#!/usr/bin/env bash

# WIKI: https://httpsok.com/doc/
# This script only supports bash, do not support posix sh.
# If you have the problem like Syntax error: "(" unexpected (expecting "fi"),
# Try to run "bash -version" to check the version.
# Try to visit WIKI to find a solution.

################################################
NGINX_BIN=nginx
# NGINX_CONFIG=/etc/nginx/nginx.conf
# NGINX_CONFIG_HOME=/etc/nginx
##################################################

VER=1.18.2

PROJECT_NAME="httpsok"
PROJECT_ENTRY="httpsok.sh"

PROJECT_HOME="$HOME/.httpsok"
PROJECT_BACKUPS="$HOME/.httpsok/backups"
PROJECT_ENTRY_BIN="$PROJECT_HOME/$PROJECT_ENTRY"

PROJECT_TOKEN_FILE="$PROJECT_HOME/token"
HTTPSOK_UUID_FILE="$PROJECT_HOME/uuid"
PROJECT_LOG_FILE="$PROJECT_HOME/$PROJECT_NAME.log"
HTTPSOK_TOKEN=""
HTTPSOK_UUID=""

HTTPSOK_HOME_URL="https://httpsok.com/"
BASE_API_URL="https://api.httpsok.com/v1/nginx"
SCRIPT_URL="https://get.httpsok.com/"

latest_code=""
preparse=""
OS=""
NGINX_VERSION=""
MODE="normal"


_upper_case() {
  tr '[a-z]' '[A-Z]'
}

_lower_case() {
  tr '[A-Z]' '[a-z]'
}

_startswith() {
  _str="$1"
  _sub="$2"
  echo "$_str" | grep -- "^$_sub" >/dev/null 2>&1
}

_endswith() {
  _str="$1"
  _sub="$2"
  echo "$_str" | grep -- "$_sub\$" >/dev/null 2>&1
}

_contains() {
  _str="$1"
  _sub="$2"
  echo "$_str" | grep -- "$_sub" >/dev/null 2>&1
}

_time() {
  date -u "+%s"
}

_math() {
  _m_opts="$@"
  printf "%s" "$(($_m_opts))"
}

_err() {
  echo -e "\033[31m$(date +"%F %T") $@\033[0m"  1>&2
}

_info() {
  echo -e "$(date +"%F %T") $@"  1>&2
}

_suc() {
  echo -e "\033[32m$(date +"%F %T") $@\033[0m"  1>&2
}

_random_md5() {
  head -c 32 /dev/urandom | md5sum | awk '{print $1}'
}

TRACE_ID=$(_random_md5)

_exists() {
  cmd="$1"
  if [ -z "$cmd" ]; then
    _usage "Usage: _exists cmd"
    return 1
  fi

  if eval type type >/dev/null 2>&1; then
    eval type "$cmd" >/dev/null 2>&1
  elif command >/dev/null 2>&1; then
    command -v "$cmd" >/dev/null 2>&1
  else
    which "$cmd" >/dev/null 2>&1
  fi
  ret="$?"
  return $ret
}

showWelcome() {
  echo
  echo -e "\033[1;36mHttpsok make SSL easy.     $HTTPSOK_HOME_URL \033[0m"
  echo -e "\033[1;36mversion: $VER\033[0m"
  echo -e "\033[1;36mTraceID: $TRACE_ID\033[0m"
  echo
}

_mkdirs() {
  _dir="$1"
  if [ ! "$_dir" = "" ]; then
    if [ ! -d "$_dir" ]; then
      mkdir -p "$_dir" && _suc "Create directory $_dir success."
    fi
  fi
}

_initpath() {
  _mkdirs "$PROJECT_HOME"
  _mkdirs "$PROJECT_BACKUPS"
}

_no_nginx_here(){
  echo
  _err "Can’t detected nginx\n"
  _err "Please confirm that nginx has been successfully installed on your system"
  _detected_is_root_run
  echo
  echo
  exit
}

_detected_is_root_run(){
  YELLOW='\033[1;33m'
  NC='\033[0m' # No Color
  if [ "$(id -u)" -ne 0 ]; then
      echo -e "${YELLOW}Detected non-root user running, it's recommended to run as root user.${NC}\n"
  fi
}

_init_params() {

  if [ "$OS" != "" ]; then
      return 0
  fi

  if [ -f /etc/os-release ]; then
      OS=$(grep 'PRETTY_NAME' /etc/os-release | awk -F '=' '{print $2}' | tr -d '"' | head -n 1)
  elif [ -f /etc/redhat-release ]; then
      OS=$(cat /etc/redhat-release)
  elif [ -f /etc/alpine-release ]; then
      OS="alpine"
  else
      _err "Unsupported operating system"
      exit 1
  fi

#  NGINX_BIN=nginx
  $NGINX_BIN -V > /dev/null 2>&1
  if [ $? -ne 0 ]; then
      echo "no nginx in PATH, find the nginx"
      pid=$(ps -e | grep nginx | grep -v 'grep' | head -n 1 | awk '{print $1}')
      if [ -n "$pid" ]; then
          NGINX_BIN=$(readlink -f /proc/"$pid"/exe)
          # echo "NGINX_BIN=$NGINX_BIN"
          # again to verify
          $NGINX_BIN -V > /dev/null 2>&1
          if [ $? -ne 0 ]; then
            _no_nginx_here
          else
            echo "Nginx executable path: $NGINX_BIN"
          fi
      else
        _no_nginx_here
      fi
  fi

  NGINX_VERSION=$($NGINX_BIN -v 2>&1 | awk -F ': ' '{print $2}' | head -n 1 | head -c 20)

  # user can setting
  if [ -z "$NGINX_CONFIG" ]; then
    # Use a running nginx first
    NGINX_CONFIG=$(ps -eo pid,cmd | grep nginx | grep master | grep '\-c' | awk -F '-c' '{print $2}' | sed 's/ //g')
  fi

  # fix the NGINX_CONFIG equals nginx.conf bug
  if [ -z "$NGINX_CONFIG"  ] || [ "$NGINX_CONFIG" = "nginx.conf" ]; then
    NGINX_CONFIG=$($NGINX_BIN -t 2>&1 | grep 'configuration' | head -n 1 | awk -F 'file' '{print $2}' | awk '{print $1}' )
  fi

  if [ -z "$NGINX_CONFIG_HOME" ]; then
    NGINX_CONFIG_HOME=$(dirname "$NGINX_CONFIG")
  fi

  _init_httpsok_params

  _info "os-name: $OS"
  _info "version: $NGINX_VERSION"
  _info "nginx-config: $NGINX_CONFIG"
  _info "nginx-config-home: $NGINX_CONFIG_HOME"
  _info "nginx-bin: $NGINX_BIN"
  _info "httpsok-uuid: $HTTPSOK_UUID"


  if [ "$NGINX_CONFIG_HOME" = "." ]; then
    echo ""
    echo ""
    echo -e "\033[31m获取nginx配置文件失败, 请您根据实际情况，手动设置\033[0m"
    echo ""
    echo -e "\033[1;36m修改文件 $PROJECT_ENTRY_BIN\033[0m"
    echo ""
    echo "################################################"
    echo "# 配置示例 "
    echo "NGINX_CONFIG=/etc/nginx/nginx.conf"
    echo "NGINX_CONFIG_HOME=/etc/nginx"
    echo "##################################################"
    echo ""
    exit 0
  fi

  showWelcome
}

_init_httpsok_params() {

  if [ "$HTTPSOK_UUID" != "" ]; then
    return 0
  fi

  if [ -f "$HTTPSOK_UUID_FILE" ]; then
    HTTPSOK_UUID=$(cat "$HTTPSOK_UUID_FILE")
  fi

  if [ "$HTTPSOK_UUID" != "" ]; then
    # _info "load HTTPSOK_UUID from $HTTPSOK_UUID_FILE: $HTTPSOK_UUID"
    return 0
  fi

  _initpath

  if [ -f "/sys/class/dmi/id/product_uuid" ]; then
    HTTPSOK_UUID=$(cat /sys/class/dmi/id/product_uuid)
    if [ "$HTTPSOK_UUID" != "" ]; then
      echo "$HTTPSOK_UUID" > "$HTTPSOK_UUID_FILE"
      # _info "save HTTPSOK_UUID from product_uuid to $HTTPSOK_UUID_FILE: $HTTPSOK_UUID"
      return 0
    fi
  fi

  HTTPSOK_UUID=$(_random_md5)
  echo "$HTTPSOK_UUID" > "$HTTPSOK_UUID_FILE"
  # _info "save HTTPSOK_UUID to $HTTPSOK_UUID_FILE: $HTTPSOK_UUID"

}


_inithttp() {

  _init_httpsok_params

  _H0="Content-Type: text/plain"
  _H1="httpsok-token: $HTTPSOK_TOKEN"
  _H2="httpsok-version: $VER"
  _H3="os-name: $OS"
  _H4="nginx-version: $NGINX_VERSION"
  _H5="nginx-config-home: $NGINX_CONFIG_HOME"
  _H6="nginx-config: $NGINX_CONFIG"
  _H7="trace-id: $TRACE_ID"
  _H8="mode: $MODE"
  _H9="httpsok-uuid: $HTTPSOK_UUID"
}

_post() {
  _inithttp
  url="${BASE_API_URL}$1"
  body="$2"
  curl -s -X POST -H "$_H0" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" -H "$_H6" -H "$_H7" -H "$_H8" -H "$_H9" --data-binary "$body" "$url"
}

_post2() {
  _inithttp
  url="${BASE_API_URL}$1"
  fiename="$2"
  curl -s -X POST -H "$_H0" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" -H "$_H6" -H "$_H7" -H "$_H8" -H "$_H9" --data-binary "@$fiename" "$url"
}

_get() {
  _inithttp
  url="${BASE_API_URL}$1"
  curl -s -H "$_H0" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" -H "$_H6" -H "$_H7" -H "$_H8" -H "$_H9" "$url"
}

_upload() {
  _inithttp
  url="${BASE_API_URL}/upload?code=$1"
  _F1="cert=@\"$2\""
  _F2="certKey=@\"$3\""
  curl -s -X POST -H "Content-Type: multipart/form-data" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" -H "$_H6" -H "$_H7" -H "$_H8" -H "$_H9" -F $_F1 -F $_F2 "$url" 2>&1
}

_put() {
  _inithttp
  url="${BASE_API_URL}$1"
  body="$2"
  curl -s -X PUT -H "$_H0" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" -H "$_H6" -H "$_H7" -H "$_H8" -H "$_H9" --data-binary "$body" "$url"
}

_remote_log() {
  type="$1"
  code="$2"
  msg="$3"
  _put "/log/$type?code=$code" "$msg"
}

_done() {
  _t=$(_time)
  _get "/done?t=$_t"
}

_remote_uninstall(){
  _load_token
  _t=$(_time)
  _get "/uninstall?t=$_t"
}

_create_file() {
  local _code="$1"
  local file_path="$2"
  if [ ! -e "$file_path" ]; then
    dir_path=$(dirname "$file_path")
    mkdir -p "$dir_path"
    touch "$file_path"
    _suc "$_code" "File created: $file_path"
  else
    # backup the files
    if [ -f "$file_path" ]; then
      _filename=${file_path##*/}
      _date=$(date +"%Y%m%d%H%M%S")
      backup_file_path="$PROJECT_BACKUPS/$_filename.$_date"
      if [ -f "$backup_file_path" ]; then
        _err "$_code" "Backup file already exists: $backup_file_path"
      else
        mv "$file_path" "$backup_file_path"
        _suc "$_code" "Backup the file $file_path to $backup_file_path"
      fi
    fi
  fi
}

_check() {
  depth=$1
  code=$2
  cert_file=$3
  cert_key_file=$4
  url="/check?code=$code"

  if [ $depth -le 0 ]; then
    _err "The maximum number of attempts exceeded"
  else
    resp=$(_get "$url")
    status=$(echo "$resp" | head -n 1)
    case $status in
      "1")
#        _info "$code $cert_file The new certificate has been updated"
        md5_line=$(echo "$resp" | awk 'NR==2')

        cert_file_md5=$(echo $md5_line | awk -F ',' '{print $1}')
        cert_key_file_md5=$(echo $md5_line | awk -F ',' '{print $2}')

        tmp_cert_file="/tmp/$code.cer"
        tmp_cert_key_file="/tmp/$code.key"

        _get "/cert/$code.cer" > "$tmp_cert_file" && _get "/cert/$code.key" > "$tmp_cert_key_file"

        # md5 check
        tmp_cert_md5=$(md5sum "$tmp_cert_file" | awk '{print $1}')
        tmp_cert_key_md5=$(md5sum "$tmp_cert_key_file" | awk '{print $1}')
        if [ "$cert_file_md5" = "$tmp_cert_md5" ] && [ "$cert_key_file_md5" = "$tmp_cert_key_md5" ]; then
          # if local_cert_file not here. need to create the file
          _create_file "$code" "$cert_file" && _create_file "$code" "$cert_key_file"
          mv "$tmp_cert_file" "$cert_file" && mv "$tmp_cert_key_file" "$cert_key_file"
          _suc "$code $cert_file New cert updated(证书更新成功)"
          _remote_log "cert-updated-success" "$code" "New cert updated(证书更新成功)"
          echo "latest_code $code"
        else
          _err "$code $cert_file New cert update failed (md5 not match)"
          _remote_log "cert-updated-failed" "$code" "New cert update failed (md5 not match): cert_file_md5=$cert_file_md5,tmp_cert_md5=$tmp_cert_md5,cert_key_file_md5=$cert_key_file_md5,tmp_cert_key_md5=$tmp_cert_key_md5"
        fi
        ;;
      "2")
        _info "$code $cert_file Processing, please just wait(正在处理中，请稍等)..."
        sleep 10
        _check $((depth - 1)) "$code" "$cert_file" "$cert_key_file"
        ;;
      "3")
        _info "$code $cert_file Cert valid(证书有效)"
        ;;
      "12")
        _err "$code $cert_file DNS CNAME invalid(DNS检测不通过)"
        ;;
      "13")
        _err "$code $cert_file code invalid(非法请求)"
        ;;
      *)
        _err "$code $cert_file $resp"
        ;;
    esac
  fi
}

_save_token() {
  _token="$1"
  _check_token "$_token"
  _initpath
  if [ ! "$_token" = "" ]; then
    echo "$_token" > "$PROJECT_TOKEN_FILE"
    _suc "save token $_token to $PROJECT_TOKEN_FILE"
  fi
}

_load_token() {
  if [ "$HTTPSOK_TOKEN" = "" ]; then
    HTTPSOK_TOKEN=$(cat "$PROJECT_TOKEN_FILE")
  fi
}

_show_token() {
  _load_token
  echo -e "Your token is: \033[1;36m$HTTPSOK_TOKEN\033[0m"
}

_check_token() {
  _token="$1"
  if [ ! "$_token" = "" ]; then
    HTTPSOK_TOKEN="$_token"
  fi
  if [ "$HTTPSOK_TOKEN" = "" ]; then
    _err "httpsok's token can not empty"
    exit 4
  fi
  _init_params
  status=$(_get "/status")
  # _info "status >> $status"
  if [ "$status" != "ok" ]; then
    # echo -e "\033[1;36mTraceID: $TRACE_ID\033[0m"
    _err "Invalid token: \033[1;36m$HTTPSOK_TOKEN\033[0m"
    _info "Please copy your token from '$HTTPSOK_HOME_URL'"
    echo
    _err "$status"
    exit 4
  fi
  return 0
}

# Limit the maximum nesting level
_include_max_calls=20
_include_global_count=0

__process_include() {

  # echo "-_include_global_count: $_include_global_count --------------------------------------------------"
  # echo Recursive call, degree incremented by one
  ((_include_global_count++))

  if [ $_include_global_count -gt $_include_max_calls ]; then
      echo "#######################################################"
      echo "##### warning: Maximum recursion limit reached."
      echo "#######################################################"
      cat /dev/stdin
      return 0
  fi

  tmp=$(cat /dev/stdin | awk -v NGINX_CONFIG=">$NGINX_CONFIG:" -v NGINX_CONFIG_HOME="$NGINX_CONFIG_HOME" '{

      original = $0

      # Remove leading and trailing whitespace characters from each line
      gsub(/^[[:space:]]+|[[:space:]]+$/, "")
      sub(/^[\t ]*|[\t ]*$/,"")

      # Ignore the lines at the beginning of the file
      if ($0 ~ /^>/) {
        print original
        next
      }

      # Determines if it starts with #, and if it does, ignores it
      if ($0 ~ /^#/) {

        # Replace the include in the comment
        # gsub("include", "import")

        print original
        next
      }

      # Determine whether include is included
      if ($0 ~ /^include /) {

        # Ignore mime.types
        if($0 ~ /mime\.types;/){
          print "#import " original
          next
        }

        # print "#import " $2
        print "#import " original

        # system("cat " $2)
        # print ">>  "

        # ls /etc/nginx/conf.d/*.conf | xargs -I {} sed  "s|^|{}:|" {}
        # system("ls " $2 " | xargs -I {} sed  \"s|^|{}:|\" {}")

        # /etc/nginx/conf.d/*.conf;
        # Replace ;
        gsub(/;/, "")

        # /etc/nginx/conf.d/*.conf
        # Resolved to an include file
        # print $2

        # Deal with relative path issues
        if (substr($2, 1, 1) != "/") {
          $2 = NGINX_CONFIG_HOME "/" $2
        }

        # print "# " original

        # The second way
        # find . -maxdepth 1 -print0 | xargs -0 command
        # system("find " $2 " -maxdepth 1 -print0  | xargs  -0 -I {} sed \"s|^|>{}:|\" {}")

        # just backup
        # system("ls -1 " $2 " | xargs -I {} sed \"s|^|>{}:|\" {}")

        # If the last line of the file is not newline, the file will not be parsed correctly
        # system("ls -1 " $2 " 2>/dev/null | xargs -I {} cat {} ")

        # Using sh has security implications deprecated
        # system("ls -1 " $2 " 2>/dev/null | xargs -I {} sh -c \"cat {} && echo\" ")

        #
        # system("ls -1 " $2 " 2>/dev/null | xargs -I {} sed -n \"$p\" {} ")

        # xargs -I {} awk -v FP="{}"  "BEGIN{ print \"# include \" FP } {print} END{print ""} " {}
        #system("ls -1 " $2 " 2>/dev/null | xargs -I {} awk \" {print} END {print \"\" } \" {} ")
        #
        # cmd = "ls -1 " $2 " 2>/dev/null | xargs -I {} awk \" {print} END {print \"\\\"\"\n\"\\\"\" } \" {} "

        # cmd = "ls -1 " $2 " 2>/dev/null | xargs -I {} awk \"BEGIN {print \"\"{}\"\" } {print} END {print \n } \" {} "

        # OK Add a newline character to the end of the file
        # cmd = "ls -1 " $2 " 2>/dev/null | xargs -I {} awk \" {print} END {print \"\\n\" } \" {} "

        # OK Add a newline character to the end of the file
        # cmd = "ls -1 " $2 " 2>/dev/null | xargs -I {} awk '\'' {print} '\'' {} "

        # OK add config file path
        #cmd = "ls -1 " $2 " 2>/dev/null | xargs -I GG awk '\'' BEGIN {print \"#included GG;\" } {print} '\'' GG "
        #cmd = "ls -1 " $2 " 2>/dev/null | xargs -I {} awk '\'' BEGIN {print \"#included {};\" } {print} '\'' {} "

        cmd = "ls -1 " $2 " 2>/dev/null | xargs -I {} awk '\'' BEGIN {print \"#included-begin {};\" } {print}  END{ print \"#included-end {};\"  } '\'' {} "

        # print cmd
        system(cmd)
        print ""

        next
      }

      print original

    }'

  )


  if echo "$tmp" | grep -v '#' | grep -q "include"; then
    # Perform a recursive call
    echo "$tmp" | __process_include
  else
    # End the recursive call
    echo "$tmp"
  fi
}


_preparse() {
  _init_params


  config_text=$($NGINX_BIN -T)
  if [ "$?" != "0" ]; then
    config_text=$(cat $NGINX_CONFIG | __process_include )
  fi
  tmp_name="/tmp/2nLN3ZspTMGifYtO.tmp"
  echo "$config_text" > $tmp_name
  preparse=$(_post2 "/preparse" "$tmp_name")
  rm -rf "$tmp_name" > /dev/null 2>&1
  if [ "$preparse" = "" ]; then
    return 4
  fi
  return 0
}

_upload_certs() {
  while read row
  do
    if [ "$row" = "" ]; then
      continue
    fi
    code=$(echo $row | awk -F ',' '{print $1}')
    cert_file=$(echo $row | awk -F ',' '{print $2}')
    cert_key_file=$(echo $row | awk -F ',' '{print $3}')
    up_status=$(_upload "$code" "$cert_file" "$cert_key_file")
    if [ "$up_status" != "ok" ]; then
      continue
    fi
  done <<EOF
  $preparse
EOF
}

_check_certs() {
  while read row
  do
    if [ "$row" = "" ]; then
      continue
    fi
    code=$(echo $row | awk -F ',' '{print $1}')
    cert_file=$(echo $row | awk -F ',' '{print $2}')
    cert_key_file=$(echo $row | awk -F ',' '{print $3}')
    check_reposne=$(_check 60 "$code" "$cert_file" "$cert_key_file")
    _code=$(echo "$check_reposne" | grep 'latest_code' | awk '{print $2}')
    if [ -n "$_code" ]; then
      latest_code="$_code"
    fi
  done <<EOF
  $preparse
EOF
}


_check_dns() {
  codes=$(echo "$preparse" | awk -F ',' '{print $1}' | tr '\n' ',' )
  url="/checkDns"
  resp=$(_get "$url")
  status=$(echo "$resp" | head -n 1)
  case $status in
    "3")
      _suc "DNS check pass(DNS检查通过)"
      ;;
    "13")
      _err "code invalid"
      ;;
    *)
      _err "$resp"
      ;;
  esac
}

_reload_nginx() {

    if [ "$latest_code" = "" ]; then
      echo
      _info "Nginx reload needless(无需重载)."
      return 0
    fi

    (
      # fixbug: signal process started
      cd $NGINX_CONFIG_HOME

      msg=$($NGINX_BIN -t 2>&1)
      if [ $? != 0 ]; then
        _remote_log "nginx-test-failed" "$latest_code" "$msg"
        echo
        _err "Nginx test failed(测试失败). \n\n$msg"
      else
        msg=$($NGINX_BIN -s reload 2>&1)
        if [ $? -eq 0 ]; then
          _remote_log "nginx-reload-success" "$latest_code" "Nginx reload success(重载成功)."
          echo
          _suc "Nginx reload success(重载成功)."
        else

          # Check if nginx is running
          show_msg=$msg
          pid=$(ps -e | grep nginx | grep -v 'grep' | head -n 1 | awk '{print $1}')
          if [ -z "$pid" ]; then
            msg="Nginx is not started(服务未启动). \n\n$msg"
            show_msg="\033[33mNginx is not started. You can run \"service nginx start\" to start the Nginx(请重启服务). \033[31m\n\n$show_msg"
          fi

          _remote_log "nginx-reload-failed" "$latest_code" "$msg"
          echo
          _err "Nginx reload failed(重载失败). \n\n$show_msg"
        fi
      fi
    )
}

version() {
  echo "$PROJECT_ENTRY v$VER"
}

# Detect profile file if not specified as environment variable
_detect_profile() {
  if [ -n "$PROFILE" -a -f "$PROFILE" ]; then
    echo "$PROFILE"
    return
  fi

  DETECTED_PROFILE=''
  SHELLTYPE="$(basename "/$SHELL")"

  if [ "$SHELLTYPE" = "bash" ]; then
    if [ -f "$HOME/.bashrc" ]; then
      DETECTED_PROFILE="$HOME/.bashrc"
    elif [ -f "$HOME/.bash_profile" ]; then
      DETECTED_PROFILE="$HOME/.bash_profile"
    fi
  elif [ "$SHELLTYPE" = "zsh" ]; then
    DETECTED_PROFILE="$HOME/.zshrc"
  fi

  if [ -z "$DETECTED_PROFILE" ]; then
    if [ -f "$HOME/.profile" ]; then
      DETECTED_PROFILE="$HOME/.profile"
    elif [ -f "$HOME/.bashrc" ]; then
      DETECTED_PROFILE="$HOME/.bashrc"
    elif [ -f "$HOME/.bash_profile" ]; then
      DETECTED_PROFILE="$HOME/.bash_profile"
    elif [ -f "$HOME/.zshrc" ]; then
      DETECTED_PROFILE="$HOME/.zshrc"
    fi
  fi

  if [ -z "$DETECTED_PROFILE" ]; then
    if [ -f "/etc/profile" ]; then
      DETECTED_PROFILE="/etc/profile"
    fi
  fi
  echo "$DETECTED_PROFILE"
}

_tail_c() {
  tail -c "$1" 2>/dev/null || tail -"$1"c
}

_setopt() {
  __conf="$1"
  __opt="$2"
  __sep="$3"
  __val="$4"
  __end="$5"
  if [ -z "$__opt" ]; then
    _usage usage: _setopt '"file"  "opt"  "="  "value" [";"]'
    return
  fi
  if [ ! -f "$__conf" ]; then
    touch "$__conf"
  fi
  if [ -n "$(_tail_c 1 <"$__conf")" ]; then
    echo >>"$__conf"
  fi

  if grep -n "^$__opt$__sep" "$__conf" >/dev/null; then
    if _contains "$__val" "&"; then
      __val="$(echo "$__val" | sed 's/&/\\&/g')"
    fi
    if _contains "$__val" "|"; then
      __val="$(echo "$__val" | sed 's/|/\\|/g')"
    fi
    text="$(cat "$__conf")"
    printf -- "%s\n" "$text" | sed "s|^$__opt$__sep.*$|$__opt$__sep$__val$__end|" >"$__conf"

  elif grep -n "^#$__opt$__sep" "$__conf" >/dev/null; then
    if _contains "$__val" "&"; then
      __val="$(echo "$__val" | sed 's/&/\\&/g')"
    fi
    if _contains "$__val" "|"; then
      __val="$(echo "$__val" | sed 's/|/\\|/g')"
    fi
    text="$(cat "$__conf")"
    printf -- "%s\n" "$text" | sed "s|^#$__opt$__sep.*$|$__opt$__sep$__val$__end|" >"$__conf"

  else
    echo "$__opt$__sep$__val$__end" >>"$__conf"
  fi
}

_install() {
  _info "Installing $PROJECT_NAME."
  _initpath
  curl -s "$SCRIPT_URL" > "$PROJECT_ENTRY_BIN" && chmod +x "$PROJECT_ENTRY_BIN"
  if [ -x "$PROJECT_ENTRY_BIN" ] ; then
    _suc "Install $PROJECT_NAME complete."
  else
    _err "Install $PROJECT_NAME failed."
    exit 4
  fi
  installcronjob
  installAlais
}

installcronjob() {
  _CRONTAB="crontab"

  _t=$(_time)
  random_minute=$(_math $_t % 60)
  random_hour=$(_math $_t % 9 + 9 )  # 9 ~ 17

  if ! _exists "$_CRONTAB" ; then
    _err "$_CRONTAB not exits\ncrontab定时任务不存在，请安装。参考文档：https://httpsok.com/doc/faq/crontab.html \n"
    return 4
  fi

  if ! $_CRONTAB -l | grep "$PROJECT_ENTRY" > /dev/null; then
    _info "Installing cron job."
    if _exists uname && uname -a | grep SunOS >/dev/null; then
      _CRONTAB_STDIN="$_CRONTAB --"
    else
      _CRONTAB_STDIN="$_CRONTAB -"
    fi
    $_CRONTAB -l | {
      cat
      echo "$random_minute $random_hour * * * '$PROJECT_ENTRY_BIN' -m -r >> '$PROJECT_LOG_FILE' 2>&1"
    } | $_CRONTAB_STDIN
    _suc "Install cron job complete."
  fi
  if [ "$?" != "0" ]; then
    _err "Install cron job failed. You can add cronjob by yourself."
    _err "Or you can add cronjob by yourself:"
    _err "$random_minute $random_hour * * * '$PROJECT_ENTRY_BIN' -m -r >> '$PROJECT_LOG_FILE' 2>&1"
    return 1
  fi
}

installAlais() {

  _envfile="$PROJECT_ENTRY_BIN.env"
  echo "alias $PROJECT_ENTRY=\"$PROJECT_ENTRY_BIN\"" > "$_envfile"

  _info "Installing alias"
  _profile="$(_detect_profile)"
  if [ "$_profile" ]; then
    _info "Found profile: $_profile"
    _info "Installing alias to '$_profile'"
    _setopt "$_profile" ". \"$_envfile\""
    _suc "OK, Close and reopen your terminal to start using $PROJECT_NAME"
  else
    _err "No profile is found, you will need to go into $PROJECT_HOME to use $PROJECT_NAME"
  fi
}

_uninstall() {
  _info "Uninstalling httpsok."
  _remote_uninstall
  uninstallcronjob
  _uninstallalias
  if [ -d "$PROJECT_HOME" ]; then
    _info "Removing directory $PROJECT_HOME"
    rm -rf "$PROJECT_HOME"
  fi
  _suc "Uninstall httpsok complete."
  showWelcome
  echo "If your need install httpsok agian. Please see $HTTPSOK_HOME_URL .

curl -s $SCRIPT_URL | bash -s 'your token'

"
}

_uninstallalias() {
  _envfile="$PROJECT_ENTRY_BIN.env"
  _profile="$(_detect_profile)"
  if [ "$_profile" ]; then
    _info "Uninstalling alias from: '$_profile'"
    text="$(cat "$_profile")"
    echo "$text" | sed "s|^.*\"$_envfile\"$||" >"$_profile"
  fi
}

uninstallcronjob() {
  _CRONTAB="crontab"
  if ! _exists "$_CRONTAB" ; then
    _err "$_CRONTAB not exits"
    return 4
  fi
  cr="$($_CRONTAB -l | grep "$PROJECT_ENTRY")"
  if [ "$cr" ]; then
    _info "Removing cron job"
    if _exists uname && uname -a | grep SunOS >/dev/null; then
      $_CRONTAB -l | sed "/$PROJECT_ENTRY/d" | $_CRONTAB --
    else
      $_CRONTAB -l | sed "/$PROJECT_ENTRY/d" | $_CRONTAB -
    fi
    _suc "Remove cron job complete."
  fi
}

_run() {
  _load_token
  _check_token
  if ! _preparse ; then
    _err "No SSL certificate was detected(未检测到SSL证书).\n "
    _info "Please refer to resolve the issue(查看文档，解决此问题). https://httpsok.com/doc/faq/nossl.html "
    echo ""
    return 4
  fi
  _info "Checking SSL certificate, please wait a moment(证书检测中请稍等...)."
  echo
  _upload_certs
  _check_dns
  _check_certs
  _reload_nginx
  _done
  echo ""
}

_process() {
  while [ ${#} -gt 0 ]; do
    case "${1}" in
      --help | -h)
        show_help
        return
        ;;
      --version | -v)
        version
        return
        ;;
      --run | -r)
        _run
        ;;
      --setup | -s)
        _save_token "$2"
        _install
        _run
        return
        ;;
      --token | -t)
        if [ "$2" ]; then
          _save_token "$2"
        else
          _show_token
        fi
        return
        ;;
      --mode | -m)
        MODE="crontab"
        ;;
      --install | -i)
        _install
        return
        ;;
      --uninstall | -u)
        _uninstall
        return
        ;;
      *)
        echo "Unknown parameter : $1 $2"
        return 1
        ;;
    esac
    shift 1
  done
}


show_help() {
  echo "Usage: $PROJECT_ENTRY <command> ... [parameters ...]
Commands:
  -h, --help               Show this help message.
  -v, --version            Show version info.
  -r, --run                Run the $PROJECT_NAME
  -s, --setup              Install and run (Recommend first time use it).
  -t, --token              Set or show the token.
  -m, --mode               Mode of normal or crontab.
  -i, --install            Install $PROJECT_NAME to your system.
  -u, --uninstall          Uninstall $PROJECT_NAME in your system.
"
  showWelcome
}

main() {
  [ -z "$1" ] && show_help && return
  if _startswith "$1" '-'; then _process "$@"; else _process --setup "$@"; fi
}

main "$@"