150 lines
3.9 KiB
TypeScript
150 lines
3.9 KiB
TypeScript
import dayjs from 'dayjs'
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import {
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getFirestore,
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doc,
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setDoc,
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deleteDoc,
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where,
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collection,
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query,
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getDocs,
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onSnapshot,
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orderBy,
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getDoc,
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updateDoc,
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limit,
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} from 'firebase/firestore'
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import { app } from './init'
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import { getValues, listenForValues } from './utils'
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import { Contract } from '../../../common/contract'
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import { getProbability } from '../../../common/calculate'
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export type { Contract }
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export function contractPath(contract: Contract) {
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// For now, derive username from creatorName
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return `/${contract.creatorUsername}/${contract.slug}`
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}
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export function contractMetrics(contract: Contract) {
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const {
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pool,
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phantomShares,
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totalShares,
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createdTime,
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resolutionTime,
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isResolved,
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} = contract
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const truePool = pool.YES + pool.NO
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const prob = getProbability(totalShares)
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const probPercent = Math.round(prob * 100) + '%'
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const startProb = getProbability(phantomShares)
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const createdDate = dayjs(createdTime).format('MMM D')
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const resolvedDate = isResolved
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? dayjs(resolutionTime).format('MMM D')
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: undefined
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return { truePool, probPercent, startProb, createdDate, resolvedDate }
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}
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const db = getFirestore(app)
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const contractCollection = collection(db, 'contracts')
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// Push contract to Firestore
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export async function setContract(contract: Contract) {
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const docRef = doc(db, 'contracts', contract.id)
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await setDoc(docRef, contract)
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}
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export async function updateContract(
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contractId: string,
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update: Partial<Contract>
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) {
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const docRef = doc(db, 'contracts', contractId)
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await updateDoc(docRef, update)
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}
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export async function pushNewContract(contract: Omit<Contract, 'id'>) {
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const newContractRef = doc(contractCollection)
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const fullContract: Contract = { ...contract, id: newContractRef.id }
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await setDoc(newContractRef, fullContract)
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return fullContract
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}
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export async function getContractFromId(contractId: string) {
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const docRef = doc(db, 'contracts', contractId)
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const result = await getDoc(docRef)
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return result.exists() ? (result.data() as Contract) : undefined
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}
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export async function getContractFromSlug(slug: string) {
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const q = query(contractCollection, where('slug', '==', slug))
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const snapshot = await getDocs(q)
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return snapshot.empty ? undefined : (snapshot.docs[0].data() as Contract)
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}
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export async function deleteContract(contractId: string) {
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const docRef = doc(db, 'contracts', contractId)
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await deleteDoc(docRef)
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}
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export async function listContracts(creatorId: string): Promise<Contract[]> {
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const q = query(
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contractCollection,
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where('creatorId', '==', creatorId),
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orderBy('createdTime', 'desc')
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)
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const snapshot = await getDocs(q)
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return snapshot.docs.map((doc) => doc.data() as Contract)
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}
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export async function listAllContracts(): Promise<Contract[]> {
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const q = query(contractCollection, orderBy('createdTime', 'desc'))
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const snapshot = await getDocs(q)
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return snapshot.docs.map((doc) => doc.data() as Contract)
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}
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export function listenForContracts(
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setContracts: (contracts: Contract[]) => void
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) {
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const q = query(contractCollection, orderBy('createdTime', 'desc'))
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return onSnapshot(q, (snap) => {
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setContracts(snap.docs.map((doc) => doc.data() as Contract))
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})
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}
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export function listenForContract(
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contractId: string,
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setContract: (contract: Contract | null) => void
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) {
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const contractRef = doc(contractCollection, contractId)
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return onSnapshot(contractRef, (contractSnap) => {
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setContract((contractSnap.data() ?? null) as Contract | null)
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})
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}
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const hotContractsQuery = query(
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contractCollection,
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where('isResolved', '==', false),
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where('visibility', '==', 'public'),
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orderBy('volume24Hours', 'desc'),
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limit(4)
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)
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export function listenForHotContracts(
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setHotContracts: (contracts: Contract[]) => void
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) {
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return listenForValues<Contract>(hotContractsQuery, setHotContracts)
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}
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export function getHotContracts() {
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return getValues<Contract>(hotContractsQuery)
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}
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