Pre Commit for Cache Busting for js and css

gistfile1.txt

#!/bin/bash

# Function to bump version number in a string (e.g., 2.3 → 2.4)
bump_version() {
  local version=$1
  local major=$(echo $version | cut -d. -f1)
  local minor=$(echo $version | cut -d. -f2)
  minor=$((minor + 1))
  echo "$major.$minor"
}

# Get list of staged js and css files
changed_files=$(git diff --cached --name-only --diff-filter=ACM | grep -E '\.(js|css)$')

if [ -z "$changed_files" ]; then
  echo "No JS or CSS files changed. Skipping version bump."
  exit 0
fi

# Files to search for references (adjust extensions as needed)
search_files=$(git ls-files | grep -E '\.(html|jsp|htm)$')

for changed_file in $changed_files; do
  # Extract filename only
  filename=$(basename "$changed_file")

  # Escape slashes for grep using alternate delimiter for sed
  escaped_filename=$(echo "$filename" | sed 's|/|\\/|g')

  # For each search file, check if it contains reference to changed file with version param
  for file in $search_files; do
    if grep -q "$escaped_filename?v=" "$file"; then
      # Extract current version using grep -E and sed instead of grep -P
      current_version=$(grep -Eo "$escaped_filename\?v=[0-9]+\.[0-9]+" "$file" | head -1 | sed -E "s/.*\?v=([0-9]+\.[0-9]+)/\1/")
      if [ -n "$current_version" ]; then
        new_version=$(bump_version "$current_version")
        # Replace old version with new version using sed with backup suffix for macOS
        sed -i.bak "s/$escaped_filename?v=$current_version/$escaped_filename?v=$new_version/g" "$file"
        rm -f "$file.bak"
        echo "Bumped version of $filename in $file from $current_version to $new_version"
        # Stage the modified file
        git add "$file"
      fi
    fi
  done
done

exit 0