Flash loan arbitrage

1

Goal

Borrow from Aave, arbitrage price difference, repay in the same transaction, keep profit.

2

Steps (conceptual)

1. Initiate flash loan from Aave to UPM

2. Swap WBTC → 0xBTC on ORBT (assume price 1.01)

3. Swap 0xBTC → WBTC on external DEX (assume price 1.00)

4. Repay flash loan + fee (Aave pulls repayment)

5. Keep profit

Concept:

function flashArbitrage(uint256 amount) external {
    address[] memory targets = new address[](5);
    bytes[] memory datas = new bytes[](5);

    // Step 1: Initiate flash loan
    targets[0] = address(aave);
    datas[0] = abi.encodeWithSelector(
        Aave.flashLoan.selector,
        address(upm),
        address(WBTC),
        amount,
        // ... flash loan params
    );

    // Steps 2-4 are executed within the flash loan callback
    upm.doBatchCalls(targets, datas);
}