@echo off
setlocal enabledelayedexpansion

:: Define variables
set "SCRIPT_DIR=%~dp0"
set "EXTRACT_DIR=%SCRIPT_DIR%gitportable"
set "GIT_ARCHIVE=PortableGit.7z.exe"
set "API_URL=https://api.github.com/repos/git-for-windows/git/releases/latest"

:: Check if Git is available in the PATH
where git >nul 2>nul
if %errorlevel%==0 (
    echo Git is already installed and available in PATH.
    goto :EOF
)

:: Check if gitportable folder already exists
if exist "%EXTRACT_DIR%\" (
    echo 'gitportable' folder already exists. Skipping download.
    goto :EOF
)

:: Use PowerShell to get the download URL dynamically
echo Fetching latest Portable Git release info...
for /f "usebackq delims=" %%i in (`powershell -NoProfile -Command ^
    "(Invoke-RestMethod -Uri '%API_URL%').assets | Where-Object { $_.name -like '*64-bit.7z.exe' } | Select-Object -First 1 -ExpandProperty browser_download_url"`) do (
    set "GIT_URL=%%i"
)

if not defined GIT_URL (
    echo Failed to find download URL from GitHub API.
    exit /b 1
)

echo Downloading Portable Git from: %GIT_URL%
powershell -NoProfile -Command "Invoke-WebRequest -Uri '%GIT_URL%' -OutFile '%SCRIPT_DIR%%GIT_ARCHIVE%'"

:: Create extraction directory
mkdir "%EXTRACT_DIR%"

:: Extract Portable Git
echo Extracting Portable Git...
"%SCRIPT_DIR%%GIT_ARCHIVE%" -o"%EXTRACT_DIR%" -y

:: Cleanup
del "%SCRIPT_DIR%%GIT_ARCHIVE%"

echo Done. Portable Git is ready in: %EXTRACT_DIR%
pause