#!/usr/bin/env bash

#

# fetch-libnode.sh — vendor libnode.so + headers from nodejs-mobile releases

#

# Downloads the prebuilt Android binaries from

# https://github.com/nodejs-mobile/nodejs-mobile/releases and unpacks them

# into app/libnode/. Both bin/<abi>/libnode.so and include/ are referenced

# by app/src/main/cpp/CMakeLists.txt; gradle's externalNativeBuild reads them

# from there.

#

# Usage:

# ./scripts/fetch-libnode.sh # latest release

# ./scripts/fetch-libnode.sh v18.20.4 # pinned version

#

# The libnode/ directory is gitignored; CI and dev boxes run this once per

# version pin. ABI filter (arm64-v8a, armeabi-v7a) is applied at the gradle

# layer; this script unpacks all four ABIs from the upstream zip.

set -euo pipefail

REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"

DEST="$REPO_ROOT/app/libnode"

VERSION="${1:-v18.20.4}"

RELEASE_URL="https://github.com/nodejs-mobile/nodejs-mobile/releases/download/$VERSION/nodejs-mobile-${VERSION}-android.zip"

TMPDIR="$(mktemp -d)"

trap 'rm -rf "$TMPDIR"' EXIT

echo "==> Downloading $VERSION from $RELEASE_URL"

curl -fL --progress-bar "$RELEASE_URL" -o "$TMPDIR/libnode.zip"

echo "==> Unpacking to $DEST"

mkdir -p "$DEST"

rm -rf "${DEST:?}"/*

unzip -q "$TMPDIR/libnode.zip" -d "$DEST"

# The release ships a top-level dir; flatten it so app/libnode/{bin,include}

# matches the CMakeLists path expectation.

shopt -s dotglob nullglob

for inner in "$DEST"/nodejs-mobile-*; do

if [ -d "$inner" ]; then

mv "$inner"/* "$DEST/"

rmdir "$inner"

fi

done

# Sanity: at least the arm64-v8a and armeabi-v7a libnode.so should exist

for abi in arm64-v8a armeabi-v7a; do

so="$DEST/bin/$abi/libnode.so"

if [ ! -f "$so" ]; then

echo "ERROR: missing $so after unpack" >&2

exit 1

fi

size=$(stat -c%s "$so")

printf " %-15s %s (%d bytes)\n" "$abi" "$so" "$size"

done

cat > "$DEST/.libnode-info" <<EOF

nodejs-mobile $VERSION

fetched at $(date -u +%Y-%m-%dT%H:%M:%SZ)

source: $RELEASE_URL

EOF

echo

echo "Done."

echo " Version: $VERSION"

echo " Path: $DEST"