#!/usr/bin/env bash
# One-step API update.
#
# Master (deploy/replicas.env present): pull, install, ship DDL to replicas,
# generate, build, restart. Schema is applied on subscribers before the publisher
# migrates, then subscriptions are refreshed with copy_data=false.
#
# Replica (no replicas.env): pull, install, generate, build, restart.
# Does not migrate and does not touch the subscription.
#
# Never calls sync-replica-data.sh. That repair disables subscriptions and
# leaves the replication origin behind, so the apply worker dies on replay.
#
# Usage (inside the API directory, or from anywhere):
#   bash deploy/update.sh            # master if replicas.env exists, else replica
#   bash deploy/update.sh --master
#   bash deploy/update.sh --replica
#   PM2_APP=superadmin-api bash deploy/update.sh
set -euo pipefail

API_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$API_DIR"

MODE="${1:-auto}"
case "$MODE" in
  auto|--master|--replica) ;;
  *)
    echo "Usage: $0 [--master|--replica]" >&2
    exit 1
    ;;
esac

if [[ "$MODE" == auto ]]; then
  if [[ -f "$API_DIR/deploy/replicas.env" ]]; then
    MODE=--master
  else
    MODE=--replica
  fi
fi

if [[ "$MODE" == --master && ! -f "$API_DIR/deploy/replicas.env" ]]; then
  echo "deploy/replicas.env is missing, so this host is not the publisher." >&2
  exit 1
fi

APP="${PM2_APP:-superadmin-api}"
echo "== update $MODE  app=$APP  dir=$API_DIR"

git pull --ff-only
npm ci

if [[ "$MODE" == --master ]]; then
  bash "$API_DIR/deploy/sync-replica-schema.sh"
fi

npx prisma generate
npm run build

restart_pm2() {
  if pm2 describe "$APP" >/dev/null 2>&1; then
    pm2 restart "$APP"
    return
  fi
  local user
  for user in montime ubuntu; do
    if id "$user" >/dev/null 2>&1 && sudo -u "$user" pm2 describe "$APP" >/dev/null 2>&1; then
      sudo -u "$user" pm2 restart "$APP"
      return
    fi
  done
  echo "pm2 process '$APP' not found. Set PM2_APP to the name from: pm2 list" >&2
  pm2 list || true
  exit 1
}

restart_pm2
echo "== update done ($MODE)"