chore(examples): Add 'Sitefinity CMS' Example (#39537)

This is an example of how to integrate [Sitefinity CMS
](https://www.progress.com/sitefinity-cms)with next.js

Co-authored-by: Balázs Orbán <info@balazsorban.com>

examples/cms-sitefinity/.env.local.example

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+SF_API_URL=
+SF_URL=

examples/cms-sitefinity/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# local env files
+.env*.local
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts

examples/cms-sitefinity/README.md

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+# A statically generated blog example using Next.js and Sitefinity CMS
+
+This is the existing [cms-sitefinity](https://github.com/vercel/next.js/tree/canary/examples/cms-sitefinity) plus TypeScript.
+This example showcases [Next.js's Static Generation feature](https://nextjs.org/docs/basic-features/pages) using Sitefinity CMS as the data source.
+
+## Demo
+
+[https://next-cms-sitefinity.vercel.app/](https://next-cms-sitefinity.vercel.app/)
+
+## Deploy your own
+
+Deploy the example using [Vercel](https://vercel.com?utm_source=github&utm_medium=readme&utm_campaign=next-example) or preview live with [StackBlitz](https://stackblitz.com/github/vercel/next.js/tree/canary/examples/cms-sitefinity)
+
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/git/external?repository-url=https://github.com/vercel/next.js/tree/canary/examples/cms-sitefinity&project-name=cms-sitefinity&repository-name=cms-sitefinity)
+
+### Related examples
+
+- [WordPress](/examples/cms-wordpress)
+- [DatoCMS](/examples/cms-datocms)
+- [Sanity](/examples/cms-sanity)
+- [TakeShape](/examples/cms-takeshape)
+- [Prismic](/examples/cms-prismic)
+- [Contentful](/examples/cms-contentful)
+- [Strapi](/examples/cms-strapi)
+- [Agility CMS](/examples/cms-agilitycms)
+- [Cosmic](/examples/cms-cosmic)
+- [ButterCMS](/examples/cms-buttercms)
+- [Storyblok](/examples/cms-storyblok)
+- [GraphCMS](/examples/cms-graphcms)
+- [Kontent](/examples/cms-kontent)
+- [Umbraco Heartcore](/examples/cms-umbraco-heartcore)
+- [Builder.io](/examples/cms-builder-io)
+- [TinaCMS](/examples/cms-tina/)
+
+## How to use
+
+Execute [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app) with [npm](https://docs.npmjs.com/cli/init), [Yarn](https://yarnpkg.com/lang/en/docs/cli/create/), or [pnpm](https://pnpm.io) to bootstrap the example:
+
+```bash
+npx create-next-app --example cms-sitefinity cms-sitefinity-app
+```
+
+```bash
+yarn create next-app --example cms-sitefinity cms-sitefinity-app
+```
+
+```bash
+pnpm create next-app --example cms-sitefinity cms-sitefinity-app
+```
+
+## Configuration
+
+### Step 1. Setup the CMS locally (version >=14.27922)
+
+First, [install](https://www.progress.com/documentation/sitefinity-cms/install-sitefinity) and run the CMS Locally.
+
+### Step 2. Import the ready to use dynamic module 'Posts'
+
+For the purpose of this demo a ready to use dynamic module was build containing two types - 'Post' and 'Author'.
+
+In order to install it:
+
+1. Open the CMS Administration under (/Sitefinity)
+2. Open the Export/Import screen under (/Sitefinity/Administration/Packaging)
+3. Click on Import Zip file and import the file from the [sitefinity folder](./sitefinity/SitefinityExport.zip)
+
+### Step 3. Enable the web service
+
+By default the web services are not allowed for anonymous users, so the yhave to be enabled.
+
+Go to /sitefinity/Administration/WebServices and edit the 'Default' web service to allow it to be accessible by 'Everyone'
+
+### Step 4. Install the GraphQL package
+
+1. Add the [Sitefinity CMS nugget source](https://www.progress.com/documentation/sitefinity-cms/sitefinity-cms-nuget-packages-repository)
+2. Install the [Progress.Sitefinity.GraphQL](https://nuget.sitefinity.com/#/package/Progress.Sitefinity.GraphQL) package (enable prerelease filter).
+
+### Step 5. Set up environment variables
+
+Copy the `.env.local.example` file in this directory to `.env.local` (which will be ignored by Git):
+
+```bash
+cp .env.local.example .env.local
+```
+
+Then set each variable on `.env.local`
+
+- `SF_API_URL` - This is the url of the 'Default' web service that we configured earlier. E.g. http://locahost/api/default/
+- `SF_URL` - This is the URL of the CMS itself. E.g. http://localhost/
+
+### Step 6. Run Next.js in development mode
+
+```bash
+npm install
+npm run dev
+
+# or
+
+yarn
+yarn dev
+```
+
+Your blog should be up and running on [http://localhost:3000](http://localhost:3000)! If it doesn't work, post on [GitHub discussions](https://github.com/vercel/next.js/discussions).

examples/cms-sitefinity/components/alert.tsx

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+import Container from './container'
+import cn from 'classnames'
+import { EXAMPLE_PATH } from '../lib/constants'
+
+type Props = {
+  preview?: boolean
+}
+
+const Alert = ({ preview }: Props) => {
+  return (
+    <div
+      className={cn('border-b', {
+        'bg-neutral-800 border-neutral-800 text-white': preview,
+        'bg-neutral-50 border-neutral-200': !preview,
+      })}
+    >
+      <Container>
+        <div className="py-2 text-center text-sm">
+          {preview ? (
+            <>
+              This page is a preview.{' '}
+              <a
+                href="/api/exit-preview"
+                className="underline hover:text-teal-300 duration-200 transition-colors"
+              >
+                Click here
+              </a>{' '}
+              to exit preview mode.
+            </>
+          ) : (
+            <>
+              The source code for this blog is{' '}
+              <a
+                href={`https://github.com/vercel/next.js/tree/canary/examples/${EXAMPLE_PATH}`}
+                className="underline hover:text-blue-600 duration-200 transition-colors"
+              >
+                available on GitHub
+              </a>
+              .
+            </>
+          )}
+        </div>
+      </Container>
+    </div>
+  )
+}
+
+export default Alert

examples/cms-sitefinity/components/avatar.tsx

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+type Props = {
+  name: string
+  picture: string
+}
+
+const Avatar = ({ name, picture }: Props) => {
+  return (
+    <div className="flex items-center">
+      <img src={picture} className="w-12 h-12 rounded-full mr-4" alt={name} />
+      <div className="text-xl font-bold">{name}</div>
+    </div>
+  )
+}
+
+export default Avatar

examples/cms-sitefinity/components/container.tsx

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+type Props = {
+  children?: React.ReactNode
+}
+
+const Container = ({ children }: Props) => {
+  return <div className="container mx-auto px-5">{children}</div>
+}
+
+export default Container

examples/cms-sitefinity/components/cover-image.tsx

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+import cn from 'classnames'
+import Link from 'next/link'
+
+type Props = {
+  title: string
+  src: string
+  slug?: string
+}
+
+const CoverImage = ({ title, src, slug }: Props) => {
+  const image = (
+    <img
+      src={src}
+      alt={`Cover Image for ${title}`}
+      className={cn('shadow-sm', {
+        'hover:shadow-lg transition-shadow duration-200': slug,
+      })}
+    />
+  )
+  return (
+    <div className="sm:mx-0">
+      {slug ? (
+        <Link as={`/posts${slug}`} href="/posts[slug]">
+          <a aria-label={title}>{image}</a>
+        </Link>
+      ) : (
+        image
+      )}
+    </div>
+  )
+}
+
+export default CoverImage

examples/cms-sitefinity/components/date-formatter.tsx

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+import { parseISO, format } from 'date-fns'
+
+type Props = {
+  dateString: string
+}
+
+const DateFormatter = ({ dateString }: Props) => {
+  const date = parseISO(dateString)
+  return <time dateTime={dateString}>{format(date, 'LLLL	d, yyyy')}</time>
+}
+
+export default DateFormatter

examples/cms-sitefinity/components/footer.tsx

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+import Container from './container'
+import { EXAMPLE_PATH } from '../lib/constants'
+
+const Footer = () => {
+  return (
+    <footer className="bg-neutral-50 border-t border-neutral-200">
+      <Container>
+        <div className="py-28 flex flex-col lg:flex-row items-center">
+          <h3 className="text-4xl lg:text-[2.5rem] font-bold tracking-tighter leading-tight text-center lg:text-left mb-10 lg:mb-0 lg:pr-4 lg:w-1/2">
+            Statically Generated with Next.js.
+          </h3>
+          <div className="flex flex-col lg:flex-row justify-center items-center lg:pl-4 lg:w-1/2">
+            <a
+              href="https://nextjs.org/docs/basic-features/pages"
+              className="mx-3 bg-black hover:bg-white hover:text-black border border-black text-white font-bold py-3 px-12 lg:px-8 duration-200 transition-colors mb-6 lg:mb-0"
+            >
+              Read Documentation
+            </a>
+            <a
+              href={`https://github.com/vercel/next.js/tree/canary/examples/${EXAMPLE_PATH}`}
+              className="mx-3 font-bold hover:underline"
+            >
+              View on GitHub
+            </a>
+          </div>
+        </div>
+      </Container>
+    </footer>
+  )
+}
+
+export default Footer

examples/cms-sitefinity/components/header.tsx

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+import Link from 'next/link'
+
+const Header = () => {
+  return (
+    <h2 className="text-2xl md:text-4xl font-bold tracking-tight md:tracking-tighter leading-tight mb-20 mt-8">
+      <Link href="/">
+        <a className="hover:underline">Blog</a>
+      </Link>
+      .
+    </h2>
+  )
+}
+
+export default Header

examples/cms-sitefinity/components/hero-post.tsx

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+import Avatar from './avatar'
+import DateFormatter from './date-formatter'
+import CoverImage from './cover-image'
+import Link from 'next/link'
+import type Author from '../interfaces/author'
+
+type Props = {
+  title: string
+  coverImage: string
+  date: string
+  excerpt: string
+  author: Author
+  slug: string
+}
+
+const HeroPost = ({
+  title,
+  coverImage,
+  date,
+  excerpt,
+  author,
+  slug,
+}: Props) => {
+  return (
+    <section>
+      <div className="mb-8 md:mb-16">
+        <CoverImage title={title} src={coverImage} slug={slug} />
+      </div>
+      <div className="md:grid md:grid-cols-2 md:gap-x-16 lg:gap-x-8 mb-20 md:mb-28">
+        <div>
+          <h3 className="mb-4 text-4xl lg:text-5xl leading-tight">
+            <Link as={`/posts${slug}`} href="/posts[slug]">
+              <a className="hover:underline">{title}</a>
+            </Link>
+          </h3>
+          <div className="mb-4 md:mb-0 text-lg">
+            <DateFormatter dateString={date} />
+          </div>
+        </div>
+        <div>
+          <p className="text-lg leading-relaxed mb-4">{excerpt}</p>
+          <Avatar name={author.name} picture={author.picture} />
+        </div>
+      </div>
+    </section>
+  )
+}
+
+export default HeroPost

examples/cms-sitefinity/components/intro.tsx

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+import { CMS_NAME } from '../lib/constants'
+
+const Intro = () => {
+  return (
+    <section className="flex-col md:flex-row flex items-center md:justify-between mt-16 mb-16 md:mb-12">
+      <h1 className="text-5xl md:text-8xl font-bold tracking-tighter leading-tight md:pr-8">
+        Blog.
+      </h1>
+      <h4 className="text-center md:text-left text-lg mt-5 md:pl-8">
+        A statically generated blog example using{' '}
+        <a
+          href="https://nextjs.org/"
+          className="underline hover:text-blue-600 duration-200 transition-colors"
+        >
+          Next.js
+        </a>{' '}
+        and {CMS_NAME}.
+      </h4>
+    </section>
+  )
+}
+
+export default Intro