fbonds-core/lib/fbond-protocol/solendFlashLoanUtils/main.js

Banx protocol sdk

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.flashRepayReserveLiquidityInstruction = exports.SOLEND_PRODUCTION_PROGRAM_ID = exports.flashBorrowReserveLiquidityInstruction = void 0;
const anchor_1 = require("@coral-xyz/anchor");
const spl_token_1 = require("@solana/spl-token");
const BufferLayout = __importStar(require("buffer-layout"));
var LendingInstruction;
(function (LendingInstruction) {
    LendingInstruction[LendingInstruction["InitLendingMarket"] = 0] = "InitLendingMarket";
    LendingInstruction[LendingInstruction["SetLendingMarketOwner"] = 1] = "SetLendingMarketOwner";
    LendingInstruction[LendingInstruction["InitReserve"] = 2] = "InitReserve";
    LendingInstruction[LendingInstruction["RefreshReserve"] = 3] = "RefreshReserve";
    LendingInstruction[LendingInstruction["DepositReserveLiquidity"] = 4] = "DepositReserveLiquidity";
    LendingInstruction[LendingInstruction["RedeemReserveCollateral"] = 5] = "RedeemReserveCollateral";
    LendingInstruction[LendingInstruction["InitObligation"] = 6] = "InitObligation";
    LendingInstruction[LendingInstruction["RefreshObligation"] = 7] = "RefreshObligation";
    LendingInstruction[LendingInstruction["DepositObligationCollateral"] = 8] = "DepositObligationCollateral";
    LendingInstruction[LendingInstruction["WithdrawObligationCollateral"] = 9] = "WithdrawObligationCollateral";
    LendingInstruction[LendingInstruction["BorrowObligationLiquidity"] = 10] = "BorrowObligationLiquidity";
    LendingInstruction[LendingInstruction["RepayObligationLiquidity"] = 11] = "RepayObligationLiquidity";
    LendingInstruction[LendingInstruction["LiquidateObligation"] = 12] = "LiquidateObligation";
    LendingInstruction[LendingInstruction["FlashLoan"] = 13] = "FlashLoan";
    LendingInstruction[LendingInstruction["DepositReserveLiquidityAndObligationCollateral"] = 14] = "DepositReserveLiquidityAndObligationCollateral";
    LendingInstruction[LendingInstruction["WithdrawObligationCollateralAndRedeemReserveLiquidity"] = 15] = "WithdrawObligationCollateralAndRedeemReserveLiquidity";
    LendingInstruction[LendingInstruction["UpdateReserveConfig"] = 16] = "UpdateReserveConfig";
    LendingInstruction[LendingInstruction["FlashBorrowReserveLiquidity"] = 19] = "FlashBorrowReserveLiquidity";
    LendingInstruction[LendingInstruction["FlashRepayReserveLiquidity"] = 20] = "FlashRepayReserveLiquidity";
})(LendingInstruction || (LendingInstruction = {}));
/**
 * Layout for a 64bit unsigned value
 */
const uint64 = (property = "uint64") => {
    const layout = BufferLayout.blob(8, property);
    const _decode = layout.decode.bind(layout);
    const _encode = layout.encode.bind(layout);
    layout.decode = (buffer, offset) => {
        const data = _decode(buffer, offset);
        return new anchor_1.BN([...data]
            .reverse()
            .map((i) => `00${i.toString(16)}`.slice(-2))
            .join(""), 16);
    };
    layout.encode = (num, buffer, offset) => {
        const a = num.toArray().reverse();
        let b = Buffer.from(a);
        if (b.length !== 8) {
            const zeroPad = Buffer.alloc(8);
            b.copy(zeroPad);
            b = zeroPad;
        }
        return _encode(b, buffer, offset);
    };
    return layout;
};
const flashBorrowReserveLiquidityInstruction = (liquidityAmount, sourceLiquidity, destinationLiquidity, reserve, lendingMarket) => {
    const dataLayout = BufferLayout.struct([
        BufferLayout.u8("instruction"),
        uint64("liquidityAmount"),
    ]);
    const data = Buffer.alloc(dataLayout.span);
    dataLayout.encode({
        instruction: LendingInstruction.FlashBorrowReserveLiquidity,
        liquidityAmount: new anchor_1.BN(liquidityAmount),
    }, data);
    const [lendingMarketAuthority, _] = anchor_1.web3.PublicKey.findProgramAddressSync([lendingMarket.toBytes()], exports.SOLEND_PRODUCTION_PROGRAM_ID);
    const keys = [
        { pubkey: sourceLiquidity, isSigner: false, isWritable: true },
        { pubkey: destinationLiquidity, isSigner: false, isWritable: true },
        { pubkey: reserve, isSigner: false, isWritable: true },
        { pubkey: lendingMarket, isSigner: false, isWritable: false },
        { pubkey: lendingMarketAuthority, isSigner: false, isWritable: false },
        { pubkey: anchor_1.web3.SYSVAR_INSTRUCTIONS_PUBKEY, isSigner: false, isWritable: false },
        { pubkey: spl_token_1.TOKEN_PROGRAM_ID, isSigner: false, isWritable: false },
    ];
    return new anchor_1.web3.TransactionInstruction({
        keys,
        programId: exports.SOLEND_PRODUCTION_PROGRAM_ID,
        data,
    });
};
exports.flashBorrowReserveLiquidityInstruction = flashBorrowReserveLiquidityInstruction;
exports.SOLEND_PRODUCTION_PROGRAM_ID = new anchor_1.web3.PublicKey("So1endDq2YkqhipRh3WViPa8hdiSpxWy6z3Z6tMCpAo");
const flashRepayReserveLiquidityInstruction = (liquidityAmount, borrowInstructionIndex, sourceLiquidity, destinationLiquidity, reserveLiquidityFeeReceiver, hostFeeReceiver, reserve, lendingMarket, userTransferAuthority) => {
    const dataLayout = BufferLayout.struct([
        BufferLayout.u8("instruction"),
        uint64("liquidityAmount"),
        BufferLayout.u8("borrowInstructionIndex"),
    ]);
    const data = Buffer.alloc(dataLayout.span);
    dataLayout.encode({
        instruction: LendingInstruction.FlashRepayReserveLiquidity,
        liquidityAmount: new anchor_1.BN(liquidityAmount),
        borrowInstructionIndex: borrowInstructionIndex,
    }, data);
    const keys = [
        { pubkey: sourceLiquidity, isSigner: false, isWritable: true },
        { pubkey: destinationLiquidity, isSigner: false, isWritable: true },
        { pubkey: reserveLiquidityFeeReceiver, isSigner: false, isWritable: true },
        { pubkey: hostFeeReceiver, isSigner: false, isWritable: true },
        { pubkey: reserve, isSigner: false, isWritable: false },
        { pubkey: lendingMarket, isSigner: false, isWritable: false },
        { pubkey: userTransferAuthority, isSigner: true, isWritable: false },
        { pubkey: anchor_1.web3.SYSVAR_INSTRUCTIONS_PUBKEY, isSigner: false, isWritable: false },
        { pubkey: spl_token_1.TOKEN_PROGRAM_ID, isSigner: false, isWritable: false },
    ];
    return new anchor_1.web3.TransactionInstruction({
        keys,
        programId: exports.SOLEND_PRODUCTION_PROGRAM_ID,
        data,
    });
};
exports.flashRepayReserveLiquidityInstruction = flashRepayReserveLiquidityInstruction;