fetch-saber-emissions-per-day.ts

import fetch from 'cross-fetch';

import { PublicKey, Connection, Keypair, Transaction } from '@solana/web3.js';
import * as anchor from '@project-serum/anchor';
import { QuarrySDK } from '@quarryprotocol/quarry-sdk';
import { SolanaProvider } from "@saberhq/solana-contrib";
import { Token } from '@saberhq/token-utils';

export default class Wallet {
	constructor(readonly payer: Keypair) {}
	async signTransaction(tx: Transaction): Promise<Transaction> {
		tx.partialSign(this.payer);
		return tx;
	}
	async signAllTransactions(txs: Transaction[]): Promise<Transaction[]> {
		return txs.map((t) => {
			t.partialSign(this.payer);
			return t;
		});
	}
	get publicKey(): PublicKey {
		return this.payer.publicKey;
	}
}

export const makeSDK = (): QuarrySDK => {
	const options = anchor.Provider.defaultOptions();
	const connection = new Connection('https://solana-api.projectserum.com', options.commitment);
	const wallet = new Wallet(Keypair.generate());
	const anchorProvider = new anchor.Provider(connection, wallet, options);
	anchor.setProvider(anchorProvider);
	
	const provider = SolanaProvider.load({
		connection: anchorProvider.connection,
		sendConnection: anchorProvider.connection,
		wallet: anchorProvider.wallet,
		opts: anchorProvider.opts,
	});
	return QuarrySDK.load({
		provider,
	});
};

(async () => {
	const sdk = makeSDK();
	const mine = sdk.mine;
	const rewarderKey = new PublicKey('rXhAofQCT7NN9TUqigyEAUzV1uLL4boeD8CRkNBSkYk');
	const rewarderWrapper = await mine.loadRewarderWrapper(rewarderKey);
	const tokenInfo = await (await fetch('https://raw.githubusercontent.com/saber-hq/saber-lp-token-list/master/lists/saber-lp.mainnet-beta.json')).json();
	for(const token of tokenInfo.tokens) {
		try {
			const stakeToken = new Token(token);
			const quarryWrapper = await rewarderWrapper.getQuarry(stakeToken);
			const annualRewardsRate = Number.parseFloat(quarryWrapper.quarryData.annualRewardsRate.toString()) * 1e-6;
			const dailyRewardsRate = annualRewardsRate / 365;
			console.log(token.symbol, `${dailyRewardsRate.toFixed(0)} SBR/day`);
		} catch(e) {
			console.error(`E: Failed to fetch for ${token.symbol}`, (e as Error).toString());
		}
	}
})();