preview-deployment.yml

name: Preview Deployment for PRs

on:
  pull_request:
    types: [opened, synchronize, reopened]
  pull_request_review:
    types: [submitted]

jobs:
  build-and-deploy-preview:
    runs-on: ubuntu-latest
    # Skip drafts and runs where Heroku is not configured
    if: ${{ github.event.pull_request.draft == false && secrets.HEROKU_API_KEY != '' }}

    steps:
      - name: Checkout code
        uses: actions/checkout@v7
        with:
          ref: ${{ github.head_ref }}
          repository: ${{ github.event.pull_request.head.repo.full_name }}

      - name: Set up Node.js
        uses: actions/setup-node@v7
        with:
          node-version: 20
          cache: npm
          cache-dependency-path: novaRewards/package-lock.json

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Generate preview URL
        id: preview-url
        run: |
          PR_NUMBER=${{ github.event.pull_request.number }}
          PREVIEW_URL="pr-${PR_NUMBER}-nova-rewards-staging.herokuapp.com"
          echo "url=${PREVIEW_URL}" >> $GITHUB_OUTPUT

      - name: Build backend
        working-directory: ./backend
        run: |
          NEXT_PUBLIC_API_URL=https://api-pr-${{ github.event.pull_request.number }}-nova-rewards.herokuapp.com \
          NEXT_PUBLIC_STELLAR_NETWORK=testnet \
          NEXT_PUBLIC_HORIZON_URL=https://horizon-testnet.stellar.org \
          NEXT_PUBLIC_ISSUER_PUBLIC=GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA \
          npm run build

      - name: Create Heroku app if not exists
        env:
          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
        run: |
          PREVIEW_APP="pr-${{ github.event.pull_request.number }}-nova-rewards"
          if ! heroku apps:info "${PREVIEW_APP}" --exit-code 2>/dev/null; then
            heroku apps:create "${PREVIEW_APP}" \
              --region us \
              --stack heroku-22 || true
          fi

      - name: Deploy to Heroku
        env:
          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
        run: |
          PREVIEW_APP="pr-${{ github.event.pull_request.number }}-nova-rewards"
          git remote add heroku https://git.heroku.com/${PREVIEW_APP}.git
          git push heroku HEAD:main --force || true

      - name: Configure preview environment
        env:
          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
        run: |
          PREVIEW_APP="pr-${{ github.event.pull_request.number }}-nova-rewards"
          heroku config:set \
            NODE_ENV=staging \
            DATABASE_URL=${{ secrets.STAGING_DATABASE_URL }} \
            REDIS_URL=${{ secrets.STAGING_REDIS_URL }} \
            --app "${PREVIEW_APP}" || true

      - name: Run database migrations on preview
        env:
          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
        run: |
          PREVIEW_APP="pr-${{ github.event.pull_request.number }}-nova-rewards"
          heroku run "npm run db:migrate" --app "${PREVIEW_APP}" --exit-code || true

      - name: Seed preview database
        env:
          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
        run: |
          PREVIEW_APP="pr-${{ github.event.pull_request.number }}-nova-rewards"
          heroku run "npm run db:seed:preview" --app "${PREVIEW_APP}" --exit-code || true

      - name: Post deployment comment
        continue-on-error: true
        if: always()
        uses: actions/github-script@v9
        with:
          script: |
            const pr = context.payload.pull_request;
            const prNumber = pr.number;
            const apiUrl = `https://api-pr-${prNumber}-nova-rewards.herokuapp.com`;
            
            const commentBody = `## 🚀 Preview Deployment Ready
            
            ✅ Your preview environment is ready for testing!
            
            - **API**: [${apiUrl}](${apiUrl})
            - **PR Number**: ${prNumber}
            
            ### Test Credentials
            - Email: \`testuser1@test.com\`
            - Password: \`TestPassword123!\`
            
            ### Notes
            - The preview environment uses the staging database with seed data
            - Changes are deployed automatically on new commits
            - Preview environment expires 7 days after PR closes
            
            Happy testing! 🎉`;
            
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: commentBody,
            });

  cleanup-preview:
    runs-on: ubuntu-latest
    if: ${{ github.event.action == 'closed' && secrets.HEROKU_API_KEY != '' }}

    steps:
      - name: Destroy preview app
        env:
          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
        run: |
          PREVIEW_APP="pr-${{ github.event.pull_request.number }}-nova-rewards"
          heroku apps:destroy "${PREVIEW_APP}" --confirm "${PREVIEW_APP}" || true

      - name: Post cleanup comment
        continue-on-error: true
        uses: actions/github-script@v9
        with:
          script: |
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: '🧹 Preview deployment has been cleaned up.',
            });