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

cd "$(dirname "$0")/.."
command -v uv >/dev/null || { echo "uv is required" >&2; exit 1; }

BRIDGE_ANDROID_DIR="native/android/flet_vpn_bridge/src/flutter/vpn_native_bridge/android"
mkdir -p "$BRIDGE_ANDROID_DIR/libs"
# Remove artifacts from older builds that used the unsupported direct-AAR
# dependency path. The reviewed source artifacts remain under native/android.
rm -f "$BRIDGE_ANDROID_DIR/libs/freeturn.aar" "$BRIDGE_ANDROID_DIR/libs/libbox.aar"
JNI_DIR="$BRIDGE_ANDROID_DIR/src/main/jniLibs"
rm -rf "$JNI_DIR"
mkdir -p "$JNI_DIR"

# A Flutter/Flet extension is itself built as an Android AAR. Gradle rejects
# direct local .aar dependencies in that situation, so unpack only the AAR's
# classes.jar and native libraries into the extension. The resulting plugin
# AAR carries the same reviewed engine payload into the final APK.
prepare_engine_artifact() {
  local artifact="$1"
  local stem="${artifact%.aar}"
  local source="native/android/libs/$artifact"
  local jar_target="$BRIDGE_ANDROID_DIR/libs/${stem}-classes.jar"

  rm -f "$jar_target"
  if [[ -f "$source" ]]; then
    unzip -p "$source" classes.jar > "$jar_target"
    local unpack_dir
    unpack_dir="$(mktemp -d)"
    unzip -q "$source" 'jni/*' -d "$unpack_dir"
    if [[ -d "$unpack_dir/jni" ]]; then
      cp -R "$unpack_dir/jni/." "$JNI_DIR/"
    fi
    rm -rf "$unpack_dir"
  fi
}

for artifact in freeturn.aar libbox.aar; do
  prepare_engine_artifact "$artifact"
done

if [[ ! -f native/android/libs/freeturn.aar || ! -f native/android/libs/libbox.aar ]]; then
  cat >&2 <<'EOF'
Warning: one or more native engine artifacts are missing.
The APK will build, but the affected runtime reports UNSUPPORTED and cannot connect.
For a release build set REQUIRE_NATIVE_ARTIFACTS=1 after placing reviewed, pinned files at:
  native/android/libs/freeturn.aar
  native/android/libs/libbox.aar
EOF
  if [[ "${REQUIRE_NATIVE_ARTIFACTS:-0}" == "1" ]]; then
    exit 2
  fi
fi

uv run flet build apk --project vpn-app --org su.snw --artifact vpn-app-arm64 --arch arm64-v8a