windows installation script

install.ps1

@@ -0,0 +1,94 @@
+param (
+    [string]$tag,
+    [string]$binDir = "."
+)
+
+$ErrorActionPreference = "Stop"
+$ProgressPreference = 'SilentlyContinue'
+
+function Get-LatestVersion {
+    $url = "https://api.github.com/repos/orcasecurity/orca-cli/releases/latest"
+    $latestRelease = Invoke-RestMethod -Uri $url
+    return $latestRelease.tag_name
+}
+
+function Validate-Tag {
+    param (
+        [string]$tag
+    )
+
+    $url = "https://api.github.com/repos/orcasecurity/orca-cli/releases/tags/$tag"
+    try {
+        $response = Invoke-RestMethod -Uri $url -Method Head -ErrorAction Stop
+        return $true
+    } catch {
+        return $false
+    }
+}
+
+# Detect architecture
+function Get-Architecture {
+    # Check if the OS is 64-bit
+    $is64bit = [Environment]::Is64BitOperatingSystem
+
+    # Determine the processor architecture
+    if ($is64bit) {
+        if ([System.Environment]::GetEnvironmentVariable("PROCESSOR_ARCHITECTURE") -eq "AMD64") {
+			      return "amd64"
+        } else {
+            return "arm64"
+        }
+    } else {
+        Write-Output "At this moment 32-bit Architecture is not supported."
+		    exit 1
+    }
+}
+
+function Download-InstallOrcaCLI {
+    param(
+        [string]$tag,
+        [string]$binDir
+    )
+
+    $arch = Get-Architecture
+    $tarballUrl = "https://github.com/orcasecurity/orca-cli/releases/download/$tag/orca-cli_$($tag)_windows_$arch.zip"
+    $checksumUrl = "https://github.com/orcasecurity/orca-cli/releases/download/$tag/orca-cli_$($tag)_checksums.txt"
+    Write-Output "Downloading orca-cli.exe, version: $($tag)"
+
+    $tempDirName = "orca-cli_temp_" + (Get-Random)
+    $tempDir = New-Item -ItemType Directory -Path $env:TEMP -Name $tempDirName | Select-Object -ExpandProperty FullName
+    Write-Output "Downloading files into $($tempDir)"
+    try {
+        Invoke-WebRequest -Uri $tarballUrl -OutFile "$($tempDir)\orca-cli_windows.zip" -ErrorAction Stop
+    } catch {
+        Write-Error "Failed to download the binary. Please check your internet connection and ensure that the version/tag is correct."
+        return
+    }
+
+    try {
+        Invoke-WebRequest -Uri $checksumUrl -OutFile "$($tempDir)\orca-cli_windows_checksums.txt" -ErrorAction Stop
+    } catch {
+        Write-Error "Failed to download the checksum file. Please check your internet connection and ensure that the version/tag is correct."
+        return
+    }
+
+    $hash = Get-FileHash -Path "$($tempDir)\orca-cli_windows.zip" -Algorithm SHA256
+    if ((Get-Content "$($tempDir)\orca-cli_windows_checksums.txt") -match $hash.Hash) {
+        Expand-Archive -Path "$($tempDir)\orca-cli_windows.zip" -DestinationPath $tempDir
+        $binexe = "orca-cli.exe"
+        Copy-Item -Path "$($tempDir)\$binexe" -Destination $binDir -Force
+        Write-Output "Orca CLI installed successfully - $($binDir)\$binexe"
+    } else {
+        Write-Error "SHA256 verification failed for $($tempDir)\orca-cli_windows.zip"
+    }
+    Remove-Item -Path $tempDir -Force -Recurse
+}
+
+if (-not $tag) {
+    $tag = Get-LatestVersion
+} elseif (-not (Validate-Tag -tag $tag)) {
+    Write-Error "Invalid tag: $tag"
+    exit
+}
+
+Download-InstallOrcaCLI -tag $tag -binDir $binDir