using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using WeifenLuo.WinFormsUI.Docking;
using System.IO;

namespace RomCheater.PluginFramework.Core
{
    public partial class ScratchPad : DockContent
    {
        public ScratchPad()
        {
            InitializeComponent();
            PerformPreInit();
        }


        private void PerformPreInit()
        {
            txtScratchPad.Font = new System.Drawing.Font(txtScratchPad.Font, FontStyle.Italic);
            txtScratchPad.ForeColor = SystemColors.GrayText;
            StringBuilder builder = new StringBuilder();
            txtScratchPad.Clear();

            builder.AppendFormat(System.Environment.NewLine);
            builder.AppendFormat("\tThis is a scratchpad");
            builder.AppendFormat(System.Environment.NewLine);
            builder.AppendFormat("\tYou can type anything in here, and save it for later or load an existing file.");

            txtScratchPad.AppendText(builder.ToString());
        }


        private void PerformSaveOperation()
        {
        }

        private void mnuItemSave_Click(object sender, EventArgs e)
        {
            PerformPostInit();
            DialogResult result = ScracthPadSaver.ShowDialog();
            if (result != DialogResult.OK) { return; }
            using (FileStream fs = new FileStream(ScracthPadSaver.FileName, FileMode.OpenOrCreate, FileAccess.Write, FileShare.Read))
            {
                using (StreamWriter sw = new StreamWriter(fs))
                {
                    sw.Write(txtScratchPad.Text);
                    sw.Flush();
                    sw.Close();
                }
            }
        }

        private void mnuItemOpen_Click(object sender, EventArgs e)
        {
            PerformPostInit();
            DialogResult result = ScracthPadLoader.ShowDialog();
            if (result != DialogResult.OK) { return; }
            txtScratchPad.Clear();

            using (FileStream fs = new FileStream(ScracthPadLoader.FileName, FileMode.Open, FileAccess.Read, FileShare.Read))
            {
                using (StreamReader sr = new StreamReader(fs))
                {
                    txtScratchPad.AppendText(sr.ReadToEnd());
                }
            }
        }



        private bool InitDone = false;

        private void PerformPostInit()
        {
            if (!InitDone)
            {
                txtScratchPad.Clear();
                txtScratchPad.Font = new System.Drawing.Font(txtScratchPad.Font, FontStyle.Regular);
                txtScratchPad.ForeColor = Color.Black;
                InitDone = true;
            }  
        }
        private void txtScratchPad_MouseDown(object sender, MouseEventArgs e)
        {
            PerformPostInit();
        }

        private void txtScratchPad_KeyDown(object sender, KeyEventArgs e)
        {
            PerformPostInit();
        }

        private void mnuItemUndo_Click(object sender, EventArgs e)
        {
            PerformPostInit();
            txtScratchPad.Focus();
            SendKeys.Send("^Z");
        }

        private void mnuItemRedo_Click(object sender, EventArgs e)
        {
            PerformPostInit();
            txtScratchPad.Focus();
            SendKeys.Send("^Y");
        }

        private void mnuItemClear_Click(object sender, EventArgs e)
        {
            txtScratchPad.Clear();
        }

        private void mnuItemCopy_Click(object sender, EventArgs e)
        {
            PerformPostInit();
            string text = txtScratchPad.Text;
            text = text.Replace("\n", System.Environment.NewLine);
            Clipboard.SetText(text);
        }

        private void mnuItemPaste_Click(object sender, EventArgs e)
        {
            PerformPostInit();
            string text = Clipboard.GetText();
            txtScratchPad.Text = text;
        }

        private void ScratchPad_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (txtScratchPad.Text != string.Empty)
            {
                DialogResult result = MessageBox.Show("Would you like to save the ScratchPad data before Closing?", "", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1);
                if (result == DialogResult.Cancel)
                {
                    e.Cancel = true;
                    return;
                }
                if (result == DialogResult.Yes)
                {
                    mnuItemSave.PerformClick();
                }
            }
        }

        private void ScratchPad_Deactivate<T>(object sender, T e) where T: EventArgs
        {
            try
            {
                FormClosingEventArgs args = (e as FormClosingEventArgs);
                ScratchPad_FormClosing(sender, args);
            }
            catch { }
        }
    }
}