@echo off
setlocal enabledelayedexpansion
echo ===================================
echo  Eleri - Build, Upload and Notify
echo ===================================

:: ---- CONFIG - edit these ----
set UE_VERSION=5.8
set PROJECT_PATH=C:\Projects\ProjectEleri\ProjectEleri.uproject
set PROJECT_NAME=Eleri
set OUTPUT_DIR=C:\Projects\ProjectEleri\BUILD
set MAX_BUILDS=10
set UAT_PATH=C:\Program Files\Epic Games\UE_%UE_VERSION%\Engine\Build\BatchFiles\RunUAT.bat

:: ---- STEAM CONFIG - edit these ----
set STEAMCMD_PATH=C:\Users\adnan\Downloads\steamworks_sdk_161\sdk\tools\ContentBuilder\builder\steamcmd.exe
set STEAM_USERNAME=adodev
set STEAM_APP_ID=3528720
:: Only Shipping gets uploaded to Steam - DebugGame builds are local-only
set STEAM_DEPOT_SHIPPING=3528721
:: Folder where generated Steam VDF scripts will be written (temp working files, safe to keep in OUTPUT_DIR)
set STEAM_VDF_DIR=%OUTPUT_DIR%\steam_vdf

:: ---- ARGUMENTS ----
set BUILD_VERSION=%1
set CHANGELOG=%~2

:: ---- PROMPT IF MISSING ----
if "%BUILD_VERSION%"=="" set /p BUILD_VERSION="Build version (e.g. 1.0.0-build.42): "
if "%CHANGELOG%"=="" set /p CHANGELOG="Changelog / notes (optional, press Enter to skip): "

:: ---- STEP SELECTION ----
echo.
echo Which steps would you like to run?
echo   1 - Build only
echo   2 - Build + Upload to Steam
echo.
set /p RUN_STEPS="Enter choice (1-2): "
if "%RUN_STEPS%"=="" set RUN_STEPS=1
if "%RUN_STEPS%" LSS "1" set RUN_STEPS=1
if "%RUN_STEPS%" GTR "2" set RUN_STEPS=1

:: ---- CONFIG SELECTION ----
echo.
echo Which configuration(s) would you like to build?
echo   1 - DebugGame
echo   2 - Shipping
echo   3 - Both
echo.
set /p CFG_CHOICE="Enter choice (1-3): "
if "%CFG_CHOICE%"=="" set CFG_CHOICE=1
if "%CFG_CHOICE%"=="1" set CONFIGS=DebugGame
if "%CFG_CHOICE%"=="2" set CONFIGS=Shipping
if "%CFG_CHOICE%"=="3" set CONFIGS=DebugGame Shipping
if not defined CONFIGS set CONFIGS=DebugGame

echo.
echo Running steps 1 through %RUN_STEPS% for configuration(s): %CONFIGS%
echo.

:: ====================================
:: MAIN LOOP - one pass per selected config
:: ====================================
for %%C in (%CONFIGS%) do (
    call :build_one_config %%C
    if !errorlevel! neq 0 (
        echo ERROR: Pipeline failed for config %%C.
        pause
        exit /b 1
    )
)

echo.
echo ===================================
echo  All done! (ran steps 1-%RUN_STEPS% for: %CONFIGS%)
echo ===================================
pause
exit /b 0


:: ====================================
:: SUBROUTINE - build/upload a single config
:: %1 = config name (DebugGame or Shipping)
:: ====================================
:build_one_config
set THIS_CONFIG=%~1
set BUILD_OUTPUT=%OUTPUT_DIR%\%BUILD_VERSION%\%THIS_CONFIG%

:: ---- STEP 1: BUILD ----
echo.
echo [1/2] Building %PROJECT_NAME% in %THIS_CONFIG% mode...
echo.
call "%UAT_PATH%" BuildCookRun ^
    -project="%PROJECT_PATH%" ^
    -noP4 ^
    -platform=Win64 ^
    -clientconfig=%THIS_CONFIG% ^
    -cook ^
    -build ^
    -stage ^
    -pak ^
    -archive ^
    -archivedirectory="%BUILD_OUTPUT%" ^
    -prereqs ^
    -nodebuginfo
set BUILD_EXIT=%errorlevel%
echo.
echo UAT exited with code: %BUILD_EXIT%
if %BUILD_EXIT% neq 0 (
    echo ERROR: Build failed for %THIS_CONFIG%!
    exit /b 1
)
echo Build succeeded for %THIS_CONFIG%!
echo Build folder: %BUILD_OUTPUT%

if %RUN_STEPS% EQU 1 exit /b 0

:: ---- STEP 2: UPLOAD TO STEAM ----
if /I "%THIS_CONFIG%"=="DebugGame" (
    echo.
    echo DebugGame is local-only - skipping Steam upload for this config.
    exit /b 0
)

echo.
echo [2/2] Uploading %THIS_CONFIG% build to Steam...

set STEAM_DEPOT=%STEAM_DEPOT_SHIPPING%

if "%STEAM_DEPOT%"=="" (
    echo ERROR: No Steam depot ID configured for Shipping. Skipping upload.
    exit /b 1
)

if not exist "%STEAM_VDF_DIR%" mkdir "%STEAM_VDF_DIR%"
set APP_VDF=%STEAM_VDF_DIR%\app_build_%THIS_CONFIG%.vdf
set DEPOT_VDF=%STEAM_VDF_DIR%\depot_build_%THIS_CONFIG%.vdf

:: Generate depot script - points at the build output directly
(
    echo "DepotBuildConfig"
    echo {
    echo     "DepotID" "%STEAM_DEPOT%"
    echo     "ContentRoot" "%BUILD_OUTPUT%\Windows"
    echo     "FileMapping"
    echo     {
    echo         "LocalPath" "*"
    echo         "DepotPath" "."
    echo         "recursive" "1"
    echo     }
    echo }
) > "%DEPOT_VDF%"

:: Generate app build script
(
    echo "AppBuild"
    echo {
    echo     "AppID" "%STEAM_APP_ID%"
    echo     "Desc" "%PROJECT_NAME% %BUILD_VERSION% [%THIS_CONFIG%] - %CHANGELOG%"
    echo     "ContentRoot" "%BUILD_OUTPUT%\Windows"
    echo     "BuildOutput" "%STEAM_VDF_DIR%\output_%THIS_CONFIG%"
    echo     "Depots"
    echo     {
    echo         "%STEAM_DEPOT%" "%DEPOT_VDF%"
    echo     }
    echo }
) > "%APP_VDF%"

"%STEAMCMD_PATH%" +login %STEAM_USERNAME% +run_app_build "%APP_VDF%" +quit
set STEAM_EXIT=%errorlevel%
if %STEAM_EXIT% neq 0 (
    echo ERROR: Steam upload failed for %THIS_CONFIG% ^(exit code %STEAM_EXIT%^).
    exit /b 1
)
echo Steam upload succeeded for %THIS_CONFIG%!

exit /b 0