deploy-website.yml

name: Deploy website

on:
  push:
    branches: [main]
    paths:
      - "js/website/**"
      - "js/core/**"
      - "js/react/**"
      - "crates/browser/**"
  pull_request:
    paths:
      - "js/website/**"
      - "js/core/**"
      - "js/react/**"
      - "crates/browser/**"

jobs:
  deploy:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    steps:
      - uses: actions/checkout@v7
      - uses: DeterminateSystems/nix-installer-action@main
      - uses: DeterminateSystems/magic-nix-cache-action@main
      - name: Deploy to Vercel
        id: deploy
        run: |
          set -o pipefail

          args=()
          if [ "${{ github.event_name }}" = "push" ] && [ "${{ github.ref }}" = "refs/heads/main" ]; then
            args+=(--prod)
          fi
          output=$(./bin/deploy-website "${args[@]}" 2>&1 | tee /dev/stderr) || exit $?
          url=$(echo "$output" | grep -o 'https://[^ ]*\.vercel\.app' | tail -1)
          if [ -z "$url" ]; then
            echo "::error::deploy-website succeeded but no Vercel URL was found in its output" >&2
            exit 1
          fi
          echo "url=$url" >> "$GITHUB_OUTPUT"
        env:
          VERCEL_TOKEN: ${{ secrets.VERCEL_TOKEN }}
          VERCEL_ORG_ID: ${{ secrets.VERCEL_ORG_ID }}
          VERCEL_PROJECT_ID: ${{ secrets.VERCEL_PROJECT_ID }}
      - name: Comment preview URL on PR
        if: github.event_name == 'pull_request' && steps.deploy.outputs.url
        uses: actions/github-script@v9
        with:
          script: |
            const body = `🔗 **Preview:** ${{ steps.deploy.outputs.url }}`;
            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.startsWith('🔗 **Preview:**'));
            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: context.issue.number,
                body,
              });
            }