComponent form)
                {
                    int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value);
                    form.Id = id;
                    form.Count = _planeComponents[id].Item2;
                    if (form.ShowDialog() == DialogResult.OK)
                    {
                        if (form.ComponentModel == null)
                        {
                            return;
                        }
                        _logger.LogInformation("Изменение компонента:{ ComponentName} - { Count}", form.ComponentModel.ComponentName, form.Count);
                        _planeComponents[form.Id] = (form.ComponentModel, form.Count);
                        LoadData();
                    }
                }
            }
        }

        /// <summary>
        /// Кнопка "Удалить"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonDelete_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
                {
                    try
                    {
                        _logger.LogInformation("Удаление компонента:{ ComponentName} - { Count}", dataGridView.SelectedRows[0].Cells[1].Value, dataGridView.SelectedRows[0].Cells[2].Value);
                        _planeComponents?.Remove(Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value));
                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                    LoadData();
                }
            }
        }

        /// <summary>
        /// Кнопка "Обновить"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonRefresh_Click(object sender, EventArgs e)
        {
            LoadData();
        }

        /// <summary>
        /// Кнопка "Сохранить"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonSave_Click(object sender, EventArgs e)
        {
            if (string.IsNullOrEmpty(textBoxName.Text))
            {
                MessageBox.Show("Заполните название", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if (string.IsNullOrEmpty(textBoxPrice.Text))
            {
                MessageBox.Show("Заполните стоимость", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if (_planeComponents == null || _planeComponents.Count == 0)
            {
                MessageBox.Show("Заполните компоненты", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            _logger.LogInformation("Сохранение изделия");
            try
            {
                var model = new PlaneBindingModel
                {
                    Id = _id ?? 0,
                    PlaneName = textBoxName.Text,
                    Price = Convert.ToDouble(textBoxPrice.Text),
                    PlaneComponents = _planeComponents
                };
                var operationResult = _id.HasValue ? _logic.Update(model) : _logic.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)
            {
                _logger.LogError(ex, "Ошибка сохранения изделия");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        /// <summary>
        /// Кнопка "Отмена"
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonCancel_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.Cancel;
            Close();
        }

        /// <summary>
        /// Метод загрузки компонентов изделия
        /// </summary>
        private void LoadData()
        {
            _logger.LogInformation("Загрузка компонентов изделия");
            try
            {
                if (_planeComponents != null)
                {
                    dataGridView.Rows.Clear();
                    foreach (var pc in _planeComponents)
                    {
                        dataGridView.Rows.Add(new object[]
                        {
                            pc.Key,
                            pc.Value.Item1.ComponentName,
                            pc.Value.Item2
                        }
                        );
                    }
                    textBoxPrice.Text = CalcPrice().ToString();
                }
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "Ошибка загрузки компонентов изделия");
                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        /// <summary>
        /// Метод для подсчета стоимости изделия
        /// </summary>
        /// <returns></returns>
        private double CalcPrice()
        {
            double price = 0;
            foreach (var elem in _planeComponents)
            {
                price += ((elem.Value.Item1?.Cost ?? 0) * elem.Value.Item2);
            }
            return Math.Round(price * 1.1, 2);
        }
    }
}