name: pg-real tests

on: [pull_request]

# Neither job writes anything back: they read the repo, stand up a throwaway
# Postgres, and run tests. Without this block both inherit the repository's
# default token permissions, which are broader than that.
permissions:
  contents: read

concurrency:
  group: pg-real-${{ github.ref }}
  cancel-in-progress: true

jobs:
  coverage-gate:
    # Enforces the database.md rule: a migration touching a trigger/RPC/RLS/
    # DEFERRABLE must come with a *.pg.test.ts change. Previously instruction-
    # only. Escape hatch: `-- pg-test: covered-by <path>` / `-- pg-test: skip
    # (<reason>)` comments inside the migration.
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Full history so the merge-base with the PR base branch exists.
          fetch-depth: 0
          persist-credentials: false
      - uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
        with:
          node-version: 20
      - name: Require pg-real coverage for trigger/RPC/RLS migrations
        env:
          PG_GATE_BASE: origin/${{ github.base_ref }}
        run: node scripts/check-pg-test-coverage.mjs

  # Proves that an EXISTING database survives the PR's migrations, which the
  # pg-real job below cannot: it applies every migration to an empty database,
  # so a NOT NULL, a CHECK, a unique index or a backfill passes trivially
  # against zero rows and can still fail (or silently corrupt) on production.
  #
  # Shape: schema at the merge-base -> seed real rows -> apply ONLY the new
  # migrations -> assert the rows are intact. A PR that adds no migration skips
  # straight past the apply step and costs one cheap no-op run.
  pg-upgrade:
    runs-on: ubuntu-latest

    services:
      postgres:
        image: supabase/postgres:15.8.1.060
        env:
          POSTGRES_PASSWORD: postgres
        ports:
          - 5432:5432
        options: >-
          --health-cmd "pg_isready -U postgres"
          --health-interval 5s
          --health-timeout 5s
          --health-retries 20

    env:
      DATABASE_URL: postgresql://postgres:postgres@localhost:5432/postgres
      PGPASSWORD: postgres

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          # Full history so the merge-base with the PR base branch exists.
          fetch-depth: 0
          persist-credentials: false

      - name: Install psql client
        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends postgresql-client

      - name: Identify the migrations this PR adds
        id: newmig
        env:
          BASE_REF: origin/${{ github.base_ref }}
        run: |
          set -euo pipefail
          MERGE_BASE=$(git merge-base "$BASE_REF" HEAD)
          echo "merge_base=$MERGE_BASE" >> "$GITHUB_OUTPUT"
          echo "Merge base: $MERGE_BASE"

          # Migrations present at HEAD but not at the merge base. Uses the git
          # tree, not the filesystem, so a rebase or a merge commit cannot make
          # an already-shipped migration look new.
          git ls-tree -r --name-only HEAD -- supabase/migrations \
            | grep '\.sql$' | sort > /tmp/head-migrations.txt
          git ls-tree -r --name-only "$MERGE_BASE" -- supabase/migrations \
            | grep '\.sql$' | sort > /tmp/base-migrations.txt
          comm -23 /tmp/head-migrations.txt /tmp/base-migrations.txt > /tmp/new-migrations.txt

          COUNT=$(wc -l < /tmp/new-migrations.txt | tr -d ' ')
          echo "count=$COUNT" >> "$GITHUB_OUTPUT"
          echo "New migrations ($COUNT):"
          cat /tmp/new-migrations.txt

      - name: Bootstrap storage schema
        if: steps.newmig.outputs.count != '0'
        run: psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -q -f tests/pg/bootstrap.sql

      - name: Apply the schema as it stands at the merge base
        if: steps.newmig.outputs.count != '0'
        env:
          MERGE_BASE: ${{ steps.newmig.outputs.merge_base }}
        run: |
          set -euo pipefail
          # Read each migration out of the merge-base tree rather than the
          # working tree: a PR that EDITS a shipped migration (forbidden, but
          # this job must not be the thing that hides it) still gets the
          # original applied here, so the edit shows up as a failure below.
          while read -r f; do
            echo "Applying (base) $f"
            git show "$MERGE_BASE:$f" | psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -q
          done < /tmp/base-migrations.txt

      - name: Seed a real company with posted verifikat
        if: steps.newmig.outputs.count != '0'
        run: psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -q -f tests/pg/upgrade/seed.sql

      - name: Apply ONLY the new migrations, against existing data
        if: steps.newmig.outputs.count != '0'
        run: |
          set -euo pipefail
          while read -r f; do
            echo "Applying (new) $f"
            psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -q -f "$f"
          done < /tmp/new-migrations.txt

      - name: Assert the existing data survived
        if: steps.newmig.outputs.count != '0'
        run: psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -f tests/pg/upgrade/assert.sql

      - name: No migrations in this PR
        if: steps.newmig.outputs.count == '0'
        run: echo "This PR adds no migration; nothing to upgrade-test."

  pg-real:
    runs-on: ubuntu-latest

    services:
      postgres:
        # Supabase image ships the auth schema, auth.uid(), and the extensions
        # (uuid-ossp, pg_cron, btree_gist, vector) this repo's migrations need.
        # Plain postgres:15 would require manual bootstrap SQL.
        image: supabase/postgres:15.8.1.060
        env:
          POSTGRES_PASSWORD: postgres
        ports:
          - 5432:5432
        options: >-
          --health-cmd "pg_isready -U postgres"
          --health-interval 5s
          --health-timeout 5s
          --health-retries 20

    env:
      DATABASE_URL: postgresql://postgres:postgres@localhost:5432/postgres
      PGPASSWORD: postgres

    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
        with:
          persist-credentials: false

      # Deliberately no `cache: npm` here. This workflow runs on pull_request
      # only, so the cache is never written on main, and GitHub scopes caches
      # by ref: every PR uploaded its own 284 MB copy under an identical key
      # that no other PR could ever restore. Fourteen dead copies (4 GB, 40% of
      # the repo quota) accumulated in a single day. If this is ever worth
      # caching again, it has to be actions/cache/save on main plus
      # actions/cache/restore here, which is the only shape that gets hits.
      - uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
        with:
          node-version: 20

      - run: npm ci

      - name: Install psql client
        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends postgresql-client

      - name: Bootstrap storage schema
        # The supabase/postgres image ships a partial storage schema; the rest
        # is provisioned by the storage-api service at runtime, which we do
        # not run in CI. This aligns the schema with what migrations expect.
        run: psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -q -f tests/pg/bootstrap.sql

      - name: Apply migrations
        run: |
          set -euo pipefail
          shopt -s nullglob
          files=(supabase/migrations/*.sql)
          if [ ${#files[@]} -eq 0 ]; then
            echo "No migration files found"
            exit 1
          fi
          for f in "${files[@]}"; do
            echo "Applying $f"
            psql "$DATABASE_URL" -v ON_ERROR_STOP=1 -q -f "$f"
          done

      - run: npm run test:pg