name: publish-runtime

# Publishes molecule-ai-workspace-runtime to PyPI from monorepo workspace/.
# Monorepo workspace/ is the only source-of-truth for runtime code; this
# workflow is the bridge from monorepo edits to the PyPI artifact that
# the 8 workspace-template-* repos depend on.
#
# Triggered by:
#   - Pushing a tag matching `runtime-vX.Y.Z` (the version is derived from
#     the tag — `runtime-v0.1.6` publishes `0.1.6`).
#   - Manual workflow_dispatch with an explicit `version` input (useful for
#     dev/test releases without tagging the repo).
#   - Auto: any push to `staging` that touches `workspace/**`. The version
#     is derived by querying PyPI for the current latest and bumping the
#     patch component. This closes the human-in-loop gap that caused the
#     2026-04-27 RuntimeCapabilities ImportError outage — adapter symbol
#     additions in workspace/adapters/base.py used to require an operator
#     to remember to publish; now the merge itself triggers the publish.
#
# The workflow:
#   1. Runs scripts/build_runtime_package.py to copy workspace/ →
#      build/molecule_runtime/ with imports rewritten (`a2a_client` →
#      `molecule_runtime.a2a_client`).
#   2. Builds wheel + sdist with `python -m build`.
#   3. Publishes to PyPI via the PyPA Trusted Publisher action (OIDC).
#      No static API token is stored — PyPI verifies the workflow's
#      OIDC claim against the trusted-publisher config registered for
#      molecule-ai-workspace-runtime (molecule-ai/molecule-core,
#      publish-runtime.yml, environment pypi-publish).
#
# After publish: the 8 template repos pick up the new version on their
# next image rebuild (their requirements.txt pin
# `molecule-ai-workspace-runtime>=0.1.0`, so any new release is eligible).
# To force-pull immediately, bump the pin in each template repo's
# requirements.txt and merge — that triggers their own publish-image.yml.

on:
  push:
    tags:
      - "runtime-v*"
    branches:
      - staging
    paths:
      # Auto-publish when staging gets changes that affect what gets
      # published. Path filter ONLY applies to branch pushes — tag pushes
      # still fire regardless.
      #
      # workspace/** is the source-of-truth for runtime code.
      # scripts/build_runtime_package.py is the build script — changes to
      # it (e.g. a fix to the import rewriter or a manifest emit) directly
      # affect what ships in the wheel even if no workspace/ file changes.
      # The 2026-04-27 lib/ subpackage incident missed an auto-publish for
      # exactly this reason — PR #2174 only changed scripts/ and the
      # operator had to remember a manual dispatch.
      - "workspace/**"
      - "scripts/build_runtime_package.py"
  workflow_dispatch:
    inputs:
      version:
        description: "Version to publish (e.g. 0.1.6). Required for manual dispatch."
        required: true
        type: string

permissions:
  contents: read

# Serialize publishes so two staging merges landing seconds apart don't
# both compute "latest+1" and race on PyPI upload. The second one waits.
concurrency:
  group: publish-runtime
  cancel-in-progress: false

jobs:
  publish:
    runs-on: ubuntu-latest
    environment: pypi-publish
    permissions:
      contents: read
      id-token: write   # PyPI Trusted Publisher (OIDC) — no PYPI_TOKEN needed
    outputs:
      version: ${{ steps.version.outputs.version }}
      wheel_sha256: ${{ steps.wheel_hash.outputs.wheel_sha256 }}
    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: "3.11"
          cache: pip

      - name: Derive version (tag, manual input, or PyPI auto-bump)
        id: version
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            VERSION="${{ inputs.version }}"
          elif echo "$GITHUB_REF_NAME" | grep -q "^runtime-v"; then
            # Tag is `runtime-vX.Y.Z` — strip the prefix.
            VERSION="${GITHUB_REF_NAME#runtime-v}"
          else
            # Auto-publish from staging push. Query PyPI for the current
            # latest and bump the patch component. concurrency: group above
            # serializes parallel staging merges so we don't race on the
            # bump. If PyPI is unreachable, fail loud — better to skip a
            # publish than to overwrite an existing version.
            LATEST=$(curl -fsS --retry 3 https://pypi.org/pypi/molecule-ai-workspace-runtime/json \
              | python -c "import sys,json; print(json.load(sys.stdin)['info']['version'])")
            MAJOR=$(echo "$LATEST" | cut -d. -f1)
            MINOR=$(echo "$LATEST" | cut -d. -f2)
            PATCH=$(echo "$LATEST" | cut -d. -f3)
            VERSION="${MAJOR}.${MINOR}.$((PATCH+1))"
            echo "Auto-bumped from PyPI latest $LATEST -> $VERSION"
          fi
          if ! echo "$VERSION" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+(\.dev[0-9]+|rc[0-9]+|a[0-9]+|b[0-9]+|\.post[0-9]+)?$'; then
            echo "::error::version $VERSION does not match PEP 440"
            exit 1
          fi
          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
          echo "Publishing molecule-ai-workspace-runtime $VERSION"

      - name: Install build tooling
        run: pip install build twine

      - name: Build package from workspace/
        run: |
          python scripts/build_runtime_package.py \
            --version "${{ steps.version.outputs.version }}" \
            --out "${{ runner.temp }}/runtime-build"

      - name: Build wheel + sdist
        working-directory: ${{ runner.temp }}/runtime-build
        run: python -m build

      - name: Capture wheel SHA256 for cascade content-verification
        # Recorded BEFORE upload so the cascade probe can verify the
        # bytes Fastly serves under the new version's URL match what
        # we built. Closes a hole left by #2197: that probe verified
        # pip can resolve the version (catches propagation lag) but
        # not that the wheel content matches (would silently pass a
        # Fastly stale-content scenario where the new version's URL
        # serves an old wheel binary).
        id: wheel_hash
        working-directory: ${{ runner.temp }}/runtime-build
        run: |
          set -eu
          WHEEL=$(ls dist/*.whl 2>/dev/null | head -1)
          if [ -z "$WHEEL" ]; then
            echo "::error::No .whl in dist/ — `python -m build` must have failed silently"
            exit 1
          fi
          HASH=$(sha256sum "$WHEEL" | awk '{print $1}')
          echo "wheel_sha256=${HASH}" >> "$GITHUB_OUTPUT"
          echo "Local wheel SHA256 (pre-upload): ${HASH}"
          echo "Wheel filename: $(basename "$WHEEL")"

      - name: Verify package contents (sanity)
        working-directory: ${{ runner.temp }}/runtime-build
        # Smoke logic lives in scripts/wheel_smoke.py so the same gate runs
        # at both PR-time (runtime-prbuild-compat.yml) and publish-time
        # (here). Splitting the smoke across two heredocs let them drift
        # apart historically — one script keeps them locked.
        run: |
          python -m twine check dist/*
          python -m venv /tmp/smoke
          /tmp/smoke/bin/pip install --quiet dist/*.whl
          /tmp/smoke/bin/python "$GITHUB_WORKSPACE/scripts/wheel_smoke.py"

      - name: Publish to PyPI (Trusted Publisher / OIDC)
        # PyPI side is configured: project molecule-ai-workspace-runtime →
        # publisher molecule-ai/molecule-core, workflow publish-runtime.yml,
        # environment pypi-publish. The action mints a short-lived OIDC
        # token and exchanges it for a PyPI upload credential — no static
        # API token in this repo's secrets.
        uses: pypa/gh-action-pypi-publish@release/v1
        with:
          packages-dir: ${{ runner.temp }}/runtime-build/dist/

  cascade:
    # After PyPI accepts the upload, fan out a repository_dispatch to each
    # template repo so they rebuild their image against the new runtime.
    # Each template's `runtime-published.yml` receiver picks up the event,
    # pulls the new PyPI version (their requirements.txt pin is `>=`), and
    # republishes ghcr.io/molecule-ai/workspace-template-<runtime>:latest.
    #
    # Soft-fail per repo: if one template's dispatch fails (perms missing,
    # repo archived, etc.) we still try the others and surface the failures
    # in the workflow summary instead of aborting the whole cascade.
    needs: publish
    runs-on: ubuntu-latest
    steps:
      - name: Wait for PyPI to propagate the new version
        # PyPI accepts the upload, then takes a few seconds to make the
        # new version visible across all THREE surfaces pip touches:
        #   1. /pypi/<pkg>/<ver>/json — metadata endpoint
        #   2. /simple/<pkg>/         — pip's primary download index
        #   3. files.pythonhosted.org — CDN-fronted wheel binary
        # Each has its own cache. The previous check polled only (1)
        # and would let the cascade fire while (2) or (3) still served
        # the previous version, so downstream `pip install` resolved
        # to the old wheel. Docker layer cache then locked that stale
        # resolution in for subsequent rebuilds (the cache trap that
        # bit us five times in one night).
        #
        # Two-stage probe per poll:
        #   (a) `pip install --no-cache-dir PACKAGE==VERSION` — succeeds
        #       only when the version is resolvable. Catches surface (1)
        #       and (2) propagation lag.
        #   (b) `pip download` of the same wheel + SHA256 compare against
        #       the just-built dist's hash. Catches surface (3) lag AND
        #       Fastly serving stale content under the new version's URL
        #       (a separate Fastly-corruption mode that pip-install alone
        #       can't see, since pip install resolves+unpacks against
        #       whatever bytes Fastly returns and never inspects them).
        # Both must pass before the cascade fans out.
        #
        # The venv is reused across polls; only `pip install`/`pip
        # download` run in the loop, with --force-reinstall +
        # --no-cache-dir so the previous poll's cached state doesn't
        # mask propagation lag.
        env:
          RUNTIME_VERSION: ${{ needs.publish.outputs.version }}
          EXPECTED_SHA256: ${{ needs.publish.outputs.wheel_sha256 }}
        run: |
          set -eu
          if [ -z "$EXPECTED_SHA256" ]; then
            echo "::error::publish job did not expose wheel_sha256 — cannot verify wheel content. Refusing to fan out cascade."
            exit 1
          fi
          python -m venv /tmp/propagation-probe
          PROBE=/tmp/propagation-probe/bin
          $PROBE/pip install --upgrade --quiet pip
          # Poll budget: 30 attempts × (~3-5s pip install + ~3s pip
          # download + 4s sleep) ≈ 5-6 min wall on a slow GH runner.
          # Generous vs PyPI's typical few-seconds propagation;
          # failures past this are signal of a real PyPI / Fastly
          # issue, not just lag.
          for i in $(seq 1 30); do
            # Stage (a): can pip resolve and install the version?
            if $PROBE/pip install \
                  --quiet \
                  --no-cache-dir \
                  --force-reinstall \
                  --no-deps \
                  "molecule-ai-workspace-runtime==${RUNTIME_VERSION}" \
                  >/dev/null 2>&1; then
              INSTALLED=$($PROBE/pip show molecule-ai-workspace-runtime 2>/dev/null \
                          | awk -F': ' '/^Version:/{print $2}')
              if [ "$INSTALLED" = "$RUNTIME_VERSION" ]; then
                # Stage (b): does Fastly serve the bytes we uploaded?
                # `pip download` writes the actual .whl file to disk so
                # we can sha256sum it (vs `pip install` which unpacks
                # and discards).
                rm -rf /tmp/probe-dl
                mkdir -p /tmp/probe-dl
                if $PROBE/pip download \
                      --quiet \
                      --no-cache-dir \
                      --no-deps \
                      --dest /tmp/probe-dl \
                      "molecule-ai-workspace-runtime==${RUNTIME_VERSION}" \
                      >/dev/null 2>&1; then
                  WHEEL=$(ls /tmp/probe-dl/*.whl 2>/dev/null | head -1)
                  if [ -n "$WHEEL" ]; then
                    ACTUAL=$(sha256sum "$WHEEL" | awk '{print $1}')
                    if [ "$ACTUAL" = "$EXPECTED_SHA256" ]; then
                      echo "::notice::✓ pip resolves AND wheel content matches after ${i} poll(s) (sha256=${EXPECTED_SHA256})"
                      exit 0
                    fi
                    # Hash mismatch: PyPI accepted our upload but Fastly
                    # is serving different bytes under the version's URL.
                    # Most often this is propagation lag of the BINARY
                    # surface — the version is resolvable but the wheel
                    # cache hasn't caught up. Retry.
                    echo "::warning::poll ${i}: wheel content mismatch (got ${ACTUAL:0:12}…, want ${EXPECTED_SHA256:0:12}…) — Fastly likely still serving stale binary, retrying"
                  fi
                fi
              fi
            fi
            sleep 4
          done
          echo "::error::pip never resolved molecule-ai-workspace-runtime==${RUNTIME_VERSION} with matching wheel content within ~5 min."
          echo "::error::Expected wheel SHA256: ${EXPECTED_SHA256}"
          echo "::error::Refusing to fan out cascade against stale or corrupt PyPI surfaces."
          exit 1

      - name: Fan out via push to .runtime-version
        env:
          # Gitea PAT with write:repository scope on the 8 cascade-active
          # template repos. Used here for `git push` (NOT for an API
          # dispatch — Gitea 1.22.6 has no repository_dispatch endpoint;
          # empirically verified across 6 candidate paths in molecule-
          # core#20 issuecomment-913). The push trips each template's
          # existing `on: push: branches: [main]` trigger on
          # publish-image.yml, which then reads the updated
          # .runtime-version via its resolve-version job.
          DISPATCH_TOKEN: ${{ secrets.DISPATCH_TOKEN }}
          RUNTIME_VERSION: ${{ needs.publish.outputs.version }}
        run: |
          set +e   # don't abort on a single repo failure — collect them all

          # Soft-skip on workflow_dispatch when the token is missing
          # (operator ad-hoc test); hard-fail on push so unattended
          # publishes can't silently skip the cascade. Same shape as
          # the original v1, intentional split per the schedule-vs-
          # dispatch hardening 2026-04-28.
          if [ -z "$DISPATCH_TOKEN" ]; then
            if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
              echo "::warning::DISPATCH_TOKEN secret not set — skipping cascade."
              echo "::warning::set it at Settings → Secrets and Variables → Actions, then rerun. Templates will stay on the prior runtime version until either this token is set or each template is rebuilt manually."
              exit 0
            fi
            echo "::error::DISPATCH_TOKEN secret missing — cascade cannot fan out."
            echo "::error::PyPI was published, but the 8 template repos will NOT pick up the new version until this token is restored and a republish dispatches the cascade."
            echo "::error::set it at Settings → Secrets and Variables → Actions; then re-trigger publish-runtime via workflow_dispatch."
            exit 1
          fi
          VERSION="$RUNTIME_VERSION"
          if [ -z "$VERSION" ]; then
            echo "::error::publish job did not expose a version output — cascade cannot fan out"
            exit 1
          fi

          # All 9 workspace templates declared in manifest.json. The list
          # MUST stay aligned with manifest.json's workspace_templates —
          # cascade-list-drift-gate.yml enforces this in CI per the
          # codex-stuck-on-stale-runtime invariant from PR #2556.
          # Long-term goal: derive this list from manifest.json so it
          # can't drift even on a manifest edit (RFC #388 Phase-1).
          #
          # Per-template publish-image.yml presence is checked at
          # cascade-time below: codex doesn't ship one today, so the
          # cascade soft-skips it with an informational message rather
          # than dropping it from this list (which would re-introduce
          # the drift the gate exists to catch).
          GITEA_URL="${GITEA_URL:-https://git.moleculesai.app}"
          TEMPLATES="claude-code hermes openclaw codex langgraph crewai autogen deepagents gemini-cli"
          FAILED=""
          SKIPPED=""

          # Configure git identity once. The persona owning DISPATCH_TOKEN
          # is the same identity that authored this commit on each
          # template; using a generic "publish-runtime cascade" co-author
          # trailer in the message keeps the audit trail honest about the
          # workflow-driven origin.
          git config --global user.name  "publish-runtime cascade"
          git config --global user.email "publish-runtime@moleculesai.app"

          WORKDIR="$(mktemp -d)"
          for tpl in $TEMPLATES; do
            REPO="molecule-ai/molecule-ai-workspace-template-$tpl"
            CLONE="$WORKDIR/$tpl"

            # Pre-check: skip templates without a publish-image.yml.
            # The cascade's job is to trip the template's on-push
            # rebuild — if there's no rebuild workflow, pushing a
            # .runtime-version commit is just noise on the target
            # repo. Use the Gitea contents API (no clone required for
            # the probe). 200 = present; 404 = absent.
            HTTP=$(curl -sS -o /dev/null -w "%{http_code}" \
              -H "Authorization: token $DISPATCH_TOKEN" \
              "$GITEA_URL/api/v1/repos/$REPO/contents/.github/workflows/publish-image.yml")
            if [ "$HTTP" = "404" ]; then
              echo "↷ $tpl has no publish-image.yml — soft-skip (informational; manifest still tracks it)"
              SKIPPED="$SKIPPED $tpl"
              continue
            fi
            if [ "$HTTP" != "200" ]; then
              echo "::warning::$tpl publish-image.yml probe returned HTTP $HTTP — proceeding anyway, push will surface the real failure if any"
            fi

            # Use a per-template attempt loop so a transient race (e.g.
            # human pushing to the same template at the same instant)
            # doesn't lose the cascade. Bounded retries (3) — beyond
            # that we surface the failure and let the operator retry.
            attempt=0
            success=false
            while [ $attempt -lt 3 ]; do
              attempt=$((attempt + 1))
              rm -rf "$CLONE"
              if ! git clone --depth=1 \
                  "https://x-access-token:${DISPATCH_TOKEN}@${GITEA_URL#https://}/$REPO.git" \
                  "$CLONE" >/tmp/clone.log 2>&1; then
                echo "::warning::clone $tpl attempt $attempt failed: $(tail -n3 /tmp/clone.log)"
                sleep 2
                continue
              fi

              cd "$CLONE"
              echo "$VERSION" > .runtime-version

              # Idempotency guard: if the file already matches, this
              # publish is a re-run for a version already cascaded.
              # Don't push a no-op commit (would spuriously re-trip the
              # template's on-push and rebuild for nothing).
              if git diff --quiet -- .runtime-version; then
                echo "✓ $tpl already at $VERSION — no commit needed (idempotent)"
                success=true
                cd - >/dev/null
                break
              fi

              git add .runtime-version
              git commit -m "chore: pin runtime to $VERSION (publish-runtime cascade)" \
                -m "Co-Authored-By: publish-runtime cascade <publish-runtime@moleculesai.app>" \
                >/dev/null

              if git push origin HEAD:main >/tmp/push.log 2>&1; then
                echo "✓ $tpl pushed $VERSION on attempt $attempt"
                success=true
                cd - >/dev/null
                break
              fi

              # Likely a non-fast-forward — pull-rebase and retry.
              # Don't force-push: that would silently overwrite a racing
              # human/cascade commit.
              echo "::warning::push $tpl attempt $attempt failed, pull-rebasing: $(tail -n3 /tmp/push.log)"
              git pull --rebase origin main >/tmp/rebase.log 2>&1 || true
              cd - >/dev/null
            done

            if [ "$success" != "true" ]; then
              FAILED="$FAILED $tpl"
            fi
          done
          rm -rf "$WORKDIR"

          if [ -n "$FAILED" ]; then
            echo "::error::Cascade incomplete after 3 retries each. Failed templates:$FAILED"
            echo "::error::PyPI publish succeeded; failed templates lag the new version. Re-run this workflow_dispatch with the same version to retry only the laggers (idempotent — already-cascaded templates skip)."
            exit 1
          fi
          if [ -n "$SKIPPED" ]; then
            echo "Cascade complete: pinned $VERSION on cascade-active templates. Soft-skipped (no publish-image.yml):$SKIPPED"
          else
            echo "Cascade complete: $VERSION pinned across all manifest workspace_templates."
          fi
