#!/bin/bash
set -eo pipefail

# WebsiteBox Manual Backup Script
# Usage: ./scripts/backup.sh [--prune-only]

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
BACKUP_DIR="${PROJECT_DIR}/websitebox-data/backups"

# Load .env
if [ -f "${PROJECT_DIR}/.env" ]; then
    # shellcheck disable=SC1091
    source "${PROJECT_DIR}/.env"
fi

RETENTION_DAYS="${BACKUP_RETENTION_DAYS:-30}"

prune_old_backups() {
    echo "Pruning backups older than ${RETENTION_DAYS} days..."
    if [ -d "${BACKUP_DIR}" ]; then
        find "${BACKUP_DIR}" -type f -mtime "+${RETENTION_DAYS}" -delete 2>/dev/null || true
        echo "Pruning complete."
    else
        echo "Backup directory does not exist: ${BACKUP_DIR}"
    fi
}

if [ "$1" = "--prune-only" ]; then
    prune_old_backups
    exit 0
fi

echo "═══════════════════════════════════════════════════════════"
echo " WebsiteBox Manual Backup"
echo "═══════════════════════════════════════════════════════════"

# Check that containers are running
if ! docker compose -f "${PROJECT_DIR}/docker-compose.yml" ps --status running | grep -q websitebox-wordpress; then
    echo "ERROR: WordPress container is not running."
    echo "Start it with: docker compose up -d"
    exit 1
fi

# Create database dump
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
echo "Creating database backup..."
docker compose -f "${PROJECT_DIR}/docker-compose.yml" exec -T db \
    mariadb-dump -u"${DB_USER:-websitebox}" -p"${DB_PASSWORD}" "${DB_NAME:-websitebox}" \
    > "${BACKUP_DIR}/db_${TIMESTAMP}.sql"

echo "Database backup saved: websitebox-data/backups/db_${TIMESTAMP}.sql"

# Create files backup
echo "Creating files backup..."
tar czf "${BACKUP_DIR}/files_${TIMESTAMP}.tar.gz" \
    -C "${PROJECT_DIR}/websitebox-data" \
    --exclude='backups' \
    --exclude='database' \
    wordpress/ certs/

echo "Files backup saved: websitebox-data/backups/files_${TIMESTAMP}.tar.gz"

# Prune old backups
prune_old_backups

echo ""
echo "Backup complete!"
echo "Files stored in: websitebox-data/backups/"