# This file is in the public domain.

_arch_compgen() {
  local i r
  COMPREPLY=($(compgen -W '$*' -- "$cur"))
  for ((i = 1; i < ${#COMP_WORDS[@]} - 1; i++)); do
    for r in ${!COMPREPLY[@]}; do
      if [[ ${COMP_WORDS[i]} == ${COMPREPLY[r]} ]]; then
        unset 'COMPREPLY[r]'
        break
      fi
    done
  done
}

_arch_ptr2comp() {
  local list= x y
  for x; do
    for y in '0 --' '1 -'; do
      eval 'set -- ${'$x'[${y% *}]}'
      list+=\ ${@/#/${y#* }}
    done
  done
  _arch_compgen $list
}

_arch_incomp() {
  local r="[[:space:]]-(-${1#* }[[:space:]]|[[:alnum:]_]*${1% *})"
  [[ $COMP_LINE =~ $r ]]
}

_pacman_pkg() {
  _arch_compgen "$(
    if [[ $2 ]]; then
      \pacman -$1 2>/dev/null | \cut -d' ' -f1 | \sort -u
    else
      \pacman -$1 2>/dev/null
    fi
  )"
}

_yay_pkg() {
  [ -z "$cur" ] && _pacman_pkg Slq && return
  _arch_compgen "$(yay -Pc)"
}

_pacman_repo_list() {
  _arch_compgen "$(pacman-conf --repo-list)"
}

_yay() {
  compopt -o default
  local common core cur database files prev query remove sync upgrade o
  local yays show getpkgbuild web
  local cur prev words cword

  _init_completion || return
  database=('asdeps asexplicit')
  files=('list machinereadable refresh regex' 'l x y')
  query=('changelog check deps explicit file foreign groups info list native owns
          search unrequired upgrades' 'c e g i k l m n o p s t u')
  remove=('cascade dbonly nodeps assume-installed nosave print recursive unneeded' 'c n p s u')
  sync=('asdeps asexplicit clean dbonly downloadonly overwrite groups ignore ignoregroup
         info list needed nodeps assume-installed print refresh recursive search sysupgrade'
    'c g i l p s u w y')
  upgrade=('asdeps asexplicit overwrite needed nodeps assume-installed print recursive' 'p')
  core=('database files help query remove sync upgrade version' 'D F Q R S U V h')

  ##yay stuff
  common=('arch cachedir color config confirm dbpath debug gpgdir help hookdir logfile
          noconfirm noprogressbar noscriptlet quiet root verbose
          makepkg pacman git gpg gpgflags config requestsplitn sudoloop
          redownload noredownload redownloadall rebuild rebuildall rebuildtree norebuild sortby
          singlelineresults doublelineresults answerclean answerdiff answeredit answerupgrade noanswerclean noanswerdiff
          noansweredit noanswerupgrade cleanmenu diffmenu editmenu cleanafter keepsrc
          provides pgpfetch
          useask combinedupgrade aur repo makepkgconf
          nomakepkgconf askremovemake askyesremovemake removemake noremovemake completioninterval aururl aurrpcurl
          searchby batchinstall'
    'b d h q r v')
  yays=('clean gendb' 'c')
  show=('complete defaultconfig currentconfig stats news' 'c d g s w')
  getpkgbuild=('force print' 'f p')
  web=('vote unvote' 'v u')

  for o in 'D database' 'F files' 'Q query' 'R remove' 'S sync' 'U upgrade' 'Y yays' 'P show' 'G getpkgbuild' 'W web'; do
    _arch_incomp "$o" && break
  done

  if [[ $? != 0 ]]; then
    _arch_ptr2comp core
  elif [[ ! $prev =~ ^-[[:alnum:]_]*[Vbhr] && ! $prev == --@(cachedir|color|config|dbpath|help|hookdir|gpgdir|logfile|root|version) ]]; then
    [[ $cur == -* ]] && _arch_ptr2comp ${o#* } common ||
      case ${o% *} in
      D | R)
        _pacman_pkg Qq
        ;;
      F)
        { _arch_incomp 'l list' && _pacman_pkg Slq; } ||
          _arch_incomp 'o owns' ||
          compopt +o default
        ;;
      Q)
        { _arch_incomp 'g groups' && _pacman_pkg Qg sort; } ||
          { _arch_incomp 'p file' && _pacman_file; } ||
          { _arch_incomp 's search' && compopt +o default; } ||
          { _arch_incomp 'u upgrades' && compopt +o default; } ||
          _arch_incomp 'o owns' ||
          _pacman_pkg Qq
        ;;
      S)
        { _arch_incomp 'g groups' && _pacman_pkg Sg; } ||
          { _arch_incomp 'l list' && _pacman_repo_list; } ||
          { _arch_incomp 's search' && compopt +o default; } ||
          _yay_pkg
        ;;
      U)
        _pacman_file
        ;;
      G)
        _yay_pkg
        ;;
      W)
        _yay_pkg
        ;;
      esac
  fi
  true
}

_pacman_file() {
  compopt -o filenames
  _filedir 'pkg.*'
}

complete -F _yay yay

# ex:et ts=2 sw=2 ft=sh