#!/bin/bash
action=$1
target=$2

DE_BASE=/opt
DE_RUNNING_BASE=${DE_BASE}/dataease2.0
need_init_apisix=false
compose_files="-f docker-compose.yml"
compose_cmd="docker-compose"
server_url=""
current_version=""
latest_version=""

set -a
source ${DE_RUNNING_BASE}/.env
set +a
export COMPOSE_HTTP_TIMEOUT=180

docker-compose version >/dev/null 2>&1
if [ $? -ne 0 ]; then
   docker compose version >/dev/null 2>&1
   if [ $? -ne 0 ]; then
      compose_cmd="docker compose"
   fi
fi

if [[ ! ${DE_EXTERNAL_MYSQL} ]] || [ "${DE_EXTERNAL_MYSQL}" = "false" ]; then
  compose_files="${compose_files} -f docker-compose-mysql.yml"
fi

function usage() {
   echo "DATAEASE 控制脚本"
   echo
   echo "Usage: "
   echo "  ./dectl [COMMAND] [ARGS...]"
   echo "  ./dectl --help"
   echo
   echo "Commands: "
   echo "  status                查看 DATAEASE 服务运行状态"
   echo "  start                 启动 DATAEASE 服务"
   echo "  stop                  停止 DATAEASE 服务"
   echo "  restart               重启 DATAEASE 服务"
   echo "  reload                重新加载 DATAEASE 服务"
   echo "  upgrade               升级 DATAEASE 服务"
   echo "  backup                备份 DATAEASE 服务"
   echo "  restore xxx.tar.gz    还原 DATAEASE 服务"
   echo "  clear-images          清理 DATAEASE 旧版本的相关镜像"
   echo "  version               查看 DATAEASE 版本"
}
function _generate_compose_file_args() {
   if [[ $DE_INSTALL_MODE != "community" ]];then
      compose_files="${compose_files} -f docker-compose-apisix.yml"
      if [[ -f $DE_RUNNING_BASE/docker-compose-task.yml ]];then
         compose_files="${compose_files} -f docker-compose-task.yml"
      fi
   fi
}
function _check_apisix_init() {
   if [[ $DE_INSTALL_MODE != "community" ]];then
      _prepare_apisix
   fi
}
function _prepare_apisix() {
   if [[ -z $DE_APISIX_KEY ]];then
      need_init_apisix=true
      DE_APISIX_KEY=$(uuidgen | sed 's/-//g')
      export DE_APISIX_KEY=$DE_APISIX_KEY
      cd $DE_RUNNING_BASE
      env | grep DE_ >.env
      sed -i -e "s/DE_APISIX_KEY/${DE_APISIX_KEY}/g" $DE_RUNNING_BASE/apisix/apisix_conf/config.yaml
      sed -i -e "s/DE_APISIX_KEY/${DE_APISIX_KEY}/g" $DE_RUNNING_BASE/conf/application.yml
   fi
}
function _init_apisix() {
   DE_APISIX_KEY=$DE_APISIX_KEY sh $DE_RUNNING_BASE/bin/apisix/init.sh
}

function _healthcheck() {
   echo
   container_name=$(grep "container_name" $DE_RUNNING_BASE/docker-compose.yml | awk -F': ' '{print $2}')
   sleep 1
   if [ -z $(docker ps --filter "name=$container_name" -q) ];then
      echo "未找到容器 $container_name。"
      exit 1
   fi

   for b in {1..90}
   do
      sleep 1
      read status healthy<<<$(docker inspect $container_name --format '{{.State.Status}} {{.State.Health.Status}}')
      if [[ "$healthy" == "starting" ]];then
         printf "\rDataEase 服务状态 : 正在启动 ... %3ds" $b
      elif [[ "$status" == "running" ]] && [[ "$healthy" == "healthy" ]];then
         printf "\rDataEase 服务状态 : 正常运行          "
         echo
         return;
      else
         echo
         echo -e "DataEase 服务状态 : \033[31m无法访问\033[0m"
         exit 1
      fi
   done
   echo
   echo "【警告】服务在等待时间内未完全启动！请稍后使用 dectl status 检查服务运行状况。"
   echo
}
function _get_current_version() {
   de_current_version=$(grep "^    image:.*dataease:" ${DE_RUNNING_BASE}/docker-compose.yml | awk -F'dataease:' '{print $2}')
   if test -z $de_current_version; then
      echo "获取当前版本失败，请检查当前版本是否正确"
      exit 1
   fi
   current_version=$de_current_version
}
function _get_available_server() {
   git_urls=('github.com')

   for git_url in ${git_urls[*]}; do      
      echo -ne "检测 ${git_url} ... "
      curl -m 5 -kIs https://${git_url} >/dev/null
      if [ $? != 0 ]; then
         echo "failed"
      else
         echo "ok"
         server_url=${git_url}
         break
      fi
   done
}
function _get_latest_version() {
   rm -f /tmp/de_latest_release

   _get_available_server
   if [[ "x${server_url}" == "x" ]];then
      echo "无法连接版本服务器，请稍候重试"
      exit 1
   fi

   if [[ -x "$(command -v python)" ]]; then
      py_cmd='python'
   elif [[ -x "$(command -v python3)" ]]; then
      py_cmd='python3'
   fi

   $py_cmd - <<EOF
# -*- coding: UTF-8 -*-
import os
import json
import re

latest_release=""
release_pattern="v2\.\d+\.\d+$"

def get_releases(page):
   try:
      releases=os.popen("curl -s https://api.github.com/repos/dataease/dataease/releases?page=%d" % (page)).read()
      releases=[ x["name"] for x in json.loads(releases) if x["prerelease"] == False ]
   except Exception as e:
      print(str(e))
      print("Failed to obtain Release information, please check the network.")
      exit(1)
   else:
      for release in releases:
         if re.search(release_pattern,release) != None:
            return release

page = 1
while (page <= 3):
   latest_release = get_releases(page)
   if (latest_release != "" and latest_release != None):
      break
   page += 1

if latest_release == None or latest_release == "":
   print("Failed to obtain latest version, please try again.")
   exit(1)

# 记录最新版本号
os.popen("echo "+latest_release+" > /tmp/de_latest_release")
EOF

   if [ ! -f /tmp/de_latest_release ]; then
      echo "获取最新版本失败，请检查网络连接是否正常"
      exit 1
   fi
   latest_version=$(cat /tmp/de_latest_release)
}
function status() {
   echo
   echo "DataEase 容器运行状态"
   _generate_compose_file_args
   cd ${DE_RUNNING_BASE}
   ${compose_cmd} ${compose_files} ps

   echo
   docker_root_dir=$(docker info | grep "Docker Root Dir"  | awk -F': ' '{print $2}')
   echo "Docker 目录及文件大小 : "
   du -sh $docker_root_dir
   echo
   echo "Docker 目录所在磁盘使用情况 : "
   df -H $docker_root_dir

   echo
   echo "日志文件大小 : "
   du -Sh ${DE_RUNNING_BASE}/logs/

   echo
   echo "DataEase 运行目录及文件大小 : "
   du -sh ${DE_BASE}
   echo
   echo "DataEase 运行目录使用情况 : "
   df -H ${DE_BASE}

   _healthcheck
}
function start() {
   echo
   _check_apisix_init
   _generate_compose_file_args
   cd ${DE_RUNNING_BASE}
   ${compose_cmd} ${compose_files} up -d
   _healthcheck
   if [ $? -eq 0 ] && [[ $need_init_apisix = true ]]; then
      _init_apisix
   fi
}
function stop() {
   echo
   _generate_compose_file_args
   cd ${DE_RUNNING_BASE}
   ${compose_cmd} ${compose_files} down -v ${target}
}
function restart() {
   stop
   start
}
function reload() {
   start
}
function version() {
   echo
   _get_current_version
   echo "current version is $current_version"
   _get_latest_version
   echo "latest version is $latest_version"
}
function upgrade() {
   version

   if [ "${latest_version}" = "" ]; then
      echo "未获取到最新版本"
      exit 1
   elif [ "${latest_version}" = "${current_version}" ]; then
      echo "最新版本与当前版本一致,退出升级过程"
      exit 0
   else
      if [[ ! "$latest_version" =~ ^v2.* ]];then
         echo "获取到的最新版本与当前版本不匹配，请访问 https://community.fit2cloud.com/#/products/dataease/downloads 下载离线安装包"
         exit 1
      else
         echo "检测到 ${server_url} 上最新版本为 ${latest_version} 即将执行在线升级..."
      fi
   fi
   sleep 2

   echo "开始下载最新版本..."
   echo "使用下载服务器 ${server_url}"
   cd /tmp

   installer_file="dataease-online-installer-${latest_version}-ce.tar.gz"
   download_url="https://${server_url}/dataease/dataease/releases/download/${latest_version}/$installer_file"
   curl -LOk -m 60 -o $installer_file $download_url
   if [ $? -ne 0 ]; then
      echo -e "\e[31m升级失败:连接下载服务器超时！\n可手动下载升级包，然后执行\e[1;33m /bin/bash install.sh \e[0;31m离线升级，也可以重新执行一次 dectl upgrade 命令。\e[0m"
      exit 1
   fi

   if [ ! -f $installer_file ]; then
      echo "下载在线安装包失败，请试试重新执行一次安装命令。"
      exit 1
   fi

   tar zxf $installer_file
   if [ $? != 0 ]; then
      echo "下载在线安装包失败，请试试重新执行一次安装命令。"
      rm -f $installer_file
      exit 1
   fi

   cd ${installer_file%.tar.gz}
   /bin/bash install.sh

   cd ..
   rm -rf /tmp/${installer_file%.*}
}
function clear_images() {
   echo
   for f in $DE_RUNNING_BASE/*.yml; do
      [[ -e "$f" ]] || break
      grep "^    image:.*:" "$f" | uniq | while read -r component_image_defined; do
         component_version=$(echo ${component_image_defined} | awk -F":" '{print $3}' | uniq)
         component_image=$(echo ${component_image_defined} | awk -F'image: ' '{print $2}' | awk -F':' '{print $1}')

         if [[ $(docker images | grep "$component_image" | grep -v " $component_version ") == 0 ]]; then
            echo "$component_image 不存在旧版本镜像"
         else
            echo "存在旧版本镜像 : "
            docker images | grep "$component_image" | grep -v " $component_version "
            echo "清理${component}镜像"
            docker rmi $(docker images | grep "$component_image" | grep -v " $component_version " | awk -F' ' '{print $1":"$2}')
            echo "清理完毕"
         fi
      done
   done

   if [ $(docker images -f dangling=true -q | wc -l) -gt 0 ]; then
      echo "清理虚悬镜像"
      docker rmi $(docker images -f dangling=true -q)
      echo "清理完毕"
   fi
}
function backup() {
   need_stop=0
   if [[ -z $1 ]];then
      echo "如需备份 DataEase 数据，建议您先停止 DataEase 服务，以保证备份数据的完整性。"
      read -r -p "即将备份 DataEase 数据，是否需要停止 DataEase 服务? [Y/n] " input

      case $input in
         [yY][eE][sS]|[yY])
            echo "Yes"
            need_stop=1
            ;;
         [nN][oO]|[nN])
            echo "No"
            ;;
         *)
            echo "无效输入..."
            exit 1
            ;;
      esac
   elif [[ "$1" == "stop" ]];then
      need_stop=1
   fi

   if [[ $need_stop == 1 ]];then
      service dataease stop
   else
      echo "不停服进行备份"
   fi

   backup_file_name=dataease-backup-$(date +%Y%m%d)_$(date +%H%M%S).tar.gz
   tar --exclude=logs/dataease -zcf $backup_file_name -C $DE_RUNNING_BASE .
   if [ $? -ne 0 ]; then
      echo "备份失败"
      exit 1
   else
      echo "备份成功，备份文件 : $backup_file_name"
   fi

   if [[ $need_stop == 1 ]];then
      service dataease start
   fi
}
function restore() {
   if [[ -z $target ]];then
      echo "未指定需要恢复的备份文件！"
      exit 1
   elif [[ -f $target ]];then
      service dataease stop
      if [[ ! -d $DE_RUNNING_BASE ]];then
         mkdir -p $DE_RUNNING_BASE
      fi
      echo "恢复备份 $target"
      tar -zxf $target --directory=$DE_RUNNING_BASE
      service dataease start
   else
      echo "未找到备份文件 $target！"
      exit 1
   fi
}
function main() {
   case "${action}" in
      status)
         status
         ;;
      start)
         start
         ;;
      stop)
         stop
         ;;
      restart)
         restart
         ;;
      reload)
         reload
         ;;
      upgrade)
         upgrade
         ;;
      backup)
         backup $target
         ;;
      restore)
         restore $target
         ;;
      clear-images)
         clear_images
         ;;
      version)
         version
         ;;
      help)
         usage
         ;;
      --help)
         usage
         ;;
      *)
         echo "不支持的参数，请使用 help 或 --help 参数获取帮助"
         ;;
   esac
}
main