@echo off
setlocal EnableExtensions

set "SCRIPT_DIR=%~dp0"
set "SOURCE_FILE=%SCRIPT_DIR%index.html"
set "BUILD_DIR=%SCRIPT_DIR%build"
set "OUTPUT_FILE=%BUILD_DIR%\index.html"

if not exist "%SOURCE_FILE%" (
    echo [ERROR] Source file not found:
    echo         %SOURCE_FILE%
    exit /b 1
)

if not exist "%BUILD_DIR%" (
    mkdir "%BUILD_DIR%"
    if errorlevel 1 (
        echo [ERROR] Cannot create build directory:
        echo         %BUILD_DIR%
        exit /b 2
    )
)

copy /Y "%SOURCE_FILE%" "%OUTPUT_FILE%" >nul
if errorlevel 1 (
    echo [ERROR] Cannot build HTML.
    exit /b 3
)

for %%F in ("%OUTPUT_FILE%") do set "OUTPUT_SIZE=%%~zF"
echo [OK] HTML documentation rebuilt:
echo      %OUTPUT_FILE%
echo      %OUTPUT_SIZE% bytes

exit /b 0