Primerool/Run_primerool.bat at main · KowalskiBio/Primerool · GitHub

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@echo off
chcp 65001 >nul 2>&1
setlocal enabledelayedexpansion

:: Keep window open on any unexpected exit
if "%~1"=="--child" goto :main
cmd /k ""%~f0" --child"
exit /b

:main

:: Get the directory where this script is located
cd /d "%~dp0"

echo ============================================
echo  Starting Primerool
echo ============================================
echo.

:: -----------------------------------------------
:: 1. Check / install Python
:: -----------------------------------------------
set "PYTHON_CMD="
set "PY_CHECK="
for /f "delims=" %%i in ('python -c "import venv; print('OK')" 2^>nul') do set "PY_CHECK=%%i"
if "!PY_CHECK!"=="OK" set "PYTHON_CMD=python"
if not defined PYTHON_CMD (
    set "PY_CHECK="
    for /f "delims=" %%i in ('py -c "import venv; print('OK')" 2^>nul') do set "PY_CHECK=%%i"
    if "!PY_CHECK!"=="OK" set "PYTHON_CMD=py"
)

if not defined PYTHON_CMD (
    echo  Python is not installed on this computer.
    echo  Primerool requires Python and a few libraries to run.
    echo.
    echo  The following will be downloaded and installed automatically:
    echo    - Python 3.12        (~25 MB download, ~100 MB installed)
    echo    - Flask              (~2 MB)
    echo    - Primer3            (~5 MB)
    echo    - Requests           (~1 MB)
    echo.
    echo  Make sure you are connected to the internet.
    echo.
    echo [INFO] Commencing automatic Python 3.12 installation...
    echo.

    :: Try winget first (Windows 10 1709+ / Windows 11)
    winget --version >nul 2>&1
    if %errorlevel% equ 0 (
        echo [INFO] Installing Python via winget...
        winget install -e --id Python.Python.3.12 --accept-source-agreements --accept-package-agreements
    ) else (
        :: Fallback: use the PowerShell helper script (avoids all quoting issues)
        echo [INFO] winget not available. Running PowerShell installer script...
        powershell -NoProfile -ExecutionPolicy Bypass -File "%~dp0install_python.ps1"
        if %errorlevel% neq 0 (
            echo [ERROR] Python installation failed. Please install manually from:
            echo         https://www.python.org/downloads/windows/
            echo         Make sure to check "Add Python to PATH" during installation.
            pause
            exit /b 1
        )
    )

    :: Find python.exe directly — check all common install locations
    set "PYTHON_EXE="
    if exist "%LOCALAPPDATA%\Programs\Python\Python312\python.exe" set "PYTHON_EXE=%LOCALAPPDATA%\Programs\Python\Python312\python.exe"
    if exist "%LOCALAPPDATA%\Programs\Python\Python311\python.exe" set "PYTHON_EXE=%LOCALAPPDATA%\Programs\Python\Python311\python.exe"
    if exist "%LOCALAPPDATA%\Programs\Python\Python310\python.exe" set "PYTHON_EXE=%LOCALAPPDATA%\Programs\Python\Python310\python.exe"
    if exist "%PROGRAMFILES%\Python312\python.exe" set "PYTHON_EXE=%PROGRAMFILES%\Python312\python.exe"
    if exist "%PROGRAMFILES%\Python311\python.exe" set "PYTHON_EXE=%PROGRAMFILES%\Python311\python.exe"
    if exist "%PROGRAMFILES%\Python310\python.exe" set "PYTHON_EXE=%PROGRAMFILES%\Python310\python.exe"

    if defined PYTHON_EXE (
        echo [OK] Found Python at: %PYTHON_EXE%
        :: Add its folder and Scripts subfolder to PATH for this session
        for %%F in ("!PYTHON_EXE!") do set "PATH=%%~dpF;%%~dpFScripts;!PATH!"
        set "PYTHON_CMD=python"
    ) else (
        echo.
        echo  ============================================
        echo   Python was installed successfully!
        echo  ============================================
        echo.
        echo   Please close this window and open
        echo   run_primerool.bat again to launch Primerool.
        echo.
        pause
        exit /b 0
    )
)

for /f "tokens=*" %%v in ('!PYTHON_CMD! --version 2^>^&1') do echo [OK] Found %%v
echo.

:: -----------------------------------------------
:: 2. Create virtual environment
:: -----------------------------------------------
if not exist "venv" (
    echo [INFO] Creating virtual environment...
    !PYTHON_CMD! -m venv venv
    if %errorlevel% neq 0 (
        echo [ERROR] Failed to create virtual environment.
        pause
        exit /b 1
    )
    echo [OK] Virtual environment created.
    echo.
)

:: -----------------------------------------------
:: 3. Activate virtual environment
:: -----------------------------------------------
call venv\Scripts\activate.bat
if %errorlevel% neq 0 (
    echo [ERROR] Failed to activate virtual environment.
    pause
    exit /b 1
)

:: -----------------------------------------------
:: 4. Install / update dependencies
:: -----------------------------------------------
if exist "requirements.txt" (
    echo [INFO] Installing dependencies...
    pip install -r requirements.txt
    if %errorlevel% neq 0 (
        echo [ERROR] pip install failed. Check your internet connection.
        pause
        exit /b 1
    )
    echo [OK] Dependencies ready.
    echo.
)

:: -----------------------------------------------
:: 5. Launch app
:: -----------------------------------------------
echo [INFO] Booting native desktop window...
echo [INFO] Press Ctrl+C in this terminal to force quit.
echo.

:: Open browser after a short delay
:: (Browser opening removed for desktop app mode)

!PYTHON_CMD! src\app.py
if %errorlevel% neq 0 (
    echo.
    echo [ERROR] The application exited with an error (code %errorlevel%).
    echo         See the output above for details.
)

pause