@echo off
setlocal enabledelayedexpansion
SET SCRIPT_PATH=%~dps0
cd /d "%SCRIPT_PATH%"
title Update and Build SyncthingNative "libsyncthing.so"
cls
REM 
REM Script Consts.
SET CLEAN_SRC_BEFORE_BUILD=1
SET USE_GO_DEV=1
SET DESIRED_SUBMODULE_VERSION=v1.2.0
SET GRADLEW_PARAMS=-q
REM
REM Runtime Variables.
SET PATH=%PATH%;"%ProgramFiles%\Git\bin"
REM
echo [INFO] Checking prerequisites ...
REM 
IF NOT EXIST "%ProgramFiles%\Git\bin\git.exe" echo [ERROR] git not found. Install "Git for Windows" first. & goto :eos
REM 
where /q sed
IF NOT "%ERRORLEVEL%" == "0" echo [ERROR] sed.exe not found on PATH. & goto :eos
REM 
IF "%CLEAN_SRC_BEFORE_BUILD%" == "1" call :cleanBeforeBuild 
REM 
echo [INFO] Fetching submodule "Syncthing" 1/2 ...
md "%SCRIPT_PATH%syncthing\src\github.com\syncthing\syncthing" 2> NUL:
git submodule init
SET RESULT=%ERRORLEVEL%
IF NOT "%RESULT%" == "0" echo [ERROR] git submodule init FAILED. & goto :eos
REM 
echo [INFO] Fetching submodule "Syncthing" 2/2 ...
git submodule update --init --recursive --quiet
SET RESULT=%ERRORLEVEL%
IF NOT "%RESULT%" == "0" echo [ERROR] git submodule update FAILED. & goto :eos
REM 
cd /d "%SCRIPT_PATH%syncthing\src\github.com\syncthing\syncthing"
echo [INFO] Fetching GitHub tags ...
git fetch --quiet --all
SET RESULT=%ERRORLEVEL%
IF NOT "%RESULT%" == "0" echo [ERROR] git fetch FAILED. & goto :eos
REM 
echo [INFO] Checking out syncthing_%DESIRED_SUBMODULE_VERSION% ...
git checkout %DESIRED_SUBMODULE_VERSION% 2>&1 | find /i "HEAD is now at"
SET RESULT=%ERRORLEVEL%
IF NOT "%RESULT%" == "0" echo [ERROR] git checkout FAILED. & goto :eos
REM 
cd /d "%SCRIPT_PATH%"
REM
IF "%USE_GO_DEV%" == "1" call :applyGoDev
REM 
echo [INFO] Building submodule syncthing_%DESIRED_SUBMODULE_VERSION% ...
call gradlew %GRADLEW_PARAMS% buildNative
SET RESULT=%ERRORLEVEL%
IF "%USE_GO_DEV%" == "1" call :revertGoDev
IF NOT "%RESULT%" == "0" echo [ERROR] gradlew buildNative FAILED. & goto :eos
REM 
echo [INFO] Checking if SyncthingNative was built successfully ...
REM 
SET LIBCOUNT=
for /f "tokens=*" %%A IN ('dir /s /a "%SCRIPT_PATH%app\src\main\jniLibs\*" 2^>NUL: ^| find /C "libsyncthing.so"') DO SET LIBCOUNT=%%A
IF NOT "%LIBCOUNT%" == "3" echo [ERROR] SyncthingNative[s] "libsyncthing.so" are missing. You should fix that first. & goto :eos
REM 
goto :eos

:cleanBeforeBuild
REM 
REM Syntax:
REM 	call :cleanBeforeBuild
REM 
echo [INFO] Performing cleanup ...
rd /s /q "app\src\main\jniLibs" 2> NUL:
rd /s /q "syncthing\src\github.com\syncthing\syncthing" 2> NUL:
REM
goto :eof

:applyGoDev
REM 
REM Syntax:
REM 	call :applyGoDev
REM 
echo [INFO] Using go-dev instead of go-stable for this build ...
sed -e "s/GO_EXPECTED_SHASUM_WINDOWS = '2f4849b512fffb2cf2028608aa066cc1b79e730fd146c7b89015797162f08ec5'/GO_EXPECTED_SHASUM_WINDOWS = '2fff556d0adaa6fda8300b0751a91a593c359f27265bc0fc7594f9eba794f907'/g" "syncthing\build-syncthing.py" > "%TEMP%\build-syncthing.py.tmp"
move /y "%TEMP%\build-syncthing.py.tmp" "syncthing\build-syncthing.py" 1> NUL:
REM
goto :eof

:revertGoDev
REM 
REM Syntax:
REM 	call :revertGoDev
REM 
echo [INFO] Reverting to go-stable ...
git checkout -- "syncthing\build-syncthing.py"
SET TMP_RESULT=%ERRORLEVEL%
IF NOT "%TMP_RESULT%" == "0" echo [ERROR] git checkout "build-syncthing.py" FAILED. & pause & goto :eof
REM
goto :eof

:applyGoDevByCommit
REM 
REM [UNUSED-FUNC]
REM 
REM Syntax:
REM 	call :applyGoDevByCommit [commit/revert]
REM 
REM Consts.
SET GO_DEV_COMMIT=032c562105b871c2a77e59e3be3de2ada26a365d
REM 
IF "%1" == "commit" echo [INFO] Using go-dev instead of go-stable for this build ... & git cherry-pick --quiet %GO_DEV_COMMIT% & goto :eof
REM 
REM Revert without leaving a commit on the master.
SET TMP_GODEV_COMMIT_CNT=0
for /f "delims= " %%A IN ('git log -1 --pretty^=oneline 2^>^&1 ^| findstr /I /C:"Build with godev"') do SET TMP_GODEV_COMMIT_CNT=1
IF NOT "%TMP_GODEV_COMMIT_CNT%" == "1" echo [ERROR] Failed to revert go-dev to go-stable - commit not found. & pause & goto :eof
echo [INFO] Reverting to go-stable ...
git reset --quiet --hard HEAD~1
SET TMP_RESULT=%ERRORLEVEL%
IF NOT "%TMP_RESULT%" == "0" echo [ERROR] git reset FAILED. & pause & goto :eof
REM
goto :eof

:eos
REM 
echo [INFO] End of Script.
REM
pause
goto :eof