Choco pack and versioning script made more robust

This script reads the latest published package version and updates the new package version based on assembly version and/or the last published version

Author: MIchaelMainer

scripts/CreateChocoPackage.ps1

@@ -0,0 +1,65 @@
+#
+# Creates the Chocolatey package, sets the version based on assembly version,
+# and whether there is already a CI revision set.
+#
+param([String]$pat, [String]$targetPackageName = 'typewriter')
+
+# Get the assembly version from the built library.
+$pathToTypewriter = $env:Build_SourcesDirectory + '\src\Typewriter\bin\Release\Typewriter.exe'
+$fileInfo = [Diagnostics.FileVersionInfo]::GetVersionInfo($pathToTypewriter)
+$assemblySemver = $fileInfo.FileVersion.ToString()
+
+Write-Host "Target package: $targetPackageName" -ForegroundColor Green
+
+Write-Host "Assembly version: $assemblySemver" -ForegroundColor Green
+
+$finalPackageVersion = ""
+$ciToken = "-ci"
+
+# Get information about the targetPackage from the Feed/Packages Azure DevOps REST API
+# https://docs.microsoft.com/en-us/rest/api/vsts/packaging/packages/list?view=vsts-rest-5.0
+# f887743a-88c6-4716-b4aa-50761b543a15 is the MicrosoftGraph package feed.
+$feedQuery = 'https://feeds.dev.azure.com/o365exchange/_apis/packaging/Feeds/f887743a-88c6-4716-b4aa-50761b543a15/packages?api-version=5.0-preview.1'
+$headerValue = ":" + $pat
+$encodedPat = [Convert]::ToBase64String([Text.Encoding]::UTF8.GetBytes($headerValue))
+$webclient = new-object System.Net.WebClient
+$webclient.Headers.Add("Authorization", "Basic " + $encodedPat)
+
+$jsonObject = $webclient.DownloadString($feedQuery) | ConvertFrom-Json
+
+# Query the JSON object and get the package identifier for the target package name.
+# $packageID = ($jsonObject.value | ? normalizedName -eq $targetPackageName).id
+
+# Query the results of the Feed/Packages call for our target package.
+$packageFeedNormalizedVersion = ($jsonObject.value | ? normalizedName -eq $targetPackageName).versions.normalizedVersion
+
+Write-Host "Package feed version: $packageFeedNormalizedVersion" -ForegroundColor Green
+
+# The string to split could be in the following two forms: "n.n.n" or "n.n.n-ci*"
+$packageFeedNormalizedVersionParts = $packageFeedNormalizedVersion.Split('-')
+
+# Check whether the assembly version and feed version match.
+if ($packageFeedNormalizedVersionParts[0] -eq $assemblySemver) {
+    # The assembly version and feed version match. We'll need to either set the initial ci revision or increment it.
+     
+    # Check whether the latest package in the feed has been updated with a ci release, eg '-ci*'
+    if ($packageFeedNormalizedVersionParts.length -eq 1) {
+        # Append the initial ci revision.
+        $finalPackageVersion = $assemblySemver + $ciToken + "0"
+    } 
+    else {
+        # Increment the ci revision, eg "0.1.2-ci3" becomes "0.1.2-ci4"
+        $number = $packageFeedNormalizedVersionParts[1].Remove(0, 2) -as [int] # removing 'ci'    
+        $finalPackageVersion = $assemblySemver + $ciToken + ($number += 1)
+    }
+
+}
+# They don't match so just use the assembly version.
+else {
+    $finalPackageVersion = $assemblySemver
+}
+
+Write-Host "Final package version: $finalPackageVersion" -ForegroundColor Green
+
+# Create Typewriter package
+choco pack Typewriter.nuspec --version=$finalPackageVersion --out=$env:Build_ArtifactStagingDirectory