watch sync with rync

watch_sync.sh

#!/usr/bin/env bash
set -euo pipefail

DEBOUNCE_SEC="${DEBOUNCE_SEC:-0.2}"
SYNC_CMD="./sync_to_remote.sh" # https://gist.github.com/harderthan/d56aaf41bd7836fae011d74d55b46d4b
EXCLUDE_REGEX='(^|/)(\.git|__pycache__|\.venv|build|\.cache)(/|$)|(\.pyc$)'

sync_running=0
sync_pending=0

run_sync() {
  sync_running=1
  "${SYNC_CMD}"
  echo "[watch_sync] synced"
  sync_running=0
  if [[ "${sync_pending}" -eq 1 ]]; then
    sync_pending=0
    run_sync
  fi
}

inotifywait -m -r \
  -e modify,create,delete,move,close_write \
  --exclude "${EXCLUDE_REGEX}" \
  --format '%w%f' . | while read -r _; do
  sleep "${DEBOUNCE_SEC}"
  if [[ "${sync_running}" -eq 1 ]]; then
    sync_pending=1
  else
    run_sync
  fi
done