set -euo pipefail

new_pkg="${1:-}"; app="${2:-}"

[[ "$new_pkg" =~ ^[a-z][a-z0-9_]*(\.[a-z][a-z0-9_]*)+$ ]] || { echo "usage: $0 <new.base.package> <app-name> (package: lowercase dotted, at least two segments)" >&2; exit 2; }

[[ "$app" =~ ^[a-z][a-z0-9-]*$ ]] || { echo "app-name: lowercase letters, digits, dashes (used for rootProject.name and APP_NAME)" >&2; exit 2; }

root="$(git rev-parse --show-toplevel)"

cd "$root"

if [[ -n "$(git status --porcelain)" ]]; then

echo "Refusing: working tree is not clean. Commit or stash first so the rename is one reviewable diff." >&2

exit 1

old_pkg="com.example.company"

old_name="spring-template"

old_dir="${old_pkg//./\/}"; new_dir="${new_pkg//./\/}"

old_pkg_re="${old_pkg//./\\.}"

for src in services/app/src/main/java services/app/src/test/java; do

[[ -d "$src/$old_dir" ]] || continue

mkdir -p "$src/$new_dir"

# Move contents (not the directory) so a new package that shares a prefix with the old one still works.

find "$src/$old_dir" -mindepth 1 -maxdepth 1 -exec mv -t "$src/$new_dir/" {} +

# Remove the now-empty old tree, bottom-up, stopping at the first non-empty parent.

d="$src/$old_dir"; while [[ "$d" != "$src" ]] && rmdir "$d" 2>/dev/null; do d="$(dirname "$d")"; done

{ grep -rl --exclude-dir=.git --exclude-dir=build --exclude-dir=.gradle --exclude-dir=superpowers --exclude-dir=bricks \

--exclude-dir=tests --exclude="$(basename "$0")" -e "$old_pkg" -e "$old_dir" . || true; } \

| xargs -r sed -i -e "s#${old_pkg_re}#${new_pkg}#g" -e "s#${old_dir}#${new_dir}#g"

sed -i "s#rootProject.name = \"${old_name}\"#rootProject.name = \"${app}\"#" settings.gradle.kts

sed -i -E "s#(APP_NAME:-?)${old_name}#\1${app}#g" compose.yml services/app/src/main/resources/application.yml

sed -i "s#^APP_NAME=${old_name}\$#APP_NAME=${app}#" .env.example

[[ -f CLAUDE.md ]] && sed -i "s#${old_name}#${app}#g" CLAUDE.md

[[ -f README.md ]] && sed -i "s#${old_name}#${app}#g" README.md

cat <<DONE