Feature: Add coverage badge to README

.github/workflows/build.yml

@@ -9,6 +9,8 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
 
     steps:
       - uses: actions/checkout@v6
@@ -34,7 +36,35 @@ jobs:
       - name: Generate Coverage Report
         run: |
           dotnet tool install -g dotnet-reportgenerator-globaltool
-          reportgenerator -reports:./coverage/coverage.cobertura.xml -targetdir:./coverage/report -reporttypes:"MarkdownSummaryGithub" -assemblyfilters:"+SimpleBranchVersioning"
+          reportgenerator -reports:./coverage/coverage.cobertura.xml -targetdir:./coverage/report -reporttypes:"MarkdownSummaryGithub;Badges" -assemblyfilters:"+SimpleBranchVersioning"
 
       - name: Add Coverage to Job Summary
         run: cat ./coverage/report/SummaryGithub.md >> $GITHUB_STEP_SUMMARY
+
+      - name: Publish Coverage Badge
+        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+        run: |
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+          mkdir -p /tmp/badges
+          cp ./coverage/report/badge_linecoverage.svg /tmp/badges/
+          cp ./coverage/report/badge_branchcoverage.svg /tmp/badges/
+
+          if git ls-remote --exit-code --heads origin coverage; then
+            git fetch origin coverage
+            git checkout coverage
+          else
+            git checkout --orphan coverage
+            git rm -rf .
+          fi
+
+          cp /tmp/badges/*.svg .
+          git add badge_linecoverage.svg badge_branchcoverage.svg
+
+          if git diff --staged --quiet; then
+            echo "No changes to coverage badges"
+          else
+            git commit -m "Update coverage badges"
+            git push origin coverage
+          fi

README.md

@@ -1,6 +1,7 @@
 # SimpleBranchVersioning
 
 [![Build](https://github.com/stephanprobst/SimpleBranchVersioning/actions/workflows/build.yml/badge.svg)](https://github.com/stephanprobst/SimpleBranchVersioning/actions/workflows/build.yml)
+[![Coverage](https://raw.githubusercontent.com/stephanprobst/SimpleBranchVersioning/coverage/badge_linecoverage.svg)](https://github.com/stephanprobst/SimpleBranchVersioning/actions/workflows/build.yml)
 [![NuGet](https://img.shields.io/nuget/v/SimpleBranchVersioning.svg)](https://www.nuget.org/packages/SimpleBranchVersioning)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)