private void AddCategoryHeader(string categoryName, int subcategoriesCount)
        {
            var cells = new List <CellData>();

            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = categoryName
                },
                UserEnteredFormat = SubHeaderFormat(),
            });
            _budget.Categories.FirstOrDefault(x => x.Name.ToLower() == categoryName.ToLower()).RowIndex = _googleSheetService.CurrentRow;
            _googleSheetService.AddRow(cells);

            cells = new List <CellData>();
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = "Name"
                },
                UserEnteredFormat = new CellFormat()
                {
                    Borders           = GoogleSheetService.GetTopBorder(),
                    TextFormat        = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    WrapStrategy      = "WRAP",
                    VerticalAlignment = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = "Planned spending"
                },
                UserEnteredFormat = new CellFormat()
                {
                    Borders             = GoogleSheetService.GetTopBorder(),
                    TextFormat          = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    WrapStrategy        = "WRAP",
                    HorizontalAlignment = "RIGHT",
                    VerticalAlignment   = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = "Actual spending"
                },
                UserEnteredFormat = new CellFormat()
                {
                    Borders             = GoogleSheetService.GetTopBorder(),
                    TextFormat          = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    WrapStrategy        = "WRAP",
                    HorizontalAlignment = "RIGHT",
                    VerticalAlignment   = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = "Difference"
                },
                UserEnteredFormat = new CellFormat()
                {
                    Borders             = GoogleSheetService.GetTopBorder(),
                    TextFormat          = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    WrapStrategy        = "WRAP",
                    HorizontalAlignment = "RIGHT",
                    VerticalAlignment   = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = "Realization"
                },
                UserEnteredFormat = new CellFormat()
                {
                    Borders             = GoogleSheetService.GetTopBorder(),
                    TextFormat          = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    WrapStrategy        = "WRAP",
                    HorizontalAlignment = "CENTER",
                    VerticalAlignment   = "MIDDLE",
                }
            });

            cells.Add(new CellData());
            for (int i = 0; i < DateTime.DaysInMonth(_budget.Month.Year, _budget.Month.Month); i++)
            {
                cells.Add(new CellData()
                {
                    UserEnteredValue = new ExtendedValue()
                    {
                        FormulaValue = $"=SUM({GoogleSheetService.GetCellAddress(6 + i, _googleSheetService.CurrentRow + 2)}:{GoogleSheetService.GetCellAddress(6 + i, _googleSheetService.CurrentRow + 2 + subcategoriesCount - 1)})"
                    },
                    UserEnteredFormat = new CellFormat()
                    {
                        NumberFormat = new NumberFormat()
                        {
                            Type = "CURRENCY"
                        },
                        Borders           = GoogleSheetService.GetTopBorder(),
                        TextFormat        = GoogleSheetService.GetDefaultCellFormatting(),
                        VerticalAlignment = "MIDDLE",
                    }
                });
            }
            _googleSheetService.AddRow(cells);

            cells = new List <CellData>();
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    StringValue = "Sum:"
                },
                UserEnteredFormat = new CellFormat()
                {
                    Borders           = GoogleSheetService.GetBottomBorder(),
                    TextFormat        = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    VerticalAlignment = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    FormulaValue = $"=SUM({GoogleSheetService.GetCellAddress(1, _googleSheetService.CurrentRow + 1)}:{GoogleSheetService.GetCellAddress(1, _googleSheetService.CurrentRow + subcategoriesCount)})"
                },
                UserEnteredFormat = new CellFormat()
                {
                    NumberFormat = new NumberFormat()
                    {
                        Type = "CURRENCY"
                    },
                    Borders           = GoogleSheetService.GetBottomBorder(),
                    TextFormat        = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    VerticalAlignment = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    FormulaValue = $"=SUM({GoogleSheetService.GetCellAddress(2, _googleSheetService.CurrentRow + 1)}:{GoogleSheetService.GetCellAddress(2, _googleSheetService.CurrentRow + subcategoriesCount)})"
                },
                UserEnteredFormat = new CellFormat()
                {
                    NumberFormat = new NumberFormat()
                    {
                        Type = "CURRENCY"
                    },
                    Borders           = GoogleSheetService.GetBottomBorder(),
                    TextFormat        = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    VerticalAlignment = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    FormulaValue = $"={GoogleSheetService.GetCellAddress(2, _googleSheetService.CurrentRow)}-{GoogleSheetService.GetCellAddress(1, _googleSheetService.CurrentRow)}"
                },
                UserEnteredFormat = new CellFormat()
                {
                    NumberFormat = new NumberFormat()
                    {
                        Type = "CURRENCY"
                    },
                    Borders           = GoogleSheetService.GetBottomBorder(),
                    TextFormat        = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    VerticalAlignment = "MIDDLE",
                }
            });
            cells.Add(new CellData()
            {
                UserEnteredValue = new ExtendedValue()
                {
                    FormulaValue = $"=IFERROR({GoogleSheetService.GetCellAddress(2, _googleSheetService.CurrentRow)}/{GoogleSheetService.GetCellAddress(1, _googleSheetService.CurrentRow)}; \"-\")"
                },
                UserEnteredFormat = new CellFormat()
                {
                    NumberFormat = new NumberFormat()
                    {
                        Type    = "PERCENT",
                        Pattern = "0.00%"
                    },
                    Borders             = GoogleSheetService.GetBottomBorder(),
                    TextFormat          = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                    HorizontalAlignment = "CENTER",
                    VerticalAlignment   = "MIDDLE",
                }
            });

            cells.Add(new CellData());
            DateTime columnDate = new DateTime(_budget.Month.Year, _budget.Month.Month, 1);

            for (int i = 0; i < DateTime.DaysInMonth(_budget.Month.Year, _budget.Month.Month); i++)
            {
                cells.Add(new CellData()
                {
                    UserEnteredValue = new ExtendedValue()
                    {
                        StringValue = $"{columnDate.ToString("yyyy-MM-dd")}"
                    },
                    UserEnteredFormat = new CellFormat()
                    {
                        Borders             = GoogleSheetService.GetBottomBorder(),
                        TextFormat          = GoogleSheetService.GetDefaultTableHeaderFormatting(),
                        HorizontalAlignment = "CENTER",
                        VerticalAlignment   = "MIDDLE",
                    }
                });
                columnDate = columnDate.AddDays(1);
            }
            _googleSheetService.AddRow(cells);
        }