#!/bin/sh
# VanillaBun installer.
#
#   curl -fsSL https://vanillabun.org/install.sh | sh
#   curl -fsSL https://vanillabun.org/install.sh | sh -s my-app   # custom directory
#
# Downloads the current template and unpacks it. No git history (you want a fresh
# start, not ours), and nothing to build — the app has zero runtime dependencies.
# You are piping a script to a shell, so read it first; that is why it is short.
set -eu

DIR="${1:-vanillabun}"
BASE="https://vanillabun.org"

for tool in curl tar; do
  command -v "$tool" >/dev/null 2>&1 || { echo "vanillabun: $tool is required" >&2; exit 1; }
done

if [ -e "$DIR" ] && [ -n "$(ls -A "$DIR" 2>/dev/null || true)" ]; then
  echo "vanillabun: '$DIR' already exists and is not empty — refusing to overwrite" >&2
  exit 1
fi

# The cache-buster is deliberate: a CDN copy of the tarball could be hours stale, and
# silently installing yesterday's template is worse than one extra origin request.
mkdir -p "$DIR"
curl -fsSL "$BASE/public/vanillabun.tar.gz?t=$(date +%s)" | tar -xzf - -C "$DIR" --strip-components=1

echo "VanillaBun unpacked into $DIR/"
echo
if command -v bun >/dev/null 2>&1; then
  echo "  cd $DIR && bun install && bun run dev"
else
  echo "  Bun first:  curl -fsSL https://bun.sh/install | bash"
  echo "  then:       cd $DIR && bun install && bun run dev"
fi
echo
echo "'bun install' pulls dev-only tooling (typescript, @types/bun); the app itself"
echo "ships zero runtime dependencies. Then open it in Claude Code and type /vanillabun."