# Needed for rm_r.
require 'fileutils'

require 'common/filesystem'
require 'common/mailstore'
require 'common/dovecot_mailstore_plugin'
require 'rm/rm_plugin'

class DovecotMailstoreRm < Mailstore

  include DovecotMailstorePlugin
  include RmPlugin


  def delete_domain(domain)
    domain_path = self.get_domain_path(domain)
    FileUtils.rm_r(domain_path)
  end

  def delete_account(account)
    account_path = self.get_account_path(account)
    FileUtils.rm_r(account_path)
  end

  def get_leftover_domains(db_domains)
    # Get the list of domains according to the filesystem.
    fs_domains = self.get_domains_from_filesystem()

    # Return the list of domains on the filesystem that aren't in the DB.
    return (fs_domains - db_domains)
  end

  def get_leftover_accounts(db_accounts)
    # Get the list of accounts according to the filesystem.
    fs_domains = self.get_domains_from_filesystem()
    fs_accounts = self.get_accounts_from_filesystem(fs_domains)

    # And return the accounts on the filesystem that aren't in the DB.
    return (fs_accounts - db_accounts)
  end


  protected;

  def get_domains_from_filesystem()
    return Filesystem.get_subdirs(@domain_root)
  end

  def get_accounts_from_filesystem(domains)
    accounts = []

    domains.each do |domain|
      begin
        # Throws a NonexistentDomainError if the domain's path
        # doesn't exist on the filesystem. In this case, we want
        # to report zero accounts.
        domain_path = get_domain_path(domain)
        usernames = Filesystem.get_subdirs(domain_path)

        usernames.each do |username|
          accounts << "#{username}@#{domain}"
        end
      rescue NonexistentDomainError
        # Party hard.
      end
    end

    return accounts
  end


end