67 lines
1.6 KiB
TypeScript
67 lines
1.6 KiB
TypeScript
import { useState, useEffect } from 'react'
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import { PrivateUser, User } from 'common/user'
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import {
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getUser,
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listenForAllUsers,
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listenForPrivateUsers,
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} from 'web/lib/firebase/users'
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import { groupBy, sortBy, difference } from 'lodash'
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import { getContractsOfUserBets } from 'web/lib/firebase/bets'
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import { useFollows } from './use-follows'
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export const useUsers = () => {
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const [users, setUsers] = useState<User[]>([])
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useEffect(() => {
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listenForAllUsers(setUsers)
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}, [])
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return users
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}
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export const useUserById = (userId?: string) => {
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const [user, setUser] = useState<User | undefined>(undefined)
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useEffect(() => {
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if (userId) {
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getUser(userId).then(setUser)
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}
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}, [userId])
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return user
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}
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export const usePrivateUsers = () => {
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const [users, setUsers] = useState<PrivateUser[]>([])
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useEffect(() => {
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listenForPrivateUsers(setUsers)
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}, [])
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return users
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}
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export const useDiscoverUsers = (userId: string | null | undefined) => {
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const [discoverUserIds, setDiscoverUserIds] = useState<string[]>([])
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useEffect(() => {
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if (userId)
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getContractsOfUserBets(userId).then((contracts) => {
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const creatorCounts = Object.entries(
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groupBy(contracts, 'creatorId')
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).map(([id, contracts]) => [id, contracts.length] as const)
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const topCreatorIds = sortBy(creatorCounts, ([_, i]) => i)
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.map(([id]) => id)
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.reverse()
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setDiscoverUserIds(topCreatorIds)
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})
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}, [userId])
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const followedUserIds = useFollows(userId)
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const nonSuggestions = [userId ?? '', ...(followedUserIds ?? [])]
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return difference(discoverUserIds, nonSuggestions).slice(0, 50)
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}
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