sort-anki.rb

#!/usr/bin/env ruby

require 'sqlite3'

db = SQLite3::Database.new(ARGV[0])
SEP = "\u001f"

# First field in deck is frame number from the v6 edition (well
# actually the id, but the id and frame number seem to match)
#
# Which you can verify by looking at the flds of the deck
#  "flds":
#  [ {"name": "id", "rtl": false, "sticky": false, "media": [], "ord": 0, "font": "DejaVu Sans", "size": 14}
#  , {"name": "frameNoV4", "rtl": false, "sticky": false, "media": [], "ord": 1, "font": "MS Shell Dlg 2", "size": 14}
#  , {"name": "frameNoV6", "rtl": false, "sticky": false, "media": [], "ord": 2, "font": "MS Shell Dlg 2", "size": 14}
#  , {"name": "keyword", "rtl": false, "sticky": false, "media": [], "ord": 3, "font": "MS Shell Dlg 2", "size": 14}
#  , {"name": "kanji", "rtl": false, "sticky": false, "media": [], "ord": 4, "font": "DejaVu Sans", "size": 26}
#  , {"name": "strokeDiagram", "rtl": false, "sticky": false, "media": [], "ord": 5, "font": "Courier New", "size": 14}

# Fields are stored seperated by a special character
notes_to_order = db.execute('select id,flds from notes').each_with_object(Hash.new) do |(id, flds), h|
  h[id] = flds.split(SEP).first
end

# Card appearance order seems to be controlled by due, so set the due
# to the frame number and we're done.
arr = db.execute('select id,nid from cards')
arr.each do |card_id, note_id|
  db.execute('update cards set due = ? where id = ?', notes_to_order[note_id], card_id)
end