#!/bin/bash
# from
# https://github.com/spiritLHLS/pve
# 2023.07.31

# cd /root

_red() { echo -e "\033[31m\033[01m$@\033[0m"; }
_green() { echo -e "\033[32m\033[01m$@\033[0m"; }
_yellow() { echo -e "\033[33m\033[01m$@\033[0m"; }
_blue() { echo -e "\033[36m\033[01m$@\033[0m"; }
reading(){ read -rp "$(_green "$1")" "$2"; }
utf8_locale=$(locale -a 2>/dev/null | grep -i -m 1 -E "UTF-8|utf8")
if [[ -z "$utf8_locale" ]]; then
  echo "No UTF-8 locale found"
else
  export LC_ALL="$utf8_locale"
  export LANG="$utf8_locale"
  export LANGUAGE="$utf8_locale"
  echo "Locale set to $utf8_locale"
fi

get_system_arch() {
    local sysarch="$(uname -m)"
    if [ "${sysarch}" = "unknown" ] || [ "${sysarch}" = "" ]; then
        local sysarch="$(arch)"
    fi
    # 根据架构信息设置系统位数并下载文件,其余 * 包括了 x86_64
    case "${sysarch}" in
        "i386" | "i686" | "x86_64")
            system_arch="x86"
            ;;
        "armv7l" | "armv8" | "armv8l" | "aarch64")
            system_arch="arch"
            ;;
        *)
            system_arch=""
            ;;
    esac
}

check_cdn() {
  local o_url=$1
  for cdn_url in "${cdn_urls[@]}"; do
    if curl -sL -k "$cdn_url$o_url" --max-time 6 | grep -q "success" > /dev/null 2>&1; then
      export cdn_success_url="$cdn_url"
      return
    fi
    sleep 0.5
  done
  export cdn_success_url=""
}

check_cdn_file() {
    check_cdn "https://raw.githubusercontent.com/spiritLHLS/ecs/main/back/test"
    if [ -n "$cdn_success_url" ]; then
        _yellow "CDN available, using CDN"
    else
        _yellow "No CDN available, no use CDN"
    fi
}

cdn_urls=("https://cdn.spiritlhl.workers.dev/" "https://cdn3.spiritlhl.net/" "https://cdn1.spiritlhl.net/" "https://ghproxy.com/" "https://cdn2.spiritlhl.net/")
check_cdn_file

pre_check(){
    home_dir=$(eval echo "~$(whoami)")
    if [ "$home_dir" != "/root" ]; then
        _red "The script will exit if the current path is not /root."
        _red "当前路径不是/root，脚本将退出。"
        exit 1
    fi
    if ! command -v dos2unix > /dev/null 2>&1; then
        apt-get install dos2unix -y
    fi
    if [ ! -f "buildvm.sh" ]; then
      curl -L ${cdn_success_url}https://raw.githubusercontent.com/spiritLHLS/pve/main/scripts/buildvm.sh -o buildvm.sh && chmod +x buildvm.sh
      dos2unix buildvm.sh
    fi
}

# files=$(find . -maxdepth 1 -name "vm*" | sort)
# if [ -n "$files" ]; then
#   for file in $files
#   do
#     cat "$file" >> vmlog
#   done
# fi

check_info(){
    log_file="vmlog"
    if [ ! -f "vmlog" ]; then
      _yellow "vmlog file does not exist in the current directory"
      _yellow "当前目录下不存在vmlog文件"
      vm_num=202
      web2_port=40003
      port_end=50025
    else
      while read line; do
          last_line="$line"
      done < "$log_file"
      last_line_array=($last_line)
      vm_num="${last_line_array[0]}"
      user="${last_line_array[1]}"
      password="${last_line_array[2]}"
      ssh_port="${last_line_array[6]}"
      web1_port="${last_line_array[7]}"
      web2_port="${last_line_array[8]}"
      port_start="${last_line_array[9]}"
      port_end="${last_line_array[10]}"
      system="${last_line_array[11]}"
      storage="${last_line_array[12]}"
      _green "Current information corresponding to the last NAT server:"
      _green "当前最后一个NAT服务器对应的信息："
      echo "NAT服务器(NAT Server): $vm_num"
    #   echo "用户名: $user"
    #   echo "密码: $password"
      echo "外网SSH端口(Extranet SSH port): $ssh_port"
      echo "外网80端口(Extranet port 80): $web1_port"
      echo "外网443端口(Extranet port 443): $web2_port"
      echo "外网其他端口范围(Other port ranges): $port_start-$port_end"
      echo "系统(System)：$system"
      echo "存储盘(Storage Disk)：$storage"
    fi
}

build_new_vms(){
    while true; do
        _green "How many more NAT servers need to be generated? (Enter how many new NAT servers to add):"
        reading "还需要生成几个NAT服务器？(输入新增几个NAT服务器)：" new_nums
        if [[ "$new_nums" =~ ^[1-9][0-9]*$ ]]; then
            break
        else
            _yellow "Invalid input, please enter a positive integer."
            _yellow "输入无效，请输入一个正整数。"
        fi
    done
    while true; do
        _green "How many CPUs are assigned to each virtual machine? (Enter 1 if 1 core is assigned to each virtual machine):"
        reading "每个虚拟机分配几个CPU？(若每个虚拟机分配1核，则输入1)：" cpu_nums
        if [[ "$cpu_nums" =~ ^[1-9][0-9]*$ ]]; then
            break
        else
            _yellow "Invalid input, please enter a positive integer."
            _yellow "输入无效，请输入一个正整数。"
        fi
    done
    while true; do
        _green "How much memory is allocated per virtual machine? (If 512 MB of memory is allocated per virtual machine, enter 512):"
        reading "每个虚拟机分配多少内存？(若每个虚拟机分配512MB内存，则输入512)：" memory_nums
        if [[ "$memory_nums" =~ ^[1-9][0-9]*$ ]]; then
            break
        else
            _yellow "Invalid input, please enter a positive integer."
            _yellow "输入无效，请输入一个正整数。"
        fi
    done
    while true; do
        _green "On which storage drive are the virtual machines opened? (Leave blank or enter 'local' if the virtual machine is to be opened on the system disk):"
        reading "虚拟机们开设在哪个存储盘上？(若虚拟机要开设在系统盘上，则留空或输入local)：" storage
        if [ -z "$storage" ]; then
          storage="local"
        fi
        break
    done
    while true; do
        _green "How many hard disks are allocated per virtual machine? (If 5G hard drives are allocated per virtual machine, enter 5):"
        reading "每个虚拟机分配多少硬盘？(若每个虚拟机分配5G硬盘，则输入5)：" disk_nums
        if [[ "$disk_nums" =~ ^[1-9][0-9]*$ ]]; then
            break
        else
            _yellow "Invalid input, please enter a positive integer."
            _yellow "输入无效，请输入一个正整数。"
        fi
    done
    if [ "$system_arch" = "x86" ]; then
      while true; do
          sys_status="false"
          _green "What system does each virtual machine use? (Leave blank or enter debian11 if all use debian11):"
          reading "每个虚拟机都使用什么系统？(若都使用debian11，则留空或输入debian11)：" system
          if [ -z "$system" ]; then
            system="debian11"
          fi
          systems=("debian10" "debian11" "debian9" "ubuntu18" "ubuntu20" "ubuntu22" "archlinux" "centos9-stream" "centos8-stream" "almalinux8" "almalinux9" "fedora33" "fedora34" "opensuse-leap-15")
          for sys in ${systems[@]}; do
            if [[ "$system" == "$sys" ]]; then
              sys_status="true"
              break
            fi
          done
          if [ "$sys_status" = "true" ]; then
              break
          else
              _yellow "This system is not supported, please check https://github.com/spiritLHLS/Images for the names of supported systems"
              _yellow "不支持该系统，请查看 https://github.com/spiritLHLS/Images 支持的系统名字"
          fi
      done
    else
      while true; do
          sys_status="false"
          _green "What system does each virtual machine use? (Leave blank or enter debian11 if all use debian11):"
          reading "每个虚拟机都使用什么系统？(若都使用ubuntu22，则留空或输入ubuntu22)：" system
          if [ -z "$system" ]; then
            system="ubuntu22"
          fi
          systems=("ubuntu14" "ubuntu16" "ubuntu18" "ubuntu20" "ubuntu22")
          for sys in ${systems[@]}; do
            if [[ "$system" == "$sys" ]]; then
              sys_status="true"
              break
            fi
          done
          if [ "$sys_status" = "true" ]; then
              break
          else
              _yellow "Unable to install corresponding system, please check http://cloud-images.ubuntu.com for supported system images "
              _yellow "无法安装对应系统，请查看 http://cloud-images.ubuntu.com 支持的系统镜像 "
          fi
      done
    fi
    for ((i=1; i<=$new_nums; i++)); do
        vm_num=$(($vm_num + 1))
        user=$(cat /dev/urandom | tr -dc 'a-zA-Z' | fold -w 4 | head -n 1)
        ori=$(date | md5sum)
        password=${ori: 2: 9}
        ssh_port=$(($web2_port + 1))
        web1_port=$(($web2_port + 2)) 
        web2_port=$(($web1_port + 1))
        port_start=$(($port_end + 1))
        port_end=$(($port_start + 25))
        ./buildvm.sh $vm_num $user $password $cpu_nums $memory_nums $disk_nums $ssh_port $web1_port $web2_port $port_start $port_end $system $storage
        cat "vm$vm_num" >> vmlog
        rm -rf "vm$vm_num"
        sleep 60
    done
}

pre_check
get_system_arch
if [ -z "${system_arch}" ] || [ ! -v system_arch ]; then
   _red "This script can only run on machines under x86_64 or arm architecture."
   exit 1
fi
check_info
build_new_vms
check_info