A shell script to merge updated writebook rails source code with an existing git repo of a previous version

rsync-writebook-source.sh

#!/bin/bash

# WARNING
# =======
# 
# I'm not responsible for any accidental loss or damage to your code if you run this.
# It works for me, in my setup, but that doesn't mean it will definitely work for you.
#

# Check if the source and destination directories are provided
if [ -z "$1" ] || [ -z "$2" ]; then
  echo "Usage: $0 /path/to/source_folder /path/to/repo_folder"
  exit 1
fi

# Define variables
SOURCE_DIR="$1"
DEST_DIR="$2"

# Exclude patterns
EXCLUDE_PATTERNS=(
  '.git'
  '.gitignore'
  '.ruby-version'
  'Gemfile.lock'
  '*.sqlite3'
  'storage'
  'log'
  'tmp'
)

# Build the rsync exclude options
RSYNC_EXCLUDES=""
for PATTERN in "${EXCLUDE_PATTERNS[@]}"; do
  RSYNC_EXCLUDES="$RSYNC_EXCLUDES --exclude=$PATTERN"
done

# Perform a dry run first and capture the output
echo "Performing dry run of rsync to ensure correct exclusions..."
DRY_RUN_OUTPUT=$(rsync -nav --delete --ignore-existing $RSYNC_EXCLUDES "$SOURCE_DIR/" "$DEST_DIR/")

# Display the dry run output
echo "$DRY_RUN_OUTPUT"

# Check if there are any files marked for deletion
DELETE_LIST=$(echo "$DRY_RUN_OUTPUT" | grep '^deleting ')

if [ -n "$DELETE_LIST" ]; then
  echo "The following files are marked for deletion in the destination directory:"
  echo "$DELETE_LIST"
  read -p "Do you want to continue with these deletions? (y/n): " CONFIRM
  if [[ "$CONFIRM" != "y" ]]; then
    echo "Aborting operation."
    exit 1
  fi
fi

# Perform the actual rsync operation
echo "Performing actual rsync..."
rsync -a --delete $RSYNC_EXCLUDES "$SOURCE_DIR/" "$DEST_DIR/"

echo "Writebook files have been merged into $DEST_DIR"