Ungoogled Chromium Extension Updater

ungoogled_chromium_extension_updater.sh

#!/usr/bin/env bash
#
# Downloads Chrome extensions
# dependencies:
# npm install -g chrome-web-store-item-property-cli
# brew install jq
# brew install curl
set -e

while getopts ":f" arg; do
  case $arg in
    f) force="true" ;;
    *) ;;
  esac
done

EXTENSIONS_DIR="$HOME/Library/Application Support/Chromium/Default/Extensions"
DOWNLOAD_DIR="$HOME/Nextcloud/Backups/Chrome Extensions Backups"
CHROMVER=$(/usr/libexec/PlistBuddy -c 'print CFBundleShortVersionString' /Applications/Chromium.app/Contents/Info.plist)
MAJVER=$(awk -F. '{printf "%d.%d",$1,$2}' <<< "$CHROMVER")

cd "$DOWNLOAD_DIR" || (echo "Download directory does not exist. Exiting"; exit)

NEW_EXTENSIONS=()

for f in "$EXTENSIONS_DIR"/*; do
  ID="${f##*/}"
  if [[ "$ID" == "Temp" ]]; then continue; fi
  JSON=$(chrome-web-store-item-property "$ID")
  NAME=$(jq -r '.name' <<< "$JSON")
  VERSION=$(jq -r '.version' <<< "$JSON")
  EXISTINGVERPATH=( "$f"/* )
  EXISTINGVER=("${EXISTINGVERPATH[@]##*/}")
  NEWESTPATH="${EXISTINGVERPATH[*]: -1}"
  NEWESTVER="${NEWESTPATH##*/}"
  NEWESTVERWITHOUTTRAILINGDIGIT="${NEWESTVER%_*}"

  echo ""
  echo "$NAME"
  echo "Newest version available: $VERSION"
  echo "Existing installed versions: ${EXISTINGVER[*]}"
  echo "Newest installed version (alphabetically): $NEWESTVERWITHOUTTRAILINGDIGIT"

  if [[ "$NEWESTVERWITHOUTTRAILINGDIGIT" == "$VERSION" ]] && [[ $force != "true" ]]; then
    echo "You have version '${EXISTINGVER[-1]}', which is probably the same. Skipping..."
    continue
  fi

  URL="https://clients2.google.com/service/update2/crx?response=redirect&&acceptformat=crx3&prodversion=$MAJVER&x=id%3D$ID%26installsource%3Dondemand%26uc"
  echo "Downloading $NAME - $VERSION..."
  curl -s -L "$URL" > "$DOWNLOAD_DIR/$NAME-$VERSION.crx"
  NEW_EXTENSIONS+=("$NAME-$VERSION.crx")
done

echo ""
echo ""
echo ""

if [[ "${#NEW_EXTENSIONS[@]}" -gt 1 ]]; then
  echo "New extensions downloaded:"
  for extension in "${NEW_EXTENSIONS[@]}"
  do
    echo "- $extension"
  done
  echo ""
  echo "Go to chrome://extensions and drag-and-drop in the new extensions."
else
  echo "No new updates."
fi