@echo off
title SPipe Launcher

echo ========================================================
echo               SPipe Local WebApp Launcher
echo ========================================================
echo.

:: 1. Working directory and paths
set "ROOT_DIR=%~dp0"
set "PYTHON_EXE=%ROOT_DIR%.venv\Scripts\python.exe"

cd /d "%ROOT_DIR%"
echo [1/5] Working directory: %CD%

:: 2. Check Node / npm
where npm >nul 2>&1
if errorlevel 1 goto ERR_NO_NPM
echo [2/5] Node and npm verified.

:: 3. Check Python executable
if not exist "%PYTHON_EXE%" goto ERR_NO_VENV
echo [3/5] Python virtual environment verified.

:: 4. Check if ports are already busy
set PORT8000_BUSY=0
set PORT5173_BUSY=0

netstat -ano | findstr /R /C:":8000 .*LISTENING" >nul 2>&1
if not errorlevel 1 set PORT8000_BUSY=1

netstat -ano | findstr /R /C:":5173 .*LISTENING" >nul 2>&1
if not errorlevel 1 set PORT5173_BUSY=1

if "%PORT8000_BUSY%"=="1" if "%PORT5173_BUSY%"=="1" goto ALREADY_RUNNING

:: 5. Launch Backend and Frontend
echo [4/5] Launching SPipe servers...

if "%PORT8000_BUSY%"=="0" (
    echo       - Starting SPipe API Backend on Port 8000
    start "SPipe API" cmd /k "cd /d "%ROOT_DIR%" && "%PYTHON_EXE%" -m uvicorn backend.main:app --host 127.0.0.1 --port 8000"
) else (
    echo       - SPipe API Backend is already active on Port 8000
)

if "%PORT5173_BUSY%"=="0" (
    echo       - Starting SPipe Web Frontend on Port 5173
    start "SPipe Web" cmd /k "cd /d "%ROOT_DIR%" && npm run dev"
) else (
    echo       - SPipe Web Frontend is already active on Port 5173
)

:: 6. Healthcheck wait loop: Wait until both ports are listening
echo [5/5] Waiting for both servers to be ready...
set WAIT_COUNT=0

:WAIT_LOOP
ping 127.0.0.1 -n 2 >nul
netstat -ano | findstr /R /C:":8000 .*LISTENING" >nul 2>&1
if errorlevel 1 goto RETRY_WAIT

netstat -ano | findstr /R /C:":5173 .*LISTENING" >nul 2>&1
if errorlevel 1 goto RETRY_WAIT

goto READY_LAUNCH

:RETRY_WAIT
set /a WAIT_COUNT+=1
if %WAIT_COUNT% lss 15 (
    echo       - Initializing servers... [%WAIT_COUNT%/15]
    goto WAIT_LOOP
)

:READY_LAUNCH
echo.
echo [DONE] Both servers are online and ready!
echo [DONE] Opening browser: http://127.0.0.1:5173
start http://127.0.0.1:5173

echo.
echo ========================================================
echo  * Backend API  : http://127.0.0.1:8000
echo  * Web Frontend : http://127.0.0.1:5173
echo.
echo  * To stop servers, double-click: stop-spipe.bat
echo ========================================================
echo.
pause
exit /b 0

:ALREADY_RUNNING
echo [NOTICE] Both Backend and Frontend are already running.
echo [NOTICE] Opening browser: http://127.0.0.1:5173
start http://127.0.0.1:5173
echo.
pause
exit /b 0

:ERR_NO_NPM
echo [ERROR] npm was not found in PATH.
echo Please install Node.js LTS from https://nodejs.org
echo.
pause
exit /b 1

:ERR_NO_VENV
echo [ERROR] %PYTHON_EXE% was not found.
echo Please create .venv and install requirements first.
echo.
pause
exit /b 1