Groups contracts (#709)

* Update group links in trigger and api

* Remove extra call during creation

* Remove grouplinks on frontend

* Deserialize

* Consolidate logic

* Move function locally

functions/src/create-contract.ts

@@ -14,7 +14,7 @@ import {
 import { slugify } from '../../common/util/slugify'
 import { randomString } from '../../common/util/random'
 
-import { chargeUser } from './utils'
+import { chargeUser, getContract } from './utils'
 import { APIError, newEndpoint, validate, zTimestamp } from './api'
 
 import {
@@ -28,11 +28,11 @@ import { Answer, getNoneAnswer } from '../../common/answer'
 import { getNewContract } from '../../common/new-contract'
 import { NUMERIC_BUCKET_COUNT } from '../../common/numeric-constants'
 import { User } from '../../common/user'
-import { Group, MAX_ID_LENGTH } from '../../common/group'
+import { Group, GroupLink, MAX_ID_LENGTH } from '../../common/group'
 import { getPseudoProbability } from '../../common/pseudo-numeric'
 import { JSONContent } from '@tiptap/core'
-import { zip } from 'lodash'
-import { Bet } from 'common/bet'
+import { uniq, zip } from 'lodash'
+import { Bet } from '../../common/bet'
 
 const descScehma: z.ZodType<JSONContent> = z.lazy(() =>
   z.intersection(
@@ -136,27 +136,6 @@ export const createmarket = newEndpoint({}, async (req, auth) => {
   const slug = await getSlug(question)
   const contractRef = firestore.collection('contracts').doc()
 
-  let group = null
-  if (groupId) {
-    const groupDocRef = firestore.collection('groups').doc(groupId)
-    const groupDoc = await groupDocRef.get()
-    if (!groupDoc.exists) {
-      throw new APIError(400, 'No group exists with the given group ID.')
-    }
-
-    group = groupDoc.data() as Group
-    if (!group.memberIds.includes(user.id)) {
-      throw new APIError(
-        400,
-        'User must be a member of the group to add markets to it.'
-      )
-    }
-    if (!group.contractIds.includes(contractRef.id))
-      await groupDocRef.update({
-        contractIds: [...group.contractIds, contractRef.id],
-      })
-  }
-
   console.log(
     'creating contract for',
     user.username,
@@ -188,6 +167,33 @@ export const createmarket = newEndpoint({}, async (req, auth) => {
 
   await contractRef.create(contract)
 
+  let group = null
+  if (groupId) {
+    const groupDocRef = firestore.collection('groups').doc(groupId)
+    const groupDoc = await groupDocRef.get()
+    if (!groupDoc.exists) {
+      throw new APIError(400, 'No group exists with the given group ID.')
+    }
+
+    group = groupDoc.data() as Group
+    if (
+      !group.memberIds.includes(user.id) &&
+      !group.anyoneCanJoin &&
+      group.creatorId !== user.id
+    ) {
+      throw new APIError(
+        400,
+        'User must be a member/creator of the group or group must be open to add markets to it.'
+      )
+    }
+    if (!group.contractIds.includes(contractRef.id)) {
+      await createGroupLinks(group, [contractRef.id], auth.uid)
+      await groupDocRef.update({
+        contractIds: uniq([...group.contractIds, contractRef.id]),
+      })
+    }
+  }
+
   const providerId = user.id
 
   if (outcomeType === 'BINARY' || outcomeType === 'PSEUDO_NUMERIC') {
@@ -284,3 +290,38 @@ export async function getContractFromSlug(slug: string) {
 
   return snap.empty ? undefined : (snap.docs[0].data() as Contract)
 }
+
+async function createGroupLinks(
+  group: Group,
+  contractIds: string[],
+  userId: string
+) {
+  for (const contractId of contractIds) {
+    const contract = await getContract(contractId)
+    if (!contract?.groupSlugs?.includes(group.slug)) {
+      await firestore
+        .collection('contracts')
+        .doc(contractId)
+        .update({
+          groupSlugs: uniq([group.slug, ...(contract?.groupSlugs ?? [])]),
+        })
+    }
+    if (!contract?.groupLinks?.map((gl) => gl.groupId).includes(group.id)) {
+      await firestore
+        .collection('contracts')
+        .doc(contractId)
+        .update({
+          groupLinks: [
+            {
+              groupId: group.id,
+              name: group.name,
+              slug: group.slug,
+              userId,
+              createdTime: Date.now(),
+            } as GroupLink,
+            ...(contract?.groupLinks ?? []),
+          ],
+        })
+    }
+  }
+}

functions/src/on-update-group.ts

@@ -1,6 +1,8 @@
 import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
 import { Group } from '../../common/group'
+import { getContract } from './utils'
+import { uniq } from 'lodash'
 const firestore = admin.firestore()
 
 export const onUpdateGroup = functions.firestore
@@ -9,7 +11,7 @@ export const onUpdateGroup = functions.firestore
     const prevGroup = change.before.data() as Group
     const group = change.after.data() as Group
 
-    // ignore the update we just made
+    // Ignore the activity update we just made
     if (prevGroup.mostRecentActivityTime !== group.mostRecentActivityTime)
       return
 
@@ -27,3 +29,23 @@ export const onUpdateGroup = functions.firestore
       .doc(group.id)
       .update({ mostRecentActivityTime: Date.now() })
   })
+
+export async function removeGroupLinks(group: Group, contractIds: string[]) {
+  for (const contractId of contractIds) {
+    const contract = await getContract(contractId)
+    await firestore
+      .collection('contracts')
+      .doc(contractId)
+      .update({
+        groupSlugs: uniq([
+          ...(contract?.groupSlugs?.filter((slug) => slug !== group.slug) ??
+            []),
+        ]),
+        groupLinks: [
+          ...(contract?.groupLinks?.filter(
+            (link) => link.groupId !== group.id
+          ) ?? []),
+        ],
+      })
+  }
+}

web/components/groups/contract-groups-list.tsx

@@ -7,6 +7,7 @@ import { Button } from 'web/components/button'
 import { GroupSelector } from 'web/components/groups/group-selector'
 import {
   addContractToGroup,
+  canModifyGroupContracts,
   removeContractFromGroup,
 } from 'web/lib/firebase/groups'
 import { User } from 'common/user'
@@ -57,11 +58,11 @@ export function ContractGroupsList(props: {
           <Row className="line-clamp-1 items-center gap-2">
             <GroupLinkItem group={group} />
           </Row>
-          {user && group.memberIds.includes(user.id) && (
+          {user && canModifyGroupContracts(group, user.id) && (
             <Button
               color={'gray-white'}
               size={'xs'}
-              onClick={() => removeContractFromGroup(group, contract)}
+              onClick={() => removeContractFromGroup(group, contract, user.id)}
             >
               <XIcon className="h-4 w-4 text-gray-500" />
             </Button>

web/components/groups/group-selector.tsx

@@ -9,7 +9,7 @@ import {
 import clsx from 'clsx'
 import { CreateGroupButton } from 'web/components/groups/create-group-button'
 import { useState } from 'react'
-import { useMemberGroups } from 'web/hooks/use-group'
+import { useMemberGroups, useOpenGroups } from 'web/hooks/use-group'
 import { User } from 'common/user'
 import { searchInAny } from 'common/util/parse'
 
@@ -27,10 +27,15 @@ export function GroupSelector(props: {
   const [isCreatingNewGroup, setIsCreatingNewGroup] = useState(false)
   const { showSelector, showLabel, ignoreGroupIds } = options
   const [query, setQuery] = useState('')
-  const memberGroups = (useMemberGroups(creator?.id) ?? []).filter(
-    (group) => !ignoreGroupIds?.includes(group.id)
-  )
-  const filteredGroups = memberGroups.filter((group) =>
+  const openGroups = useOpenGroups()
+  const availableGroups = openGroups
+    .concat(
+      (useMemberGroups(creator?.id) ?? []).filter(
+        (g) => !openGroups.map((og) => og.id).includes(g.id)
+      )
+    )
+    .filter((group) => !ignoreGroupIds?.includes(group.id))
+  const filteredGroups = availableGroups.filter((group) =>
     searchInAny(query, group.name)
   )
 

web/hooks/use-group.ts

@@ -5,6 +5,7 @@ import {
   listenForGroup,
   listenForGroups,
   listenForMemberGroups,
+  listenForOpenGroups,
   listGroups,
 } from 'web/lib/firebase/groups'
 import { getUser, getUsers } from 'web/lib/firebase/users'
@@ -32,6 +33,16 @@ export const useGroups = () => {
   return groups
 }
 
+export const useOpenGroups = () => {
+  const [groups, setGroups] = useState<Group[]>([])
+
+  useEffect(() => {
+    return listenForOpenGroups(setGroups)
+  }, [])
+
+  return groups
+}
+
 export const useMemberGroups = (
   userId: string | null | undefined,
   options?: { withChatEnabled: boolean },

web/lib/firebase/groups.ts

@@ -8,7 +8,6 @@ import {
 } from 'firebase/firestore'
 import { sortBy, uniq } from 'lodash'
 import { Group, GROUP_CHAT_SLUG, GroupLink } from 'common/group'
-import { updateContract } from './contracts'
 import {
   coll,
   getValue,
@@ -17,6 +16,7 @@ import {
   listenForValues,
 } from './utils'
 import { Contract } from 'common/contract'
+import { updateContract } from 'web/lib/firebase/contracts'
 
 export const groups = coll<Group>('groups')
 
@@ -52,6 +52,13 @@ export function listenForGroups(setGroups: (groups: Group[]) => void) {
   return listenForValues(groups, setGroups)
 }
 
+export function listenForOpenGroups(setGroups: (groups: Group[]) => void) {
+  return listenForValues(
+    query(groups, where('anyoneCanJoin', '==', true)),
+    setGroups
+  )
+}
+
 export function getGroup(groupId: string) {
   return getValue<Group>(doc(groups, groupId))
 }
@@ -129,23 +136,23 @@ export async function addContractToGroup(
   contract: Contract,
   userId: string
 ) {
-  if (!contract.groupLinks?.map((l) => l.groupId).includes(group.id)) {
-    const newGroupLinks = [
-      ...(contract.groupLinks ?? []),
-      {
-        groupId: group.id,
-        createdTime: Date.now(),
-        slug: group.slug,
-        userId,
-        name: group.name,
-      } as GroupLink,
-    ]
+  if (!canModifyGroupContracts(group, userId)) return
+  const newGroupLinks = [
+    ...(contract.groupLinks ?? []),
+    {
+      groupId: group.id,
+      createdTime: Date.now(),
+      slug: group.slug,
+      userId,
+      name: group.name,
+    } as GroupLink,
+  ]
+  // It's good to update the contract first, so the on-update-group trigger doesn't re-add them
+  await updateContract(contract.id, {
+    groupSlugs: uniq([...(contract.groupSlugs ?? []), group.slug]),
+    groupLinks: newGroupLinks,
+  })
 
-    await updateContract(contract.id, {
-      groupSlugs: uniq([...(contract.groupSlugs ?? []), group.slug]),
-      groupLinks: newGroupLinks,
-    })
-  }
   if (!group.contractIds.includes(contract.id)) {
     return await updateGroup(group, {
       contractIds: uniq([...group.contractIds, contract.id]),
@@ -160,8 +167,11 @@ export async function addContractToGroup(
 
 export async function removeContractFromGroup(
   group: Group,
-  contract: Contract
+  contract: Contract,
+  userId: string
 ) {
+  if (!canModifyGroupContracts(group, userId)) return
+
   if (contract.groupLinks?.map((l) => l.groupId).includes(group.id)) {
     const newGroupLinks = contract.groupLinks?.filter(
       (link) => link.slug !== group.slug
@@ -186,29 +196,10 @@ export async function removeContractFromGroup(
   }
 }
 
-export async function setContractGroupLinks(
-  group: Group,
-  contractId: string,
-  userId: string
-) {
-  await updateContract(contractId, {
-    groupSlugs: [group.slug],
-    groupLinks: [
-      {
-        groupId: group.id,
-        name: group.name,
-        slug: group.slug,
-        userId,
-        createdTime: Date.now(),
-      } as GroupLink,
-    ],
-  })
-  return await updateGroup(group, {
-    contractIds: uniq([...group.contractIds, contractId]),
-  })
-    .then(() => group)
-    .catch((err) => {
-      console.error('error adding contract to group', err)
-      return err
-    })
+export function canModifyGroupContracts(group: Group, userId: string) {
+  return (
+    group.creatorId === userId ||
+    group.memberIds.includes(userId) ||
+    group.anyoneCanJoin
+  )
 }

web/pages/create.tsx

@@ -19,7 +19,7 @@ import {
 import { formatMoney } from 'common/util/format'
 import { removeUndefinedProps } from 'common/util/object'
 import { ChoicesToggleGroup } from 'web/components/choices-toggle-group'
-import { getGroup, setContractGroupLinks } from 'web/lib/firebase/groups'
+import { canModifyGroupContracts, getGroup } from 'web/lib/firebase/groups'
 import { Group } from 'common/group'
 import { useTracking } from 'web/hooks/use-tracking'
 import { useWarnUnsavedChanges } from 'web/hooks/use-warn-unsaved-changes'
@@ -122,7 +122,7 @@ export function NewContract(props: {
   useEffect(() => {
     if (groupId && creator)
       getGroup(groupId).then((group) => {
-        if (group && group.memberIds.includes(creator.id)) {
+        if (group && canModifyGroupContracts(group, creator.id)) {
           setSelectedGroup(group)
           setShowGroupSelector(false)
         }
@@ -239,10 +239,6 @@ export function NewContract(props: {
         selectedGroup: selectedGroup?.id,
         isFree: false,
       })
-      if (result && selectedGroup) {
-        await setContractGroupLinks(selectedGroup, result.id, creator.id)
-      }
-
       await router.push(contractPath(result as Contract))
     } catch (e) {
       console.error('error creating contract', e, (e as any).details)