@echo off
REM Build dsh-launcher.exe for Windows (amd64).
REM
REM Usage: scripts\build-windows.bat
REM
REM Prerequisites on Windows:
REM   - Go 1.21+           https://go.dev/dl/
REM   - Node.js 18+        https://nodejs.org/
REM   - Wails CLI          go install github.com/wailsapp/wails/v2/cmd/wails@latest
REM   - WebView2 Runtime   Win10 1803+ ships it, else https://aka.ms/webview2
REM   - MSVC build tools   https://visualstudio.microsoft.com/downloads/  (Build Tools, "Desktop development with C++")
REM
REM Note: Wails v2 Windows build needs MSVC toolchain (cgo for webview2 loader).
REM Cannot cross-compile .exe from macOS / Linux.
REM
REM Output: build\bin\dsh-launcher.exe

setlocal enabledelayedexpansion

cd /d "%~dp0\.."

echo ^>^> dsh-launcher Windows build
echo.

REM 1. Tool check
where go >nul 2>nul
if errorlevel 1 (
  echo [X] go not installed
  exit /b 1
)
where node >nul 2>nul
if errorlevel 1 (
  echo [X] node not installed
  exit /b 1
)
where npm >nul 2>nul
if errorlevel 1 (
  echo [X] npm not installed
  exit /b 1
)
where wails >nul 2>nul
if errorlevel 1 (
  echo [X] wails CLI not installed - run: go install github.com/wailsapp/wails/v2/cmd/wails@latest
  exit /b 1
)

REM 2. Must run on Windows
if not "%OS%"=="Windows_NT" (
  echo [X] must run on Windows, current: %OS%
  exit /b 1
)

REM 3. Sync frontend deps
echo ^>^> npm install
cd frontend
call npm install
if errorlevel 1 (
  echo [X] npm install failed
  exit /b 1
)
cd ..

REM 4. Build
echo.
echo ^>^> wails build
wails build -clean -platform windows/amd64
if errorlevel 1 (
  echo [X] wails build failed
  exit /b 1
)

REM 5. Verify
set EXE=build\bin\dsh-launcher.exe
if not exist "%EXE%" (
  echo [X] %EXE% not found
  exit /b 1
)

echo.
echo [OK] exe: %EXE%
echo   run:   %EXE%
echo   build dir: build\bin\
echo.

endlocal