upload-coverage-report.yml

name: Upload Coverage Report

on:
  workflow_dispatch:
  schedule:
    - cron: '0 5 * * *' # daily at 00:05

jobs:
  update-coverage-report:
    runs-on: ubuntu-latest
    environment:
      name: github-pages
      url: ${{ steps.deployment.outputs.page_url }}
    # Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
    permissions:
      contents: read
      pages: write
      id-token: write
    # Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
    # However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
    concurrency:
      group: "pages"
      cancel-in-progress: false

    env:
      OUTPUT_DIR: _site/coverage
      WORKFLOW_SPEC: >
        dotnet-windows.yml: coverage-report-windows-net8.0-Release,coverage-report-windows-net481-Release |
        dotnet-ubuntu.yml:  coverage-report-ubuntu-net8.0-Release
    steps:
    - name: Checkout
      uses: actions/checkout@v4
      with:
        fetch-depth: 0 # avoid shallow clone so that nbgv can do its work.

    - name: Check for commits
      id: check
      run: |
        if [[ "${{ github.event_name }}" == "workflow_dispatch" ]]; then
            echo "update_report=true" >> "$GITHUB_OUTPUT"
        else
            commit_count=$(git log --oneline --since '24 hours ago' | wc -l)
            echo "$commit_count found in the last 24 hours"
            if [[ $commit_count -gt 0 ]]; then
                echo "update_report=true" >> "$GITHUB_OUTPUT"
            else
                echo "update_report=false" >> "$GITHUB_OUTPUT"
            fi
        fi

    - name: 'Download latest successful build artifact'
      run: |
        IFS='|' read -ra wsspec <<< "${{ env.WORKFLOW_SPEC }}"
        for ispec in "${wsspec[@]}"; do
            IFS=':' read -ra spec <<< "$ispec"
            workflow_id=$(echo ${spec[0]} | xargs)

            echo "Getting last successful run for workflow '$workflow_id'"

            run_id=$(gh run list -w $workflow_id --json conclusion,headBranch,databaseId --jq 'first(.[] | select(.conclusion | contains("success"))) | .databaseId')
            if [ -z "$run_id" ]; then
              echo "::error::No successful run found for workflow '$workflow_id'" 1>&2
              exit 1
            fi
            echo "Last successful run for workflow '$workflow_id' is '$run_id'"

            IFS=',' read -ra artifacts <<< "${spec[@]:1}"
            for i in "${artifacts[@]}"; do
                artifact_id=$(echo $i | xargs)
                artifact_subdir=$OUTPUT_DIR/$(echo $artifact_id | sed 's/coverage-report-//g' | tr '[:upper:]' '[:lower:]')

                echo "Downloading artifact '$artifact_id' for workflow '$workflow_id'"
                gh run download $run_id -n $artifact_id -D $artifact_subdir || exit 1
            done
        done
      env:
        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      if: ${{ steps.check.outputs.update_report }}

    - name: Generate Badges
      run: |
        for summary in $OUTPUT_DIR/**/Summary.json
        do
          echo "Generate badge for $summary"
          badge_content=$(echo $(basename $(dirname $summary)) | sed -e 's/-release//g' -e 's/-debug//g' -e 's/_/__/g' -e 's/-/--/g' -e 's/ /_/g')

          branch_coverage=$(printf "%.0f" $(jq ".summary.branchcoverage" $summary))
          line_coverage=$(printf "%.0f" $(jq ".summary.linecoverage" $summary))

          if (( branch_coverage < line_coverage )); then
            min_coverage=$branch_coverage
          else
            min_coverage=$line_coverage
          fi

          if [[ $min_coverage -le 50 ]]; then
            badge_color=red
          elif [[ $min_coverage -le 70 ]]; then
            badge_color=magenta
          elif [[ $min_coverage -le 90 ]]; then
            badge_color=yellow
          else
            badge_color=green
          fi

          badge_url="https://img.shields.io/badge/coverage_${badge_content}-b_${branch_coverage}%25_l_${line_coverage}%25-${badge_color}?style=flat-square"
          echo "Badge URL: $badge_url"
          curl -o $(dirname $summary)/badge.svg "$badge_url"
        done
      if: ${{ steps.check.outputs.update_report }}

    - name: Setup Pages
      uses: actions/configure-pages@v5
      if: ${{ steps.check.outputs.update_report }}

    - name: Upload Pages
      uses: actions/upload-pages-artifact@v3        
      with:
        path: _site/coverage
      if: ${{ steps.check.outputs.update_report }}

    - name: Deploy Pages
      id: deployment
      uses: actions/deploy-pages@v4
      if: ${{ steps.check.outputs.update_report }}