#!/usr/bin/env bash
# Bithumb cron 등록 — 기존 crontab에 BITHUMB 블록 병합/갱신/비활성화
set -euo pipefail

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
MARKER_BEGIN="# BITHUMB vol_breakout cron (begin)"
MARKER_END="# BITHUMB vol_breakout cron (end)"
MARKER_BEGIN_ALT="# BITHUMB (begin)"
MARKER_END_ALT="# BITHUMB (end)"
EXAMPLE="${ROOT}/scripts/crontab.bithumb.example"
BITHUMB_CRON_RE='bithumb/scripts/(00_run_download_cron|3_run_vol_breakout_cron|3_run_vol_monitor_cron|3_ensure_vol_monitor_serve|3_run_watch_cron)\.sh'

usage() {
  cat <<EOF
Usage: $(basename "$0") [--show|--apply|--disable|--enable|--remove]

  --show     등록될 cron 블록만 출력 (기본)
  --apply    crontab에 BITHUMB 블록 병합 후 설치 (example 주석=비활성)
  --disable  crontab BITHUMB 블록 내 실행 줄을 # 주석 처리
  --enable   crontab BITHUMB 블록 내 cron 줄 주석 해제
  --remove   crontab에서 BITHUMB 블록 제거

환경 변수:
  BITHUMB_PYTHON  cron에서 사용할 python3 (예: ~/opt/anaconda3/envs/coin/bin/python3)

로그:
  data/common/download_cron.log
  data/spot/operations/vol_breakout_cron.log
  data/spot/operations/vol_monitor_cron.log
  data/spot/operations/vol_monitor_serve.log
EOF
}

render_block() {
  {
    echo "$MARKER_BEGIN"
    sed "s|/Users/dsyoon/workspace/bithumb|${ROOT}|g" "$EXAMPLE" \
      | grep -v '^[[:space:]]*$'
    echo "$MARKER_END"
  }
}

strip_block() {
  awk -v re="${BITHUMB_CRON_RE}" '
    $0 == "# BITHUMB vol_breakout cron (begin)" { skip=1; next }
    $0 == "# BITHUMB vol_breakout cron (end)" { skip=0; next }
    $0 == "# BITHUMB (begin)" { skip=1; next }
    $0 == "# BITHUMB (end)" { skip=0; next }
    skip { next }
    $0 ~ re { next }
    { print }
  '
}

toggle_block() {
  local mode="$1"
  awk -v mode="$mode" -v re="${BITHUMB_CRON_RE}" '
    $0 == "# BITHUMB vol_breakout cron (begin)" || $0 == "# BITHUMB (begin)" {
      in_b=1
      print
      next
    }
    $0 == "# BITHUMB vol_breakout cron (end)" || $0 == "# BITHUMB (end)" {
      in_b=0
      print
      next
    }
    in_b && mode == "disable" && $0 !~ /^#/ && $0 ~ re {
      print "# " $0
      next
    }
    in_b && mode == "enable" && $0 ~ /^# / && $0 ~ re {
      sub(/^# /, "")
      print
      next
    }
    { print }
  '
}

ensure_dirs() {
  mkdir -p \
    "${ROOT}/data/common" \
    "${ROOT}/data/spot/operations" \
    "${ROOT}/docs/spot/3_operations"
}

ACTION="${1:---show}"
case "$ACTION" in
  --show)
    ensure_dirs
    render_block
    ;;
  --apply)
    ensure_dirs
    chmod +x "${ROOT}/scripts/"*.sh 2>/dev/null || true
    tmp="$(mktemp)"
    crontab -l 2>/dev/null | strip_block > "$tmp" || true
    render_block >> "$tmp"
    crontab "$tmp"
    rm -f "$tmp"
    echo "crontab installed. 확인: crontab -l"
    ;;
  --disable)
    tmp="$(mktemp)"
    if crontab -l 2>/dev/null | toggle_block disable > "$tmp"; then
      crontab "$tmp"
      echo "BITHUMB cron 비활성화(주석 처리) 완료."
    else
      echo "crontab empty or not found." >&2
      exit 1
    fi
    rm -f "$tmp"
    ;;
  --enable)
    tmp="$(mktemp)"
    if crontab -l 2>/dev/null | toggle_block enable > "$tmp"; then
      crontab "$tmp"
      echo "BITHUMB cron 활성화(주석 해제) 완료."
    else
      echo "crontab empty or not found." >&2
      exit 1
    fi
    rm -f "$tmp"
    ;;
  --remove)
    tmp="$(mktemp)"
    if crontab -l 2>/dev/null | strip_block > "$tmp"; then
      crontab "$tmp"
      echo "BITHUMB cron block removed."
    else
      echo "crontab empty or not found."
    fi
    rm -f "$tmp"
    ;;
  -h|--help)
    usage
    ;;
  *)
    usage >&2
    exit 1
    ;;
esac