# bash completion for cryptsetup

have cryptsetup || return

_cryptsetup_name()
{
    COMPREPLY=( $( compgen -X control -W '$( command ls /dev/mapper )' \
        -- "$cur" ) )
}

_cryptsetup_device()
{
    cur=${cur:=/dev/}
    _filedir
}

_cryptsetup()
{
    local cur prev words cword split
    _init_completion -s || return

    case $prev in
        --key-file|--master-key-file|--header-backup-file|-d)
            _filedir
            return 0
            ;;
    esac

    $split && return

    local arg
    _get_first_arg
    if [ -z $arg ]; then
        if [[ "$cur" == -* ]]; then
            COMPREPLY=( $( compgen -W '$( _parse_help "$1" )' -- "$cur" ) )
            [[ $COMPREPLY == *= ]] && compopt -o nospace
        else
            COMPREPLY=( $( compgen -W 'create remove status resize luksFormat \
                luksOpen luksClose luksSuspend luksResume luksAddKey \
                luksRemoveKey luksKillSlot luksDelKey luksUUID isLuks \
                luksDump luksHeaderBackup luksHeaderRestore' -- "$cur" ) )
        fi
    else
        local args
        _count_args
        case $arg in
            create)
                case $args in
                    2)
                        _cryptsetup_name
                        ;;
                    3)
                        _cryptsetup_device
                        ;;
                esac
                ;;
            remove|status|resize|luksClose|luksSuspend|luksResume)
                case $args in
                    2)
                        _cryptsetup_name
                        ;;
                esac
                ;;
            luksFormat|luksAddKey|luksRemoveKey)
                case $args in
                    2)
                        _cryptsetup_device
                        ;;
                    3)
                        _filedir
                        ;;
                esac
                ;;
            luksOpen)
                case $args in
                    2)
                        _cryptsetup_device
                        ;;
                    3)
                        _cryptsetup_name
                        ;;
                esac
                ;;
            luksKillSlot|luksDelKey|luksUUID|isLuks|luksDump)
                case $args in
                    2)
                        _cryptsetup_device
                        ;;
                esac
                ;;
            luksHeaderBackup|luksHeaderRestore)
                case $args in
                    2)
                        _cryptsetup_device
                        ;;
                    3)
                        COMPREPLY=( '--header-backup-file' )
                        ;;
                    esac
                ;;
        esac
    fi

    return 0
} &&
complete -F _cryptsetup cryptsetup

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