#!/usr/bin/env bash
# Repeatable on-device smoke test for the ARM32-in-ARM64 prototype (see
# /ARM64_TRANSLATION_LAYER.md). Replaces the manual adb-shell archaeology
# this project's live debugging sessions have needed up to now: install,
# launch, watch logcat for a bounded window, then report the same signals
# those sessions kept hand-checking - onCreate timing, MEM FAULT count (see
# guest_engine.cpp's mem_fault_hook_cb), and process-death cause (ANR / OOM /
# MIUI SwipeUpClean / other) - as one command, so every future interface-
# layer change gets checked against the same baseline instead of a fresh
# investigation each time.
#
# Usage: mpcore/scripts/test_on_device.sh [device-serial] [watch-seconds]
#   device-serial defaults to the first device `adb devices` lists.
#   watch-seconds defaults to 180 (most observed onCreate runs finish in
#   100-120s; this leaves headroom to also see the post-onCreate lifecycle
#   calls that previously kept faulting).
set -uo pipefail
# Script lives at mpcore/scripts/ - project root (where app/ and mpcore/ are
# siblings) is two levels up.
cd "$(dirname "$0")/../.."

PKG="com.ea.games.nfs13_arm"
ACTIVITY="com.ea.ironmonkey.GameActivityMain"
# "translated" (the emulated arm64-v8a path) - see app/build.gradle.kts's
# product flavors, added for the native ARM32 tracing investigation
# (ARM64_TRANSLATION_LAYER.md). The pre-flavor-split path
# (app/build/outputs/apk/debug/app-debug.apk) is now a STALE, never-updated
# file left over from before that split - silently reinstalling it here
# instead of the real current build wasted real debugging time confirming
# this fix, so this path is now the single source of truth.
APK="app/build/outputs/apk/translated/debug/app-translated-debug.apk"

SERIAL="${1:-$(adb devices | awk 'NR==2{print $1}')}"
WATCH_SECONDS="${2:-180}"

if [[ -z "$SERIAL" ]]; then
    echo "No adb device found. Connect the device and retry." >&2
    exit 1
fi
ADB="adb -s $SERIAL"

if [[ ! -f "$APK" ]]; then
    echo "APK not found at $APK - build it first (./gradlew :app:assembleDebug)." >&2
    exit 1
fi

echo "== Installing $APK on $SERIAL =="
$ADB install -r "$APK" || { echo "install failed" >&2; exit 1; }

echo "== Launching =="
$ADB shell am force-stop "$PKG"
$ADB logcat -c
$ADB shell monkey -p "$PKG" -c android.intent.category.LAUNCHER 1 >/dev/null

sleep 2
PID=$($ADB shell pidof "$PKG" | tr -d '\r')
if [[ -z "$PID" ]]; then
    echo "Process did not start." >&2
    exit 1
fi
echo "pid=$PID"

echo "== Watching logcat for ${WATCH_SECONDS}s =="
LOG="$(mktemp)"
timeout "${WATCH_SECONDS}s" $ADB logcat --pid="$PID" > "$LOG" 2>/dev/null || true

echo ""
echo "===================== RESULTS ====================="

ONCREATE_LINE=$(grep "GameActivityMain onCreate took" "$LOG" | tail -1)
if [[ -n "$ONCREATE_LINE" ]]; then
    echo "onCreate: $(echo "$ONCREATE_LINE" | grep -oE '[0-9]+ms')"
else
    echo "onCreate: did not complete within ${WATCH_SECONDS}s"
fi

FAULT_COUNT=$(grep -c "MEM FAULT" "$LOG" || true)
echo "MEM FAULT lines: $FAULT_COUNT"
if [[ "$FAULT_COUNT" -gt 0 ]]; then
    echo "  first: $(grep "MEM FAULT" "$LOG" | head -1)"
    echo "  last:  $(grep "MEM FAULT" "$LOG" | tail -1)"
fi

CRASHED_LINE=$(grep -c "refusing to run - engine already crashed" "$LOG" || true)
echo "engine crashed (fail-fast tripped): $([[ "$CRASHED_LINE" -gt 0 ]] && echo yes || echo no)"

STILL_ALIVE=$($ADB shell "pidof $PKG" | tr -d '\r')
if [[ -n "$STILL_ALIVE" ]]; then
    echo "process status: alive (pid=$STILL_ALIVE) at end of watch window"
else
    echo "process status: DEAD"
    DEATH_LINE=$($ADB logcat -d 2>/dev/null | grep -E "Killing $PID:|$PID.*died->background" | tail -3)
    if [[ -n "$DEATH_LINE" ]]; then
        echo "  cause:"
        echo "$DEATH_LINE" | sed 's/^/    /'
    else
        echo "  cause: unknown (no ActivityManager kill/death line found - check for a FATAL crash instead)"
        $ADB logcat -d --pid="$PID" 2>/dev/null | grep -iE "FATAL|AndroidRuntime" | sed 's/^/    /'
    fi
fi

echo "====================================================="
echo "Full log: $LOG"