name: landing-page-production

# Promotes the current landing page to PRODUCTION: the `open-design-landing`
# Cloudflare Pages project, served at open-design.ai. This is the ONLY
# workflow that names the production project, and it is manual-only
# (workflow_dispatch) — a merge to `main` can never reach production on its
# own; it only updates the staging project (staging.open-design.ai) via
# `landing-page-staging`. Gate this further by configuring required reviewers
# on the GitHub `production` environment (Settings → Environments).
#
# The build is identical to staging/CI, so what you reviewed on
# staging.open-design.ai is what ships.

on:
  workflow_dispatch:
    inputs:
      reason:
        description: 'Why promote now? (recorded in the run log)'
        required: false

permissions:
  contents: read
  deployments: write

# Never cancel an in-flight production deploy.
concurrency:
  group: landing-page-production
  cancel-in-progress: false

jobs:
  deploy:
    name: Deploy landing page to production
    # Production ships `main` only. workflow_dispatch can be launched from any
    # ref via the Actions "Use workflow from" dropdown; gate the whole job on
    # the main ref so a dispatch from a feature branch/tag is skipped outright
    # (no deploy) instead of recording a non-main production run — which would
    # also dodge blog-indexing's `workflow_run` `branches: [main]` filter.
    if: github.repository == 'nexu-io/open-design' && github.ref == 'refs/heads/main'
    runs-on: ubuntu-latest
    timeout-minutes: 20
    environment:
      name: production
      url: https://open-design.ai

    steps:
      - name: Checkout
        uses: actions/checkout@v6.0.2
        with:
          # Production always ships `main`. workflow_dispatch can be launched
          # from any ref via the Actions "Use workflow from" dropdown, so pin
          # the checkout to main — the deployed artifact must equal reviewed
          # main, never whatever branch/tag the operator happened to select.
          ref: main

      - name: Setup pnpm
        uses: pnpm/action-setup@v5
        with:
          version: 10.33.2

      - name: Setup Node.js
        uses: actions/setup-node@v6
        with:
          node-version: 24
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Resolve Playwright version
        id: playwright-version
        run: |
          version=$(node -p "require('./apps/landing-page/package.json').devDependencies.playwright.replace(/[^0-9.]/g,'')")
          echo "version=$version" >> "$GITHUB_OUTPUT"

      - name: Cache generated previews
        id: previews-cache
        uses: actions/cache@v5.0.5
        with:
          path: apps/landing-page/public/previews
          key: landing-page-previews-${{ runner.os }}-${{ hashFiles('pnpm-lock.yaml', 'package.json', 'apps/landing-page/package.json', 'apps/landing-page/scripts/generate-previews.ts', 'apps/landing-page/scripts/fallback-preview-card.ts', 'skills/**', 'design-templates/**', 'templates/live-artifacts/**', 'plugins/_official/**') }}
          restore-keys: |
            landing-page-previews-${{ runner.os }}-

      - name: Cache Playwright browsers
        uses: actions/cache@v5.0.5
        with:
          path: ~/.cache/ms-playwright
          key: playwright-${{ runner.os }}-${{ steps.playwright-version.outputs.version }}

      - name: Install Playwright Chromium
        run: pnpm --filter @open-design/landing-page exec playwright install --with-deps chromium

      - name: Typecheck landing page
        run: pnpm --filter @open-design/landing-page typecheck

      # Generate previews before build so they end up in `out/previews/`.
      # Soft vs. hard failure is enforced inside the script itself:
      # individual broken `example.html` entries are logged and skipped,
      # but a systemic failure (chromium launch error, every job failing)
      # exits non-zero so we don't silently ship a deploy with zero
      # thumbnails to production.
      - name: Generate skill + template previews
        # Exact previews-cache hit ⇒ public/previews already holds the correct
        # thumbnails, skip the slow Playwright render. A restore-keys partial
        # hit keeps cache-hit false, so we still regenerate — no stale-thumbnail
        # drift.
        if: steps.previews-cache.outputs.cache-hit != 'true'
        run: pnpm --filter @open-design/landing-page previews

      - name: Build landing page
        env:
          PUBLIC_GA_MEASUREMENT_ID: ${{ vars.PUBLIC_GA_MEASUREMENT_ID }}
        run: pnpm --filter @open-design/landing-page build:static

      - name: Verify zero external JavaScript
        run: |
          node <<'NODE'
          const { readFileSync } = require('node:fs');
          const html = readFileSync('apps/landing-page/out/index.html', 'utf8');
          const forbidden = [
            /<script\b[^>]*\bsrc=/i,
            /type=["']module["']/i,
            /\/_astro\/[^"'<>\s]+\.js/i,
          ];
          for (const pattern of forbidden) {
            if (pattern.test(html)) {
              console.error(`Unexpected client JavaScript matched ${pattern}`);
              process.exit(1);
            }
          }
          NODE

      - name: Verify Cloudflare image resizing URLs
        run: |
          node <<'NODE'
          const { readFileSync } = require('node:fs');
          const html = readFileSync('apps/landing-page/out/index.html', 'utf8');
          const resizedUrls = html.match(/https:\/\/static\.open-design\.ai\/cdn-cgi\/image\//g) ?? [];
          if (resizedUrls.length < 16) {
            console.error(`Expected at least 16 Cloudflare resized image URLs, found ${resizedUrls.length}`);
            process.exit(1);
          }
          if (/(?:src|content)=["']\/assets\/[A-Za-z0-9_.-]+\.png/.test(html)) {
            console.error('Found local /assets/*.png image reference in generated landing HTML.');
            process.exit(1);
          }
          NODE

      # `--branch=main` IS the Cloudflare Pages production branch, so this
      # publishes to the production domain (open-design.ai).
      - name: Deploy to Cloudflare Pages (production)
        uses: cloudflare/wrangler-action@v3
        with:
          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          workingDirectory: apps/landing-page
          packageManager: npm
          command: >
            pages deploy out
            --project-name=open-design-landing
            --branch=main