Add folds links in market, hide tags behind Show tags toggle.

web/components/contract-overview.tsx

@@ -18,16 +18,19 @@ import { ContractFeed } from './contract-feed'
 import { TweetButton } from './tweet-button'
 import { Bet } from '../../common/bet'
 import { Comment } from '../../common/comment'
-import { TagsInput } from './tags-input'
+import { RevealableTagsInput } from './tags-input'
 import BetRow from './bet-row'
+import { Fold } from '../../common/fold'
+import { FoldTagList } from './tags-list'
 
 export const ContractOverview = (props: {
   contract: Contract
   bets: Bet[]
   comments: Comment[]
+  folds: Fold[]
   className?: string
 }) => {
-  const { contract, bets, comments, className } = props
+  const { contract, bets, comments, folds, className } = props
   const { resolution, creatorId, creatorName } = contract
   const { probPercent, truePool } = contractMetrics(contract)
 
@@ -85,11 +88,21 @@ export const ContractOverview = (props: {
 
       <ContractProbGraph contract={contract} />
 
-      <Row className="justify-between mt-6 ml-4 gap-4">
-        <TagsInput contract={contract} />
+      <Row className="hidden sm:flex justify-between items-center mt-6 ml-4 gap-4">
+        <FoldTagList folds={folds} />
         <TweetButton tweetText={tweetText} />
       </Row>
 
+      <Col className="sm:hidden mt-6 ml-4 gap-4">
+        <TweetButton className="self-end" tweetText={tweetText} />
+        <FoldTagList folds={folds} />
+      </Col>
+
+      <RevealableTagsInput
+        className={clsx('mx-4', folds.length > 0 && 'mt-4')}
+        contract={contract}
+      />
+
       <Spacer h={12} />
 
       {/* Show a delete button for contracts without any trading */}

web/components/fold-tag.tsx

@@ -0,0 +1,17 @@
+import clsx from 'clsx'
+import { Fold } from '../../common/fold'
+
+export function FoldTag(props: { fold: Fold }) {
+  const { fold } = props
+  const { name } = fold
+  return (
+    <div
+      className={clsx(
+        'bg-white hover:bg-gray-100 px-4 py-2 rounded-full shadow-md',
+        'cursor-pointer'
+      )}
+    >
+      <span className="text-gray-500">{name}</span>
+    </div>
+  )
+}

web/components/tags-input.tsx

@@ -1,11 +1,13 @@
+import clsx from 'clsx'
 import { useState } from 'react'
 import { parseWordsAsTags } from '../../common/util/parse'
 import { Contract, updateContract } from '../lib/firebase/contracts'
+import { Col } from './layout/col'
 import { Row } from './layout/row'
-import { TagsList } from './tags-list'
+import { CompactTagsList } from './tags-list'
 
-export function TagsInput(props: { contract: Contract }) {
-  const { contract } = props
+export function TagsInput(props: { contract: Contract; className?: string }) {
+  const { contract, className } = props
   const { tags } = contract
 
   const [tagText, setTagText] = useState('')
@@ -24,8 +26,8 @@ export function TagsInput(props: { contract: Contract }) {
   }
 
   return (
-    <Row className="flex-wrap gap-4">
-      <TagsList tags={newTags.map((tag) => `#${tag}`)} />
+    <Col className={clsx('gap-4', className)}>
+      <CompactTagsList tags={newTags.map((tag) => `#${tag}`)} />
 
       <Row className="items-center gap-4">
         <input
@@ -40,6 +42,28 @@ export function TagsInput(props: { contract: Contract }) {
           Save tags
         </button>
       </Row>
-    </Row>
+    </Col>
   )
 }
+
+export function RevealableTagsInput(props: {
+  contract: Contract
+  className?: string
+}) {
+  const { contract, className } = props
+  const [hidden, setHidden] = useState(true)
+
+  if (hidden)
+    return (
+      <div
+        className={clsx(
+          'text-gray-500 cursor-pointer hover:underline hover:decoration-indigo-400 hover:decoration-2',
+          className
+        )}
+        onClick={() => setHidden((hidden) => !hidden)}
+      >
+        Show tags
+      </div>
+    )
+  return <TagsInput className={clsx('pt-2', className)} contract={contract} />
+}

web/components/tags-list.tsx

@@ -2,6 +2,7 @@ import clsx from 'clsx'
 import { Row } from './layout/row'
 import { Linkify } from './linkify'
 import { SiteLink } from './site-link'
+import { Fold } from '../../common/fold'
 
 export function Hashtag(props: { tag: string; noLink?: boolean }) {
   const { tag, noLink } = props
@@ -51,3 +52,36 @@ export function CompactTagsList(props: { tags: string[] }) {
     </Row>
   )
 }
+
+export function FoldTag(props: { fold: Fold }) {
+  const { fold } = props
+  const { name } = fold
+  return (
+    <SiteLink href={`/fold/${fold.slug}`} className="flex items-center">
+      <div
+        className={clsx(
+          'bg-indigo-50 px-4 py-2 rounded-full shadow-md',
+          'cursor-pointer'
+        )}
+      >
+        <span className="text-gray-500 text-sm">{name}</span>
+      </div>
+    </SiteLink>
+  )
+}
+
+export function FoldTagList(props: { folds: Fold[]; className?: string }) {
+  const { folds, className } = props
+  return (
+    <Row className={clsx('flex-wrap gap-2 items-center', className)}>
+      {folds.length > 0 && (
+        <>
+          <div className="text-gray-500 mr-1">Communities</div>
+          {folds.map((fold) => (
+            <FoldTag key={fold.id} fold={fold} />
+          ))}
+        </>
+      )}
+    </Row>
+  )
+}

web/lib/firebase/folds.ts

@@ -131,3 +131,13 @@ export function listenForFollow(
     setFollow(!!value)
   })
 }
+
+export function getFoldsByTags(tags: string[]) {
+  if (tags.length === 0) return []
+
+  const lowercaseTags = tags.map((tag) => tag)
+  return getValues<Fold>(
+    // TODO: split into multiple queries if tags.length > 10.
+    query(foldCollection, where('tags', 'array-contains-any', lowercaseTags))
+  )
+}

web/pages/[username]/[contractSlug].tsx

@@ -23,6 +23,8 @@ import { contractTextDetails } from '../../components/contract-card'
 import { Bet, listAllBets } from '../../lib/firebase/bets'
 import { Comment, listAllComments } from '../../lib/firebase/comments'
 import Custom404 from '../404'
+import { getFoldsByTags } from '../../lib/firebase/folds'
+import { Fold } from '../../../common/fold'
 
 export async function getStaticProps(props: {
   params: { username: string; contractSlug: string }
@@ -31,18 +33,23 @@ export async function getStaticProps(props: {
   const contract = (await getContractFromSlug(contractSlug)) || null
   const contractId = contract?.id
 
+  const foldsPromise = getFoldsByTags(contract?.tags ?? [])
+
   const [bets, comments] = await Promise.all([
-    contractId ? listAllBets(contractId) : null,
-    contractId ? listAllComments(contractId) : null,
+    contractId ? listAllBets(contractId) : [],
+    contractId ? listAllComments(contractId) : [],
   ])
 
+  const folds = await foldsPromise
+
   return {
     props: {
+      contract,
       username,
       slug: contractSlug,
-      contract,
       bets,
       comments,
+      folds,
     },
 
     revalidate: 60, // regenerate after a minute
@@ -55,15 +62,16 @@ export async function getStaticPaths() {
 
 export default function ContractPage(props: {
   contract: Contract | null
-  bets: Bet[] | null
-  comments: Comment[] | null
-  slug: string
   username: string
+  bets: Bet[]
+  comments: Comment[]
+  slug: string
+  folds: Fold[]
 }) {
   const user = useUser()
 
   const contract = useContractWithPreload(props.slug, props.contract)
-  const { bets, comments } = props
+  const { bets, comments, folds } = props
 
   if (!contract) {
     return <Custom404 />
@@ -103,6 +111,7 @@ export default function ContractPage(props: {
             contract={contract}
             bets={bets ?? []}
             comments={comments ?? []}
+            folds={folds}
           />
           <BetsSection contract={contract} user={user ?? null} />
         </div>