using ProjectFamilyBudget.Entities;
using ProjectFamilyBudget.Repositories;
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 ProjectFamilyBudget.Forms
{
    public partial class FormPeopleExpense : Form
    {
        private readonly IPeopleExpense _peopleEpxense;
        public FormPeopleExpense(IPeopleExpense peopleEpxense, IPeople people, IExpense expense)
        {
            InitializeComponent();
            _peopleEpxense = peopleEpxense ??
                throw new ArgumentNullException(nameof(peopleEpxense));
            comboBoxPeople.DataSource = people.ReadPeople();
            comboBoxPeople.DisplayMember = "FullName";
            comboBoxPeople.ValueMember = "Id";

            ColumnExpense.DataSource = expense.ReadExpense();
            ColumnExpense.DisplayMember = "Name";
            ColumnExpense.ValueMember = "Id";
        }

        private void buttonSave_Click(object sender, EventArgs e)
        {
            try
            {
                if ((dataGridView.RowCount < 1)
                ||
                (comboBoxPeople.SelectedIndex < 0))
                {
                    throw new Exception("Имеются незаполненные поля");
                }
                _peopleEpxense.CreatePeopleExpense(PeopleExpense.CreateOperation(0, (int)comboBoxPeople.SelectedValue!, dateTimePicker.Value,
                    CreateListPeopleExpenseFromDataGrid()));
                Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Ошибка при сохранении",
                MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
        private void buttonCansel_Click(object sender, EventArgs e) => Close();
        private List<ExpensePeopleExpense> CreateListPeopleExpenseFromDataGrid()
        {
            var list = new List<ExpensePeopleExpense>();
            foreach (DataGridViewRow row in dataGridView.Rows)
            {
                if (row.Cells["ColumnExpense"].Value == null || row.Cells["ColumnSum"].Value == null)
                {
                    continue;
                }
                list.Add(ExpensePeopleExpense.CreateElement(0, Convert.ToInt32(row.Cells["ColumnExpense"].Value)
                    , Convert.ToInt32(row.Cells["ColumnSum"].Value)));
            }
            return list.GroupBy(x => x.ExpenseId, x => x.Sum, (id, counts) =>
                ExpensePeopleExpense.CreateElement(0, id, counts.Sum())).ToList();
        }
    }
}