// Copyright (c) 2017-today Informatikbüro Daniel Schick
// Base class excel (writer not yet implemented but eventually..)   

using System;
using System.Collections.Generic;
using Microsoft.Office.Interop.Excel;
using System.Runtime.InteropServices;
using log4net;

namespace ENI2.Export
{
    internal class ExcelBase : IDisposable
    {

        #region Fields

        internal enum CountryMode { NONE, DE, DK };

        protected CountryMode _countryMode = CountryMode.NONE;

        protected Workbooks _excelWorkbooks;
        protected Workbook _portcall;
        protected Application _excelApp;
        protected Dictionary<string, Name> _nameDict;
        protected ILog _log;

        #endregion

        #region Properties

        internal CountryMode Mode { get { return _countryMode; } }

        #endregion

        #region Saving

        internal bool Save(string filePath)
        {
            bool result = true;
            if (this._excelApp == null) return false;
            try
            {
                this._excelApp.SaveWorkspace(filePath);
            }
            catch (Exception ex)
            {
                _log.WarnFormat("cannot save workspace: {0}", ex.Message);
                result = false;
            }
            return result;
        }

        internal bool SaveCopy(string filePath)
        {
            bool result = true;
            if (this._excelApp == null) return false;
            try
            {
                this._portcall.Saved = true;
                this._portcall.SaveCopyAs(filePath);
            }
            catch (Exception ex)
            {
                _log.WarnFormat("cannot save copy of workbook: {0}", ex.Message);
                result = false;
            }
            return result;
        }

        #endregion

        #region Dispose

        public void Dispose()
        {
            try
            {
                if (this._portcall != null)
                {
                    this._portcall.Close(0);
                    _log.Debug("Close Worksheet");
                    Marshal.ReleaseComObject(this._portcall);
                }

                if (this._excelWorkbooks != null)
                {
                    this._excelWorkbooks.Close();
                    _log.Debug("Close Workbooks");
                    Marshal.ReleaseComObject(this._excelWorkbooks);
                    // this._excelWorkbooks.Close();
                }
                if (this._excelApp != null)
                {
                    _log.Debug("Quit Excel");
                    this._excelApp.Quit();
                    Marshal.ReleaseComObject(this._excelApp);
                }
            }
            catch(Exception ex)
            {
                _log.ErrorFormat("Exception disposing ExcelReader: {0}", ex.Message);
            }
        }

        #endregion

    }
}