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

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
ANDROID_DIR="$ROOT/apps/android"
OUTPUT_DIR="$ANDROID_DIR/dist"
KEYSTORE_FILE="$ANDROID_DIR/.factory-release.keystore"
KEYSTORE_PROPS="$ANDROID_DIR/keystore.properties"

mkdir -p "$OUTPUT_DIR"

if [[ ! -f "$KEYSTORE_PROPS" ]]; then
  if [[ ! -f "$KEYSTORE_FILE" ]]; then
    echo "Generating factory release keystore at $KEYSTORE_FILE"
  keytool -genkeypair \
      -alias ladill-frontdesk-kiosk \
      -keyalg RSA \
      -keysize 4096 \
      -validity 10000 \
      -keystore "$KEYSTORE_FILE" \
      -storepass "change-me-before-production" \
      -keypass "change-me-before-production" \
      -dname "CN=Ladill Frontdesk Kiosk, OU=Hardware, O=Forty8Tech, L=Accra, ST=Greater Accra, C=GH"
  fi

  cp "$ANDROID_DIR/keystore.properties.example" "$KEYSTORE_PROPS"
fi

if [[ -z "${ANDROID_HOME:-}" && -d "$HOME/Library/Android/sdk" ]]; then
  export ANDROID_HOME="$HOME/Library/Android/sdk"
fi

if [[ -z "${JAVA_HOME:-}" ]]; then
  if /usr/libexec/java_home -v 17 >/dev/null 2>&1; then
    export JAVA_HOME="$(/usr/libexec/java_home -v 17)"
  fi
fi

cd "$ANDROID_DIR"
./gradlew --no-daemon clean assembleRelease

APK_SRC="$ANDROID_DIR/app/build/outputs/apk/release/app-release.apk"
APK_DEST="$OUTPUT_DIR/ladill-frontdesk-kiosk-$(grep versionName app/build.gradle.kts | head -1 | sed -E 's/.*"([^"]+)".*/\1/').apk"

cp "$APK_SRC" "$APK_DEST"

echo ""
echo "Built release APK:"
echo "  $APK_DEST"
echo ""
echo "Package: com.ladill.frontdesk.kiosk"
echo "Factory admin PIN: 462834 (change from kiosk admin after provisioning)"
echo ""
echo "See docs/KIOSK-MANUFACTURER-FLASH.md for full OEM flash instructions."