#!/bin/sh
# Pulsar bootstrap: installs the CLI from GitHub Releases for this platform.
# Requires Bun (https://bun.sh). The toolchain (Qt host) is fetched separately
# with `pulsar install`.
set -eu

REPO="${PULSAR_REPO:-riclud/pulsar}"
PULSAR_HOME="${PULSAR_HOME:-$HOME/.local/share/pulsar}"
BIN_DIR="${PULSAR_BIN_DIR:-$HOME/.local/bin}"

os=$(uname -s | tr 'A-Z' 'a-z')
case "$os" in
  linux) os=linux ;;
  darwin) os=macos ;;
  *) echo "pulsar: unsupported OS: $os" >&2; exit 1 ;;
esac

arch=$(uname -m)
case "$arch" in
  x86_64 | amd64) arch=x64 ;;
  aarch64 | arm64) arch=arm64 ;;
  *) echo "pulsar: unsupported architecture: $arch" >&2; exit 1 ;;
esac
platform="$os-$arch"

if ! command -v bun >/dev/null 2>&1; then
  echo "pulsar: Bun is required but was not found." >&2
  echo "  Install it from https://bun.sh, then re-run this installer." >&2
  exit 1
fi

asset="pulsar-cli-$platform.tar.gz"
url="https://github.com/$REPO/releases/latest/download/$asset"
tmp=$(mktemp -d)
trap 'rm -rf "$tmp"' EXIT

echo "pulsar: downloading $asset"
if command -v curl >/dev/null 2>&1; then
  curl -fsSL "$url" -o "$tmp/$asset"
elif command -v wget >/dev/null 2>&1; then
  wget -qO "$tmp/$asset" "$url"
else
  echo "pulsar: need curl or wget" >&2
  exit 1
fi

mkdir -p "$tmp/stage"
tar -xzf "$tmp/$asset" -C "$tmp/stage"
version=$(sed -n 's/.*"version": *"\([^"]*\)".*/\1/p' "$tmp/stage/cli/package.json" | head -1)
if [ -z "$version" ]; then
  echo "pulsar: could not determine the CLI version from the archive" >&2
  exit 1
fi

dest="$PULSAR_HOME/versions/$version"
rm -rf "$dest"
mkdir -p "$dest"
cp -a "$tmp/stage/." "$dest/"

ln -sfn "versions/$version" "$PULSAR_HOME/current"

mkdir -p "$BIN_DIR"
cat > "$BIN_DIR/pulsar" <<EOF
#!/bin/sh
exec bun "$PULSAR_HOME/current/cli/index.ts" "\$@"
EOF
chmod +x "$BIN_DIR/pulsar"

echo "pulsar: installed $version to $dest"
echo "  binary: $BIN_DIR/pulsar"
case ":$PATH:" in
  *":$BIN_DIR:"*) ;;
  *) echo "  add $BIN_DIR to your PATH" ;;
esac
echo "  next: pulsar install"