Auto-update SNAPSHOT version in Wiki on commit

.github/workflows/build_snapshot.yml

@@ -55,3 +55,22 @@ jobs:
         with:
           gradle-version: 8.1.1
           arguments: publish
+
+      - name: Check out Wiki source data
+        uses: actions/checkout@v3
+        with:
+          repository: ${{ github.repository }}.wiki
+          path: markdown
+
+      - name: Update and publish Wiki SNAPSHOT link
+        run: |
+          xmlResult=$(wget -qO- https://oss.sonatype.org/content/repositories/snapshots/com/fazecast/jSerialComm/${{ steps.gitversion.outputs.version }}-SNAPSHOT/maven-metadata.xml)
+          snapshot=$(echo $xmlResult | grep -o "<snapshot>.*</snapshot>")
+          timestamp=$(echo $snapshot | grep -o "<timestamp>.*</timestamp>" | grep -o "[0-9][^<]*")
+          buildNumber=$(echo $snapshot | grep -o "<buildNumber>.*</buildNumber>" | grep -o "[0-9][^<]*")
+          cd markdown
+          sed -i "s@\*\*Snapshot Version\*\*:.*@\*\*Snapshot Version\*\*: \*${{ steps.gitversion.outputs.version }}-SNAPSHOT\* ([[Download JAR file here|https://oss.sonatype.org/content/repositories/snapshots/com/fazecast/jSerialComm/${{ steps.gitversion.outputs.version }}-SNAPSHOT/jSerialComm-${{ steps.gitversion.outputs.version }}-$timestamp-$buildNumber.jar]])@" Home.md
+          git config --local user.email "action@github.com"
+          git config --local user.name "GitHub Action"
+          git add .
+          git diff-index --quiet HEAD || git commit -m "New SNAPSHOT version" && git push