require 'puppet/provider/parsedfile'

Puppet::Type.type(:mailalias).provide(
  :aliases,
  :parent => Puppet::Provider::ParsedFile,
  :default_target => "/etc/aliases",
  :filetype => :flat
) do
  text_line :comment, :match => /^#/
  text_line :blank, :match => /^\s*$/

  record_line :aliases, :fields => %w{name recipient}, :separator => /\s*:\s*/, :block_eval => :instance do
    def post_parse(record)
      record[:recipient] = record[:recipient].split(/\s*,\s*/).collect { |d| d.gsub(/^['"]|['"]$/, '') }
      record
    end

    def process(line)
      ret = {}
      records = line.split(':',2)
      ret[:name] = records[0].strip
      ret[:recipient] = records[1].strip
      ret
    end

    def to_line(record)
      dest = record[:recipient].collect do |d|
        # Quote aliases that have non-alpha chars
        if d =~ /[^-\w@.]/
          '"%s"' % d
        else
          d
        end
      end.join(",")
      "#{record[:name]}: #{dest}"
    end
  end
end