#!/bin/bash
# Builds uitrace.jar from UiTrace.java. Run after editing the recorder; ui-trace
# also runs this by itself when the jar is missing or older than the source.
set -euo pipefail
cd "$(dirname "$0")"
# The ambient ANDROID_HOME on this machine points at a root-owned SDK that has
# no build-tools under it, so an SDK is only accepted once d8 is confirmed in it.
d8=""
for root in "$HOME/Android/Sdk" "${ANDROID_SDK_ROOT:-}" "${ANDROID_HOME:-}"; do
    [ -n "$root" ] || continue
    found=$(ls -d "$root"/build-tools/*/d8 2>/dev/null | sort -V | tail -1)
    if [ -n "$found" ]; then
        d8=$found
        platform=$(ls -d "$root"/platforms/android-* 2>/dev/null | sort -V | tail -1)
        break
    fi
done
if [ -z "$d8" ] || [ -z "${platform:-}" ]; then
    echo "ui-trace: no Android SDK with both build-tools and a platform" >&2
    exit 1
fi

rm -rf classes && mkdir -p classes
javac --release 17 -Xlint:all -Werror -cp "$platform/android.jar" -d classes UiTrace.java
"$d8" --min-api 30 --output . classes/UiTrace.class
python3 -c 'import zipfile,sys; z=zipfile.ZipFile("uitrace.jar","w",zipfile.ZIP_DEFLATED); z.write("classes.dex"); z.close()'
rm -rf classes classes.dex
echo "built $(pwd)/uitrace.jar"