# bash completion for slackpkg tool
# options list is based on `grep '\-.*\=.*)' /usr/sbin/slackpkg | cut -f1 -d\)`

have slackpkg || return

_slackpkg()
{
    local cur prev words cword
    _init_completion -n = || return

    local split=false
    if [[ "$cur" == -?*=* ]]; then
        prev="${cur%%?(\\)=*}"
        cur="${cur#*=}"
        split=true
    fi

    case "$prev" in
        -delall|-checkmd5|-checkgpg|-checksize|-postinst|-onoff|-download_all|\
        -dialog|-batch|-only_new_dotnew|-use_includes|-spinning)
            COMPREPLY=( $( compgen -W 'on off' -- "$cur" ) )
            return 0
            ;;
        -default_answer)
            COMPREPLY=( $( compgen -W 'yes no' -- "$cur" ) )
            return 0
            ;;
        -dialog_maxargs|-mirror)
            # argument required but no completions available
            return 0
            ;;
    esac

    $split && return 0

    if [[ "$cur" == -* ]]; then
        compopt -o nospace
        COMPREPLY=( $( compgen -W '-delall= -checkmd5= -checkgpg= \
            -checksize= -postinst= -onoff= -download_all= -dialog= \
            -dialog_maxargs= -batch= -only_new_dotnew= -use_includes= \
            -spinning= -default_answer= -mirror=' -- "$cur" ) )
        return 0
    fi

    local confdir="/etc/slackpkg"
    local config="$confdir/slackpkg.conf"

    if [ ! -r "$config" ]; then
        return 0
    fi
    . "$config"

    local i action
    for (( i=1; i<${#words[@]}; i++ )); do
        if [[ "${words[i]}" != -* ]]; then
            action="${words[i]}"
            break
        fi
    done

    case "$action" in
        generate-template|search|file-search)
            # argument required but no completions available
            return 0
            ;;
        install-template|remove-template)
            if [ -e "$confdir/templates" ]; then
                COMPREPLY=( $( cd "$confdir/templates"; \
                    compgen -f -X "!*.template" -- "$cur" ) )
                COMPREPLY=( ${COMPREPLY[@]%.template} )
            fi
            return 0
            ;;
        remove)
            _filedir
            COMPREPLY+=( $( compgen -W 'a ap d e f k kde kdei l n t tcl x \
                xap y' -- "$cur" ) )
            COMPREPLY+=( $( cd /var/log/packages; compgen -f -- "$cur" ) )
            return 0
            ;;
        install|reinstall|upgrade|blacklist|download)
            _filedir
            COMPREPLY+=( $( compgen -W 'a ap d e f k kde kdei l n t tcl x \
                xap y' -- "$cur" ) )
            COMPREPLY+=( $( cut -f 6 -d\  ${WORKDIR}/pkglist 2> /dev/null | \
                grep "^$cur" ) )
            return 0
            ;;
        info)
            COMPREPLY+=( $( cut -f 6 -d\  ${WORKDIR}/pkglist 2> /dev/null | \
                grep "^$cur" ) )
            return 0
            ;;
        update)
            # we should complete the same as the next `list` + "gpg"
            COMPREPLY=( $( compgen -W 'gpg' -- "$cur" ) )
            ;&
        *)
            COMPREPLY+=( $( compgen -W 'install reinstall upgrade remove \
                blacklist download update install-new upgrade-all \
                clean-system new-config check-updates help generate-template \
                install-template remove-template search file-search info' -- \
                "$cur" ) )
            return 0
            ;;
    esac

} && complete -F _slackpkg slackpkg

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