152 lines
4.8 KiB
TypeScript
152 lines
4.8 KiB
TypeScript
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import { AnchorProvider, Wallet } from '@coral-xyz/anchor';
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import { Cluster, Connection, Keypair, PublicKey } from '@solana/web3.js';
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import fs from 'fs';
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import { TokenIndex } from '../src/accounts/bank';
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import { MangoClient } from '../src/client';
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import { MANGO_V4_ID } from '../src/constants';
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import {
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fetchJupiterTransaction,
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fetchRoutes,
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prepareMangoRouterInstructions,
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} from '../src/router';
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import { toNative, toUiDecimals } from '../src/utils';
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const CLUSTER: Cluster =
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(process.env.CLUSTER_OVERRIDE as Cluster) || 'mainnet-beta';
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const CLUSTER_URL =
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process.env.CLUSTER_URL_OVERRIDE || process.env.MB_CLUSTER_URL;
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const USER_KEYPAIR =
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process.env.USER_KEYPAIR_OVERRIDE || process.env.MB_PAYER_KEYPAIR;
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const MANGO_ACCOUNT_PK = process.env.MANGO_ACCOUNT_PK;
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const TOKEN_INDEX = Number(process.env.TOKEN_INDEX) as TokenIndex;
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const MAX_LIAB_TRANSFER = Number(process.env.MAX_LIAB_TRANSFER);
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async function forceCloseTokenBorrows(): Promise<void> {
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const options = AnchorProvider.defaultOptions();
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const connection = new Connection(CLUSTER_URL!, options);
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const user = Keypair.fromSecretKey(
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Buffer.from(
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JSON.parse(
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process.env.KEYPAIR || fs.readFileSync(USER_KEYPAIR!, 'utf-8'),
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),
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),
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);
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const userWallet = new Wallet(user);
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const userProvider = new AnchorProvider(connection, userWallet, options);
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const client = await MangoClient.connect(
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userProvider,
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CLUSTER,
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MANGO_V4_ID[CLUSTER],
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{
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idsSource: 'get-program-accounts',
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},
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);
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let liqor = await client.getMangoAccount(new PublicKey(MANGO_ACCOUNT_PK!));
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const group = await client.getGroup(liqor.group);
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const forceCloseTokenBank = group.getFirstBankByTokenIndex(TOKEN_INDEX);
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if (forceCloseTokenBank.reduceOnly != 2) {
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throw new Error(
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`Unexpected reduce only state ${forceCloseTokenBank.reduceOnly}`,
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);
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}
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if (!forceCloseTokenBank.forceClose) {
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throw new Error(
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`Unexpected force close state ${forceCloseTokenBank.forceClose}`,
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);
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}
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const usdcBank = group.getFirstBankByTokenIndex(0 as TokenIndex);
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// Get all mango accounts with borrows for given token
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const mangoAccountsWithBorrows = (
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await client.getAllMangoAccounts(group)
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).filter((a) => a.getTokenBalanceUi(forceCloseTokenBank) < 0);
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console.log(`${liqor.toString(group, true)}`);
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for (const liqee of mangoAccountsWithBorrows) {
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liqor = await liqor.reload(client);
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// Liqor can only liquidate borrow using deposits, since borrows are in reduce only
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// Swap usdc worth token borrow (sub existing position), account for slippage using liquidation fee
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// MAX_LIAB_TRANSFER guards against trying to swap to a very large amount
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const amount =
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Math.min(
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liqee.getTokenBorrowsUi(forceCloseTokenBank) -
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liqor.getTokenBalanceUi(forceCloseTokenBank),
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MAX_LIAB_TRANSFER,
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) *
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forceCloseTokenBank.uiPrice *
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(1 + forceCloseTokenBank.liquidationFee.toNumber());
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console.log(
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`liqor balance ${liqor.getTokenBalanceUi(
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forceCloseTokenBank,
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)}, liqee balance ${liqee.getTokenBalanceUi(
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forceCloseTokenBank,
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)}, liqor will swap further amount of $${toUiDecimals(
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amount,
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usdcBank.mintDecimals,
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)} to ${forceCloseTokenBank.name}`,
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);
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const amountBn = toNative(
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Math.min(amount, 99999999999), // Jupiter API can't handle amounts larger than 99999999999
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usdcBank.mintDecimals,
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);
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const { bestRoute } = await fetchRoutes(
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usdcBank.mint,
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forceCloseTokenBank.mint,
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amountBn.toString(),
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forceCloseTokenBank.liquidationFee.toNumber() * 100,
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'ExactIn',
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'0',
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liqor.owner,
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);
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if (!bestRoute) {
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await new Promise((r) => setTimeout(r, 500));
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continue;
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}
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const [ixs, alts] =
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bestRoute.routerName === 'Mango'
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? await prepareMangoRouterInstructions(
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bestRoute,
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usdcBank.mint,
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forceCloseTokenBank.mint,
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user.publicKey,
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)
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: await fetchJupiterTransaction(
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client.connection,
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bestRoute,
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user.publicKey,
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0,
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usdcBank.mint,
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forceCloseTokenBank.mint,
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);
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const sig = await client.marginTrade({
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group: group,
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mangoAccount: liqor,
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inputMintPk: usdcBank.mint,
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amountIn: amount,
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outputMintPk: forceCloseTokenBank.mint,
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userDefinedInstructions: ixs,
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userDefinedAlts: alts,
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flashLoanType: { swap: {} },
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});
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console.log(
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` - marginTrade, sig https://explorer.solana.com/tx/${sig}?cluster=${
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CLUSTER == 'devnet' ? 'devnet' : ''
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}`,
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);
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await client.tokenForceCloseBorrowsWithToken(
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group,
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liqor,
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liqee,
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usdcBank.tokenIndex,
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forceCloseTokenBank.tokenIndex,
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);
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}
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}
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forceCloseTokenBorrows();
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