#!/bin/bash
# 读取 stdin JSON 参数
read -r input
format=$(echo "$input" | python3 -c "
import sys, json
try:
    d = json.load(sys.stdin)
    print(d.get('format', 'full'))
except: print('full')
" 2>/dev/null || echo "full")

case "$format" in
  date)    TZ='Asia/Shanghai' date '+{"datetime": "%Y-%m-%d"}' ;;
  time)    TZ='Asia/Shanghai' date '+{"datetime": "%H:%M:%S"}' ;;
  *)       TZ='Asia/Shanghai' date '+{"datetime": "%Y-%m-%d %H:%M:%S"}' ;;
esac