DSLab 14W Rename Submission Files from Harvest

rename_files.rb

#!/usr/bin/env ruby
require 'fileutils'

MAPPING='dslab14-account-mapping.txt'
FOLDER=ARGV.first || 'DSLab-Harvest-1237'
TARGET=File.join('processed')
Dir.mkdir(TARGET) rescue nil

# Map users to immatriculation numbers.
users = {}
File.open(MAPPING, 'r') do |file|
  file.each do |line|
    parts = line.split
    next if parts.length < 5
    user = parts[0]
    immatrnr = parts[4]
    users[user] = immatrnr
  end
end

Dir.new(FOLDER).each do |entry|
  user=entry.split('_').first
  next unless users.include?(user)
  base_path = File.join(FOLDER, entry)
  submission_filename = Dir.glob(File.join(base_path, "*.zip")).first
  next unless submission_filename
  
  # Rename to <immatr.nr>.zip
  puts "Copying from: #{submission_filename} to: #{File.join(TARGET, "#{users[user]}.zip")}"
  FileUtils.cp submission_filename, File.join(TARGET, "#{users[user]}.zip")
end