Install or update git for windows

update-git.ps1

$gitSetupDirectory = "C:\Windows\temp"

$ino = "Inno Setup CodeFile:"
$params = @{
  "$ino Bash Terminal Option" = "ConHost";
  "$ino CRLF Option" = "CRLFAlways";
  "$ino CURL Option" = "WinSSL";
  "$ino Editor Option" = "VisualStudioCode";
  "$ino Enable Symlinks" = "Enabled";
  "$ino Path Option" = "Cmd";
  "$ino Performance Tweaks FSCache" = "Enabled";
  "$ino Performance SSH Option" = "OpenSSH";
  "$ino Use Credential Manager" = "Enabled";
  "$ino Deselected Components" = "icons,icons\desktop,ext,ext\shellhere,ext\guihere,autoupdate";
  "$ino Icon Group" = "Git";
  "$ino Language" = "default";
  "$ino Selected Components" = "gitlfs,assoc,assoc_sh,consolefont";
};

$regHiveGit = "Microsoft\Windows\CurrentVersion\Uninstall\Git_is1"

$gitReleasesUrl = "https://github.com/git-for-windows/git/releases/latest"

$latesReleasesMarkup = (New-Object System.Net.WebClient).DownloadString($gitReleasesUrl);

Write-Host "GIT 32 Bit install..."

$regHive32 = "HKLM:\SOFTWARE\WOW6432Node";
$installKey32 = "$regHive32\$regHiveGit"
if ((Test-Path $installKey32) -eq $false) {
  $r = md $installKey32
}
foreach ($h in $params.GetEnumerator()) {
  $r = New-ItemProperty $installKey32 -Name $h.Name -Value $h.Value -Force
}

$git32SetupPath = "$gitSetupDirectory\git32.exe"

$regex32 = new-object System.Text.RegularExpressions.Regex(
  '\<a\shref=\"(?<url>.*-32-bit\.exe)\"\srel=.*', 
  [System.Text.RegularExpressions.RegexOptions]::IgnoreCase);

$match32 = $regex32.Match($latesReleasesMarkup);

$32BitUrl = "https://github.com$($match32.Groups["url"].Value)"

if(Test-Path -Path $git32SetupPath){
  Remove-Item $git32SetupPath -Force
}

Write-Host "Downloading $32BitUrl" -ForegroundColor Gray

(New-Object System.Net.WebClient).DownloadFile($32BitUrl, $git32SetupPath);

Write-Host "Starting the Git 32 bit setup " -ForegroundColor Gray
$git32SetupProcess = Start-Process `
  -FilePath $git32SetupPath `
  -Wait `
  -PassThru `
  -ArgumentList @(
    "/VERYSILENT",
    "/NORESTART"
    "/NOCANCEL",
    "/SP-"
    "/CLOSEAPPLICATIONS",
    "/RESTARTAPPLICATIONS"
  );

$git32SetupProcess.WaitForExit();

if(Test-Path -Path $git32SetupPath){
  Remove-Item $git32SetupPath -Force
}
 
Write-Host "$([IO.Path]::GetFileName($git32SetupPath)) exited with code: $($git32SetupProcess.ExitCode)" -ForegroundColor Gray

Write-Host "GIT 64 Bit install..."

$regHive64 = "HKLM:\SOFTWARE";
$installKey64 = "$regHive64\$regHiveGit"
if ((Test-Path $installKey64) -eq $false) {
  $r = md $installKey64
}
foreach ($h in $params.GetEnumerator()) {
  $r = New-ItemProperty $installKey64 -Name $h.Name -Value $h.Value -Force
}

$git64SetupPath = "$gitSetupDirectory\git64.exe"

$regex64 = new-object System.Text.RegularExpressions.Regex(
  '\<a\shref=\"(?<url>.*-64-bit\.exe)\"\srel=.*', 
  [System.Text.RegularExpressions.RegexOptions]::IgnoreCase);

$match64 = $regex64.Match($latesReleasesMarkup);

$64BitUrl = "https://github.com$($match64.Groups["url"].Value)"

if(Test-Path -Path $git64SetupPath){
  Remove-Item $git64SetupPath -Force
}

Write-Host "Downloading $64BitUrl" -ForegroundColor Gray

(New-Object System.Net.WebClient).DownloadFile($64BitUrl, $git64SetupPath);

Write-Host "Starting the Git 64 bit setup " -ForegroundColor Gray
$git64SetupProcess = Start-Process `
  -FilePath $git64SetupPath `
  -Wait `
  -PassThru `
  -ArgumentList @(
    "/VERYSILENT",
    "/NORESTART"
    "/NOCANCEL",
    "/SP-"
    "/CLOSEAPPLICATIONS",
    "/RESTARTAPPLICATIONS"
  );

$git64SetupProcess.WaitForExit();

if(Test-Path -Path $git64SetupPath){
  Remove-Item $git64SetupPath -Force
}
 
Write-Host "$([IO.Path]::GetFileName($git64SetupPath)) exited with code: $($git64SetupProcess.ExitCode)" -ForegroundColor Gray