#!/bin/sh
set -eu

ROOT=$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)
ANDROID_ENV="$ROOT/.env"
TEST_ENV="$ROOT/.env.android-test"
run_id=$(date -u +%Y%m%d%H%M%S)-$$
image="who-need-help-android:instrumentation-$run_id"
container="who-need-help-android-instrumentation-$run_id"
output="$ROOT/output/android-instrumentation/$run_id"
geo_pid=""

if [ ! -e /dev/kvm ]; then
  echo "/dev/kvm is required for the containerized Android emulator." >&2
  exit 1
fi

if [ ! -f "$ANDROID_ENV" ]; then
  echo "Missing $ANDROID_ENV. Copy .env.example to .env and configure Android timings." >&2
  exit 1
fi

"$ROOT/scripts/ensure-local-android-test-env.sh"

set -a
. "$ANDROID_ENV"
. "$TEST_ENV"
set +a

: "${WNH_ANDROID_TEST_BASE_URL:?Set WNH_ANDROID_TEST_BASE_URL in .env.android-test}"
: "${WNH_TRACKING_MIN_TIME_MS:?Set WNH_TRACKING_MIN_TIME_MS in .env}"
: "${WNH_TRACKING_HTTP_TIMEOUT_MS:?Set WNH_TRACKING_HTTP_TIMEOUT_MS in .env}"

android_test_port=${WNH_ANDROID_TEST_BASE_URL#http://127.0.0.1:}

if [ "$android_test_port" = "$WNH_ANDROID_TEST_BASE_URL" ]; then
  echo "WNH_ANDROID_TEST_BASE_URL must be an http://127.0.0.1:PORT origin." >&2
  exit 1
fi

case "$android_test_port" in
  ""|*[!0-9]*)
    echo "WNH_ANDROID_TEST_BASE_URL must contain only a numeric port." >&2
    exit 1
    ;;
esac

if [ "$android_test_port" -lt 1 ] || [ "$android_test_port" -gt 65535 ]; then
  echo "WNH_ANDROID_TEST_BASE_URL port must be between 1 and 65535." >&2
  exit 1
fi

mkdir -p "$output"

cleanup() {
  status=$?

  if [ -n "$geo_pid" ]; then
    kill "$geo_pid" >/dev/null 2>&1 || true
    wait "$geo_pid" >/dev/null 2>&1 || true
  fi

  if [ "$status" -ne 0 ] && docker inspect "$container" >/dev/null 2>&1; then
    docker exec "$container" adb logcat -d > "$output/logcat.txt" 2>&1 || true
    docker exec "$container" adb shell dumpsys activity services \
      org.whoneedhelp.mobile.debug > "$output/services.txt" 2>&1 || true
    docker logs "$container" > "$output/emulator.log" 2>&1 || true
  fi

  docker rm -f "$container" >/dev/null 2>&1 || true
  docker image rm "$image" >/dev/null 2>&1 || true
  exit "$status"
}

trap cleanup EXIT HUP INT TERM

docker build \
  --build-arg "WNH_DEBUG_BASE_URL=$WNH_ANDROID_TEST_BASE_URL" \
  --build-arg "WNH_TRACKING_MIN_TIME_MS=$WNH_TRACKING_MIN_TIME_MS" \
  --build-arg "WNH_TRACKING_HTTP_TIMEOUT_MS=$WNH_TRACKING_HTTP_TIMEOUT_MS" \
  --target emulator \
  -t "$image" \
  "$ROOT/android"

docker run -d \
  --name "$container" \
  --device /dev/kvm \
  --network none \
  "$image" > "$output/container-id.txt"

docker exec "$container" adb wait-for-device

booted=""
attempt=0
while [ "$attempt" -lt 90 ]; do
  booted=$(docker exec "$container" adb shell getprop sys.boot_completed 2>/dev/null \
    | tr -d '\r')

  if [ "$booted" = "1" ]; then
    break
  fi

  attempt=$((attempt + 1))
  sleep 2
done

if [ "$booted" != "1" ]; then
  echo "Android emulator did not finish booting." >&2
  exit 1
fi

docker exec "$container" adb shell input keyevent 82
docker exec "$container" adb shell settings put global window_animation_scale 0
docker exec "$container" adb shell settings put global transition_animation_scale 0
docker exec "$container" adb shell settings put global animator_duration_scale 0
docker exec "$container" adb shell cmd location set-location-enabled true
docker exec "$container" adb emu geo fix -122.084000 37.422000
docker exec "$container" adb install -r \
  /opt/who-need-help/who-need-help-debug.apk
docker exec "$container" adb install -r \
  /opt/who-need-help/who-need-help-debug-androidTest.apk

docker exec "$container" adb shell pm list instrumentation \
  > "$output/instrumentation.txt"

(
  while docker inspect "$container" >/dev/null 2>&1; do
    docker exec "$container" adb emu geo fix -122.084000 37.422000 \
      >/dev/null 2>&1 || true
    sleep 2
  done
) &
geo_pid=$!

set +e
docker exec "$container" adb shell am instrument -w -r \
  org.whoneedhelp.mobile.debug.test/androidx.test.runner.AndroidJUnitRunner \
  > "$output/results.txt" 2>&1
instrumentation_status=$?
set -e
cat "$output/results.txt"

if [ "$instrumentation_status" -ne 0 ] \
  || ! grep -Eq '^OK \([0-9]+ tests?\)$' "$output/results.txt" \
  || grep -Eq 'FAILURES!!!|INSTRUMENTATION_FAILED|Process crashed' "$output/results.txt"; then
  echo "Android instrumentation failed; diagnostics are retained in $output." >&2
  exit 1
fi

echo "Android instrumentation passed. Evidence: $output"