Convert Trello JSON export files to Org-mode format

trello_json_to_org.rb

#!/usr/bin/env ruby

# trello_json_to_org.rb
# convert JSON files exported from Trello to https://orgmode.org/ format
#
# Copyright (C) 2020 Juri Linkov  <juri@linkov.net>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# Usage: ruby trello_json_to_org.rb trello_export.json > trello_export.org
# where trello_export.json is exported from a Trello board,
# and usually contains 8 hexadecimal characters in the file name.

# Post-processing: after converting to org-mode format, you might need to
# manually move TODO items that correspond to the finished state to the end
# of the "#+TODO:" line after the separator "|".

# It's useful first to export JSON to YAML with:
# ruby -rjson -ryaml -e 'puts(JSON.load(ARGF).to_yaml)' trello_export.json > trello_export.yaml
# to inspect the output, if you need to export more data to org-mode format.

require 'json'

def fix_label(label)
  label.gsub(/\s+/, '_')
end

json = JSON.parse(ARGF.read, object_class: OpenStruct)

# Exit if it can't be org format file
exit unless json.prefs.canBeOrg

puts "#+TITLE: #{json.name}"
puts "#+AUTHOR: #{json.dig(:members, 0, :fullName)}"
puts "#+DATE: <#{json.dateLastActivity}>"

print "#+TODO: "
json.labelNames.each_pair do |_color, name|
  print "#{fix_label(name)} " unless name.empty?
end
puts "|" # You can move some DONE labels after this "|"
puts

comments = Hash.new {|h,k| h[k]=[]}
json.actions.each do |action|
  next unless action.type == 'commentCard'
  comments[action.data.card.id] << action
end

json.lists.sort_by(&:pos).each do |list|
  puts "* #{list.name}#{' :ARCHIVE:' if list.closed}"
  puts
  json.cards.sort_by(&:pos).each do |card|
    next unless card.idList == list.id
    print "** "
    card.labels.each do |label|
      print "#{fix_label(label.name)} "
    end
    puts "#{card.name}#{' :ARCHIVE:' if card.closed}"
    puts "   [#{card.dateLastActivity}]"
    puts "   DEADLINE: <#{card.due}>" if card.due
    puts
    card.idChecklists.each do |checklist_id|
      json.checklists.sort_by(&:pos).each do |checklist|
        next unless checklist.id == checklist_id
        states = checklist.checkItems.group_by(&:state).transform_values(&:count)
        puts "*** #{checklist.name} [#{states['complete'] || 0}/#{checklist.checkItems.size}]"
        checklist.checkItems.sort_by(&:pos).each do |item|
          puts " - [#{item.state == 'complete' ? 'X' : ' '}] #{item.name}"
        end
      end
      puts
    end
    puts card.desc
    puts
    comments[card.id].each do |comment|
      puts "*** Comment by #{comment.memberCreator.fullName}"
      puts "    [#{comment.date}]"
      puts
      puts comment.data.text
      puts
    end
  end
end

colormap = {
  green:  '#61bd4f', # '#519839',
  yellow: '#f2d600', # '#d9b51c',
  orange: '#ff9f1a', # '#cd8313',
  red:    '#eb5a46', # '#b04632',
  purple: '#c377e0', # '#89609e',
  blue:   '#0079bf', # '#055a8c',
  sky:    '#00c2e0',
  lime:   '#51e898',
  pink:   '#ff78cb',
  black:  '#344563',
}

puts
puts "* Local Variables :noexport:"
puts "\- Local Variables:"
print "- org-todo-keyword-faces: ("
json.labelNames.each_pair do |color, name|
  print "\n-   (\"#{fix_label(name)}\" . (:background \"#{colormap[color] || color}\" :foreground \"white\"))" unless name.empty?
end
puts ")"
puts "- End:"