#!/usr/bin/env bash
# Keep the served companion APK in sync with main on every push.
#
# When a push to main includes Android changes, rebuild the APK, refresh
# neode-ui/public/packages/archipelago-companion.apk, commit it, and ask
# you to push again (so the refreshed APK rides along in the same push).
#
# Enable once per clone:  git config core.hooksPath .githooks
set -euo pipefail

ROOT="$(git rev-parse --show-toplevel)"
cd "$ROOT"

# ship-companion.sh already (re)published the APK for this push — don't redo it.
[ -n "${SHIP_COMPANION:-}" ] && exit 0

PUSH_MAIN=0; RANGE_OLD=""; RANGE_NEW=""
while read -r _local_ref local_sha remote_ref remote_sha; do
  if [ "${remote_ref##*/}" = "main" ]; then
    PUSH_MAIN=1; RANGE_OLD="$remote_sha"; RANGE_NEW="$local_sha"
  fi
done
[ "$PUSH_MAIN" = "1" ] || exit 0

# Loop-break: if the tip is already the auto APK commit, let the push proceed.
case "$(git log -1 --pretty=%s)" in
  *"companion APK"*) exit 0 ;;
esac

# Only rebuild when this push actually touches the Android app.
ZEROS="0000000000000000000000000000000000000000"
if [ -z "$RANGE_OLD" ] || [ "$RANGE_OLD" = "$ZEROS" ]; then
  ANDROID_CHANGED=1
elif git diff --quiet "$RANGE_OLD" "$RANGE_NEW" -- Android/ 2>/dev/null; then
  ANDROID_CHANGED=0
else
  ANDROID_CHANGED=1
fi
[ "$ANDROID_CHANGED" = "1" ] || exit 0

bash scripts/publish-companion-apk.sh || exit 0

DEST="neode-ui/public/packages/archipelago-companion.apk"
if git diff --cached --quiet -- "$DEST"; then
  exit 0   # APK unchanged — nothing to do
fi

git commit -q -m "chore(android): update companion APK download [skip ci]"
echo "" >&2
echo "▶ Companion APK rebuilt and committed. Run your push again to include it." >&2
exit 1