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

# Apply a versioned upgrade on production-like environments.
# Usage:
#   scripts/ops/netgescon-upgrade-apply.sh --tag v1.3.0 --app-dir /var/www/netgescon

TAG=""
APP_DIR="/var/www/netgescon"
BACKUP_DIR="/var/backups/netgescon"
RUN_MIGRATIONS="yes"

while [[ $# -gt 0 ]]; do
  case "$1" in
    --tag)
      TAG="$2"
      shift 2
      ;;
    --app-dir)
      APP_DIR="$2"
      shift 2
      ;;
    --backup-dir)
      BACKUP_DIR="$2"
      shift 2
      ;;
    --skip-migrations)
      RUN_MIGRATIONS="no"
      shift 1
      ;;
    *)
      echo "Unknown option: $1"
      exit 1
      ;;
  esac
done

if [[ -z "$TAG" ]]; then
  echo "Usage: $0 --tag <version-tag> [--app-dir /var/www/netgescon] [--backup-dir /var/backups/netgescon] [--skip-migrations]"
  exit 1
fi

STAMP="$(date +"%Y%m%d-%H%M%S")"
mkdir -p "$BACKUP_DIR"

pushd "$APP_DIR" >/dev/null

if [[ ! -f artisan ]]; then
  echo "Error: '$APP_DIR' is not a Laravel app (artisan not found)."
  exit 1
fi

# Load DB settings from .env for local mysqldump backup.
if [[ -f .env ]]; then
  # shellcheck disable=SC1091
  set -a
  source .env
  set +a
fi

DB_HOST="${DB_HOST:-127.0.0.1}"
DB_PORT="${DB_PORT:-3306}"
DB_DATABASE="${DB_DATABASE:-}"
DB_USERNAME="${DB_USERNAME:-}"
DB_PASSWORD="${DB_PASSWORD:-}"

if [[ -n "$DB_DATABASE" && -n "$DB_USERNAME" ]]; then
  echo "Creating DB backup..."
  MYSQL_PWD="$DB_PASSWORD" mysqldump \
    --host="$DB_HOST" \
    --port="$DB_PORT" \
    --user="$DB_USERNAME" \
    --single-transaction \
    --routines \
    --triggers \
    "$DB_DATABASE" > "$BACKUP_DIR/db-${STAMP}.sql"
fi

# Backup mutable app data.
echo "Creating storage and env backup..."
tar -czf "$BACKUP_DIR/app-${STAMP}.tar.gz" storage .env

echo "Updating code to tag $TAG..."
git fetch --tags origin

git checkout "$TAG"

composer install --no-dev --optimize-autoloader

if [[ "$RUN_MIGRATIONS" == "yes" ]]; then
  php artisan migrate --force
fi

php artisan optimize:clear
php artisan optimize

popd >/dev/null

echo "Upgrade completed successfully on tag $TAG"
echo "Backups saved in $BACKUP_DIR"