using BeautySaloonContracts.BindingModels;
using BeautySaloonContracts.BusinessLogicsContracts;
using BeautySaloonContracts.SearchModels;
using BeautySaloonDataModels;

namespace BeautySaloonView
{
    public partial class FormCreateOrder : Form
    {
        private readonly IOrderLogic _logicO;
        private readonly IEmployeeLogic _logicE;
        private int? _idClient;
        private int? _id;
        private Dictionary<int, (TimeOnly, IServiceModel, int)> _orderServices;
        public int IdClient { set { _idClient = value; } }
        public int Id { set { _id = value; } }
        public FormCreateOrder(IOrderLogic logic, IEmployeeLogic logicE)
        {
            InitializeComponent();
            _logicO = logic;
            _logicE = logicE;
            _orderServices = new();
        }
        private void FormCreateOrder_Load(object sender, EventArgs e)
        {
            try
            {
                // продавцы
                var list = _logicE.ReadList(new EmployeeSearchModel
                {
                    PositionId = 1
                });
                if (list != null)
                {
                    comboBoxEmployee.DisplayMember = "FIO";
                    comboBoxEmployee.ValueMember = "Id";
                    comboBoxEmployee.DataSource = list;
                    comboBoxEmployee.SelectedItem = null;
                }
                // загружаем заказ для изменения
                if (_id.HasValue)
                {
                    var view = _logicO.ReadElement(new OrderSearchModel
                    {
                        Id = _id
                    });
                    if (view != null)
                    {
                        textBox.Text = view.Sum.ToString();
                        dateTimePicker.Text = view.Date.ToString();
                        comboBoxEmployee.SelectedValue = view.EmployeeId;
                        _orderServices = view.OrderServices ?? new();
                        LoadData();
                    }

                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка загрузки", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        private void LoadData()
        {
            // заполняем datagridview 
            try
            {
                if (_orderServices != null)
                {
                    dataGridView.Rows.Clear();
                    foreach (var os in _orderServices)
                    {
                        var empl = _logicE.ReadElement(new EmployeeSearchModel
                        {
                            Id = os.Value.Item3
                        });
                        if (empl == null)
                        {
                            throw new ArgumentNullException("Не найден указанный сотрудник");
                        }
                        dataGridView.Rows.Add(new object[]
                        {
                            os.Key,
                            os.Value.Item2.Name,
                            os.Value.Item1,
                            empl.FIO,
                        });
                    }
                    textBox.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(FormOrderServices));
            if (service is FormOrderServices form)
            {
                if (form.ShowDialog() == DialogResult.OK)
                {
                    if (form.ServiceModel == null)
                    {
                        return;
                    }
                    if (_orderServices.ContainsKey(form.IdService))
                    {
                        _orderServices[form.IdService] = (form.Date,
                            form.ServiceModel, form.IdEmployee);
                    }
                    else
                    {
                        _orderServices.Add(form.IdService,
                            (form.Date, form.ServiceModel, form.IdEmployee));
                    }
                    LoadData();
                }
            }
        }
        private void ButtonUpd_Click(object sender, EventArgs e)
        {
            if (dataGridView.SelectedRows.Count == 1)
            {
                var service = Program.ServiceProvider?.GetService(typeof(FormOrderServices));
                if (service is FormOrderServices form)
                {
                    int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells[0].Value);
                    form.IdService = id;
                    form.Date = _orderServices[id].Item1;
                    form.IdEmployee = _orderServices[id].Item3;
                    if (form.ShowDialog() == DialogResult.OK)
                    {
                        if (form.ServiceModel == null)
                        {
                            return;
                        }
                        _orderServices[form.IdService] = (form.Date,
                            form.ServiceModel, form.IdEmployee);
                        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
                    {
                        _orderServices?.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();
        }
        private void ButtonSave_Click(object sender, EventArgs e)
        {
            if (comboBoxEmployee.SelectedValue == null)
            {
                MessageBox.Show("Выберите продавца", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            if (_orderServices == null || _orderServices.Count == 0)
            {
                MessageBox.Show("Заполните услуги", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }
            try
            {
                var model = new OrderBindingModel
                {
                    Id = _id ?? 0,
                    Date = DateOnly.FromDateTime(dateTimePicker.Value),
                    Sum = Convert.ToDecimal(textBox.Text),
                    ClientId = _idClient.Value,
                    EmployeeId = Convert.ToInt32(comboBoxEmployee.SelectedValue),
                    OrderServices = _orderServices
                };
                var operationResult = _id.HasValue ? _logicO.Update(model) : _logicO.CreateOrder(model);
                if (!operationResult)
                {
                    throw new Exception("Ошибка при сохранении.");
                }
                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 decimal CalcPrice()
        {
            decimal price = 0;
            foreach (var elem in _orderServices)
            {
                price += elem.Value.Item2?.Price ?? 0;
            }
            return Math.Round(price, 2);
        }
    }
}