@echo off
setlocal EnableExtensions DisableDelayedExpansion

if "%~1"=="" goto :usage
if "%~2"=="" goto :usage
if "%~3"=="" goto :usage
if not "%~3"=="CONFIRM_UNINSTALL" goto :refuse

set "SQL_SERVER=%~1"
set "DATABASE=%~2"
set "SQL_FILE=%~dp0..\fortucky-algorithm\src\main\resources\db\sqlserver\uninstall-shadow.sql"

if not exist "%SQL_FILE%" (call :fail "uninstall SQL file is missing" & exit /b 1)
where sqlcmd >nul 2>nul
if errorlevel 1 (call :fail "sqlcmd is not available on PATH" & exit /b 1)

echo WARNING: export all alg.* evidence before uninstalling.
echo The shadow application must be stopped and the stable service restored first.
sqlcmd -S "%SQL_SERVER%" -d "%DATABASE%" -E -b -r1 -i "%SQL_FILE%"
if errorlevel 1 exit /b 1

echo UNINSTALL_OK
exit /b 0

:usage
echo Usage: %~nx0 SQL_SERVER DATABASE CONFIRM_UNINSTALL 1>&2
exit /b 2

:refuse
echo UNINSTALL_REFUSED third argument must be CONFIRM_UNINSTALL 1>&2
exit /b 3

:fail
echo UNINSTALL_FAILED %~1 1>&2
exit /b 1