using AppLauncher.Models;
using AppLauncher.Windows.Forms;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AppLauncher
{
    public partial class MainForm : AForm
    {
        protected int collapsedWidth = 40;
        protected int expandedWidth = 800;
        protected bool isBusy = false;

        public MainForm() : base()
        {
            InitializeComponent();
        }

        protected override void OnShown(EventArgs e)
        {
            base.OnShown(e);

            string jsonfigFilename = Path.ChangeExtension(Application.ExecutablePath, "jsonfig");
            if (File.Exists(jsonfigFilename))
            {
                loadSession(jsonfigFilename);
            }

        }

        public async Task ToggleSize()
        {
            if (this.Width > collapsedWidth)
            {
                flowLayoutPanel1.Visible = false;
                titlePanel1.LabelVisible = false;

                await collapseWindow(collapsedWidth, 6);
            }
            else
            {
                await expandWindow(expandedWidth, 8);

                flowLayoutPanel1.Visible = true;
                titlePanel1.LabelVisible = true;
            }
        }

        /// <summary>
        /// Save As
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void toolStripMenuItem2_Click(object sender, EventArgs e)
        {
            if (isBusy)
            {
                return;
            }

            if (flowLayoutPanel1.Controls.Count <= 0)
            {
                return;
            }

            if (saveFileDialog1.ShowDialog() != DialogResult.OK)
            {
                return;
            }

            isBusy = true;

            List<TileGroupModel> rs = new List<TileGroupModel>();
            for (int i = 0; i < flowLayoutPanel1.Controls.Count; i++)
            {
                if (flowLayoutPanel1.Controls[i].GetType() != typeof(TileLayoutContainer))
                {
                    continue;
                }

                TileLayoutContainer container = flowLayoutPanel1.Controls[i] as TileLayoutContainer;
                rs.Add(container.Model);
            }

            try
            {
                File.WriteAllText(saveFileDialog1.FileName, JsonConvert.SerializeObject(rs));
                MessageBox.Show("Session saved!", "Save session", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message, "Save session");
            }

            isBusy = false;
        }

        private void toolStripMenuItem1_Click(object sender, EventArgs e)
        {
            this.TopMost = !this.TopMost;

            toolStripMenuItem1.Checked = this.TopMost;
        }

        private void exitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        protected async Task collapseWindow(int width, int increment = 6)
        {
            await Task.Run(() =>
            {
                while (this.Width > width)
                {
                    if (this.InvokeRequired)
                    {
                        this.Invoke(new MethodInvoker(() => {
                            this.Width -= increment;
                        }));
                    }
                    else
                    {
                        this.Width -= increment;
                    }

                    Application.DoEvents();
                }
            });
        }

        protected async Task expandWindow(int width, int increment = 8)
        {
            await Task.Run(() =>
            {
                while (this.Width < width)
                {
                    if (this.InvokeRequired)
                    {
                        this.Invoke(new MethodInvoker(() => {
                            this.Width += increment;
                            //this.Invalidate();
                        }));
                    }
                    else
                    {
                        this.Width += increment;
                        //this.Invalidate();
                    }

                    Application.DoEvents();
                }
            });
        }

        protected void loadSession(string filename)
        {
            string sourceCode = File.ReadAllText(filename);
            if (string.IsNullOrWhiteSpace(sourceCode))
            {
                return;
            }

            List<TileGroupModel> rs = JsonConvert.DeserializeObject<List<TileGroupModel>>(sourceCode);
            if (rs == null)
            {
                return;
            }

            int maxWidth = 0;
            flowLayoutPanel1.Controls.Clear();

            foreach (TileGroupModel item in rs)
            {
                TileLayoutContainer panel = new TileLayoutContainer(item);
                maxWidth = Math.Max(maxWidth, panel.Width);

                flowLayoutPanel1.Controls.Add(panel);
            }

            flowLayoutPanel1.Width = maxWidth + SystemInformation.VerticalScrollBarWidth;

            //this.Width = flowLayoutPanel1.Width + (flowLayoutPanel1.Left * 2);
            this.Width = flowLayoutPanel1.Width + flowLayoutPanel1.Left;
        }

    }
}