name: Core Build (no extensions)

# Split out of a single serial job that took 7m43s wall-clock: npm ci 24s, lint
# ratchet 1m29s, build 2m00s, unit tests 3m31s, ratchets ~10s. None of those
# stages needed the previous one's output, so they were serial only by
# accident. Running them as independent jobs (and sharding the 897-file unit
# suite four ways) puts the critical path on `build` at roughly 2m30s.
#
# The prologue each job needs is in .github/actions/setup-core.

on: [pull_request]

# Six concurrent jobs per push makes stale runs far more expensive than they
# were when this was one job, and a superseded push has nothing worth finishing.
concurrency:
  group: core-build-${{ github.ref }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  checks:
    name: Checks
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Nothing here pushes, so leaving the token in .git/config only widens
          # what a compromised dependency in the build could reach.
          persist-credentials: false
      - uses: ./.github/actions/setup-core

      - name: Verify skill bodies are in sync with the seed migration
        # Fails if a .claude/skills/**/SKILL.md changed without regenerating the
        # seed migration (npm run skills:generate). Keeps prod skill content from
        # silently drifting out of sync. No DB needed: reads files + manifest.
        run: npm run skills:check

      - name: Verify taxonomy registry is in sync with the element lists
        # Fails if dev_docs/bokslut/taxonomi/** changed without regenerating
        # lib/bokslut/ixbrl/taxonomy/generated/ (npm run taxonomy:generate).
        # The iXBRL generator emits facts strictly from the generated registry,
        # so drift here means filings tagged against a stale concept set.
        run: npm run taxonomy:check

      - name: Verify the accounted-api agent skill is in sync with the registry
        # Fails if a v1 endpoint / registry schema / overlay changed without
        # regenerating skills/accounted-api (npm run apiskill:generate). The
        # skill is the installable API reference for external coding agents;
        # drift here means agents integrate against stale endpoint contracts.
        run: npm run apiskill:check

      - name: Lint ratchet (no new ESLint errors)
        # `npm run lint` was never wired into CI, so ~60 legacy errors
        # accumulated. This ratchet (sibling of check:guards) fails only when
        # a PR ADDS an error beyond scripts/checks/eslint-baseline.json; the
        # baseline ratchets down as legacy errors get fixed.
        run: npm run check:lint

      - name: Typecheck ratchet (no new TypeScript errors)
        # `npm test` does not typecheck: vitest transpiles and discards types,
        # so a type error passes all 18 000 tests and only surfaces in the
        # build. That happened twice on 2026-08-27. This also covers __tests__
        # files, which the Next.js build never compiles, so it is not merely a
        # faster copy of the build job.
        #
        # Baselined per FILE in scripts/checks/typecheck-baseline.json (539
        # legacy errors across 83 files, all in test files) and ratchets down.
        # Per-file rather than per-error-code on purpose: a code-keyed budget
        # would let a real regression hide behind a legacy fix elsewhere.
        run: npm run check:types

      - name: Antipattern ratchet (no new MFA-bypassing routes / naive öre-rounding)
        # Fails only if a PR ADDS a route that hand-rolls supabase.auth.getUser()
        # instead of the MFA-enforcing guard, or a new Math.round(x*100)/100.
        # Baseline lives in scripts/checks/antipatterns-baseline.json and ratchets
        # down as the A1 (route auth) and D1 (rounding) migrations land.
        run: npm run check:guards

      - name: Validate konteringspaket catalogue
        # The system booking templates are data files under packs/ rather than
        # rows frozen inside a migration. This gate is what makes that safe: it
        # checks the schema, that every BAS account actually exists in the 2026
        # chart, and that each pack BALANCES when applied through the real
        # applyTemplate(). PR #1321 shipped seeded reference data that
        # contradicted the engine; that class of bug is structurally valid and
        # only a semantic check catches it.
        run: npm run validate:packs

      - name: Validate community registry
        # registry/ is the public source of truth for gnubok.se/community/registry
        # and takes entries by PR from outside the team. The gate checks the
        # frontmatter the website build consumes, and rejects JSX/import/export
        # in entry bodies: the site renders bodies through MDX, which would
        # execute those at build time.
        run: npm run validate:registry

      - name: Check no core imports from extensions
        run: |
          VIOLATIONS=$(grep -r "from '@/extensions/" lib/ app/api/ components/ --include="*.ts" --include="*.tsx" \
            | grep -v "app/api/extensions/" \
            | grep -v "components/extensions/" \
            | grep -v "lib/extensions/_generated/" \
            | grep -v "lib/extensions/loader.ts" || true)
          if [ -n "$VIOLATIONS" ]; then
            echo "ERROR: Core code imports from @/extensions/:"
            echo "$VIOLATIONS"
            exit 1
          fi

  build:
    name: Build (zero extensions)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Nothing here pushes, so leaving the token in .git/config only widens
          # what a compromised dependency in the build could reach.
          persist-credentials: false
      - uses: ./.github/actions/setup-core
      - run: npm run build
        env:
          # The Next.js build worker OOMs on the runner's default Node heap
          # since 2026-08-19 (bundle growth crossed the default old-space
          # ceiling; the first branch containing the whole day's merges was the
          # first to hit it). Public-repo runners have 16 GB, give the build 8.
          NODE_OPTIONS: --max-old-space-size=8192

  test:
    # 897 unit test files (11,341 tests) take 3m31s in one process. Measured
    # locally, four shards split them 225/224/224/224 with the slowest at 64s,
    # which puts this comfortably under the build job so it stops being the
    # critical path. Vitest hard-errors when the shard count exceeds the
    # resolved file count, which is nowhere near a concern at this size.
    name: Unit tests (${{ matrix.shard }}/4)
    runs-on: ubuntu-latest
    strategy:
      # One shard failing should not hide failures in the other three: a red PR
      # is more useful when it lists every broken test, not just the first.
      fail-fast: false
      matrix:
        shard: [1, 2, 3, 4]
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Nothing here pushes, so leaving the token in .git/config only widens
          # what a compromised dependency in the build could reach.
          persist-credentials: false
      - uses: ./.github/actions/setup-core
      # Via env rather than interpolated straight into the shell body: the value
      # is a static matrix integer and harmless, but keeping every `run:` free of
      # ${{ }} is the rule that makes the template-injection audit meaningful.
      - run: npm test -- --shard="$SHARD/4"
        env:
          SHARD: ${{ matrix.shard }}

  core-build:
    # One stable check name covering all six jobs above, so the PR checks list
    # (and any future required-status-check rule) has a single thing to read
    # rather than a shard-numbered matrix. `needs` alone would not be enough:
    # a needed job that is skipped or cancelled does not fail its dependents,
    # so the results are asserted explicitly.
    name: Core Build
    if: always()
    needs: [checks, build, test]
    runs-on: ubuntu-latest
    steps:
      - name: Assert every core job succeeded
        env:
          CHECKS: ${{ needs.checks.result }}
          BUILD: ${{ needs.build.result }}
          TEST: ${{ needs.test.result }}
        run: |
          set -euo pipefail
          echo "checks=$CHECKS build=$BUILD test=$TEST"
          failed=0
          for r in "$CHECKS" "$BUILD" "$TEST"; do
            [ "$r" = "success" ] || failed=1
          done
          if [ "$failed" -ne 0 ]; then
            echo "::error::One or more core-build jobs did not succeed"
            exit 1
          fi