Move files into directories based on dates in filenames

archive.rb

require 'fileutils'
require 'securerandom'
require 'pp'
require 'shellwords'

=begin
Given pictures in subdirectories structured as year/month/date/picture.jpg,
output year-month-date.tar.bz2.gpg and keys.txt.

Where:
* year-month-date.tar.bz2.gpg is an encrypted and compressed archive of the directory.
* keys.txt contains the randomly generated encryption keys for the files (one per file).

Then, store keys.txt securely (LastPass?) and upload the tarballs whereever.
=end

$passphrase_chars = [(?A..?Z), (?a..?z), (?0..?9)].map(&:to_a).flatten + %w[@ # $ % ^ & *]
$passphrase_length = 30
$dry_run = false
$output_dir = "output"
$keys_file = File.join($output_dir, "keys.txt")

FileUtils.mkdir_p($output_dir)

# If you run this multiple times, differentiate between program runs in the
# output
File.open($keys_file, "a+") do |f|
  f.puts("-" * 50)
  f.puts Time.now.to_s
end

def gen_passphrase
  SecureRandom
    .random_bytes($passphrase_length)
    .unpack("C*")
    .map { |i| $passphrase_chars[i % $passphrase_chars.size] }
    .join
end

def sh str
  $stderr.puts "+ #{str}"

  unless $dry_run
    Process.wait Process.spawn(str)
    fail "subshell failed" if $?.exitstatus > 0
  end
end

def esc str
  Shellwords.shellescape(str)
end

Dir.glob("*/*/*").each do |directory|
  next unless File.directory? directory
  output_prefix = directory.gsub("/", "-")
  passphrase = gen_passphrase
  output_tar_file = "#{output_prefix}.tar.bz2"

  File.open($keys_file, "a+") do |f|
    f.puts([output_tar_file, passphrase].join("\t"))
  end

  sh %Q{tar cfj #{esc($output_dir + '/' + output_tar_file)} #{esc(directory)}}
  sh %Q{gpg -c --no-use-agent --batch --passphrase #{esc(passphrase)} #{esc($output_dir + '/' + output_tar_file)}}
end

rename.rb

require 'fileutils'
require 'pp'

file_util_options = {verbose: true}

Dir.glob("*.{jpg,mp4}").each do |original_file_name|
  matches = original_file_name.match(/^(\d{4})-(\d{2})-(\d{2})/)
  next unless matches
  year, month, day = matches[1..3]
  directory = File.join(year, month, day)
  FileUtils.mkdir_p(directory, file_util_options)
  FileUtils.mv(original_file_name, File.join(directory, original_file_name), file_util_options)
end