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import fetch from 'node-fetch';
import { promises as asyncfs } from 'fs';
import { HttpService } from '@nestjs/axios';
import fs from 'fs';
import fiatSymbols from './fiat-symobols.json';
import { ethers } from 'ethers';
import { catchError, defaultIfEmpty, EMPTY, firstValueFrom, map, Observable, of, switchMap, tap, timer } from 'rxjs';
import currency from 'currency.js';
import dotenv from 'dotenv';
dotenv.config();
import { config } from './config';
import TwitterClient from './clients/twitter';
import { EUploadMimeType } from 'twitter-api-v2';
import DiscordClient from './clients/discord';
import { createLogger } from './logging.utils';
import { HexColorString, MessageAttachment, MessageEmbed } from 'discord.js';
import { REST } from '@discordjs/rest';
import { Routes } from 'discord-api-types/v10';
import { formatDistance } from 'date-fns';
export const alchemyAPIUrl = 'https://eth-mainnet.alchemyapi.io/v2/';
export const alchemyAPIKey = process.env.ALCHEMY_API_KEY;
//const provider = ethers.getDefaultProvider(alchemyAPIUrl + alchemyAPIKey);
const provider = global.providerForceHTTPS ?
ethers.getDefaultProvider(process.env.GETH_NODE_ENDPOINT_HTTP) :
ethers.getDefaultProvider(process.env.GETH_NODE_ENDPOINT);
const pendingTransactions = []
const MAX_PENDING_TRANSACTIONS = 20000
const logger = createLogger('base.service')
let pendingTransactionWatcherStarted = false
let fiatValues = {}
getCryptoToFiat()
async function getCryptoToFiat() {
logger.info('refreshing fiat values')
const endpoint = `https://api.coingecko.com/api/v3/simple/price?ids=ethereum,dai,usdc&vs_currencies=usd`;
const res = await fetch(endpoint)
const data = await res.json() as any
fiatValues = { 'usdc': { 'usd': 1 }, ...data }
logger.info(`fiat values set to ${JSON.stringify(fiatValues)}`)
setTimeout(() => getCryptoToFiat(), 300000)
}
Iif (!global.noWatchdog && !global.doNotStartAutomatically) {
startWatchdog()
}
Iif (config.enable_flashbot_detection && !global.doNotStartAutomatically) {
watchPendingTransactions()
}
function startWatchdog() {
return setTimeout(async () => {
const timeoutInterval = setTimeout(() => {
logger.warn(`Websocket connection hanged! Killing myself.`)
process.exit(1)
}, 20000);
logger.info(`Checking websocket connection...`)
const block = await provider.getBlockNumber()
logger.info(`Websocket connection alive: ${block} !`)
clearInterval(timeoutInterval)
startWatchdog()
}, 30000)
}
function watchPendingTransactions() {
Iif (!pendingTransactionWatcherStarted) {
pendingTransactionWatcherStarted = true
provider.on('pending', (txHash) => {
pendingTransactions.push({
time: new Date().getTime(),
hash: txHash
})
});
setInterval(() => {
Iif (pendingTransactions.length) {
Iif (pendingTransactions.length > MAX_PENDING_TRANSACTIONS) {
pendingTransactions.splice(0, pendingTransactions.length - MAX_PENDING_TRANSACTIONS)
}
const distanceFrom = formatDistance(pendingTransactions[0].time, new Date(), { addSuffix: true })
const distanceTo = formatDistance(pendingTransactions[pendingTransactions.length-1].time, new Date(), { addSuffix: true })
logger.info(`Analyzed ${pendingTransactions.length} pending transactions between ${distanceFrom} and ${distanceTo}...`)
Iif (new Date().getTime() - pendingTransactions[pendingTransactions.length-1].time > 60000*5) {
logger.info(`Last pending transaction is older than 5 minutes, killing myself...`)
process.exit(1)
}
}
}, 5000)
}
}
export interface TweetRequest {
platform: string,
logIndex: number,
eventType: string,
initialFrom:string,
initialTo?:string,
from: any;
to?: any;
tokenId: string;
ether?: number;
erc20Token: string;
transactionHash: string;
transactionDate: string;
alternateValue: number;
imageUrl?: string;
additionalText?: string;
}
@Injectable()
export class BaseService {
twitterClient: TwitterClient;
discordClient: DiscordClient;
constructor(
protected readonly http: HttpService
) {
this.twitterClient = new TwitterClient()
this.discordClient = new DiscordClient()
}
isTransactionFlashbotted(hash:string) {
Iif (pendingTransactions.length < MAX_PENDING_TRANSACTIONS) {
logger.warn(`cannot determinate if the transaction used a flashbot because the pool is not full: ${pendingTransactions.length}`)
return false
}
for (let tx of pendingTransactions) {
Iif (tx.hash.toLowerCase() == hash.toLowerCase()) {
return false
}
}
return true
}
initDiscordClient() {
this.discordClient.init()
}
getDiscordInteractionsListeners() {
return this.discordClient.getInteractionsListener()
}
getDiscordCommands() {
return this.discordClient.getDiscordCommands()
}
getWeb3Provider() {
return provider
}
shortenAddress(address: string): string {
const shortAddress = `${address.slice(0, 5)}...${address.slice(address.length - 5, address.length)}`;
if (address.startsWith('0x')) return shortAddress;
return address;
}
async getTokenMetadata(tokenId: string, onlyImage:boolean=true): Promise<any> {
// check cache
const metadataPath = `${config.token_metadata_cache_path}/${tokenId}.json`
const url = alchemyAPIUrl + alchemyAPIKey + '/getNFTMetadata';
const hadCacheData = fs.existsSync(metadataPath)
let dataObserver = hadCacheData ?
of({
data: JSON.parse(fs.readFileSync(metadataPath).toString())
}) :
this.http.get(url, {
params: {
contractAddress: config.contract_address,
tokenId,
tokenType: 'erc721'
}
})
return await firstValueFrom(
dataObserver.pipe(
tap(async (res:any) => {
Iif (!hadCacheData && config.token_metadata_cache_path) {
logger.info(`populating metadata cache for ${tokenId}`)
await asyncfs.writeFile(metadataPath, JSON.stringify(res?.data))
}
}),
map((res: any) => {
return onlyImage ? res?.data?.metadata?.image_url || res?.data?.metadata?.image || res?.data?.tokenUri?.gateway : res?.data;
}),
catchError(() => {
return of(null);
})
)
);
}
async dispatch(data: TweetRequest) {
const tweet = await this.tweet(data)
await this.discord(data, tweet.id)
}
async discord(data: TweetRequest,
tweetId:string|undefined=undefined,
template:string=config.saleMessageDiscord,
color:string='#0084CA',
footerTextParam:string|undefined=undefined) {
Iif (!this.discordClient.setup) return
Iif (tweetId) template = template.replace(new RegExp('<tweetLink>', 'g'), `<https://twitter.com/i/web/status/${tweetId}>`);
const image = config.use_local_images ? data.imageUrl : this.transformImage(data.imageUrl);
const platformImage = data.platform === 'nftx' ? 'NFTX.png' :
data.platform === 'opensea' ? 'OPENSEA.png' :
data.platform === 'looksrare' ? 'LOOKSRARE.png' :
data.platform === 'x2y2' ? 'X2Y2.png' :
data.platform === 'rarible' ? 'RARIBLE.png' :
data.platform === 'notlarvalabs' ? 'NLL.png' :
data.platform === 'phunkauction' ? 'AUCTION.png' :
data.platform === 'phunkflywheel' ? 'FLYWHEEL.png' :
data.platform === 'blurio' ? 'BLUR.png' :
'ETHERSCAN.png';
const sentText = this.formatText(data, template)
const footerText = footerTextParam ?? config.discord_footer_text
const embed = new MessageEmbed()
.setColor(color as HexColorString)
.setImage(`attachment://token.png`)
.setDescription(sentText)
.setTimestamp()
.setFooter({ text: footerText, iconURL: 'attachment://platform.png' });
let processedImage: Buffer | undefined;
Iif (image) processedImage = await this.getImageFile(image);
processedImage = await this.decorateImage(processedImage, data)
await this.discordClient.sendEmbed(embed, processedImage, `platform_images/${platformImage}`);
}
async tweet(data: TweetRequest, template:string=config.saleMessage) {
let tweetText = this.formatText(data, template)
// Delay tweets when running live
Iif (!global.doNotStartAutomatically)
await new Promise( resolve => setTimeout(resolve, 30000) );
// Format our image to base64
const image = config.use_local_images || config.use_forced_remote_image_path ? data.imageUrl : this.transformImage(data.imageUrl);
let processedImage: Buffer | undefined;
Iif (image) processedImage = await this.getImageFile(image);
processedImage = await this.decorateImage(processedImage, data)
let media_id: string;
Iif (processedImage) {
// Upload the item's image to Twitter & retrieve a reference to it
media_id = await this.twitterClient.uploadMedia(processedImage, {
mimeType: EUploadMimeType.Png,
});
}
// Post the tweet 👇
// If you need access to this endpoint, you’ll need to apply for Elevated access via the Developer Portal. You can learn more here: https://developer.twitter.com/en/docs/twitter-api/getting-started/about-twitter-api#v2-access-leve
const { data: createdTweet, errors: errors } = await this.twitterClient.tweet(
tweetText,
{ media: { media_ids: [media_id] } },
);
if (!errors) {
logger.info(
`Successfully tweeted: ${createdTweet.id} -> ${createdTweet.text}`,
);
return createdTweet;
} else {
logger.error(errors);
return null;
}
}
async decorateImage(processedImage: Buffer, data:TweetRequest): Promise<Buffer> {
// Do nothing but can be overriden by subclasses
return processedImage
}
formatText(data: TweetRequest, template:string) {
Iif (!data) return template
// Cash value
const value = data.alternateValue && data.alternateValue > 0 ? data.alternateValue : data.ether
const fiat = this.getFiatValue(value, data.erc20Token)
const eth = this.getERC20Value(data.alternateValue ? data.alternateValue : data.ether, data.erc20Token)
// Replace tokens from config file
template = template.replace(new RegExp('<tokenId>', 'g'), data.tokenId);
template = template.replace(new RegExp('<ethPrice>', 'g'), eth.format());
template = template.replace(new RegExp('<txHash>', 'g'), data.transactionHash);
template = template.replace(new RegExp('<from>', 'g'), data.from);
template = template.replace(new RegExp('<initialFrom>', 'g'), data.initialFrom);
template = template.replace(new RegExp('<to>', 'g'), data.to);
template = template.replace(new RegExp('<initialTo>', 'g'), data.initialTo);
template = template.replace(new RegExp('<fiatPrice>', 'g'), fiat ? fiat.format() : '-');
const platform = data.platform === 'blurio' ? 'Blur marketplace' :
data.platform === 'opensea' ? 'OpenSea marketplace' :
data.platform === 'looksrare' ? 'Looks Rare' :
data.platform === 'arcadexyz' ? 'Arcade' :
data.platform === 'nftfi' ? 'NFTfi' :
data.platform === 'benddao' ? 'Bend DAO' :
data.platform === 'metastreet' ? 'Metastreet' :
data.platform === 'punksmarketplace' ? 'CryptoPunks marketplace' :
data.platform
template = template.replace(new RegExp('<platform>', 'g'), platform);
template = template.replace(new RegExp('<additionalText>', 'g'), data.additionalText);
Iif (config.enable_flashbot_detection && data.eventType !== 'loans')
template += ` — Flashbots Protect RPC: ${this.isTransactionFlashbotted(data.transactionHash) ? 'Yes' : 'No'}`
return template
}
getERC20Value(value: number, erc20Token: string, forcedSymbol:string|undefined=undefined) {
const symbol = forcedSymbol !== undefined ? forcedSymbol
: erc20Token === 'dai' ? 'DAI'
: erc20Token === 'usdc' ? 'USDC' : 'Ξ'
const precision = erc20Token === 'dai' ? 0 : erc20Token === 'usdc' ? 2 : 3
const pattern = erc20Token === 'dai' ? '# !' : erc20Token === 'usdc' ? '# !' : '!#'
const eth = currency(value, { symbol, precision, pattern });
return eth
}
getFiatValue(value: number, erc20Token: string) {
try {
const fiatValue = fiatValues && Object.values(fiatValues).length ?
fiatValues[erc20Token][config.currency] * value :
undefined;
return fiatValue != null ? currency(fiatValue, { symbol: fiatSymbols[config.currency].symbol, precision: 0 }) : undefined
} catch (err) {
logger.error(`cannot get fiat for ${erc20Token}`)
}
return undefined
}
async getImageFile(url: string): Promise<Buffer | undefined> {
return new Promise((resolve, _) => {
if (url.startsWith('http')) {
this.http.get(url, { responseType: 'arraybuffer' }).subscribe((res) => {
if (res.data) {
const file = Buffer.from(res.data, 'binary');
resolve(file);
} else {
resolve(undefined);
}
});
} else {
resolve(fs.readFileSync(url));
}
});
}
getCryptoToFiat(): Observable<any> {
const endpoint = `https://api.coingecko.com/api/v3/simple/price`;
const params = {
ids: 'ethereum,dai,usdc',
vs_currencies: 'usd'
};
return timer(0, 300000).pipe(
switchMap(() => this.http.get(endpoint, {params})),
map((res: any) => res.data),
// tap((res) => console.log(res)),
catchError((err: any) => {
logger.warn('coin gecko call failed, ignoring fiat price', err.toString());
return of(undefined);
})
);
}
transformImage(value: string): string {
//return value.replace('https://gateway.pinata.cloud/ipfs/QmSv6qnW1zCqiYBHCJKbfBu8YAcJefUYtPsDea3TsG2PHz/notpunk', 'file://./token_images/phunk');
let val: any = value;
if (value?.includes('gateway.pinata.cloud')) {
val = value.replace('gateway.pinata.cloud', 'cloudflare-ipfs.com');
// } else if (value?.startsWith('data:image')) {
// val = `${value}`;
} else Iif (value?.startsWith('ipfs://')) {
val = value.replace('ipfs://', 'https://cloudflare-ipfs.com/ipfs/');
}
return val ? val : null;
}
async updatePosition(position) {
await asyncfs.writeFile(this.getPositionFile(), `${position}`)
}
getPositionFile():string {
throw new Error('must be overriden')
}
}
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