#!/usr/bin/env bash
set -euo pipefail

PORT=${PORT:-8506}
APP_MODULE=${APP_MODULE:-news_mcp.mcp_server_fastmcp:app}
LOGFILE=${LOGFILE:-logs/server.log}
PIDFILE=${PIDFILE:-logs/server.pid}

mkdir -p "$(dirname "$LOGFILE")"
mkdir -p "$(dirname "$PIDFILE")"

if [ -f "$PIDFILE" ]; then
  PID="$(cat "$PIDFILE" 2>/dev/null || true)"
  if [ -n "$PID" ] && ps -p "$PID" > /dev/null 2>&1; then
    echo "Server already running (PID $PID)"
    exit 0
  fi
  rm -f "$PIDFILE"
fi

# If another process already binds the configured port, fail fast rather than
# launching a second server and hiding the collision.
if command -v curl >/dev/null 2>&1; then
  if curl -sf "http://127.0.0.1:${PORT}/health" >/dev/null 2>&1; then
    echo "A server is already responding on port $PORT; refusing to start a second instance"
    exit 1
  fi
fi

UVICORN_BIN="${UVICORN_BIN:-}"
if [ -z "$UVICORN_BIN" ]; then
  if [ -x ".venv/bin/uvicorn" ]; then
    UVICORN_BIN=".venv/bin/uvicorn"
  else
    UVICORN_BIN="uvicorn"
  fi
fi

export PYTHONPATH="$(pwd):${PYTHONPATH:-}"

nohup "$UVICORN_BIN" "$APP_MODULE" --host 0.0.0.0 --port "$PORT" > "$LOGFILE" 2>&1 &
echo $! > "$PIDFILE"
echo "Uvicorn started on port $PORT (PID $(cat "$PIDFILE"))"