name: Marathon Evals
# The NON-BLOCKING marathon lane: complete start-to-finish flows (tier
# 'marathon' in test/helpers/touchfiles-data.ts / describeE2ETier('marathon'))
# that take longer than a blocking lane's ~12-minute wall. They never run in
# the PR gate (evals.yml) or the weekly periodic + gate census
# (evals-periodic.yml); nothing requires this workflow, so a red marathon
# reports through its own tracking issue without gating any merge. Same engine
# and FAIL-CLOSED report as the other lanes: one planner manifest, one file per
# runner, a missing slice artifact is a failure. Always fresh: no result reuse.
on:
  schedule:
    - cron: '0 12 * * 6'  # Saturday 12:00 UTC, clear of the Monday periodic census
  workflow_dispatch:

# One group per ref and event: a branch dispatch never cancels main's
# scheduled marathon, and a manual main dispatch never cancels the schedule.
concurrency:
  group: evals-marathon-${{ github.ref }}-${{ github.event_name }}
  cancel-in-progress: true

env:
  IMAGE: ghcr.io/${{ github.repository }}/ci
  EVALS_PROFILE: full
  EVALS_FRESH: "1"
  EVALS_CACHE_PURPOSE: marathon

jobs:
  build-image:
    runs-on: ubicloud-standard-8
    timeout-minutes: 15
    permissions:
      contents: read
      packages: write
    outputs:
      image-tag: ${{ steps.meta.outputs.tag }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7

      - id: meta
        # Keep in sync with evals.yml and evals-periodic.yml — key on Dockerfile + lockfile only
        # (package.json's version field would bust the key on every ship).
        # Byte-identity pinned by test/ci-image-tag-binding.test.ts.
        run: echo "tag=${{ env.IMAGE }}:${{ hashFiles('.github/docker/Dockerfile.ci', 'bun.lock', 'patches/**') }}" >> "$GITHUB_OUTPUT"

      - uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Check if image exists
        id: check
        run: |
          if docker manifest inspect ${{ steps.meta.outputs.tag }} > /dev/null 2>&1; then
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi

      - if: steps.check.outputs.exists == 'false'
        run: cp package.json bun.lock .github/docker/ && cp -R patches .github/docker/patches

      # Registry cache export needs a docker-container builder — the default
      # `docker` driver hard-errors on cache-to.
      - if: steps.check.outputs.exists == 'false'
        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4

      - if: steps.check.outputs.exists == 'false'
        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7
        with:
          context: .github/docker
          file: .github/docker/Dockerfile.ci
          push: true
          # Cron-triggered in the base repo only, so cache export is always safe here.
          cache-from: type=registry,ref=${{ env.IMAGE }}:buildcache
          cache-to: type=registry,ref=${{ env.IMAGE }}:buildcache,mode=max
          tags: |
            ${{ steps.meta.outputs.tag }}
            ${{ env.IMAGE }}:latest


  plan-slices:
    runs-on: ubicloud-standard-8
    timeout-minutes: 10
    permissions:
      contents: read
    outputs:
      slices: ${{ steps.matrix.outputs.slices }}
      slice_timeouts: ${{ steps.matrix.outputs.slice_timeouts }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          persist-credentials: false

      - uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
        with:
          bun-version: 1.4.2

      # One marathon file per runner: a 1-second budget never packs two
      # recorded files together.
      - name: Emit run manifest (ALL marathon tests)
        env:
          EVALS_ALL: "1"
        run: EVALS_TIER=marathon bun --no-install run scripts/test-paid-shards.ts --tier marathon --emit-plan /tmp/marathon-plan/manifest.json --slice-budget 1 --jobs 1

      - name: Derive the executor matrix from the plan
        id: matrix
        run: |
          echo "slices=$(jq -c '[range(1; .sliceCount + 1)]' /tmp/marathon-plan/manifest.json)" >> "$GITHUB_OUTPUT"
          echo "slice_timeouts=$(jq -ec '[0] + .plan.sliceCiTimeoutMinutes' /tmp/marathon-plan/manifest.json)" >> "$GITHUB_OUTPUT"

      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: marathon-plan
          path: /tmp/marathon-plan/manifest.json
          retention-days: 30

  eval-slices:
    runs-on: ubicloud-standard-8
    needs: [build-image, plan-slices]
    env:
      EVALS_RUN_ID: ci-${{ github.run_id }}-${{ github.run_attempt }}-marathon-${{ matrix.slice }}
    # One marathon file per runner; its job ceiling is that file's supervised
    # wall plus 20 minutes setup (W2c/ENG-2), indexed by slice ([0] pads the
    # array). The executor stops 5 minutes before it so results still upload.
    timeout-minutes: ${{ fromJSON(needs.plan-slices.outputs.slice_timeouts)[matrix.slice] }}
    permissions:
      contents: read
      packages: read
    container:
      image: ${{ needs.build-image.outputs.image-tag }}
      credentials:
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
      options: --user runner
    strategy:
      fail-fast: false
      max-parallel: 8
      matrix:
        slice: ${{ fromJSON(needs.plan-slices.outputs.slices) }}
    steps:
      - name: Record the job start for the slice deadline
        run: echo "GSTACK_SLICE_JOB_STARTED_AT=$(date +%s)" >> "$GITHUB_ENV"

      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Full history: files with SELF-derived selection (the LLM-judge
          # map, routing) walk git at module load, and selection is
          # fail-closed on git errors — a shallow checkout crashed those
          # shards on the lane's first live run ("ambiguous argument
          # 'main...HEAD'"). The manifest still governs WHICH shards run.
          fetch-depth: 0
          persist-credentials: false

      - name: Fix bun temp
        uses: ./.github/actions/fix-bun-temp

      - name: Restore deps
        uses: ./.github/actions/restore-deps

      - run: bun run build

      # Any slice can host a PTY test — seed + registration run
      # unconditionally (idempotent; mirrors evals.yml's sliced lane). The
      # register composite carries the fail-fast dangling-symlink/frontmatter
      # verification loop — this lane previously LACKED it, so a moved skill
      # target surfaced as a silent "Unknown command" + wedged PTY session.
      - name: Seed claude interactive config
        uses: ./.github/actions/seed-claude-config
        with:
          anthropic-api-key: ${{ secrets.ANTHROPIC_API_KEY }}

      - name: Register gstack skills for PTY tests
        uses: ./.github/actions/register-gstack-skills

      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
        with:
          name: marathon-plan
          path: /tmp/marathon-plan

      # The image ships the pinned Codex CLI off PATH and without a
      # credential; codex does not read OPENAI_API_KEY from the environment.
      # Log it in from the secret (same-repo runs only) under a non-default
      # home. The shard runner hands that home and the CLI to the Codex files
      # only (scripts/lib/paid-cases.ts scopeCodexAccess); every other paid case sees no
      # Codex, as before. Without a key the Codex cases fail; they never pass.
      - name: Authenticate the Codex CLI
        shell: bash
        if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
        env:
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
        run: |
          set -euo pipefail
          codex="${GSTACK_CI_CODEX_BIN_DIR:?}/codex"
          export CODEX_HOME="$HOME/.gstack-ci-codex"
          mkdir -p "$CODEX_HOME"
          echo "GSTACK_CI_CODEX_HOME=$CODEX_HOME" >> "$GITHUB_ENV"
          if [ -z "${OPENAI_API_KEY:-}" ]; then
            echo "::warning::OPENAI_API_KEY is unavailable; Codex eval cases cannot authenticate and will fail."
            exit 0
          fi
          printenv OPENAI_API_KEY | "$codex" login --with-api-key
          "$codex" login status >/dev/null 2>&1

      - name: Run marathon slice ${{ matrix.slice }}
        env:
          ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
          OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
          GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
          PLAYWRIGHT_BROWSERS_PATH: /opt/playwright-browsers
          EVALS_JOBS: "1"
          EVALS_CONCURRENCY: "2"
          GSTACK_EVAL_DIR: /tmp/marathon-slice-results
        run: EVALS_TIER=marathon bun run scripts/test-paid-shards.ts --tier marathon --plan /tmp/marathon-plan/manifest.json --slice ${{ matrix.slice }}

      - name: Upload slice results
        if: always()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: marathon-slice-${{ matrix.slice }}-a${{ github.run_attempt }}
          path: /tmp/marathon-slice-results
          retention-days: 90

      - name: Upload native capture evidence
        if: always()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: native-captures-${{ env.EVALS_RUN_ID }}
          include-hidden-files: true
          path: |
            ~/.gstack/projects/*/e2e-runs
            ~/.gstack/projects/*/evals/qa-callers
            ~/.gstack-dev/e2e-runs
            ~/.gstack-dev/evals/qa-callers
          if-no-files-found: ignore
          retention-days: 90

      - name: Upload shard logs on failure
        if: failure()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: marathon-logs-slice-${{ matrix.slice }}-a${{ github.run_attempt }}
          include-hidden-files: true
          # The Fix-bun-temp step points TMPDIR at /home/runner/.cache, so the
          # runner's spool lands THERE, not /tmp — the original /tmp glob
          # uploaded nothing and a red slice's diagnostics were unreachable.
          path: |
            /home/runner/.cache/gstack-paid-shard-*.log
            /tmp/gstack-paid-shard-*.log
          if-no-files-found: ignore
          retention-days: 30

  report:
    runs-on: ubicloud-standard-2
    needs: [plan-slices, eval-slices]
    # !cancelled(): the report must run (and FAIL) when an executor died — a
    # missing slice artifact reading as green is the class this lane kills —
    # but a cancelled run stops here.
    if: ${{ !cancelled() && needs.plan-slices.result == 'success' }}
    timeout-minutes: 10
    permissions:
      contents: read
      issues: write
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          persist-credentials: false

      - uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
        with:
          bun-version: 1.4.2

      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
        with:
          name: marathon-plan
          path: /tmp/marathon-report

      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
        with:
          pattern: marathon-slice-*
          path: /tmp/marathon-report

      - name: Reconcile slices against the manifest (fail-closed)
        id: reconcile
        if: always()
        run: |
          set +e
          EVALS_TIER=marathon bun --no-install run scripts/test-paid-shards.ts --tier marathon --report /tmp/marathon-report | tee /tmp/report.txt
          # PIPESTATUS[0], NOT $?: the default step shell has no pipefail.
          echo "exit=${PIPESTATUS[0]}" >> "$GITHUB_OUTPUT"

      # A red marathon run writes its report to the step summary and the
      # marathon-report artifact on every ref. Only main upserts the lane's ONE
      # tracking issue (never one per week) and closes it on the next green
      # run; a branch-dispatched run never touches main's issue.
      - name: Write the marathon report
        if: always() && (steps.reconcile.outputs.exit != '0' || needs.eval-slices.result != 'success')
        run: |
          set -euo pipefail
          {
            echo "Marathon report (non-blocking lane): branch ${GITHUB_REF_NAME} @ ${GITHUB_SHA}, event ${GITHUB_EVENT_NAME}, run ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}"
            echo
            echo "A census went red: triage with ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/blob/${GITHUB_SHA}/docs/evals/census-red.md"
            echo
            echo "- reconciliation exit: ${{ steps.reconcile.outputs.exit }}"
            echo "- marathon slices job: ${{ needs.eval-slices.result }}"
            echo
            { tail -c 6000 /tmp/report.txt 2>/dev/null || echo "(no reconciliation output)"; } \
              | bun --no-install -e 'import { publishedFence } from "./scripts/lib/published-text";
                  const lines = (await Bun.stdin.text()).split("\n").filter(Boolean);
                  console.log(publishedFence(lines.length ? lines : ["(none)"]).join("\n"));'
          } > /tmp/marathon-report.md
          cat /tmp/marathon-report.md >> "$GITHUB_STEP_SUMMARY"

      - name: Upload the marathon report
        if: always() && (steps.reconcile.outputs.exit != '0' || needs.eval-slices.result != 'success')
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: marathon-report-a${{ github.run_attempt }}
          path: /tmp/marathon-report.md
          if-no-files-found: ignore
          retention-days: 90

      - name: Upsert tracking issue on failure
        if: always() && github.ref == 'refs/heads/main' && (steps.reconcile.outputs.exit != '0' || needs.eval-slices.result != 'success')
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          TITLE="Weekly marathon evals: red lane needs triage"
          BODY_FILE=/tmp/marathon-report.md
          [ -s "$BODY_FILE" ] || echo "Marathon report missing; run: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}" > "$BODY_FILE"
          EXISTING=$(gh issue list --repo "$GITHUB_REPOSITORY" --state open --search "in:title \"$TITLE\"" --json number --jq '.[0].number // empty')
          if [ -n "$EXISTING" ]; then
            gh issue comment "$EXISTING" --repo "$GITHUB_REPOSITORY" --body-file "$BODY_FILE"
            echo "commented on #$EXISTING"
          else
            gh issue create --repo "$GITHUB_REPOSITORY" --title "$TITLE" --body-file "$BODY_FILE"
          fi

      - name: Close the tracking issue on a green run
        if: always() && github.ref == 'refs/heads/main' && steps.reconcile.outputs.exit == '0' && needs.eval-slices.result == 'success'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          TITLE="Weekly marathon evals: red lane needs triage"
          EXISTING=$(gh issue list --repo "$GITHUB_REPOSITORY" --state open --search "in:title \"$TITLE\"" --json number --jq '.[0].number // empty')
          if [ -n "$EXISTING" ]; then
            gh issue close "$EXISTING" --repo "$GITHUB_REPOSITORY" --comment "Green marathon run: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}"
          fi

      - name: Fail the workflow when reconciliation failed
        if: always() && (steps.reconcile.outputs.exit != '0' || needs.eval-slices.result != 'success')
        run: exit 1