#!/usr/bin/env bash
# Cross-compiles better-sqlite3 for arm64-v8a and armeabi-v7a (real Android
# devices) and writes the resulting better_sqlite3.node binaries into
# nodejs-assets/nodejs-project/prebuilds/<abi>/. main.js installs the one
# matching the device's actual process.arch at runtime — see main.js's
# installBetterSqlite3Prebuild().
#
# The existing x86_64 build (emulator) in
# nodejs-assets/nodejs-project/node_modules/better-sqlite3/build/Release/
# already covers nodejs-assets/nodejs-project/prebuilds/x86_64/ via
# fix-better-sqlite3-android.sh; re-copy it manually if that build changes:
#   cp nodejs-assets/nodejs-project/node_modules/better-sqlite3/build/Release/better_sqlite3.node \
#      nodejs-assets/nodejs-project/prebuilds/x86_64/
#
# Requires: Android NDK (ANDROID_HOME or ANDROID_NDK_HOME set), and
# `npm install` already run in nodejs-assets/nodejs-project (so
# better-sqlite3's source + nodejs-mobile-gyp are present).
#
# Usage: ./scripts/build-better-sqlite3-arm.sh

set -euo pipefail

MOBILE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
PKG_SRC="$MOBILE_DIR/nodejs-assets/nodejs-project/node_modules/better-sqlite3"
PREBUILDS_DIR="$MOBILE_DIR/nodejs-assets/nodejs-project/prebuilds"
GYP="$MOBILE_DIR/nodejs-assets/nodejs-project/node_modules/.bin/nodejs-mobile-gyp"
NODEDIR="$MOBILE_DIR/node_modules/nodejs-mobile-cordova/libs/android/libnode"

NDK="${ANDROID_NDK_HOME:-${ANDROID_NDK_ROOT:-}}"
if [[ -z "$NDK" ]]; then
  SDK="${ANDROID_HOME:-${ANDROID_SDK_ROOT:-}}"
  [[ -n "$SDK" ]] && NDK="$(ls -d "$SDK"/ndk/*/ 2>/dev/null | sort -V | tail -1)"
fi
NDK="${NDK%/}"

if [[ ! -d "$PKG_SRC" ]]; then
  echo "Error: $PKG_SRC not found. Run npm install in nodejs-assets/nodejs-project first." >&2
  exit 1
fi
if [[ -z "$NDK" || ! -d "$NDK" ]]; then
  echo "Error: Android NDK not found. Set ANDROID_NDK_HOME (or ANDROID_HOME with an ndk/ subdir)." >&2
  exit 1
fi
if [[ ! -x "$GYP" ]]; then
  echo "Error: $GYP not found. Run npm install in nodejs-assets/nodejs-project first." >&2
  exit 1
fi

TOOLCHAIN="$NDK/toolchains/llvm/prebuilt/linux-x86_64"
API=24 # matches android/variables.gradle minSdkVersion

# Each ABI's libnode.so ships gzipped; better-sqlite3's binding.gyp (via
# nodejs-mobile's common.gypi) needs the real .so to add it as a NEEDED entry.
for abi in arm64-v8a armeabi-v7a; do
  LIBNODE_DIR="$NODEDIR/bin/$abi"
  if [[ ! -f "$LIBNODE_DIR/libnode.so" && -f "$LIBNODE_DIR/libnode.so.gz" ]]; then
    gunzip -k "$LIBNODE_DIR/libnode.so.gz"
  fi
done

build_one() {
  local abi="$1" gyp_arch="$2" cc="$3" cxx="$4"
  local build_dir="$MOBILE_DIR/build-output/better-sqlite3-$abi"

  echo "── Building better-sqlite3 for $abi ($gyp_arch) ──"
  rm -rf "$build_dir"
  mkdir -p "$build_dir"
  rsync -a --exclude=build --exclude=prebuilds "$PKG_SRC/" "$build_dir/"

  # v8::Object::CreationContext() was removed in newer V8; nodejs-mobile's
  # bundled V8 (Node 12.19) only has the old non-checked accessor. Same patch
  # as fix-better-sqlite3-android.sh.
  sed -i 's/obj->GetCreationContext().ToLocalChecked()/obj->CreationContext()/' \
    "$build_dir/src/util/binder.cpp"

  (
    cd "$build_dir"
    CC="$TOOLCHAIN/bin/$cc" \
    CXX="$TOOLCHAIN/bin/$cxx" \
    AR="$TOOLCHAIN/bin/llvm-ar" \
    GYP_DEFINES="OS=android" \
    "$GYP" configure --target=12.19.0 --arch="$gyp_arch" --nodedir="$NODEDIR"

    CC="$TOOLCHAIN/bin/$cc" \
    CXX="$TOOLCHAIN/bin/$cxx" \
    AR="$TOOLCHAIN/bin/llvm-ar" \
    "$GYP" build
  )

  mkdir -p "$PREBUILDS_DIR/$abi"
  cp "$build_dir/build/Release/better_sqlite3.node" "$PREBUILDS_DIR/$abi/better_sqlite3.node"
  echo "Wrote $PREBUILDS_DIR/$abi/better_sqlite3.node"
}

build_one arm64-v8a   arm64 aarch64-linux-android${API}-clang   aarch64-linux-android${API}-clang++
build_one armeabi-v7a arm   armv7a-linux-androideabi${API}-clang armv7a-linux-androideabi${API}-clang++

echo "Done. Verify with: file $PREBUILDS_DIR/*/better_sqlite3.node"