treeverse · shcheklein · Feb 15, 2020 · Feb 14, 2020 · Feb 14, 2020 · Feb 15, 2020
diff --git a/pages/community.js b/pages/community.js
@@ -1,17 +1,11 @@
 import React from 'react'
 import Head from 'next/head'
 
-import {
-  getLatestIssues,
-  getLatestTopics,
-  getLatestPosts
-} from '../src/utils/api'
-
 import Community from '../src/components/Community'
 
 import { META_BASE_TITLE } from '../src/consts'
 
-export default function CommunityPage(props) {
+export default function CommunityPage() {
   return (
     <>
       <Head>
@@ -28,19 +22,7 @@ export default function CommunityPage(props) {
         />
         <title>Community | {META_BASE_TITLE}</title>
       </Head>
-      <Community {...props} />
+      <Community />
     </>
   )
 }
-
-CommunityPage.getInitialProps = async ({ req }) => {
-  const issues = await getLatestIssues(req)
-  const posts = await getLatestPosts(req)
-  const topics = await getLatestTopics(req)
-
-  return {
-    issues,
-    posts,
-    topics
-  }
-}
diff --git a/src/components/Community/Learn/index.js b/src/components/Community/Learn/index.js
@@ -1,4 +1,4 @@
-import React, { useCallback, useEffect, useState } from 'react'
+import React, { useCallback } from 'react'
 import PropTypes from 'prop-types'
 import format from 'date-fns/format'
 
@@ -10,6 +10,7 @@ import CommunityBlock from '../Block'
 import CommunityButton from '../Button'
 import CommunitySection from '../Section'
 
+import { usePosts, useCommentsCount } from '../../../utils/api'
 import { pluralizeComments } from '../../../utils/i18n'
 
 import {
@@ -45,19 +46,10 @@ function CommunityBlogPost({
   commentsUrl,
   pictureUrl
 }) {
-  const [count, setCount] = useState()
-  const loaded = count !== undefined
   const logPost = useCallback(() => logEvent('community', 'blog', title), [
     title
   ])
-
-  useEffect(() => {
-    if (commentsUrl) {
-      fetch(`/api/comments?url=${commentsUrl}`)
-        .then(result => result.json())
-        .then(data => setCount(data.count))
-    }
-  }, [])
+  const { error, ready, result } = useCommentsCount(commentsUrl)
 
   return (
     <ImageLine key={url}>
@@ -82,14 +74,14 @@ function CommunityBlogPost({
           {title}
         </Link>
         <Meta>
-          {loaded && (
+          {ready && !error && (
             <>
               <Comments
                 href={commentsUrl}
                 target="_blank"
                 rel="noreferrer noopener"
               >
-                {pluralizeComments(count)}
+                {pluralizeComments(result)}
               </Comments>
               {' • '}
             </>
@@ -185,7 +177,9 @@ CommunityDocumentation.propTypes = {
   url: PropTypes.string
 }
 
-export default function CommunityLearn({ posts, theme }) {
+export default function CommunityLearn({ theme }) {
+  const { error, ready, result: posts } = usePosts()
+
   return (
     <Wrapper>
       <CommunitySection
@@ -242,7 +236,7 @@ export default function CommunityLearn({ posts, theme }) {
                 </HeaderLink>
               }
               action={
-                posts.length && (
+                posts && (
                   <CommunityButton
                     theme={theme}
                     href="https://blog.dvc.org"
@@ -255,17 +249,16 @@ export default function CommunityLearn({ posts, theme }) {
                 )
               }
             >
-              {posts.length ? (
+              {!ready && <Placeholder>Loading...</Placeholder>}
+              {error && <Placeholder>Blog unavailable right now</Placeholder>}
+              {posts &&
                 posts.map(post => (
                   <CommunityBlogPost
                     {...post}
                     key={post.url}
                     color={theme.color}
                   />
-                ))
-              ) : (
-                <Placeholder>Blog is unavailable right now</Placeholder>
-              )}
+                ))}
             </CommunityBlock>
           </Item>
           <Item>
@@ -286,7 +279,6 @@ export default function CommunityLearn({ posts, theme }) {
 }
 
 CommunityLearn.propTypes = {
-  posts: PropTypes.array,
   theme: PropTypes.shape({
     backgroundColor: PropTypes.string,
     color: PropTypes.string

diff --git a/src/components/Community/Meet/index.js b/src/components/Community/Meet/index.js
@@ -8,6 +8,7 @@ import CommunitySection from '../Section'
 
 import { pluralizeComments } from '../../../utils/i18n'
 import { logEvent } from '../../../utils/ga'
+import { useIssues, useTopics } from '../../../utils/api'
 
 import data from '../data'
 
@@ -110,7 +111,10 @@ CommunityIssue.propTypes = {
   color: PropTypes.string
 }
 
-export default function CommunityMeet({ issues, theme, topics }) {
+export default function CommunityMeet({ theme }) {
+  const { erorr: issuesError, ready: issuesReady, result: issues } = useIssues()
+  const { erorr: topicsError, ready: topicsReady, result: topics } = useTopics()
+
   return (
     <Wrapper>
       <CommunitySection
@@ -177,7 +181,7 @@ export default function CommunityMeet({ issues, theme, topics }) {
                 </HeaderLink>
               }
               action={
-                topics.length && (
+                topics && (
                   <CommunityButton
                     theme={theme}
                     href="https://discuss.dvc.org"
@@ -191,17 +195,18 @@ export default function CommunityMeet({ issues, theme, topics }) {
               }
               icon="/static/img/community/discourse.svg"
             >
-              {topics.length ? (
+              {!topicsReady && <Placeholder>Loading...</Placeholder>}
+              {topicsError && (
+                <Placeholder>Forum unavailable right now</Placeholder>
+              )}
+              {topics &&
                 topics.map(topic => (
                   <CommunityTopic
                     {...topic}
                     key={topic.url}
                     color={theme.color}
                   />
-                ))
-              ) : (
-                <Placeholder>Forum is unavailable right now</Placeholder>
-              )}
+                ))}
             </CommunityBlock>
           </Item>
           <Item>
@@ -217,7 +222,7 @@ export default function CommunityMeet({ issues, theme, topics }) {
                 </HeaderLink>
               }
               action={
-                issues.length && (
+                issues && (
                   <CommunityButton
                     theme={theme}
                     href="https://github.com/iterative/dvc/issues"
@@ -231,17 +236,18 @@ export default function CommunityMeet({ issues, theme, topics }) {
               }
               icon="/static/img/community/github.svg"
             >
-              {issues.length ? (
+              {!issuesReady && <Placeholder>Loading...</Placeholder>}
+              {issuesError && (
+                <Placeholder>Github unavailable right now</Placeholder>
+              )}
+              {issues &&
                 issues.map(issue => (
                   <CommunityIssue
                     {...issue}
                     key={issue.url}
                     color={theme.color}
                   />
-                ))
-              ) : (
-                <Placeholder>Github is unavailable right now</Placeholder>
-              )}
+                ))}
             </CommunityBlock>
           </Item>
         </Items>
@@ -251,10 +257,8 @@ export default function CommunityMeet({ issues, theme, topics }) {
 }
 
 CommunityMeet.propTypes = {
-  issues: PropTypes.array,
   theme: PropTypes.shape({
     backgroundColor: PropTypes.string,
     color: PropTypes.string
-  }),
-  topics: PropTypes.array
+  })
 }
diff --git a/src/components/Community/index.js b/src/components/Community/index.js
@@ -1,5 +1,4 @@
 import React from 'react'
-import PropTypes from 'prop-types'
 
 import Page from '../Page'
 import Subscribe from '../Subscribe'
@@ -18,23 +17,17 @@ const themes = {
   purple: { backgroundColor: '#DCD6F1', color: '#955DD6' }
 }
 
-export default function Community({ issues, posts, topics }) {
+export default function Community() {
   return (
     <Page stickHeader={true}>
       <PageWrapper>
         <CommunityHero />
-        <CommunityMeet issues={issues} topics={topics} theme={themes.purple} />
+        <CommunityMeet theme={themes.purple} />
         <CommunityContribute theme={themes.orange} />
-        <CommunityLearn posts={posts} theme={themes.green} />
+        <CommunityLearn theme={themes.green} />
         <CommunityEvents theme={themes.purple} />
         <Subscribe />
       </PageWrapper>
     </Page>
   )
 }
-
-Community.propTypes = {
-  issues: PropTypes.array,
-  posts: PropTypes.array,
-  topics: PropTypes.array
-}
diff --git a/src/utils/api.js b/src/utils/api.js
@@ -1,3 +1,4 @@
+import { useEffect, useState } from 'react'
 import fetch from 'isomorphic-fetch'
 
 export function makeAbsoluteURL(req, uri) {
@@ -7,50 +8,64 @@ export function makeAbsoluteURL(req, uri) {
   return `${protocol}//${host}${uri}`
 }
 
-export async function getLatestIssues(req) {
-  try {
-    const res = await fetch(makeAbsoluteURL(req, '/api/github'))
-
-    if (res.status !== 200) return []
-
-    const { issues } = await res.json()
-
-    return issues
-  } catch (e) {
-    console.error(e)
-
-    return []
-  }
+const useAPICall = url => {
+  const [ready, setReady] = useState(false)
+  const [error, setError] = useState(false)
+  const [result, setResult] = useState(null)
+
+  useEffect(() => {
+    let cancelled = false
+
+    const fetchData = async () => {
+      try {
+        const res = await fetch(url)
+
+        if (!cancelled) {
+          if (res.status !== 200) {
+            setError('Bad response status')
+          } else {
+            setResult(await res.json())
+          }
+        }
+      } catch {
+        if (!cancelled) setError('Error loading request')
+      } finally {
+        if (!cancelled) setReady(true)
+      }
+    }
+
+    fetchData()
+
+    return () => {
+      cancelled = true
+    }
+  }, [])
+
+  return { error, ready, result }
 }
 
-export async function getLatestPosts(req) {
-  try {
-    const res = await fetch(makeAbsoluteURL(req, '/api/blog'))
+export function useIssues() {
+  const { error, ready, result } = useAPICall('/api/github')
 
-    if (res.status !== 200) return []
-
-    const { posts } = await res.json()
+  return { error, ready, result: result && result.issues }
+}
 
-    return posts
-  } catch (e) {
-    console.error(e)
+export function usePosts() {
+  const { error, ready, result } = useAPICall('/api/blog')
 
-    return []
-  }
+  return { error, ready, result: result && result.posts }
 }
 
-export async function getLatestTopics(req) {
-  try {
-    const res = await fetch(makeAbsoluteURL(req, '/api/discourse'))
+export function useTopics() {
+  const { error, ready, result } = useAPICall('/api/discourse')
 
-    if (res.status !== 200) return []
-
-    const { topics } = await res.json()
+  return { error, ready, result: result && result.topics }
+}
 
-    return topics
-  } catch (e) {
-    console.error(e)
+export function useCommentsCount(commentsUrl) {
+  const { error, ready, result } = useAPICall(
+    `/api/comments?url=${commentsUrl}`
+  )
 
-    return []
-  }
+  return { error, ready, result: result && result.count }
 }