#!/usr/bin/env bash
# macOS LaunchAgent — vol_live 모니터(8766) 로그인 시 자동 기동·유지
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
LABEL="com.bithumb.vol-monitor"
PLIST_SRC="${ROOT}/scripts/com.bithumb.vol-monitor.plist.template"
PLIST_DST="${HOME}/Library/LaunchAgents/${LABEL}.plist"
LOG="${ROOT}/data/spot/operations/vol_monitor_serve.log"

usage() {
  cat <<EOF
Usage: $(basename "$0") [--install|--uninstall|--status]

  --install    LaunchAgent 등록 + 즉시 기동 (로그인·크래시 시 자동 재시작)
  --uninstall  LaunchAgent 제거
  --status     실행 상태 확인

접속: http://127.0.0.1:8766/vol_live_monitor.html
EOF
}

resolve_python() {
  # shellcheck source=scripts/_cron_env.sh
  source "${ROOT}/scripts/_cron_env.sh"
  resolve_bithumb_python
}

render_plist() {
  local python_bin="$1"
  mkdir -p "${ROOT}/data/spot/operations"
  sed \
    -e "s|__ROOT__|${ROOT}|g" \
    -e "s|__PYTHON__|${python_bin}|g" \
    -e "s|__LOG__|${LOG}|g" \
    "$PLIST_SRC"
}

cmd="${1:---status}"
case "$cmd" in
  --install)
    PYTHON="$(resolve_python)" || exit 1
    mkdir -p "${HOME}/Library/LaunchAgents"
    render_plist "$PYTHON" > "$PLIST_DST"
    launchctl bootout "gui/$(id -u)/${LABEL}" 2>/dev/null || true
    launchctl bootstrap "gui/$(id -u)" "$PLIST_DST"
    launchctl enable "gui/$(id -u)/${LABEL}" 2>/dev/null || true
    launchctl kickstart -k "gui/$(id -u)/${LABEL}" 2>/dev/null || true
    sleep 2
    if curl -sf -o /dev/null --connect-timeout 3 "http://127.0.0.1:8766/vol_live_monitor.html"; then
      echo "LaunchAgent 설치 완료 — http://127.0.0.1:8766/vol_live_monitor.html"
    else
      echo "LaunchAgent 등록됨. 접속 안 되면 로그 확인: $LOG" >&2
      tail -15 "$LOG" 2>/dev/null || true
    fi
    ;;
  --uninstall)
    launchctl bootout "gui/$(id -u)/${LABEL}" 2>/dev/null || true
    rm -f "$PLIST_DST"
    echo "LaunchAgent 제거됨"
    ;;
  --status)
    if launchctl print "gui/$(id -u)/${LABEL}" >/dev/null 2>&1; then
      echo "LaunchAgent: 등록됨"
      launchctl print "gui/$(id -u)/${LABEL}" 2>/dev/null | grep -E "state =|pid =|last exit" || true
    else
      echo "LaunchAgent: 미등록"
    fi
    if curl -sf -o /dev/null --connect-timeout 2 "http://127.0.0.1:8766/vol_live_monitor.html"; then
      echo "HTTP 8766: 응답 OK"
    else
      echo "HTTP 8766: 연결 불가 (서버 미기동)"
    fi
    ;;
  -h|--help)
    usage
    ;;
  *)
    usage >&2
    exit 1
    ;;
esac