#!/usr/bin/env bash
# scripts/backup.sh — backup quotidien Postgres + files (a appeler par cron)
set -euo pipefail

DATE=$(date +%Y%m%d-%H%M%S)
BACKUP_DIR="${BACKUP_DIR:-/opt/formation-hub/backups/local}"
COMPOSE_FILES="${COMPOSE_FILES:--f compose.yml -f compose.prod.yml}"
RETENTION_DAYS="${RETENTION_DAYS:-30}"

mkdir -p "$BACKUP_DIR"

echo "[$(date -Iseconds)] Backup start — DATE=$DATE"

cd "$(dirname "$0")/.."

echo "  Postgres docmost..."
docker compose $COMPOSE_FILES exec -T docmost-db \
  pg_dump -U docmost docmost | gzip > "$BACKUP_DIR/docmost-db-$DATE.sql.gz"

echo "  Baserow data..."
docker compose $COMPOSE_FILES exec -T baserow \
  tar czf - /baserow/data > "$BACKUP_DIR/baserow-data-$DATE.tar.gz"

echo "  Docmost files..."
docker compose $COMPOSE_FILES exec -T docmost \
  tar czf - /app/data/storage > "$BACKUP_DIR/docmost-files-$DATE.tar.gz"

echo "  Sync distant (rclone) — si configure..."
if command -v rclone >/dev/null 2>&1 && [ -n "${RCLONE_REMOTE:-}" ]; then
  rclone copy "$BACKUP_DIR/" "$RCLONE_REMOTE:" --include "*-$DATE.*"
else
  echo "  (rclone non configure — backup distant skip)"
fi

echo "  Cleanup local > ${RETENTION_DAYS}j..."
find "$BACKUP_DIR" -type f -mtime "+$RETENTION_DAYS" -delete

echo "[$(date -Iseconds)] Backup OK"
ls -lh "$BACKUP_DIR/"*-$DATE.*