#!/bin/bash

# stop on error
set -e

DATE=$(date +"%Y-%m-%d")
BACKUP_NAME="${DATE}.tar.gz"

# dir of this script that will also work when called from elsewhere
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$DIR" || exit 1

# load .env variables
if [ -f "$DIR/.env" ]; then
  export $(grep -v '^#' "$DIR/.env" | xargs)
fi

# --- PREPARE ---
mkdir -p "${DIR}/backups"

echo "Creating DB dump..."
docker compose exec db mariadb-dump --no-tablespaces -u"$MYSQL_USER" -p"$MYSQL_PASSWORD" "$MYSQL_DATABASE" > "db_dump_${DATE}.sql"

echo "Creating tar.gz archive..."
tar -czf "${DIR}/backups/${BACKUP_NAME}" --exclude='db' --exclude='.git' --exclude='static' --exclude='backups' --exclude='db_import' "." "db_dump_${DATE}.sql"

echo "Cleaning up temp SQL dump..."
rm "db_dump_${DATE}.sql"

echo "Cleaning up local backups older than 7 days..."
find "${DIR}/backups" -name "*.tar.gz" -type f -mtime +7 -delete

echo "✅ Backup complete: ${DIR}/backups/${BACKUP_NAME}"