#!/usr/bin/env bash
set -euo pipefail

# Cross-platform helper for Unix-like shells
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

echo "Preparing Android assets and native libs..."

if command -v npm >/dev/null 2>&1; then
  echo "Running npm install & build"
  npm install
  npm run build || true
fi

DIST_DIR="dist"
if [ ! -d "$DIST_DIR" ]; then DIST_DIR="build"; fi
if [ -d "$DIST_DIR" ]; then
  echo "Copying $DIST_DIR -> android/app/src/main/assets"
  mkdir -p android/app/src/main/assets
  rsync -a --delete "$DIST_DIR/" android/app/src/main/assets/
else
  echo "No dist/build found, copying src/ -> android assets"
  mkdir -p android/app/src/main/assets
  rsync -a --delete src/ android/app/src/main/assets/
fi

if command -v cargo-ndk >/dev/null 2>&1; then
  echo "Building native libs with cargo-ndk"
  cargo-ndk -t aarch64 -t armv7 build --release || true
  # copy so files
  find target -type f -name "*.so" | while read -r f; do
    if [[ "$f" =~ aarch64|aarch64-linux-android ]]; then abi=arm64-v8a; fi
    if [[ "$f" =~ armv7|armv7-linux-androideabi ]]; then abi=armeabi-v7a; fi
    if [ -n "${abi-}" ]; then
      mkdir -p android/app/src/main/jniLibs/$abi
      cp "$f" android/app/src/main/jniLibs/$abi/
      echo "Copied $f -> android/app/src/main/jniLibs/$abi/"
    fi
  done
else
  echo "cargo-ndk not found; skipping native lib build"
fi

echo "Prepared Android project. Open android/ in Android Studio to build the APK (or run ./gradlew assembleDebug)."