frontend-pull-request.yml

name: Frontend Pull Requests

on:
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
    paths:
      - frontend/**
      - .github/workflows/frontend-pull-request.yml

permissions:
  contents: read
  deployments: read

jobs:
  unit-tests:
    name: Unit Tests
    runs-on: ubuntu-latest

    defaults:
      run:
        working-directory: frontend

    steps:
      - uses: actions/checkout@v5

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version-file: frontend/.nvmrc
          cache: npm
          cache-dependency-path: frontend/package-lock.json

      - name: Install dependencies
        run: npm ci

      - name: Run unit tests
        run: npm run test:unit -- --passWithNoTests

  smoke-test:
    name: Vercel Preview Smoke Test
    runs-on: ubuntu-latest
    steps:
      - name: Wait for Vercel deployments and smoke test
        env:
          GH_TOKEN: ${{ github.token }}
          SHA: ${{ github.event.pull_request.head.sha }}
          REPO: ${{ github.repository }}
        run: |
          ENVIRONMENTS=(
            "Preview – flagsmith-frontend-preview"
            "Preview – flagsmith-frontend-staging"
          )

          for ENV_NAME in "${ENVIRONMENTS[@]}"; do
            echo "⏳ Waiting for '$ENV_NAME' deployment..."
            URL=""
            for i in $(seq 1 60); do
              # Find the deployment for this commit and environment
              DEPLOY_ID=$(gh api "repos/$REPO/deployments?sha=$SHA&environment=$(printf '%s' "$ENV_NAME" | jq -sRr @uri)&per_page=1" --jq '.[0].id // empty')

              if [ -n "$DEPLOY_ID" ]; then
                STATE=$(gh api "repos/$REPO/deployments/$DEPLOY_ID/statuses?per_page=1" --jq '.[0].state // empty')
                if [ "$STATE" = "success" ]; then
                  URL=$(gh api "repos/$REPO/deployments/$DEPLOY_ID/statuses?per_page=1" --jq '.[0].environment_url')
                  echo "✅ '$ENV_NAME' deployed at: $URL"
                  break
                elif [ "$STATE" = "failure" ] || [ "$STATE" = "error" ]; then
                  echo "❌ '$ENV_NAME' deployment failed with state: $STATE"
                  exit 1
                fi
              fi
              sleep 10
            done

            if [ -z "$URL" ]; then
              echo "⚠️ Timed out waiting for '$ENV_NAME' — skipping"
              continue
            fi

            # Smoke test the deployment
            echo "🔍 Testing $URL/health ..."
            STATUS=$(curl -s -o /dev/null -w '%{http_code}' "$URL/health")
            if [ "$STATUS" != "200" ]; then
              echo "❌ /health returned $STATUS"
              exit 1
            fi

            echo "🔍 Testing $URL/config/project-overrides ..."
            STATUS=$(curl -s -o /dev/null -w '%{http_code}' "$URL/config/project-overrides")
            if [ "$STATUS" != "200" ]; then
              echo "❌ /config/project-overrides returned $STATUS"
              exit 1
            fi

            echo "🔍 Testing $URL/ ..."
            STATUS=$(curl -s -o /dev/null -w '%{http_code}' "$URL/")
            if [ "$STATUS" != "200" ]; then
              echo "❌ / returned $STATUS (this is the index page served by the Express server)"
              exit 1
            fi

            echo "✅ All smoke tests passed for '$ENV_NAME'"
            echo ""
          done

          echo "🎉 All Vercel preview deployments are healthy"