# Needed for rm_rf.
require 'fileutils'

require 'common/filesystem'
require 'common/mailstore'
require 'common/plugin'
require 'mv/mv_plugin'

class DovecotMailstoreMv < Mailstore

  include Plugin
  include MvPlugin

  def initialize
    cfg = Configuration.new()
    @domain_root = cfg.mail_root
  end

  def describe_domain(domain)
    begin
      domain_path = get_domain_path(domain)
      return domain_path
    rescue NonexistentDomainError => e
      return "Doesn't exist: #{e.to_s}"
    end
  end

  def describe_account(account)
    begin
      account_path = get_account_path(account)
      return account_path
    rescue NonexistentAccountError => e
      return "Doesn't exist: #{e.to_s}"
    end
  end

  def mv_domain(from, to)
    from_path = self.get_domain_path(from)
    to_path = self.get_domain_path(to)
    FileUtils.mv(from_path, to_path)
  end

  def mv_account(from, to)
    from_path = self.get_account_path(from)
    to_path = self.get_account_path(to)
    FileUtils.mv(from_path, to_path)
  end

  protected;


  def get_domain_path(domain)
    # Return the filesystem path for the given domain.
    # That is, the directory where its mail is stored.
    # Only works if the domain directory exists!
    domain_path = File.join(@domain_root, domain)

    if File.directory?(domain_path)
      return domain_path
    else
      raise NonexistentDomainError.new(domain)
    end
  end


  def get_account_path(account)
    # Return the filesystem path of this account's mailbox.
    # Only works if the account exists!
    if not account.include?('@')
      msg = "#{account}: Accounts must contain an '@' symbol."
      raise InvalidAccountError.new(msg)
    end

    account_parts = account.split('@')
    user_part = account_parts[0]
    domain_part = account_parts[1]

    begin
      domain_path = get_domain_path(domain_part)
    rescue NonexistentDomainError
      raise NonexistentAccountError.new(account)
    end

    account_path = File.join(domain_path, user_part)

    if File.directory?(account_path)
      return account_path
    else
      raise NonexistentAccountError(account)
    end
  end

end