#!/bin/bash
# Roll back the production deployment to the previous release.
set -euo pipefail

DEPLOY_HOST="prod.nexus.local"
PREVIOUS=$(ssh deploy@"$DEPLOY_HOST" "ls -1dt /opt/releases/*/ | sed -n '2p'")

if [ -z "$PREVIOUS" ]; then
    echo "[rollback] No previous release found." >&2
    exit 1
fi

echo "[rollback] Rolling back to: $PREVIOUS"
ssh deploy@"$DEPLOY_HOST" "ln -sfn '$PREVIOUS' /opt/app && systemctl restart nexus-app"
echo "[rollback] Done."