#!/usr/bin/env bash

HELP="Usage: sync [-h]

Sync a source with a Git repository target.

Parameters
    Environmntal variables
        FRIPOST_SYNC_SRC      set source directory
    -h                        help

Set target directory where the repository is found and script
executed. Set source directory to for example a shared folder.  Make
sure that all pahts are absolute."

EXCL="
*~*
*#*
Readme.md
"

trg="$PWD"
src="$FRIPOST_SYNC_SRC"
excl=$XDG_RUNTIME_DIR/${0##*/}-excl

if [ "$1" == "-h" ]; then echo "$HELP"; exit; fi
if [ ! -d "$src" -o ! -d "$trg" ]; then
    echo -n "Suorce '$src' and target '$trg' must be valid directories."
    echo " See help: '${0} -h'."
    exit 1
fi

echo  "${0##*/}: I: Sync '${src}' to '${trg}'" 1>&2

echo "$EXCL" > $excl

rsync -a --delete -P --exclude-from=$excl "${src}"/ "${trg}"/ \
      | grep -iv "^sending"
git -C "${trg}" status --short --branch