Build multiple packet versions on AppVeyor for Windows (#14)

* Move to PowerShell script for Windows build

* Allow CMake to override struct version

* PACKET_VERSION option

* Rename CNPROTO_CUSTOM to CNPROTO_OVERRIDE

Co-authored-by: Raymonf <Raymonf@users.noreply.github.com>

appveyor.yml

@@ -25,12 +25,40 @@ for:
       type: zip
 -
   matrix:
-      only:
-        - image: Visual Studio 2019
-  before_build:
-     - cmake -B build
+    only:
+      - image: Visual Studio 2019
   build_script:
-     - msbuild build/OpenFusion.sln /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+    - ps: |
+        $versions = "0104", "0728"
+        $configurations = "Release", "Debug"
+
+        # AppVeyor uses VS2019 Community
+        $vsPath = "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community"
+
+        Import-Module "$vsPath\Common7\Tools\Microsoft.VisualStudio.DevShell.dll"
+        Enter-VsDevShell -VsInstallPath $vsPath -SkipAutomaticLocation
+
+        foreach ($version in $versions) {
+            if (Test-Path -LiteralPath "build") {
+                Remove-Item "build" -Recurse
+                Write-Output "Deleted existing build folder"
+            }
+            Invoke-Expression "cmake -B build -DPACKET_VERSION=$version"
+            if ($LASTEXITCODE -ne "0") {
+                Write-Error "cmake generation failed for version $version" -ErrorAction Stop
+            }
+            Write-Output "Generated build files for version $version"
+
+            foreach ($configuration in $configurations) {
+                Write-Output "Building version $version $configuration"
+                Invoke-Expression "msbuild build\OpenFusion.sln /p:Configuration=$configuration"
+                if ($LASTEXITCODE -ne "0") {
+                    Write-Error "msbuild build failed for version $version" -ErrorAction Stop
+                }
+                Rename-Item -Path "bin/$configuration" -newName "$version-$configuration"
+                Write-Output "Built version $version $configuration"
+            }
+        }
   artifacts:
     - path: bin
       name: windows-vs2019-bin-x64