graduation_requirements = @graduation_requirements
ec_year = @_current_year
major = ec_year.ec_major_school.ec_major

wb = xlsx_package.workbook
wb.styles do |style|
  title_style = style.add_style(sz: 16, height: 20, b: true)
  ec_year_style = style.add_style(sz: 10, height: 14)
  label_style = style.add_style(sz: 11, b: true, bg_color: '90EE90', alignment: { horizontal: :center })
  content_style = style.add_style(sz: 11, height: 16, border: { style: :thin, color: '000000' })

  wb.add_worksheet(:name => '毕业要求及指标点') do |sheet|
    sheet.add_row '毕业要求及指标点', style: title_style

    sheet.add_row []

    sheet.add_row ['专业代码', major.code], style: ec_year_style
    sheet.add_row ['专业名称', major.name], style: ec_year_style
    sheet.add_row ['学年', "#{ec_year.year}学年"], style: ec_year_style

    sheet.add_row []

    sheet.add_row %w(毕业要求 分解指标项), style: label_style

    index = 7

    graduation_requirements.each do |requirement|
      requirement_content = "#{requirement.position}. #{requirement.content}"
      requirement.ec_graduation_subitems.each do |item|
        item_content = "#{requirement.position}-#{item.position}. #{item.content}"
        sheet.add_row [requirement_content, item_content], style: content_style
      end

      items_size = requirement.ec_graduation_subitems.size
      sheet.merge_cells("A#{index}:A#{index + items_size}")
      sheet.merge_cells("B#{index}:B#{index + items_size}")

      index += items_size
    end

    sheet.column_widths [400, 400]
  end
end