#compdef apt-file

_apt-file() {
  local -a arguments
  local state line cmds 
  arguments=(
    '(--cache -c)'{--cache,-c}'[cache directory]:directory:_directories'
    '(-v --verbose)'{-v,--verbose}'[verbose]'
     '(--cdrom-mount -d)'{--cdrom-mount,-d}'[cdrom mount point]:directory:_directories'
     '(--ignore-case -i)'{--ignore-case,-i}'[ignore case]'
     '(--regexp -r)'{--regexp,-r}'[regular expression]'
     '(-V --version)'{-V,--version}'[version]'
     '(-a --architecture)'{-a,--architecture}'[architecture]:architecture:(alpha arm hppa hurd-i386 i386 ia64 m68k mips mipsel powerpc s390 sparc)'
    '(-s --sources-list)'{-s,--sources-list}'[source.list file]:file:_files'
    '(-l --package-only)'{-l,--package-only}'[only display package name]'
    '(-F --fixed-string)'{-F,--fixed-string}'[do not expand search pattern]'
    '(-y --dummy)'{-y,--dummy}'[run in dummy mode]'
    '(-h --help)'{-h,--help}'[display help screen]'
    '1: :->cmds'
    '*: :->args'
  )
    _arguments -S $arguments

    case $state in
      cmds)
        cmds=(
            'update:resynchronize package contents'
            'search:search in which package file is included'
            'list:list contents of a package'
            'show:alias for list'
            'purge:remove all Contents-<ARCH>.gz files in cache directory'
        )
        _describe -t commands 'apt-list command' cmds && ret=0
      ;;
      args)
        case $line[1] in
            search)
                _message "pattern"
            ;;
            list|show)
               _deb_packages avail 
            ;;
            update|purge)
                # do nothing
            ;;
            *)
                _message "command $line[1] not available"
            ;;
        esac
      ;;
    esac

}

_apt-file "$@"