//Target:Winform
//Ref:System
//Ref:System.Drawing
//Ref:System.Windows.Forms

using System;
using System.Diagnostics;
using System.Drawing;
using System.Reflection;
using System.Text;
using System.Windows.Forms;

[assembly: AssemblyTitle("Mojibake correcting for filename and file content")]
[assembly: AssemblyProduct("Mojibake correcting")]
[assembly: AssemblyCopyright("Copyright © V 2016")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

namespace MojibakeCorrecting
{
    internal static class ShutUpDesigener
    {
        public static T AddControl<T>(this Control me, T toAdd) where T : Control
        {
            me.Controls.Add(toAdd);
            return toAdd;
        }

        public static T AddItem<T>(this ToolStrip me, T toAdd) where T : ToolStripItem
        {
            me.Items.Add(toAdd);
            return toAdd;
        }
    }

    public class MainForm : Form
    {
        private MainForm()
        {
            InitUi();
        }

        private void InitUi()
        {
            ClientSize = new Size(640, 480);

            Text = Application.ProductName;

            var tcMain = new TabControl { Dock = DockStyle.Fill };
            Controls.Add(tcMain);

            //var tpFileName = new TabPage("File name");
            //tcMain.TabPages.Add(tpFileName);

            //var tpFileContent = new TabPage("File content");
            //tcMain.TabPages.Add(tpFileContent);

            var tpEncodingDetect = new TabPage("Encoding Detect");
            tcMain.TabPages.Add(tpEncodingDetect);
            {
                //instance && conf

                var toolbar = new ToolStrip { Dock = DockStyle.Top, RenderMode = ToolStripRenderMode.System, GripStyle = ToolStripGripStyle.Hidden };

                toolbar.AddItem(new ToolStripLabel("From:"));
                var tbcbF = toolbar.AddItem(new ToolStripComboBox { ComboBox = { DisplayMember = "DisplayName", ValueMember = "CodePage", DropDownStyle = ComboBoxStyle.DropDownList, DataSource = Encoding.GetEncodings(), Width = 200 } }).ComboBox;

                toolbar.AddItem(new ToolStripLabel("To:"));
                var tbcbT = toolbar.AddItem(new ToolStripComboBox { ComboBox = { DisplayMember = "DisplayName", ValueMember = "CodePage", DropDownStyle = ComboBoxStyle.DropDownList, DataSource = Encoding.GetEncodings(), Width = 200 } }).ComboBox;
                var tbtnC = toolbar.AddItem(new ToolStripButton("MConv") { ToolTipText = "Manual convert" });
                var tbckA = toolbar.AddItem(new ToolStripButton("AOChg") { ToolTipText = "Auto convert on changed" });
                var tbtnR = toolbar.AddItem(new ToolStripButton("Reset") { ToolTipText = "Reset controls" });

                var split = new SplitContainer { Dock = DockStyle.Fill, Orientation = Orientation.Horizontal };
                var txtOrig = new TextBox { Multiline = true, Dock = DockStyle.Fill };
                var txtResu = new TextBox { Multiline = true, Dock = DockStyle.Fill, ReadOnly = true };

                //fucking resharper

                Debug.Assert(tbcbF != null, "cb is null");
                Debug.Assert(tbcbT != null, "cb is null");

                //event

                tbckA.Click += delegate
                {
                    tbckA.Checked = !tbckA.Checked;
                    tbtnC.Enabled = !tbckA.Checked;
                };

                var actConv = new Action(() =>
                {
                    var enc = Encoding.GetEncoding((int)tbcbF.SelectedValue);
                    var dec = Encoding.GetEncoding((int)tbcbT.SelectedValue);
                    txtResu.Text = dec.GetString(enc.GetBytes(txtOrig.Text));
                });

                var actChkConv = new Action(() => { if (tbckA.Checked) actConv(); });

                var actReset = new Action(() =>
                {
                    var def = Encoding.Default.CodePage;
                    tbcbF.SelectedValue = def;
                    tbcbT.SelectedValue = def;
                    txtOrig.Clear();
                    txtResu.Clear();
                });

                tbcbF.SelectedIndexChanged += delegate { actChkConv(); };
                tbcbT.SelectedIndexChanged += delegate { actChkConv(); };
                txtOrig.TextChanged += delegate { actChkConv(); };

                tbtnC.Click += delegate { actConv(); };

                tbtnR.Click += delegate { actReset(); };

                //put

                tpEncodingDetect.Controls.Add(split);
                split.Panel1.Controls.Add(txtOrig);
                split.Panel2.Controls.Add(txtResu);

                tpEncodingDetect.Controls.Add(toolbar);

                //init
                Shown += delegate
                {
                    actReset();
                };
            }
        }

        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        private static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new MainForm());
        }
    }
}