name: E2E Failure Analyzer
description: >-
  Post-test analyzer for the Go E2E suites. Parses junit-*.xml emitted by
  go-junit-report, clusters failures by signature, picks the earliest
  non-cascade failure per suite as the likely root cause, and appends a
  human-readable report to $GITHUB_STEP_SUMMARY. Always exits 0 — the
  existing "Fail job if any suite failed" gate keeps owning exit-code
  semantics.

inputs:
  junit-glob:
    description: Shell glob matching JUnit XML files to analyze.
    required: true
  log-dir:
    description: >-
      Artifact directory. The rendered report is also written to
      $log-dir/analysis.md so it travels with the uploaded artifact.
    required: true
  title:
    description: Heading rendered at the top of the summary section.
    required: false
    default: "E2E failure analysis"

runs:
  using: composite
  steps:
    - id: analyze
      shell: bash
      working-directory: ${{ github.action_path }}
      env:
        ANALYZE_JUNIT_GLOB: ${{ inputs.junit-glob }}
        ANALYZE_LOG_DIR: ${{ inputs.log-dir }}
        ANALYZE_TITLE: ${{ inputs.title }}
      run: |
        go run . \
          -junit-glob "$ANALYZE_JUNIT_GLOB" \
          -log-dir "$ANALYZE_LOG_DIR" \
          -title "$ANALYZE_TITLE"