using Liner.Drawing;
using Liner.Entities;
using Liner.MovingStrategies;
using System.Drawing;

namespace Liner
{
    public partial class MainScreen : Form
    {
        /// <summary>
        /// Поле-объект для прорисовки объекта
        /// </summary>
        private DrawingLiner? _drawingLiner;
        private Bitmap bmp;
        /// <summary>
        /// Стратегия перемещения
        /// </summary>
        private AbstractStrategy? _abstractStrategy;
        /// <summary>
        /// Выбранный лайнер
        /// </summary>
        public DrawingLiner? SelectedLiner { get; private set; }
        /// <summary>
        /// Инициализация формы
        /// </summary>
        public MainScreen()
        {
            InitializeComponent();
            bmp = new(pictureBoxLiner.Width, pictureBoxLiner.Height);
            SelectedLiner = null;
            _abstractStrategy = null;
        }
        /// <summary>
        /// Метод прорисовки лайнера
        /// </summary>
        private void Draw()
        {
            if (_drawingLiner == null)
            {
                return;
            }
            Graphics gr = Graphics.FromImage(bmp);
            gr.Clear(Color.White);
            _drawingLiner.DrawTransport(gr);
            pictureBoxLiner.Image = bmp;
        }
        private void buttonCreateLiner_Click(object sender, EventArgs e)
        {
            Random random = new();
            Color mainColor = Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256));
            Color addColor = Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256));
            ColorDialog dialog = new();
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                addColor = dialog.Color;
            }
            _drawingLiner = new DrawingLiner(random.Next(100, 300),
            random.Next(1000, 3000), mainColor,
            pictureBoxLiner.Width, pictureBoxLiner.Height);
            _drawingLiner.SetPosition(random.Next(10, 100), random.Next(10, 100));
            Draw();
        }

        private void buttonMove_Click(object sender, EventArgs e)
        {
            if (_drawingLiner == null)
            {
                return;
            }
            string name = ((Button)sender)?.Name ?? string.Empty;
            switch (name)
            {
                case "buttonUp":
                    _drawingLiner.MoveTransport(DirectionType.Up);
                    break;
                case "buttonDown":
                    _drawingLiner.MoveTransport(DirectionType.Down);
                    break;
                case "buttonLeft":
                    _drawingLiner.MoveTransport(DirectionType.Left);
                    break;
                case "buttonRight":
                    _drawingLiner.MoveTransport(DirectionType.Right);
                    break;
            }
            Draw();
        }

        private void buttonCreateBigLiner_Click(object sender, EventArgs e)
        {
            Random random = new();
            Color mainColor = Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256));
            Color addColor = Color.FromArgb(random.Next(0, 256), random.Next(0, 256), random.Next(0, 256));
            ColorDialog dialog = new();
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                addColor = dialog.Color;
            }
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                mainColor = dialog.Color;
            }
            _drawingLiner = new DrawingBigLiner(random.Next(100, 300),
            random.Next(1000, 3000), mainColor, addColor,
            Convert.ToBoolean(random.Next(0, 2)),
            Convert.ToBoolean(random.Next(1, 2)),
            pictureBoxLiner.Width, pictureBoxLiner.Height);
            _drawingLiner.SetPosition(random.Next(10, 100), random.Next(10, 100));
            Draw();
        }

        private void buttonStep_Click(object sender, EventArgs e)
        {
            if (_drawingLiner == null)
            {
                return;
            }
            if (comboBoxStrategy.Enabled)
            {
                _abstractStrategy = comboBoxStrategy.SelectedIndex
                switch
                {
                    0 => new MoveToCenter(),
                    1 => new MoveToBorder(),
                    _ => null,
                };
                if (_abstractStrategy == null)
                {
                    return;
                }
                _abstractStrategy.SetData(new DrawingObjectLiner(_drawingLiner), pictureBoxLiner.Width,
                pictureBoxLiner.Height);
                comboBoxStrategy.Enabled = false;
            }
            if (_abstractStrategy == null)
            {
                return;
            }
            _abstractStrategy.MakeStep();
            Draw();
            if (_abstractStrategy.GetStatus() == Status.Finish)
            {
                comboBoxStrategy.Enabled = true;
                _abstractStrategy = null;
            }
        }
        private void buttonSelectLiner_Click(object sender, EventArgs e)
        {
            SelectedLiner = _drawingLiner;
            DialogResult = DialogResult.OK;
        }

    }
}