@chorus-one/ethereum/dist/mjs/lib/utils/getBaseData.js

All-in-one toolkit for building staking dApps on Ethereum network

import Decimal from 'decimal.js';
import { PriceOracleAbi } from '../contracts/priceOracleAbi';
export const getBaseData = async (connector, vaultAddress) => {
    const publicClient = connector.eth;
    const mintTokenRatePromise = publicClient.readContract({
        abi: PriceOracleAbi,
        functionName: 'latestAnswer',
        address: connector.priceOracle
    });
    const osTokenConfigPromise = connector.graphqlRequest({
        type: 'graph',
        op: 'Vault',
        query: `
    query Vault($address: ID!) {
      vault(id: $address) {
        osTokenConfig {
          ltvPercent
          liqThresholdPercent
        }
      }
    }
  `,
        variables: {
            address: vaultAddress
        }
    });
    const [mintTokenRate, osTokenConfig] = await Promise.all([mintTokenRatePromise, osTokenConfigPromise]);
    // ETH per osETH exchange rate
    const rate = new Decimal(mintTokenRate.toString()).div(1_000_000_000_000_000_000).toString();
    return {
        rate,
        ltvPercent: BigInt(osTokenConfig.data.vault.osTokenConfig.ltvPercent),
        thresholdPercent: BigInt(osTokenConfig.data.vault.osTokenConfig.liqThresholdPercent) // minting threshold, max 90%
    };
};