@echo off
setlocal EnableDelayedExpansion
title WhatsApp Sender - Bulletproof Auto Installer
color 0A

:: ================================================================
:: STEP 0: Pre-flight Checks (Admin & Internet)
:: ================================================================
echo.
echo =============================================================
echo   WhatsApp Sender ^| Full Auto Installer
echo =============================================================
echo.

:: Check Admin Rights
net session >nul 2>&1
if %errorLevel% neq 0 (
    echo [!] Administrative privileges required. Restarting as Admin...
    powershell -Command "Start-Process '%~dpnx0' -Verb RunAs"
    exit /b
)

:: Check Internet Connection
echo Checking internet connection...
ping 8.8.8.8 -n 1 -w 2000 >nul
if %errorLevel% neq 0 (
    color 0C
    echo [ERROR] No internet connection detected. Please check network.
    pause
    exit /b 1
)
echo [OK] Internet connection verified.

set "BASE_DIR=C:\whatsapp-sender"
set "SETUP_DIR=%BASE_DIR%\MsSetup"
set "NODE_MSI=%SETUP_DIR%\node-v24.16.0-x64.msi"
set "PS1_SCRIPT=%~dp0InstallNJs.ps1"
set "PDF_URL=https://8446606380.com/share/whatsapp-sender/sample.pdf"
set "PDF_DEST=%BASE_DIR%\sample.pdf"

:: ================================================================
:: STEP 1: Directory Setup
:: ================================================================
echo.
echo ---------------------------------------------------------------
echo [STEP 1/5] Preparing directories...
echo ---------------------------------------------------------------
if not exist "%BASE_DIR%" mkdir "%BASE_DIR%"
if not exist "%SETUP_DIR%" mkdir "%SETUP_DIR%"
echo [OK] Directories ready at %BASE_DIR%

:: ================================================================
:: STEP 2: Execute Downloader
:: ================================================================
echo.
echo ---------------------------------------------------------------
echo [STEP 2/5] Downloading Node.js framework...
echo ---------------------------------------------------------------

if not exist "%PS1_SCRIPT%" (
    color 0C
    echo [ERROR] InstallNJs.ps1 not found in the current directory!
    echo Please ensure both files are in the same folder.
    pause
    exit /b 1
)

powershell.exe -NoProfile -ExecutionPolicy Bypass -File "%PS1_SCRIPT%"
if %ERRORLEVEL% NEQ 0 (
    color 0C
    echo [ERROR] Download process failed. Check the log in %SETUP_DIR%.
    pause
    exit /b 1
)

:: ================================================================
:: STEP 3: Install Node.js
:: ================================================================
echo.
echo ---------------------------------------------------------------
echo [STEP 3/5] Installing Node.js (Silent)...
echo ---------------------------------------------------------------
msiexec.exe /i "%NODE_MSI%" /qb! REBOOT=ReallySuppress

if %ERRORLEVEL% NEQ 0 (
    color 0C
    echo [ERROR] Installer exited with code %ERRORLEVEL%.
    pause
    exit /b 1
)

echo [OK] Installation applied. Refreshing system environment...
:: Force refresh of PATH variable for current session
for /f "usebackq skip=2 tokens=3*" %%A in (`reg query "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v PATH 2^>nul`) do set "SYS_PATH=%%A %%B"
set "PATH=C:\Program Files\nodejs;%SYS_PATH%;%PATH%"

node --version >nul 2>&1
if %ERRORLEVEL% NEQ 0 (
    color 0C
    echo [ERROR] Node.js is not responding. System reboot may be required.
    pause
    exit /b 1
)

echo [OK] Node Environment Active.
node --version
call npm --version

:: ================================================================
:: STEP 4: Project Initialization & NPM (Sequential List)
:: ================================================================
echo.
echo ---------------------------------------------------------------
echo [STEP 4/5] Setting up WhatsApp Client packages...
echo ---------------------------------------------------------------
cd /d "%BASE_DIR%"

echo ^> Initializing npm...
call npm init -y

echo.
echo ^> Installing whatsapp-web.js...
call npm install whatsapp-web.js

echo.
echo ^> Installing qrcode...
call npm install qrcode

echo.
echo ^> Installing puppeteer...
call npm install puppeteer

echo.
echo ^> Installing open...
call npm install open

echo.
echo ^> Installing qrcode-terminal...
call npm install qrcode-terminal

echo.
echo ^> Generating Installation List...
call npm list

:: ================================================================
:: STEP 5: Download PDF File
:: ================================================================
echo.
echo ---------------------------------------------------------------
echo [STEP 5/5] Downloading PDF Document...
echo ---------------------------------------------------------------
echo ^> Fetching %PDF_URL% ...

powershell -NoProfile -Command "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; try { Invoke-WebRequest -Uri '%PDF_URL%' -OutFile '%PDF_DEST%' -UseBasicParsing; Write-Host '  [OK] PDF successfully downloaded to %PDF_DEST%' -ForegroundColor Green } catch { Write-Host '  [ERROR] Failed to download PDF: $_' -ForegroundColor Red; exit 1 }"

if %ERRORLEVEL% NEQ 0 (
    color 0C
    echo [ERROR] PDF Download failed. Check network or URL validity.
    pause
    exit /b 1
)

:: ================================================================
:: FINISH
:: ================================================================
echo.
echo =============================================================
echo   ALL DONE - Client environment successfully configured!
echo =============================================================
echo   Path : %BASE_DIR%
echo   PDF  : %PDF_DEST%
echo =============================================================
echo.

echo Launching A01.js ...
start "WhatsApp Sender" cmd.exe /k "cd /d "%BASE_DIR%" && node A01.js "918446606380" "C:\whatsapp-sender\sample.pdf" """

pause