Add step to check semantic version

- Runs during pull requests to check that the version number is increasing
- Skipped during pushes to main or releases

Author: bparks13

.github/workflows/build.yml

@@ -24,8 +24,49 @@ jobs:
         id: setup-build
         run: echo "build-suffix=${{ github.event_name == 'push' && env.CiRunPushSuffix || github.event_name == 'pull_request' && env.CiRunPullSuffix || null }}" >> "$GITHUB_OUTPUT"
 
+  check-semver:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'pull_request'
+    steps:
+      - name: Checkout current version
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Find previous release
+        id: previous-release
+        env:
+          GH_TOKEN: ${{ github.token }}
+        run: |
+          echo "RELEASE_NAME=$(gh release list -L 1 --json tagName -q .[0].tagName)" >> $GITHUB_OUTPUT
+      - name: Checkout last release version
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ steps.previous-release.outputs.RELEASE_NAME }}
+          path: last-release
+          sparse-checkout: |
+            Directory.Build.props
+          sparse-checkout-cone-mode: false
+
+      - name: Extract Versions
+        id: extract-versions
+        run: |
+          echo "CURRENT_VERSION=$(cat ./Directory.Build.props | grep -Po '(?<=VersionPrefix>).*(?=</VersionPrefix>)')" >> $GITHUB_OUTPUT
+          echo "PREVIOUS_VERSION=$(cat ./last-release/Directory.Build.props | grep -Po '(?<=VersionPrefix>).*(?=</VersionPrefix>)')" >> $GITHUB_OUTPUT
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.10.12"
+
+      - name: Install semver
+        run: python -m pip install semver
+
+      - name: Compare Versions
+        run: .github/workflows/compare_version_numbers.sh
+      
   build:
-    needs: [setup]
+    needs: [setup, check-semver]
+    if: always() && !failure() && !cancelled()
     strategy:
       fail-fast: false
       matrix:
@@ -71,7 +112,7 @@ jobs:
     permissions:
       packages: write
     needs: [build]
-    if: github.event_name == 'push' || github.event_name == 'release'
+    if: (github.event_name == 'push' || github.event_name == 'release') && always() && !failure() && !cancelled()
     steps:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4

.github/workflows/compare_version_numbers.sh

@@ -0,0 +1,12 @@
+#! /bin/bash
+
+version_current=$(cat ./Directory.Build.props | grep -Po '(?<=VersionPrefix>).*(?=</VersionPrefix>)')
+version_release=$(cat ./last-release/Directory.Build.props | grep -Po '(?<=VersionPrefix>).*(?=</VersionPrefix>)')
+
+echo "Current Version: $version_current"
+echo "Release Version: $version_release"
+
+if [ ! $(python -c "import semver; print(semver.compare(\"$version_current\", \"$version_release\"))") == 1 ]; then
+  echo "::error title=Invalid version number::Version number must be increased"
+  exit 1
+fi

Directory.Build.props

@@ -13,7 +13,7 @@
     <PackageLicenseFile>LICENSE</PackageLicenseFile>
     <UseArtifactsOutput>true</UseArtifactsOutput>
     <PackageIcon>icon.png</PackageIcon>
-    <VersionPrefix>0.2.0</VersionPrefix>
+    <VersionPrefix>0.3.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <LangVersion>10.0</LangVersion>
     <Features>strict</Features>