From fbf91eab28b5b9a91aa6983a41b4b170632cca9c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adrian=20Brzezin=CC=81ski?= <a.brzezinski94@gmail.com>
Date: Tue, 18 Apr 2023 22:18:03 +0200
Subject: [PATCH] resolve descriptions for proposals

---
 components/governance/Vote/ProposalCard.tsx | 17 ++++++-
 utils/governance/tools.ts                   | 49 +++++++++++++++++++++
 2 files changed, 65 insertions(+), 1 deletion(-)

diff --git a/components/governance/Vote/ProposalCard.tsx b/components/governance/Vote/ProposalCard.tsx
index da1300ba..69b30adb 100644
--- a/components/governance/Vote/ProposalCard.tsx
+++ b/components/governance/Vote/ProposalCard.tsx
@@ -28,6 +28,7 @@ import { PublicKey } from '@solana/web3.js'
 import { notify } from 'utils/notifications'
 import Loading from '@components/shared/Loading'
 import { useTranslation } from 'next-i18next'
+import { resolveProposalDescription } from 'utils/governance/tools'
 
 enum PROCESSED_VOTE_TYPE {
   APPROVE,
@@ -60,10 +61,12 @@ const ProposalCard = ({
     null
   )
   const [isVoteCast, setIsVoteCast] = useState(false)
+  const [description, setDescription] = useState('')
 
   const governance =
     governances && governances[proposal.account.governance.toBase58()]
   const canVote = voter.voteWeight.cmp(new BN(1)) !== -1
+  const descriptionLink = proposal.account.descriptionLink
 
   //Approve 0, deny 1
   const vote = async (voteType: VoteKind) => {
@@ -159,6 +162,18 @@ const ProposalCard = ({
     }
   }, [proposal.pubkey.toBase58(), voter.tokenOwnerRecord?.pubkey.toBase58()])
 
+  useEffect(() => {
+    const handleResolveDescription = async () => {
+      const description = await resolveProposalDescription(descriptionLink!)
+      setDescription(description)
+    }
+    if (descriptionLink) {
+      handleResolveDescription()
+    } else {
+      setDescription('')
+    }
+  }, [descriptionLink])
+
   return governance ? (
     <div
       className="rounded-lg border border-th-bkg-3 p-4 md:p-6"
@@ -174,7 +189,7 @@ const ProposalCard = ({
               <ArrowTopRightOnSquareIcon className="mb-1 inline-block h-4 w-4 flex-shrink-0" />
             </a>
           </h2>
-          <p className="mb-2 md:mb-0">{proposal.account.descriptionLink}</p>
+          <p className="mb-2 md:mb-0">{description}</p>
         </div>
         <VoteCountdown
           proposal={proposal.account}
diff --git a/utils/governance/tools.ts b/utils/governance/tools.ts
index 5cd62355..1b67cdce 100644
--- a/utils/governance/tools.ts
+++ b/utils/governance/tools.ts
@@ -90,3 +90,52 @@ export const tryGetPubKey = (pubkey: string) => {
     return null
   }
 }
+
+const urlRegex =
+  // eslint-disable-next-line
+  /(https:\/\/)(gist\.github.com\/)([\w\/]{1,39}\/)([\w]{1,32})/
+
+export async function fetchGistFile(gistUrl: string) {
+  const controller = new AbortController()
+  const pieces = gistUrl.match(urlRegex)
+  if (pieces) {
+    const justIdWithoutUser = pieces[4]
+    if (justIdWithoutUser) {
+      const apiUrl = 'https://api.github.com/gists/' + justIdWithoutUser
+      const apiResponse = await fetch(apiUrl, {
+        signal: controller.signal,
+      })
+      const jsonContent = await apiResponse.json()
+      if (apiResponse.status === 200) {
+        const nextUrlFileName = Object.keys(jsonContent['files'])[0]
+        const nextUrl = jsonContent['files'][nextUrlFileName]['raw_url']
+        if (nextUrl.startsWith('https://gist.githubusercontent.com/')) {
+          const fileResponse = await fetch(nextUrl, {
+            signal: controller.signal,
+          })
+          const body = await fileResponse.json()
+          //console.log('fetchGistFile file', gistUrl, fileResponse)
+          return body
+        }
+        return undefined
+      } else {
+        console.warn('could not fetchGistFile', {
+          gistUrl,
+          apiResponse: jsonContent,
+        })
+      }
+    }
+  }
+
+  return undefined
+}
+
+export async function resolveProposalDescription(descriptionLink: string) {
+  try {
+    const url = new URL(descriptionLink)
+    const desc = (await fetchGistFile(url.toString())) ?? descriptionLink
+    return desc
+  } catch {
+    return descriptionLink
+  }
+}