e2e.yml

name: E2E Tests

on:
  workflow_dispatch:
  push:
    branches: [develop, main]
    paths:
      - 'frontend/**'
      - 'services/**'
      - '.github/workflows/e2e.yml'
  pull_request:
    branches: [develop, main]
    paths:
      - 'frontend/**'
      - 'services/**'
      - '.github/workflows/e2e.yml'

permissions:
  contents: read

jobs:
  # ===========================================================================
  # Build: compile backend binary and frontend assets once, share via artifacts
  # ===========================================================================
  build:
    name: Build
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Set up Go
        uses: actions/setup-go@v6
        with:
          go-version: '1.26.0'
          cache: true

      - name: Set up buf
        uses: bufbuild/buf-setup-action@v1
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}

      - name: Set up Node.js
        uses: actions/setup-node@v6
        with:
          node-version: '22'
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Generate protobuf files
        run: buf generate

      - name: Build proto FileDescriptorSet
        run: buf build api/proto -o cmd/meridian/descriptor.binpb

      - name: Build meridian binary
        run: CGO_ENABLED=0 go build -o ./dist/meridian ./cmd/meridian/

      - name: Build seed-dev binary
        run: CGO_ENABLED=0 go build -o ./dist/seed-dev ./cmd/seed-dev/

      - name: Install frontend dependencies
        working-directory: frontend
        run: npm ci

      - name: Generate frontend protobuf files
        working-directory: frontend
        run: npm run generate

      - name: Build frontend
        working-directory: frontend
        env:
          VITE_E2E_MODE: 'true'
          VITE_API_BASE_URL: 'http://localhost:5173'
        run: npx vite build

      - name: Upload backend binaries
        uses: actions/upload-artifact@v7
        with:
          name: meridian-binary
          path: |
            dist/meridian
            dist/seed-dev
          retention-days: 1

      - name: Upload frontend build
        uses: actions/upload-artifact@v7
        with:
          name: frontend-dist
          path: frontend/dist/
          retention-days: 1

  # ===========================================================================
  # E2E Shards: run Playwright tests in parallel across 4 runners
  # ===========================================================================
  e2e:
    name: 'E2E Shard ${{ matrix.shardIndex }}/4'
    runs-on: ubuntu-latest
    timeout-minutes: 25
    needs: build
    strategy:
      fail-fast: false
      matrix:
        shardIndex: [1, 2, 3, 4]

    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Download backend binary
        uses: actions/download-artifact@v8
        with:
          name: meridian-binary
          path: dist/

      - name: Make binaries executable
        run: chmod +x dist/meridian dist/seed-dev

      - name: Download frontend build
        uses: actions/download-artifact@v8
        with:
          name: frontend-dist
          path: frontend/dist/

      - name: Start CockroachDB
        run: |
          docker run -d \
            --name cockroachdb \
            -p 26257:26257 \
            cockroachdb/cockroach:latest-v24.1 \
            start-single-node --insecure
          # Wait for CockroachDB to be ready (up to 60s)
          for i in $(seq 1 30); do
            if docker exec cockroachdb cockroach sql --insecure -e 'SELECT 1' >/dev/null 2>&1; then
              echo "CockroachDB is ready"
              break
            fi
            if [ "$i" -eq 30 ]; then
              echo "ERROR: CockroachDB did not become ready after 60s"
              exit 1
            fi
            sleep 2
          done

      - name: Run database migrations
        run: |
          ./dist/meridian \
            --migrate \
            --database-url "postgres://root@localhost:26257/defaultdb?sslmode=disable"

      - name: Start meridian backend
        run: |
          DATABASE_URL="postgres://root@localhost:26257/defaultdb?sslmode=disable" \
          LOCAL_DEV_MODE=true \
          SAGA_ASSET_DIR="$(pwd)" \
            ./dist/meridian >/tmp/meridian.log 2>&1 &

      - name: Seed dev tenant and apply manifest
        run: |
          ./dist/seed-dev \
            --gateway-url=http://localhost:8090 \
            --grpc-addr=localhost:50051 \
            --manifest=examples/manifests/energy.json \
            --tenant-id=dev_tenant \
            --tenant-slug=dev-tenant

      - name: Create additional test tenants
        run: |
          GATEWAY_URL="http://localhost:8090"

          create_tenant() {
            local TENANT_ID=$1
            local PAYLOAD=$2
            HTTP_CODE=$(curl -sS -o /tmp/tenant_resp.txt -w "%{http_code}" \
              -X POST "${GATEWAY_URL}/v1/tenants" \
              -H "Content-Type: application/json" \
              -H "X-Tenant-Slug: dev-tenant" \
              -d "$PAYLOAD")
            echo "${TENANT_ID}: HTTP ${HTTP_CODE}"
            if [ "$HTTP_CODE" != "200" ] && [ "$HTTP_CODE" != "201" ] && [ "$HTTP_CODE" != "409" ]; then
              echo "ERROR: Unexpected response for ${TENANT_ID}:"
              cat /tmp/tenant_resp.txt
              exit 1
            fi
          }

          create_tenant "acme_corp" '{"tenantId":"acme_corp","displayName":"ACME Corporation","settlementAsset":"GBP","slug":"acme-corp"}'
          create_tenant "energy_co" '{"tenantId":"energy_co","displayName":"Energy Co Ltd","settlementAsset":"KWH","slug":"energy-co"}'

      - name: Set up Node.js
        uses: actions/setup-node@v6
        with:
          node-version: '22'
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install frontend dependencies
        working-directory: frontend
        run: npm ci

      - name: Install Playwright browsers
        working-directory: frontend
        run: npx playwright install --with-deps chromium

      - name: Run Playwright tests (shard ${{ matrix.shardIndex }}/4)
        working-directory: frontend
        env:
          CI: 'true'
        run: npx playwright test --shard=${{ matrix.shardIndex }}/4 --reporter=blob

      - name: Upload blob report
        uses: actions/upload-artifact@v7
        if: always()
        with:
          name: blob-report-${{ matrix.shardIndex }}
          path: frontend/blob-report/
          retention-days: 1

      - name: Upload Playwright traces
        uses: actions/upload-artifact@v7
        if: failure()
        with:
          name: playwright-traces-${{ matrix.shardIndex }}
          path: frontend/test-results/
          retention-days: 30

  # ===========================================================================
  # Merge: combine shard reports into a single HTML report
  # ===========================================================================
  merge-reports:
    name: Merge E2E Reports
    runs-on: ubuntu-latest
    needs: e2e
    if: ${{ always() && needs.e2e.result != 'skipped' }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v6

      - name: Set up Node.js
        uses: actions/setup-node@v6
        with:
          node-version: '22'
          cache: 'npm'
          cache-dependency-path: frontend/package-lock.json

      - name: Install frontend dependencies
        working-directory: frontend
        run: npm ci

      - name: Download blob reports
        uses: actions/download-artifact@v8
        with:
          pattern: blob-report-*
          path: frontend/all-blob-reports
          merge-multiple: true

      - name: Merge reports
        working-directory: frontend
        run: npx playwright merge-reports --reporter=html all-blob-reports

      - name: Upload merged report
        uses: actions/upload-artifact@v7
        if: always()
        with:
          name: playwright-report
          path: frontend/playwright-report/
          retention-days: 30