#!/bin/sh
set -eu
archive=$1
app=/var/www/meweb.arasaka.software
backups=/var/backups/meweb.arasaka.software
health=http://127.0.0.1:5480/api/info
stamp=$(date -u +%Y%m%d%H%M%S)
stage=$(mktemp -d)
trap 'rm -rf "$stage"' EXIT

tar -xzf "$archive" -C "$stage"
test -x "$stage/MeWeb.Server"

snapshot=""
if [ -x "$app/MeWeb.Server" ]; then
  snapshot="$backups/meweb-$stamp"
  rsync -a "$app/" "$snapshot/"
  ls -1dt "$backups"/meweb-* 2>/dev/null | tail -n +4 | xargs -r rm -rf
fi

sudo systemctl stop meweb || true
rsync -a --delete "$stage/" "$app/"
sudo systemctl start meweb

for attempt in $(seq 1 30); do
  if curl -fsS "$health" | grep -q "\"commit\":\"$COMMIT\""; then
    echo "deployed $COMMIT: $(curl -fsS "$health")"
    exit 0
  fi
  sleep 1
done

echo "::error::the new server did not answer with commit $COMMIT"
sudo systemctl status meweb --no-pager | tail -20 || true
if [ -n "$snapshot" ]; then
  sudo systemctl stop meweb || true
  rsync -a --delete "$snapshot/" "$app/"
  sudo systemctl start meweb
  echo "rolled back to $snapshot"
fi
exit 1