#!/bin/bash



# 检查依赖工具

check_dependencies() {

    operation=$1

    if ! command -v "$operation" &> /dev/null; then

        echo "错误: $operation命令不可用，请安装$operation包" >&2

        return 1

    fi

    return 0

}



# 手动设置时间

function SetTime() {

   time=$1

    # 检查依赖

    if ! check_dependencies "timedatectl"; then

        return 1

    fi

   # 关闭时钟同步

   operation=$(sudo timedatectl set-ntp false;sudo systemctl stop chronyd)

   # 查看chronyd服务状态

   status=$(sudo systemctl status chronyd)



   status_ans=$(echo "$status" | grep -E 'Active:' | grep "inactive")

   if [ -z "$status_ans" ]; then

     code=1

     return $code

   fi

    

   set_date=$(sudo date -s "$time")

   # 验证设置结果

   current_time=$(date '+%Y-%m-%d %H:%M:%S')

   current_zone=$(date '+%Z')

   echo "设置成功，当前时间: $current_time $current_zone"

   code=$?

   return $code

}







# 时钟同步时间

function AutoSetTime() {



    # 检查依赖

    if ! check_dependencies "timedatectl"; then

        return 1

    fi

   # 开启时钟同步

   operation=$(sudo timedatectl set-ntp true;sudo systemctl start chronyd)

   code=$?

   if [ "$code" != 0 ] ; then

    return $code

   fi

   # 查看chronyd服务状态

   status=$(sudo systemctl status chronyd)

   status_ans=$(echo "$status" | grep -E 'Active:' | grep "active (running)")

   if [ -z "$status_ans" ]; then

     code=1

   fi

   return $code



}







# 缺少必需参数或请求帮助时输出用法

if [ "$1" = "-h" ] ; then

   echo "settime.sh <autotime|settime> [time]"

   echo " - update system_time"

   [ "$1" = "-h" ] && exit 0

fi

if [ $# -lt 1 ]; then

  echo "缺少参数"

  exit 1

fi







type="$1"

time="$2"

if [ "$type" == "autotime" ]; then

    AutoSetTime

elif [ "$type" == "settime" ]; then

    SetTime "$time"

fi

code=$?

exit $code