restore: add restore.sh script to restore mongo backups by timestamp

restore.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Usage: ./restore.sh <timestamp>
+# Example: ./restore.sh 2025-08-24-14-30
+
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <timestamp>"
+  echo "Example: $0 2025-08-24-14-30"
+  echo ""
+  echo "Available backups:"
+  ls -1t backups/mongo-volume-backup-*.tar.gz 2>/dev/null | sed 's/.*mongo-volume-backup-\(.*\)\.tar\.gz/  \1/' || echo "  No backups found"
+  exit 1
+fi
+
+TIMESTAMP="$1"
+BACKUP_DIR="${BACKUP_DIR:-backups}"
+BACKUP_FILE="$BACKUP_DIR/mongo-volume-backup-$TIMESTAMP.tar.gz"
+
+# Check if backup file exists
+if [ ! -f "$BACKUP_FILE" ]; then
+  echo "Error: Backup file '$BACKUP_FILE' not found"
+  echo ""
+  echo "Available backups:"
+  ls -1t "$BACKUP_DIR"/mongo-volume-backup-*.tar.gz 2>/dev/null | sed 's/.*mongo-volume-backup-\(.*\)\.tar\.gz/  \1/' || echo "  No backups found"
+  exit 1
+fi
+
+echo "Restoring from backup: $BACKUP_FILE"
+echo "WARNING: This will replace the current mongo-volume data!"
+read -p "Are you sure you want to continue? (y/N): " -n 1 -r
+echo
+if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+  echo "Restore cancelled"
+  exit 0
+fi
+
+# Scale down mongo service
+echo "Scaling down mongo service..."
+docker service scale utility-bills-tracker_mongo=0
+
+# Backup current volume (just in case)
+SAFETY_BACKUP="mongo-volume-pre-restore-$(date +%Y-%m-%d-%H-%M).tar.gz"
+echo "Creating safety backup: $SAFETY_BACKUP"
+sudo tar -czf "$SAFETY_BACKUP" mongo-volume 2>/dev/null || true
+
+# Remove current volume
+echo "Removing current mongo-volume..."
+sudo rm -rf mongo-volume
+
+# Extract backup
+echo "Extracting backup..."
+sudo tar -xzf "$BACKUP_FILE"
+
+# Set proper permissions
+echo "Setting permissions..."
+sudo chown -R 999:999 mongo-volume
+
+# Scale mongo service back up
+echo "Scaling mongo service back up..."
+docker service scale utility-bills-tracker_mongo=1
+
+echo "Restore completed successfully!"
+echo "Safety backup saved as: $SAFETY_BACKUP"