#!/usr/bin/env bash
# Wrapper that starts the Python research engine, but no-ops if a healthy
# instance is already serving on the target port. The Replit workflow
# manager occasionally double-starts the dev workflow after a restart;
# without this guard the second instance dies on EADDRINUSE and the
# workflow status flips to FAILED even though the engine is fine.
set -euo pipefail

PORT="${PORT:-8011}"
HEALTH_URL="http://127.0.0.1:${PORT}/internal/healthz"

if curl -fsS --max-time 2 "${HEALTH_URL}" >/dev/null 2>&1; then
  echo "research-engine: healthy instance already on :${PORT}, skipping start" >&2
  # Block forever so the workflow stays in RUNNING; otherwise Replit
  # treats the immediate exit as a crash and restarts again.
  exec sleep infinity
fi

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "${REPO_ROOT}/artifacts/research-engine"
export TOOL_GRAPH_ENABLED="${TOOL_GRAPH_ENABLED:-1}"
exec python3 -m app.server