chore: add powershell install script

README.md

@@ -41,6 +41,13 @@ Using curl
 curl -sLk https://raw.githubusercontent.com/kevincobain2000/gobrew/master/git.io.sh | sh
 ```
 
+Using powershell
+
+```powershell
+Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://raw.githubusercontent.com/kevincobain2000/gobrew/master/git.io.ps1'))
+
+```
+
 or install using go
 
 ```sh

git.io.ps1

@@ -0,0 +1,181 @@
+$GitHubRepo = "kevincobain2000/gobrew"
+$GoBrewRoot = [IO.Path]::Combine($HOME, ".gobrew")
+$GoRoot = [IO.Path]::Combine($GoBrewRoot, "current", "go")
+
+# check if env GOBREW_ROOT is set
+if ($null -ne [Environment]::GetEnvironmentVariable("GOBREW_ROOT")) {
+  $GoBrewRoot = [IO.Path]::Combine($Env:GOBREW_ROOT, ".gobrew")
+}
+$GoBrewBin = [IO.Path]::Combine($GoBrewRoot, "bin")
+
+$AddUserPaths = @(
+  $GoBrewBin
+  [IO.Path]::Combine($GoBrewRoot, "current", "bin")
+  [IO.Path]::Combine($HOME, "go", "bin")
+)
+
+$AddEnvVars = @{
+  'GOROOT' = $GoRoot
+  'GOPATH' = [IO.Path]::Combine($HOME, "go")
+}
+
+# create bin dir if not exists
+New-Item -ItemType Directory -Force -Path $GoBrewBin -ErrorAction Stop | Out-Null
+
+##
+
+if ($PSVersionTable.PSVersion.Major -lt 6) {
+  $global:IsWindows = ([Environment]::OSVersion.Platform -eq "Win32NT")
+}
+
+$GoArch = {
+  $archMap = @{
+    "amd64" = "x86_64", "i386_64"
+    "386"   = "i386", "i686", "x86"    
+  }
+
+  $platform = {
+    if ($IsWindows) {
+      if (![String]::IsNullOrEmpty($Env:PROCESSOR_ARCHITEW6432)) {
+        return $Env:PROCESSOR_ARCHITEW6432
+      }
+      return $Env:PROCESSOR_ARCHITECTURE
+    }
+    return $(uname -p)
+  }.Invoke().ToLower()
+
+  foreach ($k in $archMap.Keys) {
+    foreach ($v in $archMap[$k]) {
+      if ($platform.Equals($v)) {        
+        return $k
+      }
+    }
+  }
+  return $platform
+}.Invoke()
+
+if ([String]::IsNullOrEmpty($GoArch)) {
+  Write-Host "Unsupported CPU architecture" -f Red
+  Exit 1
+}
+
+$GoOS = {
+  $osMap = @{
+    "linux" = "mingw64_nt", "mingw32_nt"
+  }
+
+  $platform = {
+    if ($IsWindows) {
+      return "windows"
+    }
+    return $(uname -s)
+  }.Invoke().ToLower()
+
+  foreach ($k in $osMap.Keys) {
+    foreach ($v in $osMap[$k]) {
+      if ($platform.StartsWith($v)) {        
+        return $k
+      }
+    }
+  }
+  return $platform  
+}.Invoke()
+
+if ([String]::IsNullOrEmpty($GoOS)) {
+  Write-Host "Unsupported OS: $([Environment]::OSVersion.Platform)" -f Red
+  Exit 1
+}
+
+##
+
+$GoBrewBinName = "gobrew"
+if ($IsWindows) {
+  $GoBrewBinName += ".exe"
+}
+
+$fileMask = "gobrew-$($GoOS)-$($GoArch)"
+
+$releases = "https://api.github.com/repos/$GitHubRepo/releases/latest"
+$latest = (Invoke-WebRequest -Uri $releases -UseBasicParsing -ErrorAction Stop | ConvertFrom-Json)[0]
+$tagName = $latest.tag_name
+$latestAssets = $latest.assets
+$latestBin = $latestAssets | Where-Object { $_.name -match "^$($fileMask).exe" }
+$latestZip = $latestAssets | Where-Object { $_.name -match "^$($fileMask).zip" }
+$matchedAsset = @($latestZip, $latestBin).Where({ ![String]::IsNullOrEmpty($_) }, "First")
+$downloadUrl = $matchedAsset.browser_download_url
+if ([String]::IsNullOrEmpty($downloadUrl)) {
+  Write-Host "Unable to find a valid release URL!" -f Magenta
+  Write-Host "Unable to match OS: $GoOS, CPU: $GoArch" -f Magenta
+  Write-Host "Please open an issue at: https://github.com/$GitHubRepo/issues" -f Magenta 
+  Write-Host "Remember to provide your OS, CPU details and powershell version." -f Magenta
+  Exit 1
+}
+
+Write-Host "Downloading gobrew $tagName from: $downloadUrl ..." -f Cyan
+$GoBrewDownloadPath = [IO.Path]::Combine($GoBrewBin, $matchedAsset.name)
+Remove-Item -Path $GoBrewDownloadPath -Force -ErrorAction SilentlyContinue
+Invoke-WebRequest -OutFile $GoBrewDownloadPath -Uri $downloadUrl -UseBasicParsing -ErrorAction Stop
+if ($null -eq $?) {
+  Write-Host "Failed to download gobrew from: $downloadUrl" -f Red
+  Exit 1
+}
+
+Unblock-File -Path $GoBrewDownloadPath -ErrorAction SilentlyContinue
+
+if (![IO.File]::Exists($GoBrewDownloadPath)) {
+  Write-Host "Failed to download gobrew to: $GoBrewBinPath" -f Red
+  Exit 1
+}
+
+if ($GoBrewDownloadPath.EndsWith('.zip') -and ([IO.Directory]::Exists($GoBrewDownloadPath))) {
+  Write-Host "Extracting gobrew to: $GoBrewBin" -f Cyan
+  Expand-Archive -Path $GoBrewDownloadPath -DestinationPath $GoBrewBin -Force
+  if ($null -eq $?) {
+    Write-Host "Failed to extract gobrew to: $GoBrewBin" -f Red
+    Exit 1
+  }
+  Remove-Item -Path $GoBrewDownloadPath -Force
+}
+else {
+  $GoBrewBinPath = [IO.Path]::Combine($GoBrewBin, $GoBrewBinName)
+  Remove-Item -Path $GoBrewBinPath -Force -ErrorAction SilentlyContinue
+  Rename-Item -Path $GoBrewDownloadPath -NewName $GoBrewBinName -Force -ErrorAction Stop
+  if ([IO.File]::Exists($GoBrewBinPath)) {
+    Write-Host "Gobrew successfully installed to: $GoBrewBinPath" -f Green
+    Write-Host "Run 'gobrew' to see available commands" -f Green
+  }
+  else {
+    Write-Host "Failed to install gobrew to: $GoBrewBinPath" -f Red
+    Exit 1
+  }
+}
+
+# Add paths to user PATH
+$UserEnvVars = [Environment]::GetEnvironmentVariables('User')
+$userPath = $UserEnvVars.Path.Split(';');
+
+[System.Collections.ArrayList]$newPaths = @()
+foreach ($path in $AddUserPaths) {
+  if ($userPath.Contains($path)) {
+    Write-Host "$path is already in user PATH" -f DarkGreen
+    continue
+  }
+  Write-Host "Adding $path to user PATH" -f DarkCyan
+  [void]$newPaths.Add($path)
+}
+$updatedPath = [String]::Join(';', $userPath + $newPaths.ToArray())
+[Environment]::SetEnvironmentVariable('Path', $updatedPath, 'User')
+$Env:Path = $updatedPath.TrimEnd(';') + ';' + [Environment]::GetEnvironmentVariables('Machine').Path
+
+# Set extra environment variables
+foreach ($key in $AddEnvVars.Keys) {
+  $value = $AddEnvVars[$key]
+  if ($UserEnvVars.Contains($key)) {
+    Write-Host "$key is already set" -f DarkGreen
+  }
+  else {
+    Write-Host "Setting $key to $value" -f DarkCyan
+    [Environment]::SetEnvironmentVariable($key, $value, 'User')
+  }
+  Set-Item "Env:$key" -Value $value
+}