name: Eval sweep
# The weekly off-ship qualification sweep (docs/TESTING_INTERNALS.md#ship-measure-sweep):
# `ship-measure sweep` ranks the gate cases that cost the gate's all-green
# probability most (eval:pass-rates history on main) and measures the top K
# alone at their kind's N on this ref's head, with /ship's runner and
# measurement bar. Every trial is diagnostic: no verdict, no pass-rate
# history. The weekly spend cap (ship_measure_sweep_budget_usd, $150) is shared
# with every sweep report of the last 7 days, downloaded before the sweep runs.
# This workflow only reads: it never pushes, commits or opens a pull request;
# an agent fixes from the uploaded report. Pinned by
# test/eval-sweep-workflow.test.ts.
on:
  schedule:
    - cron: '0 12 * * 1'  # Monday 12:00 UTC, after the 06:00 periodic census
  workflow_dispatch:
    inputs:
      k:
        description: 'Cases to measure (default: ship_measure_sweep_cases, 5)'
        type: string
        default: ''
      cap_usd:
        description: 'Weekly spend cap in USD, shared with the last 7 days of sweeps (default: ship_measure_sweep_budget_usd, 150)'
        type: string
        default: ''
      dry_run:
        description: 'Plan and estimate only ($0)'
        type: boolean
        default: false

# One sweep at a time across every ref, never cancelled: two concurrent runs
# would both read the same week's spend and could exceed the cap together.
concurrency:
  group: eval-sweep
  cancel-in-progress: false

permissions:
  contents: read

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

jobs:
  image:
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    permissions:
      contents: read
      packages: read
    outputs:
      image-ref: ${{ steps.digest.outputs.ref }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          persist-credentials: false

      - id: meta
        # The same content-hash tag the eval workflows build and push
        # (test/ci-image-tag-binding.test.ts pins the identical input list).
        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 }}

      # Run the published image by digest: the digest is part of every
      # measurement's pooling identity (GSTACK_CI_IMAGE). The sweep never
      # builds an image; evals.yml and evals-periodic.yml publish it.
      - name: Resolve the published CI image digest
        id: digest
        env:
          TAG: ${{ steps.meta.outputs.tag }}
        run: |
          set -euo pipefail
          if ! digest=$(docker buildx imagetools inspect "$TAG" --format '{{json .Manifest.Digest}}' | tr -d '"'); then
            echo "::error::CI image $TAG is not published; run evals-periodic.yml (or an evals.yml PR run) to build it, then rerun the sweep"
            exit 1
          fi
          echo "ref=${IMAGE}@${digest}" >> "$GITHUB_OUTPUT"

  sweep:
    runs-on: ubicloud-standard-16
    needs: image
    timeout-minutes: 240
    permissions:
      contents: read
      actions: read
      packages: read
    container:
      image: ${{ needs.image.outputs.image-ref }}
      credentials:
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
      options: --user runner
    env:
      EVALS_RUN_ID: ci-${{ github.run_id }}-${{ github.run_attempt }}-eval-sweep
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Full history: selection walks git at module load (evals-periodic.yml).
          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: 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

      # Same as evals-periodic.yml: the image ships the pinned Codex CLI
      # without a credential; Codex cases see it only through the shard runner.
      - name: Authenticate the Codex CLI
        shell: bash
        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

      # The weekly cap counts every sweep of the last 7 days. A listing failure
      # fails the job before any spend; a run without a report spent nothing.
      - name: Download this week's earlier sweep reports
        shell: bash
        env:
          GH_TOKEN: ${{ github.token }}
          PRIOR: /tmp/prior-sweeps
        run: |
          set -euo pipefail
          mkdir -p "$PRIOR"
          since=$(date -u -d '7 days ago' +%Y-%m-%dT%H:%M:%SZ)
          ids=$(gh run list --repo "$GITHUB_REPOSITORY" --workflow eval-sweep.yml --limit 100 --json databaseId,createdAt \
            --jq ".[] | select(.createdAt >= \"$since\") | .databaseId")
          for id in $ids; do
            [ "$id" = "$GITHUB_RUN_ID" ] && continue
            gh run download "$id" --repo "$GITHUB_REPOSITORY" --name ship-measure-sweep-report --dir "$PRIOR/$id" 2>/dev/null \
              || echo "run $id: no sweep report (nothing charged)"
          done

      - name: Run the sweep
        shell: bash
        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
          GH_TOKEN: ${{ github.token }}
          GSTACK_CI_IMAGE: ${{ needs.image.outputs.image-ref }}
          SWEEP_OUT: /tmp/ship-measure-sweep
          SWEEP_PRIOR: /tmp/prior-sweeps
          SWEEP_K: ${{ inputs.k }}
          SWEEP_CAP_USD: ${{ inputs.cap_usd }}
          SWEEP_DRY_RUN: ${{ inputs.dry_run }}
        run: |
          set -euo pipefail
          args=(--out "$SWEEP_OUT" --prior "$SWEEP_PRIOR" --jobs 4)
          if [ -n "${SWEEP_K:-}" ]; then args+=(--k "$SWEEP_K"); fi
          if [ -n "${SWEEP_CAP_USD:-}" ]; then args+=(--cap-usd "$SWEEP_CAP_USD"); fi
          if [ "${SWEEP_DRY_RUN:-false}" = "true" ]; then args+=(--dry-run); fi
          bun run scripts/ship-measure.ts sweep "${args[@]}"

      - name: Upload the sweep report
        if: always()
        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7
        with:
          name: ship-measure-sweep-report
          path: |
            /tmp/ship-measure-sweep/sweep-*/sweep-report.json
            /tmp/ship-measure-sweep/sweep-*/sweep-report.md
          if-no-files-found: ignore
          retention-days: 30

      - name: Upload the sweep captures
        if: always()
        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7
        with:
          name: ship-measure-sweep-captures
          include-hidden-files: true
          path: /tmp/ship-measure-sweep
          if-no-files-found: ignore
          retention-days: 14

      - name: Note a sweep that wrote no report
        if: failure()
        run: echo "The sweep failed before writing its report; see the Run the sweep step log." >> "$GITHUB_STEP_SUMMARY"