using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Reflection.Metadata.Ecma335;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Liner.Drawing;
using Liner.Entities;

namespace Liner
{
    /// <summary>
    /// Форма создания объекта
    /// </summary>
    public partial class FormLinerConfig : Form
    {
        /// <summary>
        /// Переменная-выбранная машина
        /// </summary>
        DrawingLiner? _liner = null;
        /// <summary>
        /// Событие
        /// </summary>
        private event Action<DrawingLiner>? EventAddLiner;
        /// <summary>
        /// Конструктор
        /// </summary>
        public FormLinerConfig()
        {
            InitializeComponent();
            panelBlack.MouseDown += PanelColor_MouseDown;
            panelPurple.MouseDown += PanelColor_MouseDown;
            panelGray.MouseDown += PanelColor_MouseDown;
            panelGreen.MouseDown += PanelColor_MouseDown;
            panelRed.MouseDown += PanelColor_MouseDown;
            panelWhite.MouseDown += PanelColor_MouseDown;
            panelYellow.MouseDown += PanelColor_MouseDown;
            panelBlue.MouseDown += PanelColor_MouseDown;
            buttonCancel.Click += (s, a) => Close();
        }
        /// <summary>
        /// Отрисовать лайнер
        /// </summary>
        private void DrawLiner()
        {
            Bitmap bmp = new(pictureBoxObject.Width, pictureBoxObject.Height);
            Graphics gr = Graphics.FromImage(bmp);
            _liner?.SetPosition(15, 15);
            _liner?.DrawTransport(gr);
            pictureBoxObject.Image = bmp;
        }
        /// <summary>
        /// Добавление события
        /// </summary>
        /// <param name="ev">Привязанный метод</param>
        public void AddEvent(Action<DrawingLiner> ev)
        {
            if (EventAddLiner == null)
            {
                EventAddLiner = ev;
            }
            else
            {
                EventAddLiner += ev;
            }
        }
        /// <summary>
        /// Передаем информацию при нажатии на Label
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void LabelObject_MouseDown(object sender, MouseEventArgs e)
        {
            (sender as Label)?.DoDragDrop((sender as Label)?.Name, DragDropEffects.Move | DragDropEffects.Copy);
        }
        /// <summary>
        /// Проверка получаемой информации (ее типа на соответствие требуемому)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PanelObject_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data?.GetDataPresent(DataFormats.Text) ?? false)
            {
                e.Effect = DragDropEffects.Copy;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }
        /// <summary>
        /// Передаем информацию при нажатии на Panel с цветом
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PanelColor_MouseDown(object sender, MouseEventArgs e)
        {
            (sender as Panel)?.DoDragDrop((sender as Panel)?.BackColor, DragDropEffects.Move | DragDropEffects.Copy);
        }
        /// <summary>
        /// Действия при приеме перетаскиваемой информации
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void PanelObject_DragDrop(object sender, DragEventArgs e)
        {
            switch (e.Data?.GetData(DataFormats.Text).ToString())
            {
                case "labelSimpleObject":
                    _liner = new DrawingLiner((int)numericUpDownSpeed.Value,
                    (int)numericUpDownWeight.Value, Color.White, pictureBoxObject.Width,
                    pictureBoxObject.Height);
                    break;
                case "labelModifiedObject":
                    _liner = new DrawingBigLiner((int)numericUpDownSpeed.Value,
                    (int)numericUpDownWeight.Value, Color.White, Color.Black, checkBoxPool.Checked,
                    checkBoxDeck.Checked, pictureBoxObject.Width, pictureBoxObject.Height);
                    break;
            }
            
            DrawLiner();
        }
        private void LabelColor_DragEnter(object sender, DragEventArgs e)
        {
            if (e.Data?.GetDataPresent(typeof(Color)) ?? false)
            {
                e.Effect = DragDropEffects.Copy;
            }
            else
            {
                e.Effect = DragDropEffects.None;
            }
        }
        private void LabelColor_DragDrop(object sender, DragEventArgs e)
        {
            if (_liner == null)
            {
                return;
            }
            switch (((Label)sender).Name)
            {
                case "labelMainColor":
                    _liner.EntityLiner.BottomColor = (Color)e.Data.GetData(typeof(Color));
                    break;
                case "labelAddColor":
                    if (!(_liner is DrawingBigLiner))
                        return;
                    (_liner as DrawingBigLiner).SetAddColor((Color)e.Data.GetData(typeof(Color)));
                    break;
            }
            DrawLiner();
        }
        /// <summary>
        /// Добавление лайнера
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ButtonOk_Click(object sender, EventArgs e)
        {
            EventAddLiner?.Invoke(_liner);
            Close();
        }
        
    }
}