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

LABEL="local.nodedc.launcher-bff"
PLIST="$HOME/Library/LaunchAgents/${LABEL}.plist"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
NODE_BIN="${NODE_BIN:-$(command -v node)}"
LOG_OUT="/tmp/nodedc-launcher-bff.out.log"
LOG_ERR="/tmp/nodedc-launcher-bff.err.log"
USER_ID="$(id -u)"

if [[ -z "${NODE_BIN}" || ! -x "${NODE_BIN}" ]]; then
  echo "Node.js executable not found. Set NODE_BIN=/absolute/path/to/node and retry." >&2
  exit 1
fi

mkdir -p "$(dirname "${PLIST}")"

launchctl bootout "gui/${USER_ID}/${LABEL}" >/dev/null 2>&1 || true
launchctl bootout "gui/${USER_ID}" "${PLIST}" >/dev/null 2>&1 || true

if command -v lsof >/dev/null 2>&1; then
  while IFS= read -r PID_ON_PORT; do
    [[ -z "${PID_ON_PORT}" ]] && continue
    COMMAND_LINE="$(ps -p "${PID_ON_PORT}" -o command= 2>/dev/null || true)"
    if [[ "${COMMAND_LINE}" == *"server/dev-server.mjs"* ]]; then
      kill "${PID_ON_PORT}" >/dev/null 2>&1 || true
    fi
  done < <(lsof -tiTCP:5173 -sTCP:LISTEN 2>/dev/null || true)
fi

cat > "${PLIST}" <<PLIST
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>${LABEL}</string>
  <key>ProgramArguments</key>
  <array>
    <string>${NODE_BIN}</string>
    <string>${REPO_DIR}/server/dev-server.mjs</string>
  </array>
  <key>WorkingDirectory</key>
  <string>${REPO_DIR}</string>
  <key>RunAtLoad</key>
  <true/>
  <key>KeepAlive</key>
  <dict>
    <key>SuccessfulExit</key>
    <false/>
  </dict>
  <key>EnvironmentVariables</key>
  <dict>
    <key>PATH</key>
    <string>$(dirname "${NODE_BIN}"):/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin</string>
  </dict>
  <key>StandardOutPath</key>
  <string>${LOG_OUT}</string>
  <key>StandardErrorPath</key>
  <string>${LOG_ERR}</string>
</dict>
</plist>
PLIST

launchctl bootstrap "gui/${USER_ID}" "${PLIST}"
launchctl enable "gui/${USER_ID}/${LABEL}" >/dev/null 2>&1 || true
launchctl kickstart -k "gui/${USER_ID}/${LABEL}" >/dev/null 2>&1 || true

for _ in {1..20}; do
  if curl -fsS --max-time 2 http://launcher.local.nodedc/healthz >/dev/null 2>&1; then
    echo "NODE.DC launcher BFF is running via LaunchAgent: ${LABEL}"
    echo "Health: http://launcher.local.nodedc/healthz"
    echo "Logs: ${LOG_OUT} / ${LOG_ERR}"
    exit 0
  fi
  sleep 0.5
done

echo "LaunchAgent installed, but health check failed." >&2
echo "Check logs: ${LOG_OUT} / ${LOG_ERR}" >&2
exit 1