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| require 'spreadsheet'
require 'pry'
require 'active_support/all'
module Reports
class UsersImportFormGenerator
WIDTH_RATIO = 1.freeze
HEIGHT_RATIO = 3.freeze
WIDTH_DEFAULT = 5.freeze
DEFAULT_FORMAT = { size: 12, vertical_align: :top, horizontal_align: :left, family: :roman }.freeze
# sheets params
#
# number_format: '@': string, '#': float, %: percentage
# 如果沒有指定 number_format 預設 cell 都會是 auto, 但在 number 和 excel 行為不太一樣
# number 一開始先給予超過 10 row，後面新增的 row 就會複製前面一個 row 的格式
#
# [{
# name: 'name'
# rows: [['col', 'col'], ['col', 'col']]
# options: {
# # specified_format > cell format > row format > col format > default_format
# default_format: { vertical_align: :top, horizontal_align: :left, size: 12 },
# rows_format: [{ idx: 0, format: { color: :yellow } }],
# columns_format: [{ idx: 0, format: { color: :red } }],
# specified_columns_format: [{ keys: ['Full Name'], format: { number_format: "@" } }],
# cells_format: [{ idx: 2, idy: 1, format: { color: :yellow } }],
# specified_format: [{ key: ['Name'], format: { color: :yellow } }],
# freeze: { top: 2, left: 0 },
# links: [{ idx: 1, idy: 1, url: 'www.google.com', text: 'google_link' }]
# }
# }]
def initialize(sheets = [])
@sheets = sheets
@spreadsheet = Spreadsheet::Workbook.new
@spreadsheet.set_custom_color(21, 255, 199, 205)
@spreadsheet.set_custom_color(34, 198, 240, 206)
end
def generate
@sheets.each do |sheet|
worksheet = @spreadsheet.create_worksheet(name: sheet[:name])
options = sheet[:options]
@default_format = (options && options[:default_format]) || DEFAULT_FORMAT
set_freeze(worksheet, options[:freeze]) if options && options[:freeze]
set_default_format(worksheet)
insert_rows(sheet[:rows], worksheet)
insert_links(worksheet, options[:links]) if options && options[:links]
worksheet[3,0] = Spreadsheet::Link.new 'http://www.softwaremaniacs.net/2013/11/setting-cell-color-using-ruby.html', 'link text'
basic_reformat(worksheet)
custom_reformat(worksheet, sheet[:options])
end
@spreadsheet.write 'out.xlsx'
end
private
def set_freeze(worksheet, freeze)
worksheet.freeze!(freeze[:top], freeze[:left])
end
def set_default_format(worksheet)
worksheet.protect!('123')
worksheet.default_format = Spreadsheet::Format.new(@default_format)
end
def insert_rows(rows, worksheet)
rows.each_with_index do |row, row_idx|
worksheet.insert_row(row_idx, row)
end
end
def insert_links(worksheet, links)
links.each do |link|
worksheet[link[:idy], link[:idx]] = Spreadsheet::Link.new(link[:url], link[:text])
end
end
def basic_reformat(worksheet)
adjust_height(worksheet)
adjust_width(worksheet)
end
# cell format > row format > col format
def custom_reformat(worksheet, options)
custom_reformat_row(worksheet, options[:rows_format]) if options[:rows_format]
custom_reformat_column(worksheet, (options[:columns_format] || []), (options[:specified_columns_format] || [])) if options[:columns_format] || options[:specified_columns_format]
custom_reformat_cell(worksheet, options[:cells_format]) if options[:cells_format]
custom_reformat_specified(worksheet, options[:specified_format]) if options[:specified_format]
end
def custom_reformat_row(worksheet, rows_format)
rows_format.each do |row|
worksheet.row(row[:idx]).default_format =
Spreadsheet::Format.new(**@default_format, **row[:format])
end
end
def custom_reformat_column(worksheet, columns_format, specified_columns_format)
header = worksheet.row(0)
format_columns = specified_columns_format.each_with_object(Hash.new { |h, k| h[k] = {} }) do |column, hash|
map_column = column[:keys].map { |key| header.find_index(key) }
map_column.each do |idx|
hash[idx] = { **hash[idx], **column[:format] }
end
end
columns_format.each do |column|
format_columns[column[:idx]] = { **format_columns[column[:idx]], **column[:format] }
end
format_columns.each do |idx, format|
worksheet.column(idx).default_format = Spreadsheet::Format.new({ **@default_format, **format })
end
end
def custom_reformat_cell(worksheet, cells_format)
formats = cells_format.map { |cell| cell[:format] }.uniq
formats_mapping = formats.each_with_object({}) do |format, hash|
hash[format] = Spreadsheet::Format.new(**@default_format, **format)
end
cells_format.each do |cell|
worksheet.row(cell[:idy]).set_format(cell[:idx], formats_mapping[cell[:format]])
end
end
def custom_reformat_specified(worksheet, specified_format)
worksheet.each_with_index do |row, row_idx|
row.each_with_index do |content, col_idx|
specified_format.each do |specified|
if specified[:key].include? content
worksheet.row(row_idx).update_format(col_idx, specified[:format])
end
end
end
end
end
# basic_reformat
def adjust_height(worksheet)
[*0...worksheet.row_count].each do |row_idx|
row = worksheet.row(row_idx)
max_height = row.map { |cell| (cell.present? && cell.is_a?(String)) ? cell.split("\n").size : 1 }.max
unless row.all? { |cell| cell.blank? }
row.height =
if max_height
max_height > 200 ? 200 : row.height * max_height * HEIGHT_RATIO
else
row.height
end
end
end
end
# basic_reformat
def adjust_width(worksheet)
[*0...worksheet.column_count].each do |col_idx|
column = worksheet.column(col_idx)
max_column = column.map { |cell| (cell.present? && cell.is_a?(String)) ? cell.split("\n").max_by(&:length).length : 1 }.max
column.width =
if max_column < 12
12
elsif max_column > 100
100
else
max_column + WIDTH_DEFAULT
end
end
end
end
end
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