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#compdef dconf

local curcontext="$curcontext" state line cmds ret=1
local cmd=$words[1]

cmds=(
  'help:display help information'
  'read:read the value of a key'
  'list:list the contents of a directory'
  'write:change the value of a key'
  'reset:reset the value of a key or directory'
  'compile:compile a binary database from keyfiles'
  'update:update the system databases'
  'watch:watch a path for changes'
  'dump:dump an entire subpath to stdout'
  'load:populate a subpath from stdin'
)

if (( CURRENT == 2 )); then
  _describe -t commands command cmds
  return
fi

curcontext="${curcontext%:*}-$words[2]:"
shift words
(( CURRENT-- ))

case $words[1] in
  dump|list|load) state=dirs ;;
  watch) state=keys ;;
  read)
    _arguments -A "-*" '-d[read default values]' '1:key:->keys' && ret=0
  ;;
  write)
    _arguments '1:key:->keys' '2:value' && ret=0
  ;;
  reset)
    _arguments -A "-*" '-f[reset entire directory]' '1:key:->keys' && ret=0
    [[ $+opt_args[-f] = 1 && state = keys ]] && state=dirs
  ;;
  compile)
    _arguments '1:file:_files' '2:path:_directories' && ret=0
  ;;
  help)
    _describe -t commands command cmds && ret=0
  ;;
  *) _default && ret=0 ;;
esac

case $state in
  keys)
    compset -P '*/'
    dirs=( ${${${(f)"$(_call_program keys dconf _complete \'\' "${IPREFIX:-/}")"}#$IPREFIX}%% #} )
    _tags keys
    while _tags; do
      if _requested keys; then
        _description keys expl keu
        compadd "$expl[@]" -qS ' ' ${dirs:#*/} && ret=0
        compadd "$expl[@]" -S '' ${(M)dirs:#*/} && ret=0
      fi
      (( ret )) || break
    done
  ;;
  dirs)
    compset -P '*/'
    _wanted keys expl directory compadd -S '' - \
        ${${(f)"$(_call_program keys dconf _complete / "${IPREFIX:-/}")"}#$IPREFIX} && ret=0
  ;;
esac

return ret