#!/bin/bash

hostArchVersion=""
hostArch=""
#### CollectSystemInfo ####
serverName=""
serverIpPbV4=""
serverIpInV4=""
serverIpPbV6=""
serverIpInV6=""
location=""
provider=""
managePort=""
cpuBrand=""
cpuCore=""
memoryTotal=""
diskTotal=""
diskUsage=""
osInfo=""
osKernelInfo=""
tcpControl=""
virtualization=""
ioSpeed=""
machineId=""
archInfo=""
agentVersion=""

### tmp usage
ioavg=""
public_ipv4=""
inner_ipv4=""
public_ipv6=""
inner_ipv6=""
country=""
region=""
city=""
org=""
managePort=""
#### CollectSystemInfo ####

command_exists() {
  command -v "$@" >/dev/null 2>&1
}

#######   获取系统版本及64位或32位信息
check_sys() {
  # 获取当前终端的宽度，动态调整分割线的长度
  shellwidth=$(stty size | awk '{print $2}')
  SplitLine=$(yes "-" | sed ${shellwidth}'q' | tr -d '\n')

  sys_bit=$(uname -m)
  case $sys_bit in
    i[36]86)
      os_bit="32"
      hostArch="386"
      ;;
    x86_64)
      os_bit="64"
      hostArch="amd64"
      ;;
    *armv6*)
      os_bit="arm"
      hostArch="arm6"
      ;;
    *armv7*)
      os_bit="arm"
      hostArch="arm7"
      ;;
    *aarch64* | *armv8*)
      os_bit="arm64"
      hostArch="arm64"
      ;;
    *)
      error "
       哈哈……这个 辣鸡脚本 不支持你的系统。 (-_-) \n
       备注: 仅支持 Ubuntu 16+ / Debian 8+ / CentOS 7+ 系统
       " && exit 1
      ;;
  esac
  ## 判定Linux的发行版本
  if [ -f /etc/redhat-release ]; then
    hostArchVersion="centos"
  elif cat /etc/issue | grep -Eqi "debian"; then
    hostArchVersion="debian"
  elif cat /etc/issue | grep -Eqi "ubuntu"; then
    hostArchVersion="ubuntu"
  elif cat /etc/issue | grep -Eqi "centos|red hat|redhat"; then
    hostArchVersion="centos"
  elif cat /proc/version | grep -Eqi "debian"; then
    hostArchVersion="debian"
  elif cat /proc/version | grep -Eqi "ubuntu"; then
    hostArchVersion="ubuntu"
  elif cat /proc/version | grep -Eqi "centos|red hat|redhat"; then
    hostArchVersion="centos"
  else
    hostArchVersion=""
  fi

  # 判断系统的包管理工具  apt, yum, or zypper
  getPackageManageTool() {
    if [[ -n $(command -v apt-get) ]]; then
      CMD_INSTALL="apt-get -y -qq install"
      CMD_UPDATE="apt-get -qq update"
      CMD_REMOVE="apt-get -y remove"
    elif [[ -n $(command -v yum) ]]; then
      CMD_INSTALL="yum -y -q install"
      CMD_UPDATE="yum -q makecache"
      CMD_REMOVE="yum -y remove"
    elif [[ -n $(command -v zypper) ]]; then
      CMD_INSTALL="zypper -y install"
      CMD_UPDATE="zypper ref"
      CMD_REMOVE="zypper -y remove"
    else
      return 1
    fi
    return 0
  }

  # 检查系统包管理方式，更新包
  getPackageManageTool
  if [[ $? -eq 1 ]]; then
    error "系统的包管理不是 APT or YUM, 请手动安装所需要的软件."
    return 1
  fi

  return 0
}

#######################################
# description
# Arguments:
#   1
#######################################
GoIOTest() {
  (LANG=C dd if=/dev/zero of=benchtest_$$ bs=512k count=$1 conv=fdatasync && rm -f benchtest_$$) 2>&1 | awk -F, '{io=$NF} END { print io}' | sed 's/^[ \t]*//;s/[ \t]*$//'
}

#######################################
# description
# Arguments:
#   1
# Returns:
#   <unknown> ...
#######################################
calc_size() {
  local raw=$1
  local total_size=0
  local num=1
  local unit="KB"
  if ! [[ ${raw} =~ ^[0-9]+$ ]]; then
    echo ""
    return
  fi
  if [ "${raw}" -ge 1073741824 ]; then
    num=1073741824
    unit="TB"
  elif [ "${raw}" -ge 1048576 ]; then
    num=1048576
    unit="GB"
  elif [ "${raw}" -ge 1024 ]; then
    num=1024
    unit="MB"
  elif [ "${raw}" -eq 0 ]; then
    echo "${total_size}"
    return
  fi
  total_size=$(awk 'BEGIN{printf "%.1f", '$raw' / '$num'}')
  echo "${total_size} ${unit}"
}

#######################################
# description
# Arguments:
#  None
# Returns:
#   <unknown> ...
#######################################
GethostArchInfo() {
  [ -f /etc/redhat-release ] && awk '{print $0}' /etc/redhat-release && return
  [ -f /etc/os-release ] && awk -F'[= "]' '/PRETTY_NAME/{print $3,$4,$5}' /etc/os-release && return
  [ -f /etc/lsb-release ] && awk -F'[="]+' '/DESCRIPTION/{print $2}' /etc/lsb-release && return
}

#######################################
# description
# Globals:
#   freespace
#   io1
#   io2
#   io3
#   ioall
#   ioavg
#   ioraw1
#   ioraw2
#   ioraw3
#   writemb
# Arguments:
#  None
#######################################
StartIOTest() {
  echo "start IO speed test !"
  freespace=$(df -m . | awk 'NR==2 {print $4}')
  if [ -z "${freespace}" ]; then
    freespace=$(df -m . | awk 'NR==3 {print $3}')
  fi
  if [ ${freespace} -gt 1024 ]; then
    writemb=2048
    io1=$(GoIOTest ${writemb})
    echo "I/O Speed(1st run) : $io1)"
    io2=$(GoIOTest ${writemb})
    echo "I/O Speed(2st run) : $io2)"
    io3=$(GoIOTest ${writemb})
    echo "I/O Speed(3st run) : $io3)"
    ioraw1=$(echo $io1 | awk 'NR==1 {print $1}')
    [ "$(echo $io1 | awk 'NR==1 {print $2}')" == "GB/s" ] && ioraw1=$(awk 'BEGIN{print '$ioraw1' * 1024}')
    ioraw2=$(echo $io2 | awk 'NR==1 {print $1}')
    [ "$(echo $io2 | awk 'NR==1 {print $2}')" == "GB/s" ] && ioraw2=$(awk 'BEGIN{print '$ioraw2' * 1024}')
    ioraw3=$(echo $io3 | awk 'NR==1 {print $1}')
    [ "$(echo $io3 | awk 'NR==1 {print $2}')" == "GB/s" ] && ioraw3=$(awk 'BEGIN{print '$ioraw3' * 1024}')
    ioall=$(awk 'BEGIN{print '$ioraw1' + '$ioraw2' + '$ioraw3'}')
    ioavg=$(awk 'BEGIN{printf "%.1f", '$ioall' / 3}')
    echo "I/O Speed(average) : $ioavg MB/s)"
  else
    echo " $(_red "Not enough space for I/O Speed test!")"
  fi

}

#######################################
# description
# Arguments:
#  None
#######################################
GetAgentLatestVersion() {

  ls /octopus-agent | grep "octopus-agent" | cut -d "-" -f3- | cut -d"." -f1

}

#######################################
# description
# Globals:
#   cpuName
#   sys_manu
#   sys_product
#   sys_ver
#   virt
#   virtualx
# Arguments:
#  None
#######################################
Check_Virtualization() {

  echo "start to check host virtualization !"

  command_exists "dmesg" && virtualx="$(dmesg 2>/dev/null)"
  if command_exists "dmidecode"; then
    sys_manu="$(dmidecode -s system-manufacturer 2>/dev/null)"
    sys_product="$(dmidecode -s system-product-name 2>/dev/null)"
    sys_ver="$(dmidecode -s system-version 2>/dev/null)"
  else
    sys_manu=""
    sys_product=""
    sys_ver=""
  fi
  if grep -qa docker /proc/1/cgroup; then
    virt="Docker"
  elif grep -qa lxc /proc/1/cgroup; then
    virt="LXC"
  elif grep -qa container=lxc /proc/1/environ; then
    virt="LXC"
  elif [[ -f /proc/user_beancounters ]]; then
    virt="OpenVZ"
  elif [[ ${virtualx} == *kvm-clock*   ]]; then
    virt="KVM"
  elif [[ ${sys_product} == *KVM*   ]]; then
    virt="KVM"
  elif [[ ${cpuName} == *KVM*   ]]; then
    virt="KVM"
  elif [[ ${cpuName} == *QEMU*   ]]; then
    virt="KVM"
  elif [[ ${virtualx} == *"VMware Virtual Platform"*   ]]; then
    virt="VMware"
  elif [[ ${sys_product} == *"VMware Virtual Platform"*   ]]; then
    virt="VMware"
  elif [[ ${virtualx} == *"Parallels Software International"*   ]]; then
    virt="Parallels"
  elif [[ ${virtualx} == *VirtualBox*   ]]; then
    virt="VirtualBox"
  elif [[ -e /proc/xen ]]; then
    if grep -q "control_d" "/proc/xen/capabilities" 2>/dev/null; then
      virt="Xen-Dom0"
    else
      virt="Xen-DomU"
    fi
  elif [ -f "/sys/hypervisor/type" ] && grep -q "xen" "/sys/hypervisor/type"; then
    virt="Xen"
  elif [[ ${sys_manu} == *"Microsoft Corporation"*   ]]; then
    if [[ ${sys_product} == *"Virtual Machine"*   ]]; then
      if [[ ${sys_ver} == *"7.0"* || ${sys_ver} == *"Hyper-V"     ]]; then
        virt="Hyper-V"
      else
        virt="Microsoft Virtual Machine"
      fi
    fi
  else
    virt="Dedicated"
  fi

}
GetManagePort() {

  tmpManagePorts=$(netstat -ntulp | grep sshd | grep -w tcp | grep -v "127.0.0.1" | awk '{print$4}' | cut -d":" -f2)

  managePort=$(echo $tmpManagePorts | tr '\n' ' ')

  echo "manage Port is => $managePort"

}

#######################################
# description
# Globals:
#   city
#   country
#   org
#   public_ipv4
#   region
# Arguments:
#  None
#######################################
GetIpv4Info() {

  echo "start to get system  public ip info !"

  # public ip info
  org="$(wget -q -T10 -O- ipinfo.io/org)"
  city="$(wget -q -T10 -O- ipinfo.io/city)"
  country="$(wget -q -T10 -O- ipinfo.io/country)"
  region="$(wget -q -T10 -O- ipinfo.io/region)"
  public_ipv4="$(wget -q -T10 -O- ipinfo.io/ip)"
  public_ipv6="$(curl -q --max-time 5 -6 https://ifconfig.co/ip)"

  if [ -z "$public_ipv4" ]; then
    public_ipv4=" "
  fi

  if [ -z "$public_ipv6" ]; then
    public_ipv6=" "
  fi

  # inner ipinfo
  export interface_prefix=("[[:space:]]eth[0-9]{1,2}" "[[:space:]]ens[0-9]{1,3}" "[[:space:]]eno[0-9]{1,3}" "[[:space:]]enp[0-9]{1,2}" "[[:space:]]enp[0-9]{1,2}s[0-9]{1,3}")
  local real_interface="eth0"

  for interface in "${interface_prefix[@]}"; do
      echo $(ip link show) | grep -oE ${interface} | head -1
      if [[ $? -eq 0 ]]; then
          real_interface=$(echo $(ip link show) | grep -oE ${interface} | head -1 | cut -d" " -f2)
          echo "当前主机的真实内网网卡为 => [ $real_interface ]"
          break
    fi
  done

  # 提取IPv4地址（CIDR格式）
  ipv4_regex="inet[[:space:]](25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\/[0-9]{1,2}"

  # 提取IPv6地址（CIDR格式）
  ipv6_regex="inet6[[:space:]]([0-9a-fA-F]{0,4}(:[0-9a-fA-F]{0,4}){1,7})\/[0-9]{1,3}"

  # 查找IPv4地址
  inner_ipv4=$(echo $(ip addr show $real_interface) | grep -oE $ipv4_regex | grep -v 127 | cut -d" " -f2)
  echo "Interface: $real_interface, IPv4 Address: $inner_ipv4"

   # 查找IPv6地址
  inner_ipv6=$(echo $(ip addr show $real_interface) | grep -oE $ipv6_regex | grep -v "::1/" | cut -d" " -f2)
  echo "Interface: $real_interface, IPv6 Address: $inner_ipv6"

}

echo "start to collect system info !"

check_sys

cpuName=$(awk -F: '/model name/ {name=$2} END {print name}' /proc/cpuinfo | sed 's/^[ \t]*//;s/[ \t]*$//')
cores=$(awk -F: '/processor/ {core++} END {print core}' /proc/cpuinfo)
freq=$(awk -F'[ :]' '/cpu MHz/ {print $4;exit}' /proc/cpuinfo)
ccache=$(awk -F: '/cache size/ {cache=$2} END {print cache}' /proc/cpuinfo | sed 's/^[ \t]*//;s/[ \t]*$//')
cpu_aes=$(grep -i 'aes' /proc/cpuinfo)
cpu_virt=$(grep -Ei 'vmx|svm' /proc/cpuinfo)
tram=$(
  LANG=C
  free | awk '/Mem/ {print $2}'
)
tram=$(calc_size $tram)
uram=$(
  LANG=C
  free | awk '/Mem/ {print $3}'
)
uram=$(calc_size $uram)
swap=$(
  LANG=C
  free | awk '/Swap/ {print $2}'
)
swap=$(calc_size $swap)
uswap=$(
  LANG=C
  free | awk '/Swap/ {print $3}'
)
uswap=$(calc_size $uswap)
up=$(awk '{a=$1/86400;b=($1%86400)/3600;c=($1%3600)/60} {printf("%d days, %d hour %d min\n",a,b,c)}' /proc/uptime)
if command_exists "w"; then
  load=$(
    LANG=C
    w | head -1 | awk -F'load average:' '{print $2}' | sed 's/^[ \t]*//;s/[ \t]*$//'
  )
elif command_exists "uptime"; then
  load=$(
    LANG=C
    uptime | head -1 | awk -F'load average:' '{print $2}' | sed 's/^[ \t]*//;s/[ \t]*$//'
  )
fi
opsy=$(GethostArchInfo)
arch=$(uname -m)
if command_exists "getconf"; then
  lbit=$(getconf LONG_BIT)
else
  echo ${arch} | grep -q "64" && lbit="64" || lbit="32"
fi
kern=$(uname -r)
disk_total_size=$(
  LANG=C
  df -t simfs -t ext2 -t ext3 -t ext4 -t btrfs -t xfs -t vfat -t ntfs -t swap --total 2>/dev/null | grep total | awk '{ print $2 }'
)
disk_total_size=$(calc_size $disk_total_size)
disk_used_size=$(
  LANG=C
  df -t simfs -t ext2 -t ext3 -t ext4 -t btrfs -t xfs -t vfat -t ntfs -t swap --total 2>/dev/null | grep total | awk '{ print $3 }'
)
disk_used_size=$(calc_size $disk_used_size)
tcpctrl=$(sysctl net.ipv4.tcp_congestion_control | awk -F ' ' '{print $3}')

# todo
#  StartIOTest

GetManagePort

GetIpv4Info

Check_Virtualization

machineNumber=""

if [[ $(cat /etc/hostname | cut -d"-" -f 3 | grep -c '^[0-9][0-9]') -gt 0 ]]; then
    machineNumber=$(cat /etc/hostname | cut -d"-" -f 3)
else
    machineNumber=99
fi
export agentServerInfoFile="/octopus-agent/octopus-agent.conf"

#cat >/etc/environment.d/octopus-agent.conf <<EOF
touch $agentServerInfoFile
cat >"$agentServerInfoFile" <<EOF
serverName: ${city}-${hostArch}-${machineNumber}
serverIpPbV4: $public_ipv4
serverIpInV4: $inner_ipv4
serverIpPbV6: $public_ipv6
serverIpInV6: $inner_ipv6
location: "$city $region $country"
provider: $org
managePort: $managePort
cpuCore: "$cores @ $freq MHz"
cpuBrand: "$cpuName"
memoryTotal: $tram
diskTotal: $disk_total_size
diskUsage: $disk_used_size
archInfo: "$arch ($lbit Bit)"
osInfo: "$opsy"
osKernelInfo: $kern
tcpControl: $tcpctrl
virtualization: $virt
ioSpeed: "$ioavg MB/s"
machineId: $(cat /etc/machine-id)
agentVersion: $(ls /octopus-agent | grep "octopus-agent_" | cut -d "_" -f4-)
EOF

echo "agent server info has collect complete!"
echo "file is => $agentServerInfoFile"