#!/bin/bash

declare -A dl_mirrors
dl_mirrors=(
    ["neimeng"]="https://node.histb.com:9088/update/system"
    ["hunan"]="https://node3.histb.com:9088/update/system"
    ["hongkong"]="https://node2.histb.com/update/system"
    ["dl"]="https://dl.ecoo.top/update/system"
)

declare -a system_versions
system_versions=(
    [1]='海纳思NAS社区版固件 Ubuntu-20.04.5-arm64.gz'
    [2]='海纳思纯净版固件 basic-hinas-64.gz'
)

readonly COLOUR_RESET='\e[0m'
declare -A COLORS
COLORS=(
    ["red"]='\e[91m'
    ["green"]='\e[32;1m' 
    ["yellow"]='\e[33m'
)

printStr() {
    color=$1
    printf ${COLORS[${color}]}"$2"${COLOUR_RESET}"\n"
}

_exit() {
    exit_singal=$1
    shift
    [ "$exit_singal" != "0" ] && printStr red "$*" || printStr green "$*"
    exit $exit_singal
}

get_mirror_url() {
	tmp_file=/dev/shm/net_test.pl
	[ -f "${tmp_file}" ] && rm -f ${tmp_file}
	touch $tmp_file
	
    for mirror_name in ${!dl_mirrors[*]}; do
        mirror_url=${dl_mirrors[$mirror_name]}
		NODE_CHECK=$(curl -k -L --connect-timeout 3 -m 3 2>/dev/null -w "%{http_code} %{time_total}" ${mirror_url}/net_test|xargs)
		NODE_STATUS=$(echo ${NODE_CHECK}|awk '{print $2}')
		TIME_TOTAL=$(echo ${NODE_CHECK}|awk '{print $3 * 1000 }'|cut -d '.' -f 1)
		if [ "${NODE_STATUS}" == "200" ];then
            echo "$TIME_TOTAL $mirror_name $mirror_url" >> $tmp_file
		fi
    done

	NODE_NAME=$(cat $tmp_file|sort -g -t " " -k 1|head -n 1|awk '{print $2}')
	NODE_URL=$(cat $tmp_file|sort -g -t " " -k 1|head -n 1|awk '{print $3}')
	printStr green "using mirror: $NODE_NAME"
	rm -f $tmp_file
}

get_md5() {
    case $1 in
    -c)
        shift
        wget -4 -q --no-check-certificate $1 -O - | grep $2 | awk '{print $1}'
        ;;
    -l)
        shift
        [ ! -f "$1" ] && return 1
        md5sum $1 2> /dev/null | awk '{print $1}'
        ;;
    esac
}

echo "
+----------------------------------------------------------------------
| 海纳思系统固件切换专用脚本温馨提示：
+----------------------------------------------------------------------
| 切换后原系统将完全清除，请注意保存资料。
+----------------------------------------------------------------------
| 如果不确定，请按CTRL+C结束此脚本.
+----------------------------------------------------------------------
"

if [ $(whoami) != "root" ];then
	_exit 1 "请使用root权限切换系统命令！"
fi

date_20230818=$(date -d '20230818' +%s)
if [ $(date -d $(cat /etc/nasversion) +%s) -lt ${date_20230818} ]; then
	_exit 1 "请升级到 20230818 或更新的版本后再执行此命令！"
fi

if [ $(df -T|grep /tmp|awk '{print int($5)}') -lt 358400 ]; then
    rm -rf /tmp/*
fi

is64bit=$(getconf LONG_BIT)
if [ "${is64bit}" != '64' ];then
	_exit 1 "抱歉, 当前系统切换版本不支持32位系统, 请使用64位系统!";
fi

for index in "${!system_versions[@]}"; do
    printStr green "$index. $(echo ${system_versions[$index]}|awk '{print $1}')" 
done

while :; do
    printStr yellow "你想要安装哪个版本? 输入数字后按回车确定：" 
    read version_number
    for index in "${!system_versions[@]}"; do
        if [ "$version_number" = "$index" ]; then
            selected_version="$(echo ${system_versions[$index]}|awk '{print $1}')" 
            dlfile="$(echo ${system_versions[$index]}|awk '{print $2}')" 
            break 2
        fi
    done
done
echo "正在检测最快节点服务器"
get_mirror_url
[ -z ${NODE_URL} ] && _exit 1 "所有下载节点服务器网络不可达，稍后再试，或联系群主修复。"
rm -rf /tmp/*
wget -4 -q --show-progress --no-check-certificate ${NODE_URL}/${dlfile} -O /root/${dlfile} || _exit 1 "下载失败，请重试"
[ "$(get_md5 -c ${NODE_URL}/${dlfile}.md5sum ${dlfile})" != "$(get_md5 -l /root/${dlfile})" ] && _exit 1 "文件校验失败，请重试"
printStr green "正在配置系统，请稍后..."
mv /root/${dlfile} /root/backup-64.gz
mkdir -p /tmp/backup
mount /dev/mmcblk0p8 /tmp/backup
mv /root/backup-64.gz /tmp/backup
sync
umount /tmp/backup

printStr yellow "
==============================================================
配置已完成，盒子正在重启并准备初始化中，
请关闭电源重新上电，8分钟后手动重启电源第二次，并继续稍等初始化结束
=============================================================="
recoverbackup -a