From 1d618ba337291a708e09c992493be4a1df8775a3 Mon Sep 17 00:00:00 2001
From: ingawei <46611122+ingawei@users.noreply.github.com>
Date: Wed, 12 Oct 2022 13:05:58 -0500
Subject: [PATCH] Inga/fr remove double comments (#1019)

incorporating answer comments into general comments section
---
 web/components/answers/answers-panel.tsx      |  16 +-
 web/components/comment-input.tsx              |  43 ++-
 web/components/comments/reply-toggle.tsx      |  29 ++
 web/components/contract/contract-tabs.tsx     | 169 +++++----
 web/components/contract/tip-button.tsx        |   2 +-
 web/components/feed/copy-link-date-time.tsx   |   2 +-
 .../feed/feed-answer-comment-group.tsx        | 122 +------
 web/components/feed/feed-comments.tsx         | 322 ++++++++++++------
 web/pages/[username]/[contractSlug].tsx       |  39 ++-
 web/public/custom-components/curve.tsx        |  19 ++
 10 files changed, 470 insertions(+), 293 deletions(-)
 create mode 100644 web/components/comments/reply-toggle.tsx
 create mode 100644 web/public/custom-components/curve.tsx

diff --git a/web/components/answers/answers-panel.tsx b/web/components/answers/answers-panel.tsx
index a665a921..f048d8e9 100644
--- a/web/components/answers/answers-panel.tsx
+++ b/web/components/answers/answers-panel.tsx
@@ -25,12 +25,14 @@ import { useAdmin } from 'web/hooks/use-admin'
 import { needsAdminToResolve } from 'web/pages/[username]/[contractSlug]'
 import { CHOICE_ANSWER_COLORS } from '../charts/contract/choice'
 import { useChartAnswers } from '../charts/contract/choice'
+import { ChatIcon } from '@heroicons/react/outline'
 
 export function AnswersPanel(props: {
   contract: FreeResponseContract | MultipleChoiceContract
+  onAnswerCommentClick: (answer: Answer) => void
 }) {
   const isAdmin = useAdmin()
-  const { contract } = props
+  const { contract, onAnswerCommentClick } = props
   const { creatorId, resolution, resolutions, totalBets, outcomeType } =
     contract
   const [showAllAnswers, setShowAllAnswers] = useState(false)
@@ -138,6 +140,7 @@ export function AnswersPanel(props: {
               answer={item}
               contract={contract}
               colorIndex={colorSortedAnswer.indexOf(item.text)}
+              onAnswerCommentClick={onAnswerCommentClick}
             />
           ))}
           {hasZeroBetAnswers && !showAllAnswers && (
@@ -183,8 +186,9 @@ function OpenAnswer(props: {
   contract: FreeResponseContract | MultipleChoiceContract
   answer: Answer
   colorIndex: number | undefined
+  onAnswerCommentClick: (answer: Answer) => void
 }) {
-  const { answer, contract, colorIndex } = props
+  const { answer, contract, colorIndex, onAnswerCommentClick } = props
   const { username, avatarUrl, text } = answer
   const prob = getDpmOutcomeProbability(contract.totalShares, answer.id)
   const probPercent = formatPercent(prob)
@@ -240,6 +244,14 @@ function OpenAnswer(props: {
                 BUY
               </Button>
             )}
+            {
+              <button
+                className="p-1"
+                onClick={() => onAnswerCommentClick(answer)}
+              >
+                <ChatIcon className="text-greyscale-4 hover:text-greyscale-6 h-5 w-5 transition-colors" />
+              </button>
+            }
           </Row>
         </Row>
       </Col>
diff --git a/web/components/comment-input.tsx b/web/components/comment-input.tsx
index 460fa438..385c7828 100644
--- a/web/components/comment-input.tsx
+++ b/web/components/comment-input.tsx
@@ -1,12 +1,17 @@
-import { PaperAirplaneIcon } from '@heroicons/react/solid'
+import { PaperAirplaneIcon, XCircleIcon } from '@heroicons/react/solid'
 import { Editor } from '@tiptap/react'
 import clsx from 'clsx'
+import { Answer } from 'common/answer'
+import { AnyContractType, Contract } from 'common/contract'
 import { User } from 'common/user'
 import { useEffect, useState } from 'react'
 import { useUser } from 'web/hooks/use-user'
 import { MAX_COMMENT_LENGTH } from 'web/lib/firebase/comments'
+import Curve from 'web/public/custom-components/curve'
 import { Avatar } from './avatar'
 import { TextEditor, useTextEditor } from './editor'
+import { CommentsAnswer } from './feed/feed-answer-comment-group'
+import { ContractCommentInput } from './feed/feed-comments'
 import { Row } from './layout/row'
 import { LoadingIndicator } from './loading-indicator'
 
@@ -72,6 +77,40 @@ export function CommentInput(props: {
     </Row>
   )
 }
+export function AnswerCommentInput(props: {
+  contract: Contract<AnyContractType>
+  answerResponse: Answer
+  onCancelAnswerResponse?: () => void
+}) {
+  const { contract, answerResponse, onCancelAnswerResponse } = props
+  const replyTo = {
+    id: answerResponse.id,
+    username: answerResponse.username,
+  }
+
+  return (
+    <>
+      <CommentsAnswer answer={answerResponse} contract={contract} />
+      <Row>
+        <div className="ml-1">
+          <Curve size={28} strokeWidth={1} color="#D8D8EB" />
+        </div>
+        <div className="relative w-full pt-1">
+          <ContractCommentInput
+            contract={contract}
+            parentAnswerOutcome={answerResponse.number.toString()}
+            replyTo={replyTo}
+            onSubmitComment={onCancelAnswerResponse}
+          />
+          <button onClick={onCancelAnswerResponse}>
+            <div className="absolute -top-1 -right-2 h-4 w-4 rounded-full bg-white" />
+            <XCircleIcon className="text-greyscale-5 hover:text-greyscale-6 absolute -top-1 -right-2 h-5 w-5" />
+          </button>
+        </div>
+      </Row>
+    </>
+  )
+}
 
 export function CommentInputTextArea(props: {
   user: User | undefined | null
@@ -123,7 +162,7 @@ export function CommentInputTextArea(props: {
           attrs: { label: replyTo.username, id: replyTo.id },
         })
         .insertContent(' ')
-        .focus()
+        .focus(undefined, { scrollIntoView: false })
         .run()
     }
     // eslint-disable-next-line react-hooks/exhaustive-deps
diff --git a/web/components/comments/reply-toggle.tsx b/web/components/comments/reply-toggle.tsx
new file mode 100644
index 00000000..934efe53
--- /dev/null
+++ b/web/components/comments/reply-toggle.tsx
@@ -0,0 +1,29 @@
+import clsx from 'clsx'
+import TriangleDownFillIcon from 'web/lib/icons/triangle-down-fill-icon'
+import { Row } from '../layout/row'
+
+export function ReplyToggle(props: {
+  seeReplies: boolean
+  numComments: number
+  onClick: () => void
+}) {
+  const { seeReplies, numComments, onClick } = props
+  return (
+    <button
+      className={clsx(
+        'text-left text-sm text-indigo-600',
+        numComments === 0 ? 'hidden' : ''
+      )}
+      onClick={onClick}
+    >
+      <Row className="items-center gap-1">
+        <div>
+          {numComments} {numComments === 1 ? 'Reply' : 'Replies'}
+        </div>
+        <TriangleDownFillIcon
+          className={clsx('h-2 w-2', seeReplies ? 'rotate-180' : '')}
+        />
+      </Row>
+    </button>
+  )
+}
diff --git a/web/components/contract/contract-tabs.tsx b/web/components/contract/contract-tabs.tsx
index 8531697b..b8b57510 100644
--- a/web/components/contract/contract-tabs.tsx
+++ b/web/components/contract/contract-tabs.tsx
@@ -1,9 +1,8 @@
 import { memo, useState } from 'react'
-import { getOutcomeProbability } from 'common/calculate'
 import { Pagination } from 'web/components/pagination'
 import { FeedBet } from '../feed/feed-bets'
 import { FeedLiquidity } from '../feed/feed-liquidity'
-import { FeedAnswerCommentGroup } from '../feed/feed-answer-comment-group'
+import { CommentsAnswer } from '../feed/feed-answer-comment-group'
 import { FeedCommentThread, ContractCommentInput } from '../feed/feed-comments'
 import { groupBy, sortBy, sum } from 'lodash'
 import { Bet } from 'common/bet'
@@ -25,7 +24,6 @@ import {
 import { buildArray } from 'common/util/array'
 import { ContractComment } from 'common/comment'
 
-import { Button } from 'web/components/button'
 import { MINUTE_MS } from 'common/util/time'
 import { useUser } from 'web/hooks/use-user'
 import { Tooltip } from 'web/components/tooltip'
@@ -36,14 +34,27 @@ import {
   usePersistentState,
 } from 'web/hooks/use-persistent-state'
 import { safeLocalStorage } from 'web/lib/util/local'
+import TriangleDownFillIcon from 'web/lib/icons/triangle-down-fill-icon'
+import Curve from 'web/public/custom-components/curve'
+import { Answer } from 'common/answer'
+import { AnswerCommentInput } from '../comment-input'
 
 export function ContractTabs(props: {
   contract: Contract
   bets: Bet[]
   userBets: Bet[]
   comments: ContractComment[]
+  answerResponse?: Answer | undefined
+  onCancelAnswerResponse?: () => void
 }) {
-  const { contract, bets, userBets, comments } = props
+  const {
+    contract,
+    bets,
+    userBets,
+    comments,
+    answerResponse,
+    onCancelAnswerResponse,
+  } = props
 
   const yourTrades = (
     <div>
@@ -56,7 +67,14 @@ export function ContractTabs(props: {
   const tabs = buildArray(
     {
       title: 'Comments',
-      content: <CommentsTabContent contract={contract} comments={comments} />,
+      content: (
+        <CommentsTabContent
+          contract={contract}
+          comments={comments}
+          answerResponse={answerResponse}
+          onCancelAnswerResponse={onCancelAnswerResponse}
+        />
+      ),
     },
     bets.length > 0 && {
       title: capitalize(PAST_BETS),
@@ -76,8 +94,10 @@ export function ContractTabs(props: {
 const CommentsTabContent = memo(function CommentsTabContent(props: {
   contract: Contract
   comments: ContractComment[]
+  answerResponse?: Answer
+  onCancelAnswerResponse?: () => void
 }) {
-  const { contract } = props
+  const { contract, answerResponse, onCancelAnswerResponse } = props
   const tips = useTipTxns({ contractId: contract.id })
   const comments = useComments(contract.id) ?? props.comments
   const [sort, setSort] = usePersistentState<'Newest' | 'Best'>('Newest', {
@@ -95,10 +115,7 @@ const CommentsTabContent = memo(function CommentsTabContent(props: {
 
   // replied to answers/comments are NOT newest, otherwise newest first
   const shouldBeNewestFirst = (c: ContractComment) =>
-    c.replyToCommentId == undefined &&
-    (contract.outcomeType === 'FREE_RESPONSE'
-      ? c.betId === undefined && c.answerOutcome == undefined
-      : true)
+    c.replyToCommentId == undefined
 
   // TODO: links to comments are broken because tips load after render and
   //  comments will reorganize themselves if there are tips/bounties awarded
@@ -123,73 +140,85 @@ const CommentsTabContent = memo(function CommentsTabContent(props: {
   const topLevelComments = commentsByParent['_'] ?? []
 
   const sortRow = comments.length > 0 && (
-    <Row className="mb-4 items-center">
-      <Button
-        size={'xs'}
-        color={'gray-white'}
-        onClick={() => setSort(sort === 'Newest' ? 'Best' : 'Newest')}
-      >
-        <Tooltip
-          text={
-            sort === 'Best'
-              ? 'Highest tips + bounties first. Your new comments briefly appear to you first.'
-              : ''
-          }
-        >
-          Sort by: {sort}
-        </Tooltip>
-      </Button>
-
+    <Row className="mb-4 items-center justify-end gap-4">
       <BountiedContractSmallBadge contract={contract} showAmount />
+      <Row className="items-center gap-1">
+        <div className="text-greyscale-4 text-sm">Sort by:</div>
+        <button
+          className="text-greyscale-6 w-20 text-sm"
+          onClick={() => setSort(sort === 'Newest' ? 'Best' : 'Newest')}
+        >
+          <Tooltip
+            text={sort === 'Best' ? 'Highest tips + bounties first.' : ''}
+          >
+            <Row className="items-center gap-1">
+              {sort}
+              <TriangleDownFillIcon className=" h-2 w-2" />
+            </Row>
+          </Tooltip>
+        </button>
+      </Row>
     </Row>
   )
-
   if (contract.outcomeType === 'FREE_RESPONSE') {
-    const sortedAnswers = sortBy(
-      contract.answers,
-      (a) => -getOutcomeProbability(contract, a.id)
-    )
-    const commentsByOutcome = groupBy(
-      sortedComments,
-      (c) => c.answerOutcome ?? c.betOutcome ?? '_'
-    )
-    const generalTopLevelComments = topLevelComments.filter(
-      (c) => c.answerOutcome === undefined && c.betId === undefined
-    )
-
     return (
       <>
+        <ContractCommentInput className="mb-5" contract={contract} />
         {sortRow}
-        {sortedAnswers.map((answer) => (
-          <div key={answer.id} className="relative pb-4">
-            <span
-              className="absolute top-5 left-5 -ml-px h-[calc(100%-2rem)] w-0.5 bg-gray-200"
-              aria-hidden="true"
-            />
-            <FeedAnswerCommentGroup
-              contract={contract}
-              answer={answer}
-              answerComments={commentsByOutcome[answer.number.toString()] ?? []}
-              tips={tips}
-            />
-          </div>
-        ))}
-        <Col className="mt-8 flex w-full">
-          <div className="text-md mt-8 mb-2 text-left">General Comments</div>
-          <div className="mb-4 w-full border-b border-gray-200" />
-          <ContractCommentInput className="mb-5" contract={contract} />
-          {sortRow}
-
-          {generalTopLevelComments.map((comment) => (
-            <FeedCommentThread
-              key={comment.id}
-              contract={contract}
-              parentComment={comment}
-              threadComments={commentsByParent[comment.id] ?? []}
-              tips={tips}
-            />
-          ))}
-        </Col>
+        {answerResponse && (
+          <AnswerCommentInput
+            contract={contract}
+            answerResponse={answerResponse}
+            onCancelAnswerResponse={onCancelAnswerResponse}
+          />
+        )}
+        {topLevelComments.map((parent) => {
+          if (parent.answerOutcome === undefined) {
+            return (
+              <FeedCommentThread
+                key={parent.id}
+                contract={contract}
+                parentComment={parent}
+                threadComments={sortBy(
+                  commentsByParent[parent.id] ?? [],
+                  (c) => c.createdTime
+                )}
+                tips={tips}
+              />
+            )
+          }
+          const answer = contract.answers.find(
+            (answer) => answer.id === parent.answerOutcome
+          )
+          if (answer === undefined) {
+            console.error('Could not find answer that matches ID')
+            return <></>
+          }
+          return (
+            <>
+              <Row className="gap-2">
+                <CommentsAnswer answer={answer} contract={contract} />
+              </Row>
+              <Row>
+                <div className="ml-1">
+                  <Curve size={28} strokeWidth={1} color="#D8D8EB" />
+                </div>
+                <div className="w-full pt-1">
+                  <FeedCommentThread
+                    key={parent.id}
+                    contract={contract}
+                    parentComment={parent}
+                    threadComments={sortBy(
+                      commentsByParent[parent.id] ?? [],
+                      (c) => c.createdTime
+                    )}
+                    tips={tips}
+                  />
+                </div>
+              </Row>
+            </>
+          )
+        })}
       </>
     )
   } else {
diff --git a/web/components/contract/tip-button.tsx b/web/components/contract/tip-button.tsx
index b974938f..df245c68 100644
--- a/web/components/contract/tip-button.tsx
+++ b/web/components/contract/tip-button.tsx
@@ -44,7 +44,7 @@ export function TipButton(props: {
         <Col className={'relative items-center sm:flex-row'}>
           <HeartIcon
             className={clsx(
-              'h-5 w-5 sm:h-6 sm:w-6',
+              'h-5 w-5',
               totalTipped > 0 ? 'mr-2' : '',
               userTipped ? 'fill-teal-500 text-teal-500' : ''
             )}
diff --git a/web/components/feed/copy-link-date-time.tsx b/web/components/feed/copy-link-date-time.tsx
index d4401b8c..6b6b911a 100644
--- a/web/components/feed/copy-link-date-time.tsx
+++ b/web/components/feed/copy-link-date-time.tsx
@@ -33,7 +33,7 @@ export function CopyLinkDateTimeComponent(props: {
         <a
           onClick={copyLinkToComment}
           className={
-            'mx-1 whitespace-nowrap rounded-sm px-1 text-gray-400 hover:bg-gray-100'
+            'text-greyscale-4 hover:bg-greyscale-1.5 mx-1 whitespace-nowrap rounded-sm px-1 text-xs transition-colors'
           }
         >
           {fromNow(createdTime)}
diff --git a/web/components/feed/feed-answer-comment-group.tsx b/web/components/feed/feed-answer-comment-group.tsx
index 11bc6139..e1b470a7 100644
--- a/web/components/feed/feed-answer-comment-group.tsx
+++ b/web/components/feed/feed-answer-comment-group.tsx
@@ -1,46 +1,21 @@
 import { Answer } from 'common/answer'
-import { FreeResponseContract } from 'common/contract'
-import { ContractComment } from 'common/comment'
-import React, { useEffect, useRef, useState } from 'react'
-import { sum } from 'lodash'
+import { Contract } from 'common/contract'
+import React, { useEffect, useRef } from 'react'
 import { Col } from 'web/components/layout/col'
 import { Row } from 'web/components/layout/row'
 import { Avatar } from 'web/components/avatar'
-import { Linkify } from 'web/components/linkify'
-import clsx from 'clsx'
-import {
-  ContractCommentInput,
-  FeedComment,
-  ReplyTo,
-} from 'web/components/feed/feed-comments'
 import { CopyLinkDateTimeComponent } from 'web/components/feed/copy-link-date-time'
 import { useRouter } from 'next/router'
-import { useUser } from 'web/hooks/use-user'
-import { useEvent } from 'web/hooks/use-event'
-import { CommentTipMap } from 'web/hooks/use-tip-txns'
 import { UserLink } from 'web/components/user-link'
 
-export function FeedAnswerCommentGroup(props: {
-  contract: FreeResponseContract
-  answer: Answer
-  answerComments: ContractComment[]
-  tips: CommentTipMap
-}) {
-  const { answer, contract, answerComments, tips } = props
+export function CommentsAnswer(props: { answer: Answer; contract: Contract }) {
+  const { answer, contract } = props
   const { username, avatarUrl, name, text } = answer
-
-  const [replyTo, setReplyTo] = useState<ReplyTo>()
-  const user = useUser()
-  const router = useRouter()
   const answerElementId = `answer-${answer.id}`
+  const router = useRouter()
   const highlighted = router.asPath.endsWith(`#${answerElementId}`)
   const answerRef = useRef<HTMLDivElement>(null)
 
-  const onSubmitComment = useEvent(() => setReplyTo(undefined))
-  const onReplyClick = useEvent((comment: ContractComment) => {
-    setReplyTo({ id: comment.id, username: comment.userUsername })
-  })
-
   useEffect(() => {
     if (highlighted && answerRef.current != null) {
       answerRef.current.scrollIntoView(true)
@@ -48,83 +23,20 @@ export function FeedAnswerCommentGroup(props: {
   }, [highlighted])
 
   return (
-    <Col className="relative flex-1 items-stretch gap-3">
-      <Row
-        className={clsx(
-          'gap-3 space-x-3 pt-4 transition-all duration-1000',
-          highlighted ? `-m-2 my-3 rounded bg-indigo-500/[0.2] p-2` : ''
-        )}
-        ref={answerRef}
-        id={answerElementId}
-      >
-        <Avatar username={username} avatarUrl={avatarUrl} />
-
-        <Col className="min-w-0 flex-1 lg:gap-1">
-          <div className="text-sm text-gray-500">
-            <UserLink username={username} name={name} /> answered
-            <CopyLinkDateTimeComponent
-              prefix={contract.creatorUsername}
-              slug={contract.slug}
-              createdTime={answer.createdTime}
-              elementId={answerElementId}
-            />
-          </div>
-
-          <Col className="align-items justify-between gap-2 sm:flex-row">
-            <span className="whitespace-pre-line text-lg">
-              <Linkify text={text} />
-            </span>
-            <div className="sm:hidden">
-              <button
-                className="text-xs font-bold text-gray-500 hover:underline"
-                onClick={() =>
-                  setReplyTo({ id: answer.id, username: answer.username })
-                }
-              >
-                Reply
-              </button>
-            </div>
-          </Col>
-          <div className="justify-initial hidden sm:block">
-            <button
-              className="text-xs font-bold text-gray-500 hover:underline"
-              onClick={() =>
-                setReplyTo({ id: answer.id, username: answer.username })
-              }
-            >
-              Reply
-            </button>
-          </div>
-        </Col>
-      </Row>
-      <Col className="gap-3 pl-1">
-        {answerComments.map((comment) => (
-          <FeedComment
-            key={comment.id}
-            indent={true}
-            contract={contract}
-            comment={comment}
-            myTip={user ? tips[comment.id]?.[user.id] : undefined}
-            totalTip={sum(Object.values(tips[comment.id] ?? {}))}
-            showTip={true}
-            onReplyClick={onReplyClick}
-          />
-        ))}
-      </Col>
-      {replyTo && (
-        <div className="relative ml-7">
-          <span
-            className="absolute -left-1 -ml-[1px] mt-[1.25rem] h-2 w-0.5 rotate-90 bg-gray-200"
-            aria-hidden="true"
-          />
-          <ContractCommentInput
-            contract={contract}
-            parentAnswerOutcome={answer.number.toString()}
-            replyTo={replyTo}
-            onSubmitComment={onSubmitComment}
+    <Col className="bg-greyscale-2 w-fit gap-1 rounded-t-xl rounded-bl-xl py-2 px-4">
+      <Row className="gap-2">
+        <Avatar username={username} avatarUrl={avatarUrl} size="xxs" />
+        <div className="text-greyscale-6 text-xs">
+          <UserLink username={username} name={name} /> answered
+          <CopyLinkDateTimeComponent
+            prefix={contract.creatorUsername}
+            slug={contract.slug}
+            createdTime={answer.createdTime}
+            elementId={answerElementId}
           />
         </div>
-      )}
+      </Row>
+      <div className="text-sm">{text}</div>
     </Col>
   )
 }
diff --git a/web/components/feed/feed-comments.tsx b/web/components/feed/feed-comments.tsx
index 552bfe7c..07a0d214 100644
--- a/web/components/feed/feed-comments.tsx
+++ b/web/components/feed/feed-comments.tsx
@@ -23,6 +23,9 @@ import { Content } from '../editor'
 import { UserLink } from 'web/components/user-link'
 import { CommentInput } from '../comment-input'
 import { AwardBountyButton } from 'web/components/award-bounty-button'
+import { ReplyIcon } from '@heroicons/react/solid'
+import { Button } from '../button'
+import { ReplyToggle } from '../comments/reply-toggle'
 
 export type ReplyTo = { id: string; username: string }
 
@@ -34,6 +37,7 @@ export function FeedCommentThread(props: {
 }) {
   const { contract, threadComments, tips, parentComment } = props
   const [replyTo, setReplyTo] = useState<ReplyTo>()
+  const [seeReplies, setSeeReplies] = useState(false)
 
   const user = useUser()
   const onSubmitComment = useEvent(() => setReplyTo(undefined))
@@ -43,28 +47,37 @@ export function FeedCommentThread(props: {
 
   return (
     <Col className="relative w-full items-stretch gap-3 pb-4">
-      <span
-        className="absolute top-5 left-4 -ml-px h-[calc(100%-2rem)] w-0.5 bg-gray-200"
-        aria-hidden="true"
+      <ParentFeedComment
+        key={parentComment.id}
+        contract={contract}
+        comment={parentComment}
+        myTip={user ? tips[parentComment.id]?.[user.id] : undefined}
+        totalTip={sum(Object.values(tips[parentComment.id] ?? {}))}
+        showTip={true}
+        seeReplies={seeReplies}
+        numComments={threadComments.length}
+        onSeeReplyClick={() => setSeeReplies(!seeReplies)}
+        onReplyClick={() =>
+          setReplyTo({
+            id: parentComment.id,
+            username: parentComment.userUsername,
+          })
+        }
       />
-      {[parentComment].concat(threadComments).map((comment, commentIdx) => (
-        <FeedComment
-          key={comment.id}
-          indent={commentIdx != 0}
-          contract={contract}
-          comment={comment}
-          myTip={user ? tips[comment.id]?.[user.id] : undefined}
-          totalTip={sum(Object.values(tips[comment.id] ?? {}))}
-          showTip={true}
-          onReplyClick={onReplyClick}
-        />
-      ))}
+      {seeReplies &&
+        threadComments.map((comment, _commentIdx) => (
+          <FeedComment
+            key={comment.id}
+            contract={contract}
+            comment={comment}
+            myTip={user ? tips[comment.id]?.[user.id] : undefined}
+            totalTip={sum(Object.values(tips[comment.id] ?? {}))}
+            showTip={true}
+            onReplyClick={onReplyClick}
+          />
+        ))}
       {replyTo && (
         <Col className="-pb-2 relative ml-6">
-          <span
-            className="absolute -left-1 -ml-[1px] mt-[0.8rem] h-2 w-0.5 rotate-90 bg-gray-200"
-            aria-hidden="true"
-          />
           <ContractCommentInput
             contract={contract}
             parentCommentId={parentComment.id}
@@ -77,38 +90,110 @@ export function FeedCommentThread(props: {
   )
 }
 
+export function ParentFeedComment(props: {
+  contract: Contract
+  comment: ContractComment
+  showTip?: boolean
+  myTip?: number
+  totalTip?: number
+  seeReplies: boolean
+  numComments: number
+  onReplyClick?: (comment: ContractComment) => void
+  onSeeReplyClick: () => void
+}) {
+  const {
+    contract,
+    comment,
+    myTip,
+    totalTip,
+    showTip,
+    onReplyClick,
+    onSeeReplyClick,
+    seeReplies,
+    numComments,
+  } = props
+  const { text, content, userUsername, userAvatarUrl } = comment
+
+  const { isReady, asPath } = useRouter()
+  const [highlighted, setHighlighted] = useState(false)
+  const commentRef = useRef<HTMLDivElement>(null)
+
+  useEffect(() => {
+    if (isReady && asPath.endsWith(`#${comment.id}`)) {
+      setHighlighted(true)
+    }
+  }, [isReady, asPath, comment.id])
+
+  useEffect(() => {
+    if (highlighted && commentRef.current) {
+      commentRef.current.scrollIntoView(true)
+    }
+  }, [highlighted])
+  return (
+    <Row
+      ref={commentRef}
+      id={comment.id}
+      className={clsx(
+        'hover:bg-greyscale-1 ml-3 gap-2 transition-colors',
+        highlighted ? `-m-1.5 rounded bg-indigo-500/[0.2] p-1.5` : ''
+      )}
+    >
+      <Col className="-ml-3.5">
+        <Avatar size="sm" username={userUsername} avatarUrl={userAvatarUrl} />
+      </Col>
+      <Col className="w-full">
+        <FeedCommentHeader comment={comment} contract={contract} />
+        <Content
+          className="text-greyscale-7 mt-2 grow text-[14px]"
+          content={content || text}
+          smallImage
+        />
+        <Row className="justify-between">
+          <ReplyToggle
+            seeReplies={seeReplies}
+            numComments={numComments}
+            onClick={onSeeReplyClick}
+          />
+          <Row className="grow justify-end gap-2">
+            {onReplyClick && (
+              <Button
+                size={'sm'}
+                className={clsx(
+                  'hover:bg-greyscale-2 mt-0 mb-1 max-w-xs px-0 py-0'
+                )}
+                color={'gray-white'}
+                onClick={() => onReplyClick(comment)}
+              >
+                <ReplyIcon className="h-5 w-5" />
+              </Button>
+            )}
+            {showTip && (
+              <Tipper
+                comment={comment}
+                myTip={myTip ?? 0}
+                totalTip={totalTip ?? 0}
+              />
+            )}
+            {(contract.openCommentBounties ?? 0) > 0 && (
+              <AwardBountyButton comment={comment} contract={contract} />
+            )}
+          </Row>
+        </Row>
+      </Col>
+    </Row>
+  )
+}
+
 export const FeedComment = memo(function FeedComment(props: {
   contract: Contract
   comment: ContractComment
   showTip?: boolean
   myTip?: number
   totalTip?: number
-  indent?: boolean
   onReplyClick?: (comment: ContractComment) => void
 }) {
-  const { contract, comment, myTip, totalTip, showTip, indent, onReplyClick } =
-    props
-  const {
-    text,
-    content,
-    userUsername,
-    userName,
-    userAvatarUrl,
-    commenterPositionProb,
-    commenterPositionShares,
-    commenterPositionOutcome,
-    createdTime,
-    bountiesAwarded,
-  } = comment
-  const betOutcome = comment.betOutcome
-  let bought: string | undefined
-  let money: string | undefined
-  if (comment.betAmount != null) {
-    bought = comment.betAmount >= 0 ? 'bought' : 'sold'
-    money = formatMoney(Math.abs(comment.betAmount))
-  }
-  const totalAwarded = bountiesAwarded ?? 0
-
+  const { contract, comment, myTip, totalTip, showTip, onReplyClick } = props
+  const { text, content, userUsername, userAvatarUrl } = comment
   const { isReady, asPath } = useRouter()
   const [highlighted, setHighlighted] = useState(false)
   const commentRef = useRef<HTMLDivElement>(null)
@@ -130,78 +215,36 @@ export const FeedComment = memo(function FeedComment(props: {
       ref={commentRef}
       id={comment.id}
       className={clsx(
-        'relative',
-        indent ? 'ml-6' : '',
-        highlighted ? `-m-1.5 rounded bg-indigo-500/[0.2] px-2 py-4` : ''
+        'hover:bg-greyscale-1 ml-10 gap-2 transition-colors',
+        highlighted ? `-m-1.5 rounded bg-indigo-500/[0.2] p-1.5` : ''
       )}
     >
-      {/*draw a gray line from the comment to the left:*/}
-      {indent ? (
+      <Col className="-ml-3">
+        <Avatar size="xs" username={userUsername} avatarUrl={userAvatarUrl} />
         <span
-          className="absolute -left-1 -ml-[1px] mt-[0.8rem] h-2 w-0.5 rotate-90 bg-gray-200"
+          className="bg-greyscale-3 mx-auto h-full w-[1.5px]"
           aria-hidden="true"
         />
-      ) : null}
-      <Avatar size="sm" username={userUsername} avatarUrl={userAvatarUrl} />
-      <div className="ml-1.5 min-w-0 flex-1 pl-0.5 sm:ml-3">
-        <div className="mt-0.5 text-sm text-gray-500">
-          <UserLink
-            className="text-gray-500"
-            username={userUsername}
-            name={userName}
-          />{' '}
-          {comment.betId == null &&
-            commenterPositionProb != null &&
-            commenterPositionOutcome != null &&
-            commenterPositionShares != null &&
-            commenterPositionShares > 0 &&
-            contract.outcomeType !== 'NUMERIC' && (
-              <>
-                {'is '}
-                <CommentStatus
-                  prob={commenterPositionProb}
-                  outcome={commenterPositionOutcome}
-                  contract={contract}
-                />
-              </>
-            )}
-          {bought} {money}
-          {contract.outcomeType !== 'FREE_RESPONSE' && betOutcome && (
-            <>
-              {' '}
-              of{' '}
-              <OutcomeLabel
-                outcome={betOutcome ? betOutcome : ''}
-                contract={contract}
-                truncate="short"
-              />
-            </>
-          )}
-          <CopyLinkDateTimeComponent
-            prefix={contract.creatorUsername}
-            slug={contract.slug}
-            createdTime={createdTime}
-            elementId={comment.id}
-          />
-          {totalAwarded > 0 && (
-            <span className=" text-primary ml-2 text-sm">
-              +{formatMoney(totalAwarded)}
-            </span>
-          )}
-        </div>
+      </Col>
+      <Col className="w-full">
+        <FeedCommentHeader comment={comment} contract={contract} />
         <Content
-          className="mt-2 text-[15px] text-gray-700"
+          className="text-greyscale-7 mt-2 grow text-[14px]"
           content={content || text}
           smallImage
         />
-        <Row className="mt-2 items-center gap-6 text-xs text-gray-500">
+        <Row className="grow justify-end gap-2">
           {onReplyClick && (
-            <button
-              className="font-bold hover:underline"
+            <Button
+              size={'sm'}
+              className={clsx(
+                'hover:bg-greyscale-2 mt-0 mb-1 max-w-xs px-0 py-0'
+              )}
+              color={'gray-white'}
               onClick={() => onReplyClick(comment)}
             >
-              Reply
-            </button>
+              <ReplyIcon className="h-5 w-5" />
+            </Button>
           )}
           {showTip && (
             <Tipper
@@ -214,7 +257,7 @@ export const FeedComment = memo(function FeedComment(props: {
             <AwardBountyButton comment={comment} contract={contract} />
           )}
         </Row>
-      </div>
+      </Col>
     </Row>
   )
 })
@@ -273,3 +316,74 @@ export function ContractCommentInput(props: {
     />
   )
 }
+
+export function FeedCommentHeader(props: {
+  comment: ContractComment
+  contract: Contract
+}) {
+  const { comment, contract } = props
+  const {
+    userUsername,
+    userName,
+    commenterPositionProb,
+    commenterPositionShares,
+    commenterPositionOutcome,
+    createdTime,
+    bountiesAwarded,
+  } = comment
+  const betOutcome = comment.betOutcome
+  let bought: string | undefined
+  let money: string | undefined
+  if (comment.betAmount != null) {
+    bought = comment.betAmount >= 0 ? 'bought' : 'sold'
+    money = formatMoney(Math.abs(comment.betAmount))
+  }
+  const totalAwarded = bountiesAwarded ?? 0
+  return (
+    <Row>
+      <div className="text-greyscale-6 mt-0.5 text-xs">
+        <UserLink username={userUsername} name={userName} />{' '}
+        <span className="text-greyscale-4">
+          {comment.betId == null &&
+            commenterPositionProb != null &&
+            commenterPositionOutcome != null &&
+            commenterPositionShares != null &&
+            commenterPositionShares > 0 &&
+            contract.outcomeType !== 'NUMERIC' && (
+              <>
+                {'is '}
+                <CommentStatus
+                  prob={commenterPositionProb}
+                  outcome={commenterPositionOutcome}
+                  contract={contract}
+                />
+              </>
+            )}
+          {bought} {money}
+          {contract.outcomeType !== 'FREE_RESPONSE' && betOutcome && (
+            <>
+              {' '}
+              of{' '}
+              <OutcomeLabel
+                outcome={betOutcome ? betOutcome : ''}
+                contract={contract}
+                truncate="short"
+              />
+            </>
+          )}
+        </span>
+        <CopyLinkDateTimeComponent
+          prefix={contract.creatorUsername}
+          slug={contract.slug}
+          createdTime={createdTime}
+          elementId={comment.id}
+        />
+        {totalAwarded > 0 && (
+          <span className=" text-primary ml-2 text-sm">
+            +{formatMoney(totalAwarded)}
+          </span>
+        )}
+      </div>
+    </Row>
+  )
+}
diff --git a/web/pages/[username]/[contractSlug].tsx b/web/pages/[username]/[contractSlug].tsx
index 70026e5e..da66fc8a 100644
--- a/web/pages/[username]/[contractSlug].tsx
+++ b/web/pages/[username]/[contractSlug].tsx
@@ -1,4 +1,4 @@
-import React, { memo, useEffect, useMemo, useState } from 'react'
+import React, { memo, useEffect, useMemo, useRef, useState } from 'react'
 import { ArrowLeftIcon } from '@heroicons/react/outline'
 import dayjs from 'dayjs'
 
@@ -46,6 +46,8 @@ import { BetsSummary } from 'web/components/bet-summary'
 import { listAllComments } from 'web/lib/firebase/comments'
 import { ContractComment } from 'common/comment'
 import { ScrollToTopButton } from 'web/components/scroll-to-top-button'
+import { Answer } from 'common/answer'
+import { useEvent } from 'web/hooks/use-event'
 
 export const getStaticProps = fromPropz(getStaticPropz)
 export async function getStaticPropz(props: {
@@ -204,6 +206,20 @@ export function ContractPageContent(
     contractId: contract.id,
   })
 
+  const [answerResponse, setAnswerResponse] = useState<Answer | undefined>(
+    undefined
+  )
+  const tabsContainerRef = useRef<null | HTMLDivElement>(null)
+  const onAnswerCommentClick = useEvent((answer: Answer) => {
+    setAnswerResponse(answer)
+    if (tabsContainerRef.current) {
+      tabsContainerRef.current.scrollIntoView({ behavior: 'smooth' })
+    } else {
+      console.error('no ref to scroll to')
+    }
+  })
+  const onCancelAnswerResponse = useEvent(() => setAnswerResponse(undefined))
+
   return (
     <Page
       rightSidebar={
@@ -257,7 +273,10 @@ export function ContractPageContent(
           outcomeType === 'MULTIPLE_CHOICE') && (
           <>
             <Spacer h={4} />
-            <AnswersPanel contract={contract} />
+            <AnswersPanel
+              contract={contract}
+              onAnswerCommentClick={onAnswerCommentClick}
+            />
             <Spacer h={4} />
           </>
         )}
@@ -286,12 +305,16 @@ export function ContractPageContent(
           userBets={userBets}
         />
 
-        <ContractTabs
-          contract={contract}
-          bets={bets}
-          userBets={userBets}
-          comments={comments}
-        />
+        <div ref={tabsContainerRef}>
+          <ContractTabs
+            contract={contract}
+            bets={bets}
+            userBets={userBets}
+            comments={comments}
+            answerResponse={answerResponse}
+            onCancelAnswerResponse={onCancelAnswerResponse}
+          />
+        </div>
       </Col>
       {!isCreator && <RecommendedContractsWidget contract={contract} />}
       <ScrollToTopButton className="fixed bottom-16 right-2 z-20 lg:bottom-2 xl:hidden" />
diff --git a/web/public/custom-components/curve.tsx b/web/public/custom-components/curve.tsx
new file mode 100644
index 00000000..5a7b3437
--- /dev/null
+++ b/web/public/custom-components/curve.tsx
@@ -0,0 +1,19 @@
+export default function Curve({
+  size = 24,
+  color = '#B1B1C7',
+  strokeWidth = 2,
+}) {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      viewBox="0 0 18 18"
+      width={size}
+      height={size}
+      fill="none"
+      stroke={color}
+      strokeWidth={strokeWidth}
+    >
+      <path d="M5.02,0V5.24c0,4.3,3.49,7.79,7.79,7.79h5.2" />
+    </svg>
+  )
+}