Merge pull request #2 from kodamera/feature/draft-mode

Implemented preview functionality with next js 13 app dir

app/[locale]/[[...slug]]/category-page-preview.tsx

@@ -0,0 +1,26 @@
+'use client'
+
+import PreviewBanner from 'components/ui/preview-banner'
+import { usePreview } from 'lib/sanity/sanity.preview'
+import CategoryPage from './category-page'
+
+export default function CategoryPagePreview({
+  query,
+  queryParams,
+}: {
+  query: string
+  queryParams: {
+    [key: string]: any
+  }
+}) {
+  const data = usePreview(null, query, queryParams)
+
+  const { title, _type } = data
+
+  return (
+    <>
+      <CategoryPage data={data} />
+      <PreviewBanner title={`${title} (${_type})`} />
+    </>
+  )
+}

app/[locale]/[[...slug]]/home-page-preview.tsx

@@ -0,0 +1,26 @@
+'use client'
+
+import PreviewBanner from 'components/ui/preview-banner'
+import { usePreview } from 'lib/sanity/sanity.preview'
+import HomePage from './home-page'
+
+export default function HomePagePreview({
+  query,
+  queryParams,
+}: {
+  query: string
+  queryParams: {
+    [key: string]: any
+  }
+}) {
+  const data = usePreview(null, query, queryParams)
+
+  const { title, _type } = data
+
+  return (
+    <>
+      <HomePage data={data} />
+      <PreviewBanner title={`${title} (${_type})`} />
+    </>
+  )
+}

app/[locale]/[[...slug]]/page.tsx

@@ -1,19 +1,73 @@
+import PreviewSuspense from 'components/preview-suspense';
 import getQueryFromSlug from 'helpers/getQueryFromSlug';
 import { docQuery } from 'lib/sanity/queries';
 import { client } from 'lib/sanity/sanity.client';
 import type { Metadata } from 'next';
+import { draftMode } from 'next/headers';
 import CategoryPage from './category-page';
+import CategoryPagePreview from './category-page-preview';
 import HomePage from './home-page';
+import HomePagePreview from './home-page-preview';
 import ProductPage from './product-page';
+import ProductPagePreview from './product-page-preview';
 import SinglePage from './single-page';
+import SinglePagePreview from './single-page-preview';
+
+/**
+ * Render pages depending on type.
+ */
+export default async function Page({
+  params,
+}: {
+  params: { slug: string[], locale: string };
+}) {
+  const { isEnabled } = draftMode();
+
+  const { slug, locale } = params;
+  
+  const { query = '', queryParams, docType } = getQueryFromSlug(slug, locale)
+
+  const pageData = await client.fetch(query, queryParams)
+
+  const data = filterDataToSingleItem(pageData, isEnabled)
+
+  if (isEnabled) {
+    return (
+      <PreviewSuspense fallback="Loading...">
+        {docType === 'home' && (
+          <HomePagePreview query={query} queryParams={queryParams} />
+        )}
+        {docType === 'page' && (
+          <SinglePagePreview query={query} queryParams={queryParams} />
+        )}
+        {docType === 'product' && (
+          <ProductPagePreview query={query} queryParams={queryParams} />
+        )}
+        {docType === 'category' && (
+          <CategoryPagePreview query={query} queryParams={queryParams} />
+        )}
+      </PreviewSuspense>
+    )
+  }
+  
+  return (
+    <>
+      {docType === 'home' && <HomePage data={data} />}
+      {docType === 'product' && <ProductPage data={data} />}
+      {docType === 'category' && <CategoryPage data={data} />}
+      {docType === 'page' && <SinglePage data={data} />}
+    </>
+  )
+}
+
+// Background revalidate once every day.
+export const revalidate = 86400;
 
 /**
  * Get paths for each page.
  */
 export async function generateStaticParams() {
-  const paths = await client.fetch(docQuery, {
-    next: { revalidate: 10 },
-  })
+  const paths = await client.fetch(docQuery)
 
   return paths.map((path: { 
     slug: string,
@@ -80,29 +134,3 @@ export async function generateMetadata({ params }: {params: { slug: string[], lo
     },
   }
 }
-
-/**
- * Render pages depending on type.
- */
-export default async function Page({
-  params,
-}: {
-  params: { slug: string[], locale: string };
-}) {
-  const { slug, locale } = params;
-  
-  const { query = '', queryParams, docType } = getQueryFromSlug(slug, locale)
-
-  const pageData = await client.fetch(query, queryParams)
-
-  const data = filterDataToSingleItem(pageData, false)
-  
-  return (
-    <>
-      {docType === 'home' && <HomePage data={data} />}
-      {docType === 'product' && <ProductPage data={data} />}
-      {docType === 'category' && <CategoryPage data={data} />}
-      {docType === 'page' && <SinglePage data={data} />}
-    </>
-  )
-}

app/[locale]/[[...slug]]/product-page-preview.tsx

@@ -0,0 +1,26 @@
+'use client'
+
+import PreviewBanner from 'components/ui/preview-banner'
+import { usePreview } from 'lib/sanity/sanity.preview'
+import ProductPage from './product-page'
+
+export default function ProductPagePreview({
+  query,
+  queryParams,
+}: {
+  query: string
+  queryParams: {
+    [key: string]: any
+  }
+}) {
+  const data = usePreview(null, query, queryParams)
+
+  const { title, _type } = data
+
+  return (
+    <>
+      <ProductPage data={data} />
+      <PreviewBanner title={`${title} (${_type})`} />
+    </>
+  )
+}

app/[locale]/[[...slug]]/single-page-preview.tsx

@@ -0,0 +1,26 @@
+'use client'
+
+import PreviewBanner from 'components/ui/preview-banner'
+import { usePreview } from 'lib/sanity/sanity.preview'
+import SinglePage from './single-page'
+
+export default function SinglePagePreview({
+  query,
+  queryParams,
+}: {
+  query: string
+  queryParams: {
+    [key: string]: any
+  }
+}) {
+  const data = usePreview(null, query, queryParams)
+
+  const { title, _type } = data
+
+  return (
+    <>
+      <SinglePage data={data} />
+      <PreviewBanner title={`${title} (${_type})`} />
+    </>
+  )
+}

app/api/draft/route.ts

@@ -0,0 +1,99 @@
+// route handler enabling draft mode
+import { categoryQuery, homePageQuery, pageQuery, productQuery } from 'lib/sanity/queries';
+import { client } from 'lib/sanity/sanity.client';
+import { draftMode } from 'next/headers';
+
+const draftSecret = process.env.NEXT_PUBLIC_SANITY_DRAFT_TOKEN
+
+export async function GET(request: Request) {
+// Enable Draft Mode by setting the cookie
+draftMode().enable();
+  // Parse query string parameters
+  const { searchParams } = new URL(request.url);
+  const secret = searchParams.get('secret');
+  const slug = searchParams.get('slug');
+  const locale = searchParams.get('locale');
+  const type = searchParams.get('type');
+
+  // Make sure there's a valid draft token.
+  if (secret !== draftSecret) {
+    return new Response('Invalid token', { status: 401 });
+  }
+
+  // Make sure there's a slug provided.
+  if (!slug) {
+    return new Response('No slug provided', { status: 401 });
+  }
+
+  // Make sure there's a locale provided.
+  if (!locale) {
+    return new Response('No locale provided', { status: 401 });
+  }
+
+   // Make sure there's a type provided.
+   if (!type) {
+    return new Response('No type provided', { status: 401 });
+  }
+
+  // Types available for preview - Check if the post with the given `slug` exists
+  const home = await client.fetch(homePageQuery, {
+    slug: slug,
+    locale: locale,
+  })
+
+  const page = await client.fetch(pageQuery, {
+    slug: slug,
+    locale: locale,
+  })
+
+  const product = await client.fetch(productQuery, {
+    slug: slug,
+    locale: locale,
+  })
+
+  const category = await client.fetch(categoryQuery, {
+    slug: slug,
+    locale: locale,
+  })
+
+
+  draftMode().enable();
+
+   // Redirect to the path from the fetched post
+  // We don't redirect to req.query.slug as that might lead to open redirect vulnerabilities
+  if (home && type === 'home') {
+    return new Response(null, {
+        status: 307,
+        headers: {
+            Location: `/${home.locale}/${home.slug}`,
+        },
+    })
+  }
+
+  if (page && type === 'page') {
+    return new Response(null, {
+        status: 307,
+        headers: {
+            Location: `/${page.locale}/${page.slug}`,
+        },
+    })
+  }
+
+  if (product && type === 'product') {
+    return new Response(null, {
+        status: 307,
+        headers: {
+            Location: `/${product.locale}/${product.slug}`,
+        },
+    })
+  }
+
+  if (category && type === 'category') {
+    return new Response(null, {
+        status: 307,
+        headers: {
+            Location: `/${category.locale}/${category.slug}`,
+        },
+    })
+  }
+}

app/api/exit-draft/route.ts

@@ -0,0 +1,12 @@
+import { draftMode } from 'next/headers';
+ 
+export async function GET() {
+  draftMode().disable();
+
+  return new Response(null, {
+      status: 307,
+      headers: {
+          Location: `/`,
+      },
+  })
+}

components/preview-suspense.tsx

@@ -0,0 +1,4 @@
+'use client'
+
+// Once rollup supports 'use client' module directives then 'next-sanity' will include them and this re-export will no longer be necessary
+export { PreviewSuspense as default } from 'next-sanity/preview'

components/ui/preview-banner/index.tsx

@@ -0,0 +1 @@
+export { default } from './preview-banner';

components/ui/preview-banner/preview-banner.tsx

@@ -0,0 +1,29 @@
+'use client'
+
+import { useTranslations } from 'next-intl'
+import Link from 'next/link'
+
+interface PreviewBannerProps {
+  title?: string
+}
+
+const PreviewBanner = ({ title }: PreviewBannerProps) => {
+  const t = useTranslations('ui.previewBanner')
+  return (
+    <div className="flex justify-between items-center bg-app border-t border-high-contrast w-full fixed bottom-0 right-0 p-6 z-50">
+      {title && (
+        <p className="text-lg">
+          {t('titlePart')} <span className="italic font-bold">{title}</span>
+        </p>
+      )}
+      <Link
+        className="bg-blue transition-colors duration-100 text-center px-6 py-4 text-white font-bold hover:bg-opacity-80 focus:bg-opacity-80"
+        href="/api/exit-draft"
+      >
+        {t('exitPreviewLabel')}
+      </Link>
+    </div>
+  )
+}
+
+export default PreviewBanner