name: Periodic Evals
# The weekly coverage contract: EVERY periodic-tier paid test runs (EVALS_ALL,
# minus the reasoned excludes in test/helpers/periodic-exclude-data.ts), so
# tests can't rot invisibly — the class where the autoplan-dual-voice E2E was
# silently broken for months until a lucky local diff selected it. Engine:
# scripts/test-paid-shards.ts (the same runner local eval:bg:periodic uses):
# one planner manifest, 6 executor slices, and a FAIL-CLOSED report — a slice
# whose artifact never landed is a failure, not an absence. The gate-census
# job is the weekly EVALS_ALL backstop for the gate tier (PR lanes are
# diff-billed, so without it the full gate census might never execute
# anywhere); the hollow-shard guard (exit 0 + zero executed tests under
# EVALS_ALL fails) makes both lanes census-health checks, not just test runs.
on:
  schedule:
    - cron: '0 6 * * 1'  # Monday 6 AM UTC (ci-image prebuilds at 4 AM)
  workflow_dispatch:

concurrency:
  group: evals-periodic
  cancel-in-progress: true

env:
  IMAGE: ghcr.io/${{ github.repository }}/ci

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 — 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
    needs: build-image
    timeout-minutes: 10
    permissions:
      contents: read
      packages: read
    container:
      image: ${{ needs.build-image.outputs.image-tag }}
      credentials:
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
      options: --user runner
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          persist-credentials: false

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

      - name: Emit run manifest (ALL periodic tests minus reasoned excludes)
        env:
          EVALS_ALL: "1"
        run: EVALS_TIER=periodic bun run scripts/test-paid-shards.ts --tier periodic --emit-plan /tmp/paid-plan/manifest.json --slices 6

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

  eval-slices:
    runs-on: ubicloud-standard-8
    needs: [build-image, plan-slices]
    # ~70 shards / 6 slices / EVALS_JOBS=2, 1800s shard wall — worst case is
    # bounded by ceil(12/2) x 30min; typical is far under.
    timeout-minutes: 200
    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
      matrix:
        slice: [1, 2, 3, 4, 5, 6]
    steps:
      - 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: paid-plan
          path: /tmp/paid-plan

      - name: Run slice ${{ matrix.slice }}/6
        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: "2"
          EVALS_CONCURRENCY: "2"
          GSTACK_EVAL_DIR: /tmp/paid-slice-results
        run: EVALS_TIER=periodic bun run scripts/test-paid-shards.ts --tier periodic --plan /tmp/paid-plan/manifest.json --slice ${{ matrix.slice }}

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

      - name: Upload shard logs on failure
        if: failure()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: paid-slice-${{ matrix.slice }}-logs
          # 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

  # Weekly EVALS_ALL gate-tier census: PR lanes are diff-billed, so without
  # this the full gate census might never execute anywhere and the selector's
  # blind spots rot invisibly. Census health, not selector correctness —
  # selector logic has free synthetic-diff contract tests.
  gate-census:
    runs-on: ubicloud-standard-8
    needs: build-image
    timeout-minutes: 300
    permissions:
      contents: read
      packages: read
    container:
      image: ${{ needs.build-image.outputs.image-tag }}
      credentials:
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
      options: --user runner
    steps:
      - 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

      - name: Run full gate census
        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_ALL: "1"
          EVALS_JOBS: "4"
          EVALS_CONCURRENCY: "2"
          GSTACK_EVAL_DIR: /tmp/gate-census-results
        run: EVALS_TIER=gate bun run scripts/test-paid-shards.ts --tier gate

      - name: Upload census results
        if: always()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
        with:
          name: gate-census
          path: /tmp/gate-census-results
          retention-days: 90

  report:
    runs-on: ubicloud-standard-2
    needs: [plan-slices, eval-slices, gate-census]
    # always(): the report must run (and FAIL) when an executor died — a
    # missing slice artifact reading as green is the class this lane kills.
    if: always() && needs.plan-slices.result == 'success'
    timeout-minutes: 10
    permissions:
      contents: read
      # The failure notification below upserts a tracking issue via
      # `gh api /issues` — gated by the issues permission.
      issues: write
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          persist-credentials: false

      - uses: oven-sh/setup-bun@0c5077e51419868618aeaa5fe8019c62421857d6 # v2
        with:
          bun-version: 1.3.13

      - run: bun install --frozen-lockfile

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

      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
        with:
          pattern: paid-slice-[0-9]*
          path: /tmp/paid-report
          merge-multiple: true

      - name: Reconcile slices against the manifest (fail-closed)
        id: reconcile
        run: |
          set +e
          EVALS_TIER=periodic bun run scripts/test-paid-shards.ts --tier periodic --report /tmp/paid-report | tee /tmp/report.txt
          # PIPESTATUS[0], NOT $?: GitHub's default run-step shell is
          # `bash -e {0}` with NO pipefail, so $? after the pipe is tee's
          # exit (always 0) — the fail-closed gate was silently fail-open
          # (caught by the ship review army; the wiring test now pins this).
          echo "exit=${PIPESTATUS[0]}" >> "$GITHUB_OUTPUT"

      # A red weekly lane nobody must action is waste — upsert ONE tracking
      # issue (never a new issue per week) with the reconciliation output, so
      # failures have an owner-visible artifact with history in one place.
      - name: Upsert tracking issue on failure
        if: steps.reconcile.outputs.exit != '0' || needs.gate-census.result == 'failure'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          TITLE="Weekly periodic evals: red lane needs triage"
          BODY_FILE=/tmp/issue-body.md
          {
            echo "Automated weekly report — run: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}"
            echo
            echo "- periodic reconciliation exit: ${{ steps.reconcile.outputs.exit }}"
            echo "- gate census job: ${{ needs.gate-census.result }}"
            echo
            echo '```'
            tail -c 6000 /tmp/report.txt 2>/dev/null || echo "(no reconciliation output)"
            echo '```'
            echo
            echo "Exclusion policy: test/helpers/periodic-exclude-data.ts (every entry needs reason + tracking; removal re-activates the file next week)."
          } > "$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: Fail the workflow when reconciliation failed
        if: steps.reconcile.outputs.exit != '0'
        run: exit 1