#!/usr/bin/env bash
# One-shot Crkl testing environment — must leave you with a working blue C overlay.
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
cd "$ROOT"

UNAME_S="$(uname -s)"
if [[ "$UNAME_S" == "Darwin" ]]; then
  BREW_PREFIX="$(brew --prefix 2>/dev/null || echo /opt/homebrew)"
  export JAVA_HOME="${JAVA_HOME:-$BREW_PREFIX/opt/openjdk@17}"
  export ANDROID_HOME="${ANDROID_HOME:-$BREW_PREFIX/share/android-commandlinetools}"
else
  export ANDROID_HOME="${ANDROID_HOME:-$HOME/android-sdk}"
fi
export ANDROID_SDK_ROOT="$ANDROID_HOME"
export PATH="$JAVA_HOME/bin:$ANDROID_HOME/platform-tools:$ANDROID_HOME/emulator:$PATH"
export ANDROID_EMULATOR_WAIT_TIME_BEFORE_KILL="${ANDROID_EMULATOR_WAIT_TIME_BEFORE_KILL:-5}"

ADB="$ANDROID_HOME/platform-tools/adb"
EMU="$ANDROID_HOME/emulator/emulator"
AVD_NAME="${AVD_NAME:-CrklEmulator}"
GPU="${EMULATOR_GPU:-host}"
COMP="com.example.crkl/com.example.crkl.accessibility.CrklAccessibilityService"
LOG="${CRKL_EMU_LOG:-/tmp/crkl-emulator.log}"

echo "== Crkl test-env =="

if [[ ! -x "$ADB" || ! -x "$EMU" ]]; then
  echo "Missing Android SDK tools. Run: make setup-mac"
  exit 1
fi

ensure_emulator() {
  if "$ADB" devices 2>/dev/null | awk '/emulator-.*device/{exit 0} END{exit 1}'; then
    echo "Emulator already up"
    return 0
  fi
  echo "Starting emulator (open gRPC)..."
  "$ADB" emu kill >/dev/null 2>&1 || true
  pkill -f 'qemu-system' >/dev/null 2>&1 || true
  sleep 2
  rm -f "$HOME/.android/avd/${AVD_NAME}.avd"/*.lock 2>/dev/null || true
  if [[ "$UNAME_S" == "Darwin" ]]; then
    chmod +x "$ROOT/scripts/start-emulator-launchd.sh"
    bash "$ROOT/scripts/start-emulator-launchd.sh"
  else
    nohup "$EMU" -avd "$AVD_NAME" -memory 3072 -cores 4 -no-audio \
      -gpu "$GPU" -accel on -no-snapshot-load -no-metrics \
      -grpc 8554 \
      >"$LOG" 2>&1 &
    echo $! > /tmp/crkl-emulator.pid
  fi
  bash "$ROOT/scripts/wait-emulator.sh" "$ADB"
}

enable_on_screen_nav() {
  # Prefer nav bar ON THE PHONE (rim chrome is often dead on macOS QT).
  "$ADB" root >/dev/null 2>&1 || true
  sleep 1
  "$ADB" wait-for-device
  "$ADB" shell settings put secure navigation_mode 0 || true
  "$ADB" shell cmd overlay enable com.android.internal.systemui.navbar.threebutton >/dev/null 2>&1 || true
  "$ADB" shell settings put global force_fsg_nav_bar 0 >/dev/null 2>&1 || true
}

enable_crkl() {
  "$ADB" shell pm grant com.example.crkl android.permission.RECORD_AUDIO || true
  # Disable then enable — avoid empty-string settings (causes "Bad arguments" on some images).
  "$ADB" shell settings put secure accessibility_enabled 0 || true
  sleep 1
  "$ADB" shell settings put secure enabled_accessibility_services "$COMP"
  "$ADB" shell settings put secure accessibility_enabled 1
  sleep 2
}

verify_overlay() {
  local ok=0
  for _ in $(seq 1 15); do
    if "$ADB" logcat -d -s CrklAccessibilityService:D 2>/dev/null | tail -20 | grep -q "Floating button created"; then
      ok=1
      break
    fi
    sleep 1
  done
  if [[ "$ok" -ne 1 ]]; then
    echo "WARNING: did not see 'Floating button created' in logcat yet — check Accessibility in Settings."
  else
    echo "✓ Crkl overlay service connected (blue C should be visible)"
  fi
  echo "a11y=$("$ADB" shell settings get secure enabled_accessibility_services | tr -d '\r')"
}

ensure_emulator
echo "== build + install =="
./gradlew assembleDebug --console=plain -q
"$ADB" install -r app/build/outputs/apk/debug/app-debug.apk

echo "== on-screen nav + Crkl permissions =="
enable_on_screen_nav
enable_crkl

echo "== open fixtures =="
"$ADB" shell am force-stop com.example.crkl >/dev/null 2>&1 || true
"$ADB" shell am start -n com.example.crkl/.fixtures.TestFixturesActivity >/dev/null
sleep 1
# Re-assert a11y after force-stop (some builds drop it)
enable_crkl
verify_overlay

"$ADB" shell am start -n com.example.crkl/.fixtures.TestFixturesActivity >/dev/null

echo ""
echo "✓ Ready. Look at the emulator phone screen:"
echo "  • Blue floating C (bottom-right) = Crkl"
echo "  • Bottom on-screen ◀ ○ □ = Android nav (use these; rim chrome often dead)"
echo ""
echo "Try now:"
echo "  1. Tap blue C"
echo "  2. Circle the email card"
echo "  3. Tap red EXIT"
echo "  4. For OCR: circle the OCR-HELLO-42 block"
echo "  5. For STT: after a result, tap Speak"
echo ""