From 3b6ba76db65f15cf8a5d3b794c116f4f18cbe73e Mon Sep 17 00:00:00 2001
From: Ben Congdon <ben@congdon.dev>
Date: Sun, 26 Jun 2022 17:00:02 -0700
Subject: [PATCH] Add market liquidity addition events to bets feed (#578)

* Add liquidity events to bets feed

* Use larger avatar for liquidity feed items
---
 web/components/contract/contract-tabs.tsx |  7 +-
 web/components/feed/activity-items.ts     | 30 +++++++-
 web/components/feed/contract-activity.tsx |  6 +-
 web/components/feed/feed-items.tsx        |  3 +
 web/components/feed/feed-liquidity.tsx    | 85 +++++++++++++++++++++++
 web/pages/[username]/[contractSlug].tsx   |  4 ++
 6 files changed, 132 insertions(+), 3 deletions(-)
 create mode 100644 web/components/feed/feed-liquidity.tsx

diff --git a/web/components/contract/contract-tabs.tsx b/web/components/contract/contract-tabs.tsx
index cb4a3537..e68e59b9 100644
--- a/web/components/contract/contract-tabs.tsx
+++ b/web/components/contract/contract-tabs.tsx
@@ -8,15 +8,17 @@ import { Spacer } from '../layout/spacer'
 import { Tabs } from '../layout/tabs'
 import { Col } from '../layout/col'
 import { CommentTipMap } from 'web/hooks/use-tip-txns'
+import { LiquidityProvision } from 'common/liquidity-provision'
 
 export function ContractTabs(props: {
   contract: Contract
   user: User | null | undefined
   bets: Bet[]
+  liquidityProvisions: LiquidityProvision[]
   comments: Comment[]
   tips: CommentTipMap
 }) {
-  const { contract, user, bets, comments, tips } = props
+  const { contract, user, bets, comments, tips, liquidityProvisions } = props
   const { outcomeType } = contract
 
   const userBets = user && bets.filter((bet) => bet.userId === user.id)
@@ -25,6 +27,7 @@ export function ContractTabs(props: {
     <ContractActivity
       contract={contract}
       bets={bets}
+      liquidityProvisions={liquidityProvisions}
       comments={comments}
       tips={tips}
       user={user}
@@ -38,6 +41,7 @@ export function ContractTabs(props: {
       <ContractActivity
         contract={contract}
         bets={bets}
+        liquidityProvisions={liquidityProvisions}
         comments={comments}
         tips={tips}
         user={user}
@@ -55,6 +59,7 @@ export function ContractTabs(props: {
           <ContractActivity
             contract={contract}
             bets={bets}
+            liquidityProvisions={liquidityProvisions}
             comments={comments}
             tips={tips}
             user={user}
diff --git a/web/components/feed/activity-items.ts b/web/components/feed/activity-items.ts
index 346314a3..68dfcb2d 100644
--- a/web/components/feed/activity-items.ts
+++ b/web/components/feed/activity-items.ts
@@ -7,6 +7,7 @@ import { Comment } from 'common/comment'
 import { Contract, FreeResponseContract } from 'common/contract'
 import { User } from 'common/user'
 import { CommentTipMap } from 'web/hooks/use-tip-txns'
+import { LiquidityProvision } from 'common/liquidity-provision'
 
 export type ActivityItem =
   | DescriptionItem
@@ -17,6 +18,7 @@ export type ActivityItem =
   | ResolveItem
   | CommentInputItem
   | CommentThreadItem
+  | LiquidityItem
 
 type BaseActivityItem = {
   id: string
@@ -72,6 +74,14 @@ export type ResolveItem = BaseActivityItem & {
   type: 'resolve'
 }
 
+export type LiquidityItem = BaseActivityItem & {
+  type: 'liquidity'
+  liquidity: LiquidityProvision
+  hideOutcome: boolean
+  smallAvatar: boolean
+  hideComment?: boolean
+}
+
 function getAnswerAndCommentInputGroups(
   contract: FreeResponseContract,
   bets: Bet[],
@@ -139,6 +149,7 @@ export function getSpecificContractActivityItems(
   contract: Contract,
   bets: Bet[],
   comments: Comment[],
+  liquidityProvisions: LiquidityProvision[],
   tips: CommentTipMap,
   user: User | null | undefined,
   options: {
@@ -146,7 +157,7 @@ export function getSpecificContractActivityItems(
   }
 ) {
   const { mode } = options
-  const items = [] as ActivityItem[]
+  let items = [] as ActivityItem[]
 
   switch (mode) {
     case 'bets':
@@ -163,6 +174,23 @@ export function getSpecificContractActivityItems(
           hideComment: true,
         }))
       )
+      items.push(
+        ...liquidityProvisions.map((liquidity) => ({
+          type: 'liquidity' as const,
+          id: liquidity.id,
+          contract,
+          liquidity,
+          hideOutcome: false,
+          smallAvatar: false,
+        }))
+      )
+      items = sortBy(items, (item) =>
+        item.type === 'bet'
+          ? item.bet.createdTime
+          : item.type === 'liquidity'
+          ? item.liquidity.createdTime
+          : undefined
+      )
       break
 
     case 'comments': {
diff --git a/web/components/feed/contract-activity.tsx b/web/components/feed/contract-activity.tsx
index 9ffc8717..8f728d39 100644
--- a/web/components/feed/contract-activity.tsx
+++ b/web/components/feed/contract-activity.tsx
@@ -8,11 +8,13 @@ import { FeedItems } from './feed-items'
 import { User } from 'common/user'
 import { useContractWithPreload } from 'web/hooks/use-contract'
 import { CommentTipMap } from 'web/hooks/use-tip-txns'
+import { LiquidityProvision } from 'common/liquidity-provision'
 
 export function ContractActivity(props: {
   contract: Contract
   bets: Bet[]
   comments: Comment[]
+  liquidityProvisions: LiquidityProvision[]
   tips: CommentTipMap
   user: User | null | undefined
   mode: 'comments' | 'bets' | 'free-response-comment-answer-groups'
@@ -20,7 +22,8 @@ export function ContractActivity(props: {
   className?: string
   betRowClassName?: string
 }) {
-  const { user, mode, tips, className, betRowClassName } = props
+  const { user, mode, tips, className, betRowClassName, liquidityProvisions } =
+    props
 
   const contract = useContractWithPreload(props.contract) ?? props.contract
 
@@ -33,6 +36,7 @@ export function ContractActivity(props: {
     contract,
     bets,
     comments,
+    liquidityProvisions,
     tips,
     user,
     { mode }
diff --git a/web/components/feed/feed-items.tsx b/web/components/feed/feed-items.tsx
index ef0d133b..312190e4 100644
--- a/web/components/feed/feed-items.tsx
+++ b/web/components/feed/feed-items.tsx
@@ -35,6 +35,7 @@ import {
 } from 'web/components/feed/feed-comments'
 import { FeedBet } from 'web/components/feed/feed-bets'
 import { NumericContract } from 'common/contract'
+import { FeedLiquidity } from './feed-liquidity'
 
 export function FeedItems(props: {
   contract: Contract
@@ -83,6 +84,8 @@ export function FeedItem(props: { item: ActivityItem }) {
       return <FeedDescription {...item} />
     case 'bet':
       return <FeedBet {...item} />
+    case 'liquidity':
+      return <FeedLiquidity {...item} />
     case 'answergroup':
       return <FeedAnswerCommentGroup {...item} />
     case 'close':
diff --git a/web/components/feed/feed-liquidity.tsx b/web/components/feed/feed-liquidity.tsx
new file mode 100644
index 00000000..cfce3861
--- /dev/null
+++ b/web/components/feed/feed-liquidity.tsx
@@ -0,0 +1,85 @@
+import dayjs from 'dayjs'
+import { User } from 'common/user'
+import { useUser, useUserById } from 'web/hooks/use-user'
+import { Row } from 'web/components/layout/row'
+import { Avatar, EmptyAvatar } from 'web/components/avatar'
+import clsx from 'clsx'
+import { formatMoney } from 'common/util/format'
+import { RelativeTimestamp } from 'web/components/relative-timestamp'
+import React from 'react'
+import { UserLink } from '../user-page'
+import { LiquidityProvision } from 'common/liquidity-provision'
+
+export function FeedLiquidity(props: {
+  liquidity: LiquidityProvision
+  smallAvatar: boolean
+}) {
+  const { liquidity, smallAvatar } = props
+  const { userId, createdTime } = liquidity
+
+  const isBeforeJune2022 = dayjs(createdTime).isBefore('2022-06-01')
+  // eslint-disable-next-line react-hooks/rules-of-hooks
+  const bettor = isBeforeJune2022 ? undefined : useUserById(userId)
+
+  const user = useUser()
+  const isSelf = user?.id === userId
+
+  return (
+    <>
+      <Row className={'flex w-full gap-2 pt-3'}>
+        {isSelf ? (
+          <Avatar
+            className={clsx(smallAvatar && 'ml-1')}
+            size={smallAvatar ? 'sm' : undefined}
+            avatarUrl={user.avatarUrl}
+            username={user.username}
+          />
+        ) : bettor ? (
+          <Avatar
+            className={clsx(smallAvatar && 'ml-1')}
+            size={smallAvatar ? 'sm' : undefined}
+            avatarUrl={bettor.avatarUrl}
+            username={bettor.username}
+          />
+        ) : (
+          <div className="relative px-1">
+            <EmptyAvatar />
+          </div>
+        )}
+        <div className={'min-w-0 flex-1 py-1.5'}>
+          <LiquidityStatusText
+            liquidity={liquidity}
+            isSelf={isSelf}
+            bettor={bettor}
+          />
+        </div>
+      </Row>
+    </>
+  )
+}
+
+export function LiquidityStatusText(props: {
+  liquidity: LiquidityProvision
+  isSelf: boolean
+  bettor?: User
+}) {
+  const { liquidity, bettor, isSelf } = props
+  const { amount, createdTime } = liquidity
+
+  // TODO: Withdrawn liquidity will never be shown, since liquidity amounts currently are zeroed out upon withdrawal.
+  const bought = amount >= 0 ? 'added' : 'withdrew'
+  const money = formatMoney(Math.abs(amount))
+
+  return (
+    <div className="text-sm text-gray-500">
+      {bettor ? (
+        <UserLink name={bettor.name} username={bettor.username} />
+      ) : (
+        <span>{isSelf ? 'You' : 'A trader'}</span>
+      )}{' '}
+      {bought} {money}
+      {' of liquidity'}
+      <RelativeTimestamp time={createdTime} />
+    </div>
+  )
+}
diff --git a/web/pages/[username]/[contractSlug].tsx b/web/pages/[username]/[contractSlug].tsx
index 099ba57e..24982b4f 100644
--- a/web/pages/[username]/[contractSlug].tsx
+++ b/web/pages/[username]/[contractSlug].tsx
@@ -42,6 +42,7 @@ import { useBets } from 'web/hooks/use-bets'
 import { AlertBox } from 'web/components/alert-box'
 import { useTracking } from 'web/hooks/use-tracking'
 import { CommentTipMap, useTipTxns } from 'web/hooks/use-tip-txns'
+import { useLiquidity } from 'web/hooks/use-liquidity'
 
 export const getStaticProps = fromPropz(getStaticPropz)
 export async function getStaticPropz(props: {
@@ -117,6 +118,8 @@ export function ContractPageContent(
   })
 
   const bets = useBets(contract.id) ?? props.bets
+  const liquidityProvisions =
+    useLiquidity(contract.id)?.filter((l) => !l.isAnte && l.amount > 0) ?? []
   // Sort for now to see if bug is fixed.
   comments.sort((c1, c2) => c1.createdTime - c2.createdTime)
 
@@ -233,6 +236,7 @@ export function ContractPageContent(
         <ContractTabs
           contract={contract}
           user={user}
+          liquidityProvisions={liquidityProvisions}
           bets={bets}
           tips={tips}
           comments={comments}