gistfile1.rb

module ProjectReader

  extend self # keep extract_keys 'module private'

  # finds keys in .erb files from a given directory
  def find_keys(path)
    repo_name = File.basename(path)
    if !File.directory?(path)
      raise "The directory #{repo_name} does not exist in #{File.dirname(path)}"
    end

    client_id = Client.find_by_repository_name( repo_name )
    if !client_id
      raise "The Client with the repository named #{repo_name} was not found in the DB"
    end

    found_keys = []
    found_keys = Dir["#{path}/**/*.erb"].reduce([],&extract_keys)
    if found_keys
      mark_missing_keys_as_deleted(found_keys, client_id)
    end
    found_keys
  end

  private

  # extracts keys from a given file and adds to a given array
  def extract_keys
    @extract_keys ||= lambda do |rval,path|
      rval += File.open(path,"r") do |file|
       file.read.scan(/@content\[\'(.+?)\'\]/).flatten
      end
    end
  end

  def mark_missing_keys_as_deleted(found_keys, client_id)
    client_id = Client.find(client_id)
    current_keys = TranslationKey.all(:conditions => {:client_id => client_id})
    missing_keys = current_keys.reject{|key| found_keys.include?(key.name)}

    missing_keys.each do |key|
      key.deleted = true
      key.save!
    end
  end

end