nginx_mail.bat

@echo off
setlocal

:: ========== CONFIG ==========
rem 
set "NGINX_PATH=%~dp0"
rem 
if "%NGINX_PATH:~-1%"=="\" set "NGINX_PATH=%NGINX_PATH:~0,-1%"
set LOG_FILE=%NGINX_PATH%\monitor_nginx.log
set STATUS_FILE=%NGINX_PATH%\nginx_status.tmp
set URL=http://localhost:80/   

:: Email Settings
set EMAIL_FROM=xxxxxxxxxx@gmail.com
set EMAIL_TO=xxxxxxxxx@gmail.com
set EMAIL_USER=xxxxxxxxxx@gmail.com
set "EMAIL_PASS=xxxxxxxxxxxx"
:: ============================

set "LAST_STATUS=unknown"
if exist "%STATUS_FILE%" (
  set /p LAST_STATUS=<"%STATUS_FILE%"
)

:loop

tasklist | findstr /i nginx.exe >nul
if errorlevel 1 (
  set "CURRENT_STATUS=stopped"
) else (
  :: ตรวจสอบว่าเว็บตอบ status 200 หรือไม่
  for /f %%a in ('powershell -Command "try { $r = Invoke-WebRequest -Uri '%URL%' -UseBasicParsing -TimeoutSec 5; if ($r.StatusCode -eq 200) {Write-Output 200} else {Write-Output $r.StatusCode} } catch { Write-Output 'error' }"') do set "HTTP_CODE=%%a"

  if "%HTTP_CODE%"=="200" (
    set "CURRENT_STATUS=running"
  ) else (
    set "CURRENT_STATUS=unresponsive"
  )
)

set "CURRENT_TIME=[%date% %time%]"

if not "%CURRENT_STATUS%"=="%LAST_STATUS%" (
  echo %CURRENT_TIME% Nginx status : %CURRENT_STATUS% >> %LOG_FILE%
  echo %CURRENT_STATUS% > "%STATUS_FILE%"
  
  if "%CURRENT_STATUS%"=="stopped" (
    echo %CURRENT_TIME% restarting Nginx... >> %LOG_FILE%
    call :sendEmail "🚨 NGINX หยุดทำงาน! กำลังรีสตาร์ท..."
    cd /d %NGINX_PATH%
    start nginx
  ) else if "%CURRENT_STATUS%"=="unresponsive" (
    echo %CURRENT_TIME% Nginx process running but HTTP not 200 >> %LOG_FILE%
    echo %CURRENT_TIME% Attempting to restart Nginx...
    call :sendEmail "⚠️ NGINX ไม่ตอบสนอง! รีสตาร์ท nginx ใหม่..."
    cd /d %NGINX_PATH%
    taskkill /F /IM nginx.exe >nul 2>&1
    start nginx
  ) else (
    echo %CURRENT_TIME% Nginx is running and responsive.
  )
  set LAST_STATUS=%CURRENT_STATUS%
) else (
  echo %CURRENT_TIME% Nginx status: %CURRENT_STATUS% nochange
)

timeout /t 10 >nul
goto loop

:: ========= Function: sendEmail =========
:sendEmail
set MSG=%~1
powershell -Command ^
  "$smtpServer = 'smtp.gmail.com';" ^
  "$smtpFrom = '%EMAIL_FROM%';" ^
  "$smtpTo = '%EMAIL_TO%';" ^
  "$subject = 'แจ้งเตือนจาก NGINX Server (%COMPUTERNAME%)';" ^
  "$body = '%MSG% เวลา: ' + (Get-Date).ToString();" ^
  "$user = '%EMAIL_USER%';" ^
  "$pass = ConvertTo-SecureString '%EMAIL_PASS%' -AsPlainText -Force;" ^
  "$cred = New-Object System.Management.Automation.PSCredential($user, $pass);" ^
  "Send-MailMessage -From $smtpFrom -To $smtpTo -Subject $subject -Body $body -SmtpServer $smtpServer -Port 587 -UseSsl -Credential $cred"
goto :eof