Extract and export code example into an archive

export_code_example

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

SOURCE_DIRECTORY = File.expand_path raise 'Path to source directory is not set'
Dir.chdir SOURCE_DIRECTORY

TARGET_NAME = raise 'Target name is not set'
ARCHIVE_NAME = "#{TARGET_NAME}.zip"
TARGET_DIRECTORY = File.expand_path "../#{TARGET_NAME}"
ARCHIVE_TAGET_DIRECTORY = raise 'Archive target directory is not set'

# Copy code and README
%w(app spec).each do |path|
  source = File.join File.expand_path(path), 'services'
  target = File.join TARGET_DIRECTORY, path
  FileUtils.remove_dir target, :force
  FileUtils.mkdir_p target
  FileUtils.cp_r source, target
end
FileUtils.cp 'EXAMPLE_README.md', File.join(TARGET_DIRECTORY, 'README.md')

# Remove hidden files
(
  Dir.glob("#{TARGET_DIRECTORY}/.*DS_Store", File::FNM_DOTMATCH) + \
  Dir.glob("#{TARGET_DIRECTORY}/.*.sw[op]", File::FNM_DOTMATCH) + \
  Dir.glob("#{TARGET_DIRECTORY}/**/.*DS_Store", File::FNM_DOTMATCH) + \
  Dir.glob("#{TARGET_DIRECTORY}/**/.*.sw[op]", File::FNM_DOTMATCH)
).each do |path|
  FileUtils.remove_entry path, :force
end

# Create an archive
Dir.chdir File.expand_path '..'
FileUtils.remove_entry ARCHIVE_NAME, :force
system "zip -r '#{ARCHIVE_NAME}' '#{TARGET_NAME}'"

# Move archive to Dropbox
FileUtils.cp ARCHIVE_NAME, File.expand_path(File.join(ARCHIVE_TAGET_DIRECTORY, ARCHIVE_NAME))