@echo off
setlocal EnableExtensions EnableDelayedExpansion
cd /d "%~dp0"

title Kronos AI Analysis

set "PYTHONUTF8=1"
set "PYTHONIOENCODING=utf-8"
set "KRONOS_PRELOAD=1"
set "VENV_DIR=%CD%\venv"
set "VENV_PY=%VENV_DIR%\Scripts\python.exe"

echo ==========================================
echo      KRONOS AI ANALYSIS - STARTUP
echo ==========================================
echo.

echo [1/5] Checking Python 3.11...
py -3.11 -V >nul 2>&1
if errorlevel 1 (
    echo [ERROR] Python 3.11 is required but was not found.
    echo [HINT] Install Python 3.11 and run this script again.
    goto :end
)

echo [2/5] Checking virtual environment...
if exist "%VENV_PY%" (
    "%VENV_PY%" -V >nul 2>&1
    if errorlevel 1 (
        echo [WARN] Existing venv is invalid. Rebuilding a clean one...
        if exist "%CD%\venv_legacy_broken" rmdir /s /q "%CD%\venv_legacy_broken"
        ren "%VENV_DIR%" "venv_legacy_broken"
    )
)

if not exist "%VENV_PY%" (
    echo [INFO] Creating fresh Python 3.11 virtual environment...
    py -3.11 -m venv "%VENV_DIR%"
    if errorlevel 1 (
        echo [ERROR] Failed to create virtual environment.
        goto :end
    )
)

set "REQUESTS_CA_BUNDLE=%VENV_DIR%\Lib\site-packages\pip\_vendor\certifi\cacert.pem"

echo [3/5] Installing or verifying dependencies...
"%VENV_PY%" -m pip install -r requirements.txt
if errorlevel 1 (
    echo [ERROR] Dependency installation failed.
    goto :end
)

echo [4/5] Running Kronos runtime self-check...
"%VENV_PY%" -c "import backend.main as m; assert m.KRONOS_AVAILABLE, 'Kronos import failed'; print('KRONOS_PATH=', m.KRONOS_PATH); print('SYMBOLS=', len(m.SYMBOLS))"
if errorlevel 1 (
    echo [ERROR] Backend self-check failed.
    goto :end
)

echo [5/5] Starting backend...
echo [INFO] Opening http://127.0.0.1:8000
start "" http://127.0.0.1:8000
echo.
echo ------------------------------------------
echo  KEEP THIS WINDOW OPEN WHILE USING THE APP
echo  TO STOP: PRESS CTRL+C
echo ------------------------------------------
echo.
"%VENV_PY%" -m uvicorn backend.main:app --host 127.0.0.1 --port 8000 --reload

:end
pause