# PR gate: feature → main. Two-phase cascade:
#   Phase 1 (cheap, no Postgres): lint, format, typecheck, knip, cycles, unit
#   Phase 2 (expensive, Postgres; needs phase 1 green/skipped): int, build, e2e
# Job-level skips come from the `scope` classifier (scripts/ci-scope.mjs). A
# phase-1 failure skips phase 2 via `needs` + explicit if. `migration-lock`
# stays parallel to phase 1 (cheap, independent).
#
# High-risk diffs (schema, lockfile, classifiers — see
# scripts/lib/test-affected-core.mjs) force full unit/int/e2e. Push to main
# always runs the full suite in ci.yml (no affected skips).
name: CI (PR)

on:
  pull_request:
    branches: [main]

concurrency:
  group: ci-pr-${{ github.event.pull_request.number }}
  cancel-in-progress: true

permissions:
  contents: read
  actions: write
  pull-requests: read

env:
  DATABASE_URL: postgresql://teqo:teqo@localhost:5432/teqo_test
  PAYLOAD_SECRET: test-only-secret-not-used-in-production
  NEXT_PUBLIC_SITE_URL: http://localhost:3000

jobs:
  scope:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    outputs:
      code_mode: ${{ steps.classify.outputs.code_mode }}
      build_mode: ${{ steps.classify.outputs.build_mode }}
      test_mode: ${{ steps.classify.outputs.test_mode }}
      e2e_mode: ${{ steps.classify.outputs.e2e_mode }}
      e2e_specs: ${{ steps.classify.outputs.e2e_specs }}
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - name: Classify PR blast radius
        id: classify
        env:
          GITHUB_BASE_REF: ${{ github.base_ref }}
        run: |
          result=$(node scripts/ci-scope.mjs)
          echo "scope: $(echo "$result" | jq -c '{code:.code.mode,build:.build.mode,test:.test.mode,e2e:.e2e.mode,reason:{code:.code.reason,build:.build.reason,test:.test.reason,e2e:.e2e.reason}}')"
          echo "code_mode=$(echo "$result" | jq -r .code.mode)" >> "$GITHUB_OUTPUT"
          echo "build_mode=$(echo "$result" | jq -r .build.mode)" >> "$GITHUB_OUTPUT"
          echo "test_mode=$(echo "$result" | jq -r .test.mode)" >> "$GITHUB_OUTPUT"
          echo "e2e_mode=$(echo "$result" | jq -r .e2e.mode)" >> "$GITHUB_OUTPUT"
          echo "e2e_specs=$(echo "$result" | jq -r '[.e2e.specs[] | "tests/e2e/" + . + ".e2e.spec.ts"] | join(" ")')" >> "$GITHUB_OUTPUT"
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  lint:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v5
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - name: Check test file locations
        run: node scripts/check-test-locations.mjs
      - run: pnpm lint
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  format:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v5
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - run: pnpm format:check
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  typecheck:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    needs: [scope]
    if: needs.scope.outputs.code_mode != 'none'
    steps:
      - uses: actions/checkout@v5
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - run: pnpm typecheck
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  knip:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    needs: [scope]
    if: needs.scope.outputs.code_mode != 'none'
    steps:
      - uses: actions/checkout@v5
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - run: pnpm knip
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  cycles:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    needs: [scope]
    if: needs.scope.outputs.code_mode != 'none'
    steps:
      - uses: actions/checkout@v5
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - run: pnpm check:cycles
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  unit:
    runs-on: ubuntu-latest
    timeout-minutes: 15
    needs: [scope]
    if: needs.scope.outputs.test_mode != 'none'
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile

      - name: Unit tests (full suite)
        if: needs.scope.outputs.test_mode == 'full'
        run: pnpm test:unit

      - name: Unit tests (changed since PR base)
        if: needs.scope.outputs.test_mode == 'changed'
        run: pnpm test:unit -- --changed origin/${{ github.base_ref }} --passWithNoTests
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  int:
    runs-on: ubuntu-latest
    timeout-minutes: 25
    needs: [scope, lint, format, typecheck, knip, cycles, unit]
    if: |
      always()
      && !cancelled()
      && needs.scope.outputs.test_mode != 'none'
      && needs.lint.result == 'success'
      && needs.format.result == 'success'
      && (needs.typecheck.result == 'success' || needs.typecheck.result == 'skipped')
      && (needs.knip.result == 'success' || needs.knip.result == 'skipped')
      && (needs.cycles.result == 'success' || needs.cycles.result == 'skipped')
      && (needs.unit.result == 'success' || needs.unit.result == 'skipped')
    services:
      postgres:
        image: postgres:17-alpine
        env:
          POSTGRES_USER: teqo
          POSTGRES_PASSWORD: teqo
          POSTGRES_DB: teqo_test
        ports:
          - 5432:5432
        options: >-
          --health-cmd "pg_isready -U teqo"
          --health-interval 5s
          --health-timeout 5s
          --health-retries 12
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - run: pnpm migrate
      - run: pnpm db:seed:minimal

      - name: Integration tests (full suite)
        if: needs.scope.outputs.test_mode == 'full'
        run: pnpm test:int

      - name: Integration tests (changed since PR base)
        if: needs.scope.outputs.test_mode == 'changed'
        run: pnpm test:int -- --changed origin/${{ github.base_ref }} --passWithNoTests
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  build:
    runs-on: ubuntu-latest
    timeout-minutes: 25
    needs: [scope, lint, format, typecheck, knip, cycles, unit]
    if: |
      always()
      && !cancelled()
      && needs.scope.outputs.build_mode != 'none'
      && needs.lint.result == 'success'
      && needs.format.result == 'success'
      && (needs.typecheck.result == 'success' || needs.typecheck.result == 'skipped')
      && (needs.knip.result == 'success' || needs.knip.result == 'skipped')
      && (needs.cycles.result == 'success' || needs.cycles.result == 'skipped')
      && (needs.unit.result == 'success' || needs.unit.result == 'skipped')
    services:
      postgres:
        image: postgres:17-alpine
        env:
          POSTGRES_USER: teqo
          POSTGRES_PASSWORD: teqo
          POSTGRES_DB: teqo_test
        ports:
          - 5432:5432
        options: >-
          --health-cmd "pg_isready -U teqo"
          --health-interval 5s
          --health-timeout 5s
          --health-retries 12
    steps:
      - uses: actions/checkout@v5
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - name: Build (against the local service database)
        run: pnpm build
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  e2e:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    needs: [scope, lint, format, typecheck, knip, cycles, unit]
    if: |
      always()
      && !cancelled()
      && needs.scope.outputs.e2e_mode != 'none'
      && needs.lint.result == 'success'
      && needs.format.result == 'success'
      && (needs.typecheck.result == 'success' || needs.typecheck.result == 'skipped')
      && (needs.knip.result == 'success' || needs.knip.result == 'skipped')
      && (needs.cycles.result == 'success' || needs.cycles.result == 'skipped')
      && (needs.unit.result == 'success' || needs.unit.result == 'skipped')
    services:
      postgres:
        image: postgres:17-alpine
        env:
          POSTGRES_USER: teqo
          POSTGRES_PASSWORD: teqo
          POSTGRES_DB: teqo_test
        ports:
          - 5432:5432
        options: >-
          --health-cmd "pg_isready -U teqo"
          --health-interval 5s
          --health-timeout 5s
          --health-retries 12
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - uses: pnpm/action-setup@v6
      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
      - run: pnpm install --frozen-lockfile
      - name: Install Playwright chromium
        run: pnpm exec playwright install --with-deps chromium
      - run: pnpm migrate
      - run: pnpm db:seed:minimal
      - name: Build for e2e
        run: pnpm build
        env:
          NEXT_DIST_DIR: .next/e2e

      - name: E2E tests (full suite)
        if: needs.scope.outputs.e2e_mode == 'full'
        run: pnpm test:e2e

      - name: E2E tests (manifest-selected specs)
        if: needs.scope.outputs.e2e_mode == 'selected'
        run: pnpm test:e2e -- ${{ needs.scope.outputs.e2e_specs }}
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  plans-only-closes:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - name: Block Closes/Fixes/Resolves on plans-only PRs
        env:
          GITHUB_BASE_REF: ${{ github.base_ref }}
          PR_BODY: ${{ github.event.pull_request.body }}
        run: node scripts/check-plans-only-pr-closes.mjs
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  migration-lock:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@v5
      - name: Count open PRs touching schema files
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}
        run: |
          set -euo pipefail
          count=$(gh pr list --state open --limit 100 --json number,files \
            --jq '[.[] | select(.files != null and ([.files[].path | test("^(src/migrations/|src/payload-types.ts$|payload-types.ts$)")] | any))] | length')
          echo "Open schema-touching PRs: $count"
          if [ "$count" -gt 1 ]; then
            echo "::error::More than one open PR touches src/migrations/ or payload-types.ts. Merge or close the other first."
            exit 1
          fi
      - name: Cancel workflow on failure
        if: failure()
        uses: ./.github/actions/cancel-workflow-on-failure

  checks:
    name: checks
    runs-on: ubuntu-latest
    needs:
      - scope
      - lint
      - format
      - typecheck
      - knip
      - cycles
      - unit
      - int
      - build
      - e2e
      - migration-lock
      - plans-only-closes
    if: always()
    steps:
      - name: All cascade checks green
        env:
          NEEDS: ${{ toJSON(needs) }}
        run: |
          set -euo pipefail
          echo "$NEEDS" | jq -e '
            to_entries
            | all(.value.result == "success" or .value.result == "skipped")
          '