﻿/* Copyright (C) 2011  Jan Källman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
 *
 * All code and executables are provided "as is" with no warranty either express or implied.
 * The author accepts no liability for any damage or loss of business that this product may cause.
 *
 * Code change notes:
 *
 * Author							Change						Date
 *******************************************************************************
 * Mats Alm   		                Added		                2013-12-03
 *******************************************************************************/

using System;
using System.Collections.Generic;

namespace AppsheetEpplus;

public class DoubleEnumerableArgConverter : CollectionFlattener<double> {
  public virtual IEnumerable<double> ConvertArgs(
      bool ignoreHidden,
      bool ignoreErrors,
      IEnumerable<FunctionArgument> arguments,
      ParsingContext context) {
    return base.FuncArgsToFlatEnumerable(
        arguments,
        (arg, argList) => {
          if (arg.IsExcelRange) {
            foreach (var cell in arg.ValueAsRangeInfo) {
              if (!ignoreErrors && cell.IsExcelError) {
                throw new ExcelErrorValueException(ExcelErrorValue.Parse(cell.Value.ToString()));
              }
              if (!CellStateHelper.ShouldIgnore(ignoreHidden, cell, context)
                  && ConvertUtil.IsNumeric(cell.Value)) {
                argList.Add(cell.ValueDouble);
              }
            }
          } else {
            if (!ignoreErrors && arg.ValueIsExcelError) {
              throw new ExcelErrorValueException(arg.ValueAsExcelErrorValue);
            }
            if (ConvertUtil.IsNumeric(arg.Value)
                && !CellStateHelper.ShouldIgnore(ignoreHidden, arg, context)) {
              argList.Add(ConvertUtil.GetValueDouble(arg.Value));
            }
          }
        });
  }

  public virtual IEnumerable<double> ConvertArgsIncludingOtherTypes(
      IEnumerable<FunctionArgument> arguments) {
    return base.FuncArgsToFlatEnumerable(
        arguments,
        (arg, argList) => {
          //var cellInfo = arg.Value as EpplusExcelDataProvider.CellInfo;
          //var value = cellInfo != null ? cellInfo.Value : arg.Value;
          if (arg.Value is ExcelDataProvider.IRangeInfo info) {
            foreach (var cell in info) {
              argList.Add(cell.ValueDoubleLogical);
            }
          } else {
            if (arg.Value is double || arg.Value is int || arg.Value is bool) {
              argList.Add(Convert.ToDouble(arg.Value));
            } else if (arg.Value is string) {
              argList.Add(0d);
            }
          }
        });
  }
}