111 lines
3.2 KiB
TypeScript
111 lines
3.2 KiB
TypeScript
import _ from 'lodash'
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import { useRef } from 'react'
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import { Fold } from '../../common/fold'
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import { User } from '../../common/user'
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import { filterDefined } from '../../common/util/array'
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import { Bet, getRecentBets } from '../lib/firebase/bets'
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import { Comment, getRecentComments } from '../lib/firebase/comments'
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import { Contract, listAllContracts } from '../lib/firebase/contracts'
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import { listAllFolds } from '../lib/firebase/folds'
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import { findActiveContracts } from '../pages/activity'
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import { useRecentBets } from './use-bets'
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import { useRecentComments } from './use-comments'
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import { useContracts } from './use-contracts'
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import { useFollowedFolds } from './use-fold'
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import { useUserBetContracts } from './use-user-bets'
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// used in static props
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export const getAllContractInfo = async () => {
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let [contracts, folds] = await Promise.all([
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listAllContracts().catch((_) => []),
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listAllFolds().catch(() => []),
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])
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const [recentBets, recentComments] = await Promise.all([
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getRecentBets(),
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getRecentComments(),
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])
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return { contracts, recentBets, recentComments, folds }
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}
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export const useActiveContracts = (
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props: {
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contracts: Contract[]
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folds: Fold[]
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recentBets: Bet[]
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recentComments: Comment[]
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},
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user: User | undefined | null
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) => {
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const contracts = useContracts() ?? props.contracts
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const recentBets = useRecentBets() ?? props.recentBets
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const recentComments = useRecentComments() ?? props.recentComments
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const followedFoldIds = useFollowedFolds(user)
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const followedFolds = filterDefined(
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(followedFoldIds ?? []).map((id) =>
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props.folds.find((fold) => fold.id === id)
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)
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)
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// Save the initial followed fold slugs.
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const followedFoldSlugsRef = useRef<string[] | undefined>()
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if (followedFoldIds && !followedFoldSlugsRef.current)
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followedFoldSlugsRef.current = followedFolds.map((f) => f.slug)
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const initialFollowedFoldSlugs = followedFoldSlugsRef.current
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const tagSet = new Set(
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_.flatten(followedFolds.map((fold) => fold.lowercaseTags))
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)
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const yourBetContractIds = useUserBetContracts(user?.id)
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const yourBetContracts = yourBetContractIds
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? new Set(yourBetContractIds)
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: undefined
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// Show no contracts before your info is loaded.
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let feedContracts: Contract[] = []
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if (yourBetContracts && followedFoldIds) {
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// Show all contracts if no folds are followed.
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if (followedFoldIds.length === 0) feedContracts = contracts
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else
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feedContracts = contracts.filter(
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(contract) =>
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contract.lowercaseTags.some((tag) => tagSet.has(tag)) ||
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yourBetContracts.has(contract.id)
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)
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}
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const activeContracts = findActiveContracts(
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feedContracts,
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recentComments,
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recentBets,
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365
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)
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const betsByContract = _.groupBy(recentBets, (bet) => bet.contractId)
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const activeBets = activeContracts.map(
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(contract) => betsByContract[contract.id] ?? []
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)
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const commentsByContract = _.groupBy(
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recentComments,
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(comment) => comment.contractId
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)
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const activeComments = activeContracts.map(
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(contract) => commentsByContract[contract.id] ?? []
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)
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return {
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activeContracts,
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activeBets,
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activeComments,
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initialFollowedFoldSlugs,
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}
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}
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