@echo off
rem ===========================================================================
rem Derive the build directory of one build configuration.
rem
rem Internal helper, called by configure.bat / build.bat / clean.bat /
rem build_config.bat as:
rem   call config_paths.bat ^<Debug^|Release^> [AUTO^|ON^|OFF]
rem
rem The mechanical-scanning and phase-scanning variants are merged into one
rem build since V1.5.9, so a configuration is only build type + record mode.
rem The scan mode is a runtime config item (TOML [radar_params] scan_mode).
rem
rem On success the following variables are exported into the caller scope:
rem   BUILD_TYPE   Debug / Release
rem   RECORD_MODE  AUTO / ON / OFF
rem   REC_TAG      REC_AUTO / REC_OFF / REC_ON
rem   BUILD_DIR    build\<BUILD_TYPE>\<REC_TAG>
rem
rem Exit code: 0 = ok, 1 = invalid configuration.
rem
rem Encoding: keep this file ASCII-only (see msvc_env.bat).
rem ===========================================================================
set "BUILD_TYPE="
set "RECORD_MODE="
set "REC_TAG="
set "BUILD_DIR="

if "%~1"=="" goto :usage

if /i "%~1"=="Debug"   set "BUILD_TYPE=Debug"
if /i "%~1"=="Release" set "BUILD_TYPE=Release"
if not defined BUILD_TYPE (
    echo [ERROR] invalid build type: "%~1"
    echo         expected Debug or Release
    exit /b 1
)

if not "%~2"=="" set "RECORD_MODE=%~2"
if not defined RECORD_MODE set "RECORD_MODE=AUTO"
if /i "%RECORD_MODE%"=="AUTO" set "RECORD_MODE=AUTO"
if /i "%RECORD_MODE%"=="ON"   set "RECORD_MODE=ON"
if /i "%RECORD_MODE%"=="OFF"  set "RECORD_MODE=OFF"
if "%RECORD_MODE%"=="AUTO" set "REC_TAG=REC_AUTO"
if "%RECORD_MODE%"=="ON"   set "REC_TAG=REC_ON"
if "%RECORD_MODE%"=="OFF"  set "REC_TAG=REC_OFF"
if not defined REC_TAG (
    echo [ERROR] invalid record mode: "%~2"
    echo         expected AUTO or ON or OFF
    exit /b 1
)

set "BUILD_DIR=build\%BUILD_TYPE%\%REC_TAG%"
exit /b 0

:usage
echo Usage: config_paths.bat ^<Debug^|Release^> [AUTO^|ON^|OFF^]
exit /b 1