metaforecast/src/polymarket-fetch.js

131 lines
4.1 KiB
JavaScript

/* Imports */
import fs from 'fs'
import axios from "axios"
import {getstars} from "./stars.js"
/* Definitions */
let graphQLendpoint = "https://subgraph-matic.poly.market/subgraphs/name/TokenUnion/polymarket"//"https://subgraph-backup.poly.market/subgraphs/name/TokenUnion/polymarket"//'https://subgraph-matic.poly.market/subgraphs/name/TokenUnion/polymarket3'
let units = 10**6
/* Support functions
async function fetchAllContractInfo(){ // for info which the polymarket graphql API
let data = fs.readFileSync("./data/polymarket-contract-list.json")
let response = JSON.parse(data)
return response
}
*/
async function fetchAllContractInfo(){ // for info which the polymarket graphql API
let response = await axios.get('https://strapi-matic.poly.market/markets?active=true&_sort=volume:desc')
.then(query => query.data);
response = response.filter(res => res.closed != true)
return response
}
async function fetchAllContractData(){
let daysSinceEra = Math.round(Date.now()/(1000*24*60*60))-2
let response = await axios({
url: graphQLendpoint,
method: 'POST',
headers: ({ 'Content-Type': 'application/json' }),
data: JSON.stringify(({ query: `
{
fixedProductMarketMakers(first: 300
where: {
lastActiveDay_gt: ${daysSinceEra}
}){
id
creator
creationTimestamp
fee
tradesQuantity
buysQuantity
sellsQuantity
lastActiveDay
outcomeTokenPrices
outcomeTokenAmounts
liquidityParameter
collateralBuyVolume
collateralSellVolume
conditions {
outcomeSlotCount
}
}
}
`
})),
})
.then(res => res.data)
.then(res => res.data.fixedProductMarketMakers)
//console.log(response)
return response
}
async function fetch_all(){
let allData = await fetchAllContractData()
let allInfo = await fetchAllContractInfo()
let combinedObj = ({})
for(let info of allInfo){
let address = info.marketMakerAddress
let addressLowerCase = address.toLowerCase()
//delete info.history
if(info.outcomes[0]!="Long" || info.outcomes[1]!="Short")
combinedObj[addressLowerCase] = {
title: info.question,
url: "https://polymarket.com/market/" + info.slug,
address: address,
description: info.description,
outcomes: info.outcomes,
options: []
}
}
for(let data of allData){
let addressLowerCase = data.id
console.log(data)
if(combinedObj[addressLowerCase] != undefined){
//console.log(addressLowerCase)
let obj = combinedObj[addressLowerCase]
let numforecasts = data.tradesQuantity
let isbinary = Number(data.conditions[0].outcomeSlotCount) == 2
let tradevolume = (Number(data.collateralBuyVolume) + Number(data.collateralSellVolume))/units
let liquidity = Number(data.liquidityParameter)/units
let percentage = Number(data.outcomeTokenPrices[0])*100
let percentageFormatted = isbinary?(percentage.toFixed(0) + "%"):"none"
let options = []
for(let outcome in data.outcomeTokenPrices){
options.push({
"name": obj.outcomes[outcome],
"probability": data.outcomeTokenPrices[outcome],
"type": "PROBABILITY"
})
}
combinedObj[addressLowerCase] = {
"title": obj.title,
"url": obj.url,
"platform": "PolyMarket",
"description": obj.description,
"options": options,
"numforecasts": Number(data.tradesQuantity).toFixed(0),
"stars": getstars(2)
/*liquidity: liquidity.toFixed(2),
tradevolume: tradevolume.toFixed(2),
address: obj.address*/
}
}
}
let result = Object.values(combinedObj)
//console.log(result)
return result
}
/* Body */
export async function polymarket(){
let result = await fetch_all()
console.log(result)
//console.log(result)
let string = JSON.stringify(result,null, 2)
fs.writeFileSync('./data/polymarket-questions.json', string);
console.log("Done")
}