preview.yml

name: PR Preview

on:
  pull_request:
    branches: [master]

jobs:
  preview:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "22"
          cache: "npm"
          cache-dependency-path: bobsgameweb/package-lock.json

      - name: Install dependencies
        working-directory: bobsgameweb
        run: npm ci --legacy-peer-deps

      - name: Build
        working-directory: bobsgameweb
        run: npx vite build

      - name: Upload PR preview artifact
        uses: actions/upload-artifact@v4
        with:
          name: pr-preview-${{ github.event.pull_request.number }}
          path: bobsgameweb/dist/
          retention-days: 3

      - name: Comment PR with build status
        uses: actions/github-script@v7
        with:
          script: |
            const buildUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}`;
            const body = `## ✅ PR Build Successful\n\n` +
              `Build artifacts are available for download from this workflow run.\n\n` +
              `- **Build URL:** [View build logs](${buildUrl})\n` +
              `- **Artifact:** \`pr-preview-${context.issue.number}\`\n` +
              `- **Retention:** 3 days\n\n` +
              `> Merge to \`master\` to deploy to production.`;
            
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: context.issue.number,
            });
            
            const existing = comments.find(c => c.body?.includes('PR Build Successful'));
            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body: body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body: body,
              });
            }