name: SLSA Build L1 (dist provenance attestation)

# SLSA v1.0 Build L1: provenance EXISTS describing how an artifact was built and
# is DISTRIBUTED to consumers (https://slsa.dev/spec/v1.0/levels#build-l1).
#
# This workflow attests the compiled doctrine `dist/` bundle. It complements
# slsa.yml (which attests the git-archive .tar.zst release artifact); both use
# the same Sigstore keyless flow (GitHub OIDC -> Fulcio -> Rekor) via
# actions/attest-build-provenance.
#
# CORRECTION (2026-05-30): this workflow previously claimed SLSA L3 and used
# slsa-github-generator's generator_generic_slsa3.yml with a placeholder-hash
# fallback. The org posture is L1-honest (the README badge says SLSA-L1), so the
# L3 claim was inaccurate and is removed here. We attest real build outputs only.
#
# Doctrine v7: every claim is verifiable; no echo stubs, no placeholder hashes.

on:
  workflow_dispatch:
  release:
    types: [published]

permissions:
  contents: read

jobs:
  attest-dist:
    name: Build dist + attest SLSA L1 provenance
    runs-on: ubuntu-latest
    permissions:
      id-token: write       # OIDC token -> Sigstore keyless signing
      contents: read
      attestations: write   # store the attestation via the repo attestations API
    steps:
      - name: Checkout repository
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3

      - name: Set up Node.js
        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
        with:
          node-version: '22'

      - name: Enable Corepack (pnpm)
        run: corepack enable && corepack prepare pnpm@11.5.0 --activate

      - name: Install dependencies
        env:
          PNPM_CONFIG_STRICT_DEP_BUILDS: "false"
        run: pnpm install --frozen-lockfile

      - name: Build doctrine packages
        env:
          PNPM_CONFIG_VERIFY_DEPS_BEFORE_RUN: "false"
        run: pnpm run build:doctrine

      - name: Collect dist artifacts
        id: collect
        run: |
          set -euo pipefail
          mkdir -p _attest
          # Archive the real built dist trees. Fail loudly if nothing was built
          # (no placeholder fallback).
          found=0
          for d in web/packages/a11oy-core/dist web/packages/a11oy-connection/dist; do
            if [ -d "$d" ]; then
              tar -rf _attest/a11oy-dist.tar "$d"
              found=1
            fi
          done
          if [ "$found" -ne 1 ]; then
            echo "No dist artifacts produced by build:doctrine — failing." >&2
            exit 1
          fi
          gzip -f _attest/a11oy-dist.tar
          echo "artifact=_attest/a11oy-dist.tar.gz" >> "$GITHUB_OUTPUT"
          echo "Built $(wc -c < _attest/a11oy-dist.tar.gz) bytes"

      - name: Attest SLSA provenance (Sigstore keyless)
        uses: actions/attest-build-provenance@a2bbfa25375fe432b6a289bc6b6cd05ecd0c4c32 # v4.1.0
        with:
          subject-path: ${{ steps.collect.outputs.artifact }}

      - name: Upload dist artifact (verifiable subject)
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: a11oy-dist
          path: ${{ steps.collect.outputs.artifact }}
          retention-days: 90