fix: redirect to course page (#1507)

* chore: sync PostSchema with builder

* fix: redirect to course page when postType is course

* refactor: move redirect to client as getStaticProps doesn't support redirects

src/pages/[post].tsx

@@ -37,19 +37,45 @@ import {
 } from '@/hooks/mux/use-video-player-overlay'
 import VideoPlayerOverlay from '@/components/posts/video-player-overlay'
 import {MuxPlayerProvider, useMuxPlayer} from '@/hooks/use-mux-player'
+import router from 'next/router'
+
+export const PostTypeSchema = z.union([
+  z.literal('article'),
+  z.literal('lesson'),
+  z.literal('podcast'),
+  z.literal('tip'),
+  z.literal('course'),
+])
+
+export const PostStateSchema = z.union([
+  z.literal('draft'),
+  z.literal('published'),
+  z.literal('archived'),
+  z.literal('deleted'),
+])
+
+export const PostVisibilitySchema = z.union([
+  z.literal('public'),
+  z.literal('private'),
+  z.literal('unlisted'),
+])
+
+export const PostAccessSchema = z.union([z.literal('free'), z.literal('pro')])
 
 export const FieldsSchema = z.object({
-  body: z.string().optional(),
-  slug: z.string().optional(),
-  state: z.string().optional(),
-  title: z.string().optional(),
-  access: z.string().optional(),
-  github: z.string().optional(),
-  gitpod: z.string().optional(),
-  postType: z.string().optional(),
-  visibility: z.string().optional(),
-  description: z.string().optional(),
-  eggheadLessonId: z.number().optional(),
+  title: z.string(),
+  postType: PostTypeSchema.default('lesson'),
+  summary: z.string().optional().nullable(),
+  body: z.string().nullable().optional(),
+  state: PostStateSchema.default('draft'),
+  visibility: PostVisibilitySchema.default('public'),
+  access: PostAccessSchema.default('pro'),
+  eggheadLessonId: z.number().nullish(),
+  eggheadPlaylistId: z.number().nullish(),
+  slug: z.string(),
+  description: z.string().nullish(),
+  github: z.string().nullish(),
+  gitpod: z.string().nullish(),
   primaryTagId: z.string().nullish(),
 })
 export type Fields = z.infer<typeof FieldsSchema>
@@ -286,6 +312,7 @@ export const getStaticProps: GetServerSideProps = async function ({params}) {
   }
 
   const {post, videoResource, tags} = result
+
   const lesson = await fetch(
     `${process.env.NEXT_PUBLIC_AUTH_DOMAIN}/api/v1/lessons/${post.fields.eggheadLessonId}`,
   ).then((res) => res.json())
@@ -366,11 +393,21 @@ export default function PostPage({
   const imageParams = new URLSearchParams()
   imageParams.set('title', post.fields?.title ?? '')
 
+  React.useEffect(() => {
+    if (post.fields.postType === 'course') {
+      router.replace(`/courses/${post.fields.slug}`)
+    }
+  }, [post.fields.postType, post.fields.slug, router])
+
+  if (post.fields.postType === 'course') {
+    return null
+  }
+
   return (
     <div>
       <NextSeo
         title={post.fields.title}
-        description={post.fields.description}
+        description={post.fields.description ?? ''}
         canonical={`${process.env.NEXT_PUBLIC_DEPLOYMENT_URL}/${post.fields.slug}`}
         twitter={{
           cardType: 'summary_large_image',