using Microsoft.Office.Interop.Word;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using static System.Net.Mime.MediaTypeNames;
using System.Windows.Media.Animation;

namespace JRCookbookBusiness
{
    internal static class clsWord
    {
        private static Microsoft.Office.Interop.Word.Application mobjWord;
        private static bool mblnWordRunning = false;

        internal const int WORD_CHAPTER_NAME_FONT_SIZE = 18;
        internal const int WORD_RECIPE_NAME_FONT_SIZE = 18;
        internal const int WORD_RECIPE_SECTION_HEADING_FONT_SIZE = 14;
        internal const int WORD_NORMAL_FONT_SIZE = 10;
        internal const int WORD_NUTRITION_FONT_SIZE = 8;

        internal static Microsoft.Office.Interop.Word.Application WordApplication { get { return mobjWord; } }

        internal static void AddHalfSpaceLineAtEndOfDocument()
        {
            mobjWord.Selection.EndKey(Microsoft.Office.Interop.Word.WdUnits.wdStory);
            mobjWord.Selection.TypeParagraph();
            mobjWord.Selection.MoveUp(Microsoft.Office.Interop.Word.WdUnits.wdLine, 1);
            mobjWord.Selection.ParagraphFormat.LineSpacingRule = WdLineSpacing.wdLineSpaceSingle;
            mobjWord.Selection.ParagraphFormat.LineSpacing = 4F;
            mobjWord.Selection.ParagraphFormat.SpaceAfter = 0F;
            mobjWord.Selection.EndKey(Microsoft.Office.Interop.Word.WdUnits.wdStory);
        }

        internal static void Insert_HeaderText(String headerText)
        {
            if (mobjWord.ActiveWindow.View.SplitSpecial != WdSpecialPane.wdPaneNone)
            {
                mobjWord.ActiveWindow.Panes[2].Close();
            }

            if (mobjWord.ActiveWindow.ActivePane.View.Type == WdViewType.wdNormalView || mobjWord.ActiveWindow.ActivePane.View.Type == WdViewType.wdOutlineView)
            {
                mobjWord.ActiveWindow.ActivePane.View.Type = WdViewType.wdPrintView;
            }

            mobjWord.Selection.Sections[1].Headers[WdHeaderFooterIndex.wdHeaderFooterPrimary].LinkToPrevious = false;

            mobjWord.ActiveWindow.ActivePane.View.SeekView = WdSeekView.wdSeekCurrentPageHeader;
            mobjWord.Selection.WholeStory();
            mobjWord.Selection.Delete(Microsoft.Office.Interop.Word.WdUnits.wdCharacter, 1);
            
            mobjWord.Selection.ParagraphFormat.Alignment = WdParagraphAlignment.wdAlignParagraphCenter;

            mobjWord.Selection.TypeText(headerText);

            mobjWord.ActiveWindow.ActivePane.View.SeekView = WdSeekView.wdSeekMainDocument;

        }
        
        internal static void Insert_PageNumberFooter(ref bool isFirstPageOfContent)
        {
            if (mobjWord.ActiveWindow.View.SplitSpecial != WdSpecialPane.wdPaneNone)
            {
                mobjWord.ActiveWindow.Panes[2].Close();
            }

            if (mobjWord.ActiveWindow.ActivePane.View.Type == WdViewType.wdNormalView || mobjWord.ActiveWindow.ActivePane.View.Type == WdViewType.wdOutlineView)
            {
                mobjWord.ActiveWindow.ActivePane.View.Type = WdViewType.wdPrintView;
            }

            mobjWord.ActiveWindow.ActivePane.View.SeekView = WdSeekView.wdSeekCurrentPageFooter;

            mobjWord.Selection.WholeStory();
            mobjWord.Selection.Delete(Microsoft.Office.Interop.Word.WdUnits.wdCharacter, 1);

            if (isFirstPageOfContent)
            {
                mobjWord.Selection.HeaderFooter.PageNumbers.RestartNumberingAtSection = true;
                mobjWord.Selection.HeaderFooter.PageNumbers.StartingNumber = 1;

                isFirstPageOfContent = false;
            }
            else
            {
                mobjWord.Selection.HeaderFooter.PageNumbers.RestartNumberingAtSection = false;
            }

            mobjWord.Selection.ParagraphFormat.Alignment = WdParagraphAlignment.wdAlignParagraphCenter;

            mobjWord.Selection.TypeText("Page ");
            mobjWord.Selection.Fields.Add(mobjWord.Selection.Range, Microsoft.Office.Interop.Word.WdFieldType.wdFieldEmpty, "PAGE \\* Arabic ", 1);

            mobjWord.ActiveWindow.ActivePane.View.SeekView = WdSeekView.wdSeekMainDocument;

        }


        internal static void ResetWord()
        {
            if (mblnWordRunning)
            {
                ShutDownWord();
            }

            mobjWord = new Microsoft.Office.Interop.Word.Application();
            mobjWord.Visible = false;
            //mobjWord.Activate();
            //mobjWord.WindowState = Microsoft.Office.Interop.Word.WdWindowState.wdWindowStateMinimize;

            mblnWordRunning= true;
        }

        internal static void ShutDownWord()
        {
            if (mblnWordRunning)
            {
                mobjWord.Quit();
                mobjWord = null;
                mblnWordRunning = false;
            }
        }

    }
}