using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using LBWordLibrary;

namespace Volian.Controls.Library
{
	public partial class frmImportWordContents : Form
	{
		LBApplicationClass _WordApp;
		bool _initializing = false;
		private StepRTB _MyStepRTB = null;

		public StepRTB MyStepRTB
		{
			get { return _MyStepRTB; }
			set { _MyStepRTB = value; }
		}
		public frmImportWordContents()
		{
			_initializing = true;
			InitializeComponent();
			// C2019-021 Allow the Number field to be edited.
			txbWordFile.Text = Properties.Settings.Default.ImportWordFilePath;
			disableButtons();
			_initializing = false;
			btnOpen.Enabled = (txbWordFile.Text.Length > 0);
		}

		private void disableButtons()
		{
			btnOpen.Enabled = false;
			btnNext.Enabled = false;
			btnPage.Enabled = false;
			btnPrev.Enabled = false;
		}
		private void ofd_FileOk(object sender, CancelEventArgs e)
		{
			_initializing = true;
			txbWordFile.Text = ofd.FileName;
			_initializing = false;
		}

		private void btnBrowse_Click(object sender, EventArgs e)
		{
			// if we have a word doc open, then close it and reset WordApp
			if (_WordApp != null)
			{
				try
				{
					_WordApp.Quit();
				}
				catch
				{
					// will error if user already closed Word
				}
				_WordApp = null;
				disableButtons();
			}
			if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
			{
				btnOpen_Click(sender, e);
			}

		}

		private void btnOpen_Click(object sender, EventArgs e)
		{
			if (!File.Exists(txbWordFile.Text))
			{
				MessageBox.Show(string.Format("{0}", txbWordFile.Text), "File Does Not Exist", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
				disableButtons();
				return;
			}
			_WordApp = new LBApplicationClass();
			_WordApp.Documents.Open(txbWordFile.Text);
			_WordApp.Visible = true;
			btnNext.Enabled = true;
			btnPage.Enabled = true;
			btnPrev.Enabled = true;
			Properties.Settings.Default.ImportWordFilePath = txbWordFile.Text;
			Properties.Settings.Default.Save();
		}
		private void btnPage_Click(object sender, EventArgs e)
		{
			_WordApp.Selection.MoveDown(LBWdUnits.wdScreen, 1, 0);
		}
		private void btnPrev_Click(object sender, EventArgs e)
		{
		// C2019-021 RHM 5/15/2019 Added new methods and properties for Import Word Content
			_WordApp.Selection.MoveUp(LBWdUnits.wdParagraph, 1, 0); // Move to previous paragraph
			_WordApp.Selection.MoveUp(LBWdUnits.wdParagraph, 1, 1); // Select paragraph
			//_WordApp.Selection.MoveEnd(LBWdUnits.wdCharacter, -1); // Move 1 Character Back
			try
			{
				// C2019-021 Use generic function CopyWordText
				CopyWordText();
				if (txbWrdText.Text.TrimEnd("\r\n\f".ToCharArray()) == "")
					btnPrev_Click(sender, e);
				else
					Clipboard.SetText(txbWrdText.Text);
			}
			catch
			{ }
		}
		// C2019-021 RHM 5/15/2019 Added new methods and properties for Import Word Content
		/// <summary>
		/// MoveToNextCell
		/// Find the next Cell including merged cells
		/// Loop through columns then rows
		/// </summary>
		/// <returns>
		/// Yes - if Processed as a cell
		/// No  - Not Processed
		/// </returns>
		private bool MoveToNextCell()
		{
			// Get the row and column for the current selection within the table.
			int rowIndex = _WordApp.Selection.Cells[1].RowIndex;
			int columnIndex = _WordApp.Selection.Cells[1].ColumnIndex;
			// Only do this for tables
			if (_WordApp.Selection.Tables != null && _WordApp.Selection.Tables.Count > 0)
				{
				LBTable tbl = _WordApp.Selection.Tables[1];
				if (tbl.Range.Cells != null && tbl.Range.Cells.Count > 0)
				{
					// Make sure the entire cell is selected
					_WordApp.Selection.SelectCell();
					// Loop through the cells of the table
					for (int i = 1; i < tbl.Range.Cells.Count; i++)
					{
						LBCell myCell = tbl.Range.Cells[i];
						// if this cell has matching indices, then move to the next cell
						if (myCell.RowIndex == rowIndex && myCell.ColumnIndex == columnIndex)
						{
							// Move the Start to the start of the next cell
							_WordApp.Selection.Start = tbl.Range.Cells[i + 1].Range.Start;
							// Select the entire cell
							_WordApp.Selection.SelectCell();
							return true;  // Cell Found and moved
						}
					}
				}
			}
			return false; // Cell not found
		}
		private void btnNext_Click(object sender, EventArgs e)
		{
			// C2019-021 Either move by cells or paragraphs
			if (_WordApp.Selection.Cells != null && _WordApp.Selection.Cells.Count > 0)
			{
				if (!MoveToNextCell())
				{
					_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 2, 0);// Move beyond the table
					_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 1, 1);// Select a Paragraph
				}
			}
			else // not a table
			{
				_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 1, 0); // Move to the next paragraph
				_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 1, 1); // Select a Paragraph
			}
			try
			{
				// C2019-021 Use Generic CopyWordText
				CopyWordText();
				if (_WordApp.Selection.Cells != null && _WordApp.Selection.Cells.Count > 0)
				{
					Clipboard.SetText(txbWrdText.Text);
				}
				else
				{
					// C2019-021 If the word text only contains whitespace skip to next
					if (txbWrdText.Text.TrimEnd("\f\r\n".ToCharArray()) == "")
						btnNext_Click(sender, e);
					else
						Clipboard.SetText(txbWrdText.Text);
				}
			}
			catch
			{ }
		}
		// C2019-021 Generic CopyWordText (Copy Text, Style and Number to fields on form)
		private void CopyWordText()
		{
			txvStyle.Text = _WordApp.Selection.Style.NameLocal;
			txbLevel.Text = _WordApp.Selection.Style.ListLevelNumber.ToString();
			tbxNumber.Text = _WordApp.Selection.Range.ListFormat.ListString;
		// C2019-021 RHM 5/15/2019 Added new methods and properties for Import Word Content
			try
			{
				//Console.WriteLine("Cell Count = {0}", _WordApp.Selection.Cells.Count);
				lblTable.Text = "Table";
				lblTable.FontBold = true;
			}
			catch
			{
				lblTable.Text = "Not Table";
				lblTable.FontBold = false;
			}
			txbWrdText.Text = ShowText(_WordApp.Selection.Text.TrimEnd("\r\a".ToCharArray()));
			_WordApp.Activate();
		}
		// C2019-021 RHM 5/15/2019 Added newe methods and properties for Import Word Content
		private string ShowText(string txt)
		{
			//  This was for debugging
			//StringBuilder sb = new StringBuilder();
			//foreach (char c in txt)
			//	if (((int)c) >= ' ' && ((int)c) < '\x7F')
			//		sb.Append(c);
			//	else
			//		sb.Append(string.Format("\\u{0:X4} ", ((int)c)));
			//return sb.ToString();
			return txt;
		}
		private void txbWordFile_TextChanged(object sender, EventArgs e)
		{
			btnOpen.Enabled = !_initializing;
		}
		private void frmImportWordContents_FormClosing(object sender, FormClosingEventArgs e)
		{
			try
			{
				if (_WordApp != null)
					_WordApp.Quit();
			}
			catch
			{
				// incase user manually closed word
			}
		}
		//C2019-021 Remove old method.
		//private void btnNextIns_Click(object sender, EventArgs e)
		//{
		//	if (MyStepRTB != null)
		//	{
		//		if (MyStepRTB.MyItemInfo.IsSection)
		//		{
		//			MyStepRTB.RtbSendKeys("^{DOWN}"); // <Ctrl><down arrow> - next edit window
		//			MyStepRTB.RtbSendKeys("^+b"); // insert previous
		//		}
		//		else
		//			MyStepRTB.RtbSendKeys("^+i"); // insert next (same type and level)
		//		MyStepRTB.RtbSendKeys("^v");  // clipboard paste
		//		Application.DoEvents();
		//	}
		//	this.Focus(); // set focus back to this form
		//}
		//private void btnNextRpl_Click(object sender, EventArgs e)
		//{
		//	if (MyStepRTB != null)
		//	{
		//		MyStepRTB.RtbSendKeys("^{DOWN}"); // <Ctrl><down arrow> - next edit window
		//		MyStepRTB.RtbSendKeys("^a"); // select all
		//		MyStepRTB.RtbSendKeys("^v");  // clipboard paste
		//		Application.DoEvents();
		//	}
		//	this.Focus(); // set focus back to this form
		//}
		// C2019-021 New function to replace the PROMS text with the word text and move to the next paragraph in word.
		private void btnReplaceNext_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				if (MyStepRTB.Parent is VlnFlexGrid)//Replace text in a Grid (Table cell)
				{
					VlnFlexGrid vg = MyStepRTB.Parent as VlnFlexGrid;
					vg.StartEditing();
					MyStepRTB.Text = txbWrdText.Text;
					vg[vg.Row, vg.Col] = MyStepRTB.Rtf;
					vg.FinishEditing(false);
				}
				else if (MyStepRTB.MyItemInfo.IsSection && tbxNumber.Text != "")
				{
					using (VEPROMS.CSLA.Library.Item ii = MyStepRTB.MyItemInfo.Get())
					{
						ii.MyContent.Text = txbWrdText.Text.Trim("\r\n\f".ToCharArray());
						ii.MyContent.Number = tbxNumber.Text;
						ii.MyContent.Save();
					}
					EditItem ei = MyStepRTB.Parent as EditItem;
					ei.RefreshTab();
				}
				else
				{
					MyStepRTB.Text = txbWrdText.Text.Trim("\r\n".ToCharArray());
					MyStepRTB.Select(MyStepRTB.TextLength, 0);
				}
				btnNext_Click(sender, e);
			}
		}

		// C2019-021 New function to insert the Word text into PROMS and move to the next paragraph in Word
		private void btnInsertNext_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				MyStepRTB.SelectedText = txbWrdText.Text.Trim("\r\n\f".ToCharArray());
				MyStepRTB.Select(MyStepRTB.TextLength, 0);
				btnNext_Click(sender, e);
			}

		}

		// C2019-021 New Function to create a after node in PROMS
		private void btnAfter_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				if (MyStepRTB.Parent is VlnFlexGrid)
				{
					VlnFlexGrid vg = MyStepRTB.Parent as VlnFlexGrid;
					//vg.FinishEditing(false);
					vg.SelectNextCell();
				}
				else
				{
					EditItem ei = MyStepRTB.Parent as EditItem;
					if (ei != null)
					{
						ei.AddSiblingAfter();
					}
				}
			}
		}

		// C2019-021 Add a New Section in PROMS (Default Type = 10000)
		private void btnSect_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				EditItem ei = MyStepRTB.Parent as EditItem;
				if (ei.MyItemInfo.IsProcedure)
				{
					ei.AddChild(VEPROMS.CSLA.Library.E_FromType.Section, 10000);// TODO: Need Type for Procedure Steps
					return;
				}
				while (ei != null && !ei.MyItemInfo.IsSection)
					if (ei.MyParentEditItem != null)
						ei = ei.MyParentEditItem;
					else
						ei = ei.MyPreviousEditItem;
				if (ei != null)
				{
					ei.AddSiblingAfter();
				}
			}
		}
		// C201-021 New Function Add a new High level step
		private void btnHigh_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				EditItem ei = MyStepRTB.Parent as EditItem;
				if (ei.MyItemInfo.IsSection)
				{
					ei.AddChild(VEPROMS.CSLA.Library.E_FromType.Step, 20002);
					return;
				}
				while (ei != null && !ei.MyItemInfo.IsHigh)
					if (ei.MyParentEditItem != null)
						ei = ei.MyParentEditItem;
					else
						ei = ei.MyPreviousEditItem;
				if (ei != null)
				{
					ei.AddSiblingAfter();
				}
			}
		}
		// C2019-021 New Function Add a new sequential substep
		private void btnSEQ_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				EditItem ei = MyStepRTB.Parent as EditItem;
				ei.AddChild(VEPROMS.CSLA.Library.E_FromType.Step, 20001);
			}
		}
		// C2019-021 New Function Add a new parent step after
		private void btnParentAfter_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				EditItem ei = MyStepRTB.Parent as EditItem;
				while (ei.MyPreviousEditItem != null)
					ei = ei.MyPreviousEditItem;
				if (ei != null && ei.MyParentEditItem != null)
				{
					ei.MyParentEditItem.AddSiblingAfter();
				}
			}
		}
		// C2019-021 New Function Split the text in the current proms window into two
		// The text before the selection is kept in the current PROMS window
		// The selected text is deleted
		// the text after the selection is cut to the clipboard
		private void btnSplit_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				MyStepRTB.SelectedText = "";
				MyStepRTB.Select(MyStepRTB.SelectionStart, MyStepRTB.TextLength - MyStepRTB.SelectionStart);
				Clipboard.SetText(MyStepRTB.SelectedText);
				MyStepRTB.SelectedText = "";
			}
		}
		// C2019-021 New Function - Performs a paste in the current window
		private void btnPaste_Click(object sender, EventArgs e)
		{
			if (MyStepRTB != null)
			{
				MyStepRTB.SelectedText = Clipboard.GetText();
			}
		}
		// C2019-021 RHM 5/15/2019 Added new methods and properties for Import Word Content
		private void btnCurrent_Click(object sender, EventArgs e)
		{
			_WordApp.Selection.MoveUp(LBWdUnits.wdParagraph, 1, 0); // Select paragraph
			_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 1, 1); // Select paragraph
			_WordApp.Selection.MoveEnd(LBWdUnits.wdCharacter, -1); // Exclude the last character 
			try
			{
				// C2019-021 Use Generic CopyWordText
				CopyWordText();
				// C2019-021If the word text only contains whitespace skip to next
				//if (txbWrdText.Text.TrimEnd("\f\r\n\a".ToCharArray()) == "")
				//	btnNext_Click(sender, e);
				//else
				Clipboard.SetText(txbWrdText.Text);
			}
			catch
			{ }
		}
		private void btnTest_Click(object sender, EventArgs e)
		{
			if (!MoveToNextCell())
			{
				_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 2, 0);
				_WordApp.Selection.MoveDown(LBWdUnits.wdParagraph, 1, 1);
			}
			_WordApp.Activate();
			//int cols = _WordApp.Selection.Tables[1].Columns.Count;
		}
	}
}