rfync

#!/bin/bash

# WARNING

# As of 2023-04 I have moved from this to `zclone` -- a similar tool that
# targets rclone.  Rclone is NOT a perfect replacement for rsync (see comments
# in `zclone` that describe the two biggest ones), but I have found that for
# my most common use cases rclone's limitations don't matter, while it is much
# faster.

# YMMV :)

set -o pipefail
# set -x
export PS4='`[[ $? == 0 ]] || echo "\e[1;31;40m($?)\e[m\n "`:.$LINENO:'

[[ -z $1 ]] && {
    cat <<-EOF >&2
	warning: no error checking for arguments
	Usage:

	    cd /local/directory
	        THEN
	    rfync hostname get remote-base-dir
	        OR
	    rfync hostname put remote-base-dir

	the "remote-base-dir" is just because I usually only have a few
	easy-to-type directories on the remote, but I guess I could fuzzy search
	*that* also...
	EOF
    exit 1
}

# put in whatever you want, except "--multi"
export FZF_DEFAULT_OPTS="--exact --no-sort --reverse --info=inline"

sel_l() {
    [[ ${1:-} == -m ]] && {
        shift
        FZF_DEFAULT_OPTS="$FZF_DEFAULT_OPTS --multi"
    }
    bindd="--bind=ctrl-d:reload(find . -type d | sort -f)"
    bindf="--bind=ctrl-f:reload(find . -type f | sort -f)"
    [[ $op == get ]] && find . -type d | fzf                   --header="select local destination"
    [[ $op == put ]] && find . -type d | fzf "$bindd" "$bindf" --header="select local source files or directories; use ctrl-d/f to switch"
}

sel_r() {
    [[ ${1:-} == -m ]] && {
        shift
        FZF_DEFAULT_OPTS="$FZF_DEFAULT_OPTS --multi"
    }
    bindd="--bind=ctrl-d:reload(ssh $host 'cd $rembase; find . -type d' | sort -f)"
    bindf="--bind=ctrl-f:reload(ssh $host 'cd $rembase; find . -type f' | sort -f)"
    [[ $op == put ]] && ssh $host "cd '$rembase'; find . -type d" | fzf                   --header="select REMOTE destination"
    [[ $op == get ]] && ssh $host "cd '$rembase'; find . -type d" | fzf "$bindd" "$bindf" --header="select REMOTE source files or directories; use ctrl-d/f to switch"
}

get() {
    echo >&2 "NOTE: add '--delete' if needed"
    set -x
    printf "%s\n" "${rfs[@]}" | rsync -avP -r --files-from - "$host:$rembase" "$ld"
}

put() {
    echo >&2 "NOTE: add '--delete' if needed"
    set -x
    rsync -avP -R --rsync-path="cd '$rembase' && rsync" "${lfs[@]}" "$host:$rd"
}

# my hostnames are short enough I can just type them in as arg-1
host=$1
op=$2
rembase=$3

case $op in
    get )
        ld=`sel_l`
        [[ -z $ld       ]] && exit 2
        mapfile -t rfs < <(sel_r -m)
        [[ -z ${rfs[0]} ]] && exit 2
        get
        ;;
    put )
        rd=`sel_r`
        [[ -z $rd       ]] && exit 2
        mapfile -t lfs < <(sel_l -m)
        [[ -z ${lfs[0]} ]] && exit 2
        put
        ;;
esac