coverage_gate.yml

name: Coverage Gate

on:
  workflow_call:
    inputs:
      artifact_id:
        description: "Artifact name for the coverage-gate result"
        required: true
        type: string

jobs:
  coverage_gate:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Download coverage HTML artifact
        uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
        with:
          name: code-coverage-report
          path: coverage_html

      - name: Debug list coverage files
        run: |
          echo "=== coverage_html contents ==="
          ls -R coverage_html

      - name: Enforce coverage threshold
        run: |
          THRESHOLD=99.19

          echo "=== Extracting line coverage for 'Lines:' from index.html ==="

          HEADER_BLOCK=$(grep -A1 'Lines:' coverage_html/index.html || true)
          echo "$HEADER_BLOCK"

          LINE_COV=$(echo "$HEADER_BLOCK" | grep -oE "[0-9]+(\.[0-9]+)?" | head -n1 || true)
          echo "Extracted Line coverage: '${LINE_COV}'"

          if [ -z "$LINE_COV" ]; then
            echo "Could not extract line coverage for 'Lines:' from index.html"
            exit 1
          fi

          COMPARE=$(awk -v cov="$LINE_COV" -v thr="$THRESHOLD" 'BEGIN { if (cov < thr) print "lt"; else print "ge"; }')

          if [ "$COMPARE" = "lt" ]; then
            echo "Coverage below threshold, failing job."
            exit 1
          fi

          echo "Coverage is above threshold."

      - name: Create coverage-gate result
        if: always()
        run: |
          mkdir -p coverage_gate

          THRESHOLD=99.19

          LINE_COV=""
          if [ -f coverage_html/index.html ]; then
            HEADER_BLOCK=$(grep -A1 'Lines:' coverage_html/index.html || true)
            LINE_COV=$(echo "$HEADER_BLOCK" | grep -oE "[0-9]+(\.[0-9]+)?" | head -n1 || true)
          fi

          {
            echo "status=${{ job.status }}"
            echo "line_coverage=${LINE_COV}"
            echo "threshold=${THRESHOLD}"
          } > coverage_gate/coverage_gate.txt


      - name: Upload coverage-gate artifact
        if: always()
        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
        with:
          name: ${{ inputs.artifact_id }}
          path: coverage_gate/coverage_gate.txt