@echo off
setlocal EnableExtensions
cd /d "%~dp0.."
set "ROOT=%CD%"
set "WHEELS=%ROOT%\vendor\wheels"
set "GETPIP=%ROOT%\vendor\get-pip.py"
set "LIBUSB=%ROOT%\vendor\libusb-1.0.dll"
set "EMBED_PY=%ROOT%\vendor\python-windows\python.exe"

echo ============================================
echo  JUC500 Windows offline setup
echo ============================================

if not exist "%WHEELS%\pyusb-1.2.1-py3-none-any.whl" (
  echo [!] Missing vendor\wheels. Copy the full source tree including vendor\.
  exit /b 1
)
if not exist "%LIBUSB%" (
  echo [!] Missing vendor\libusb-1.0.dll
  exit /b 1
)

REM Remove Mac-copied broken .venv
if exist "%ROOT%\.venv\bin\python" (
  if not exist "%ROOT%\.venv\Scripts\python.exe" (
    echo [!] Mac .venv detected - removing...
    rmdir /s /q "%ROOT%\.venv"
  )
)

REM Choose bootstrap Python: system first, else vendored embeddable
set "BOOT_PY="
where py >nul 2>&1 && set "BOOT_PY=py -3"
if not defined BOOT_PY (
  where python >nul 2>&1 && set "BOOT_PY=python"
)
if not defined BOOT_PY (
  if exist "%EMBED_PY%" (
    set "BOOT_PY=%EMBED_PY%"
    echo Using vendored Python: vendor\python-windows\python.exe
  )
)
if not defined BOOT_PY (
  echo [!] No Python found. vendor\python-windows is missing.
  exit /b 1
)

echo Bootstrap: %BOOT_PY%

REM Ensure virtualenv module available (embeddable has no stdlib venv)
%BOOT_PY% -c "import virtualenv" 2>nul
if errorlevel 1 (
  echo Installing virtualenv from vendor\wheels ...
  %BOOT_PY% -m pip install --no-index --find-links="%WHEELS%" virtualenv
  if errorlevel 1 (
    if exist "%GETPIP%" (
      %BOOT_PY% "%GETPIP%" --no-index --find-links="%WHEELS%" pip setuptools wheel
      %BOOT_PY% -m pip install --no-index --find-links="%WHEELS%" virtualenv
    )
  )
)

if not exist "%ROOT%\.venv\Scripts\python.exe" (
  echo Creating .venv (fully offline, no pip seed from internet)...
  %BOOT_PY% -m virtualenv --no-periodic-update --no-setuptools --no-pip "%ROOT%\.venv"
  if errorlevel 1 (
    echo [!] virtualenv failed.
    exit /b 1
  )
  "%ROOT%\.venv\Scripts\python.exe" "%GETPIP%" --no-index --find-links="%WHEELS%" pip setuptools wheel packaging
  if errorlevel 1 (
    echo [!] get-pip offline bootstrap failed.
    exit /b 1
  )
  goto install_deps
)

"%ROOT%\.venv\Scripts\python.exe" -c "import usb" 2>nul
if errorlevel 1 (
  echo [!] .venv incomplete — reinstalling dependencies...
  goto install_deps
)
goto copy_libusb

:install_deps
echo Installing dependencies from vendor\wheels (no PyPI)...
"%ROOT%\.venv\Scripts\python.exe" -m pip install --no-index --find-links="%WHEELS%" -U pip setuptools wheel packaging
"%ROOT%\.venv\Scripts\python.exe" -m pip install --no-index --find-links="%WHEELS%" -r "%ROOT%\requirements.txt"
if errorlevel 1 (
  echo [!] requirements install failed.
  exit /b 1
)
"%ROOT%\.venv\Scripts\python.exe" -m pip install --no-index --find-links="%WHEELS%" --no-build-isolation -e "%ROOT%"
if errorlevel 1 (
  echo [!] editable install failed.
  exit /b 1
)

:copy_libusb
copy /Y "%LIBUSB%" "%ROOT%\.venv\Scripts\libusb-1.0.dll" >nul
echo libusb-1.0.dll -^> .venv\Scripts\

echo.
echo Setup done (offline). Run:
echo   .\start.bat
echo   or Git Bash: ./start_win.sh
echo.
endlocal