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

where go >nul 2>nul
if errorlevel 1 (
    echo [error] Go toolchain not found in PATH.
    exit /b 1
)

where upx >nul 2>nul
if errorlevel 1 (
    echo [error] UPX not found in PATH; the build convention requires compression.
    exit /b 1
)

if not exist "bin" mkdir "bin"

echo [1/2] Building bin\myfile.exe ...
go build -trimpath -ldflags "-s -w" -o "bin\myfile.exe" .
if errorlevel 1 (
    echo [error] go build failed.
    exit /b 1
)

echo [2/2] Compressing with UPX ...
upx -9 "bin\myfile.exe"
if errorlevel 1 (
    echo [error] UPX compression failed.
    exit /b 1
)

echo Build complete: %~dp0bin\myfile.exe
exit /b 0