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

# Backup database + storage to Google Drive via rclone.
# Prerequisites:
#   1) rclone installed
#   2) remote configured, e.g. 'gdrive'
# Usage:
#   scripts/ops/netgescon-backup-gdrive.sh --app-dir /var/www/netgescon --remote gdrive:NetGesconBackups/prod

APP_DIR="/var/www/netgescon"
REMOTE_PATH="gdrive:NetGesconBackups/prod"
TMP_DIR="/tmp/netgescon-backup"

while [[ $# -gt 0 ]]; do
  case "$1" in
    --app-dir)
      APP_DIR="$2"
      shift 2
      ;;
    --remote)
      REMOTE_PATH="$2"
      shift 2
      ;;
    --tmp-dir)
      TMP_DIR="$2"
      shift 2
      ;;
    *)
      echo "Unknown option: $1"
      exit 1
      ;;
  esac
done

mkdir -p "$TMP_DIR"
STAMP="$(date +"%Y%m%d-%H%M%S")"
WORK_DIR="$TMP_DIR/$STAMP"
mkdir -p "$WORK_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

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
  MYSQL_PWD="$DB_PASSWORD" mysqldump \
    --host="$DB_HOST" \
    --port="$DB_PORT" \
    --user="$DB_USERNAME" \
    --single-transaction \
    --routines \
    --triggers \
    "$DB_DATABASE" > "$WORK_DIR/db.sql"
fi

tar -czf "$WORK_DIR/storage.tar.gz" storage
cp .env "$WORK_DIR/.env.backup"

popd >/dev/null

ARCHIVE="$TMP_DIR/netgescon-backup-$STAMP.tar.gz"
tar -czf "$ARCHIVE" -C "$WORK_DIR" .

rclone copy "$ARCHIVE" "$REMOTE_PATH" --progress

echo "Backup uploaded to $REMOTE_PATH"
echo "Local archive: $ARCHIVE"