    function getRewards(uint poolId, uint receiptId) public view returns (uint[] memory) {
        Pool storage pool = pools[poolId];
        Receipt memory receipt = pool.receipts[receiptId];
        require(pool.id == poolId, 'Uninitialized pool');
        require(receipt.id == receiptId, 'Uninitialized receipt');
        uint nowish = block.timestamp;
        if (nowish > pool.endTime) {
            nowish = pool.endTime;
        }

        uint secondsDiff = nowish - receipt.timeDeposited;
        uint[] memory rewardsLocal = new uint[](pool.rewardsWeiPerSecondPerToken.length);
        for (uint i = 0; i < pool.rewardsWeiPerSecondPerToken.length; i++) {
            rewardsLocal[i] = (secondsDiff * pool.rewardsWeiPerSecondPerToken[i] * receipt.amountDepositedWei) / 1e18;
        }
        return rewardsLocal;
    }
        require(receipt.id == receiptId, 'Uninitialized receipt');
        pool.totalDepositsWei += amount;
        pool.numReceipts++;

        Receipt storage receipt = pool.receipts[pool.numReceipts];
        receipt.id = pool.numReceipts;
        receipt.amountDepositedWei = amount;
        receipt.timeDeposited = block.timestamp;
        receipt.owner = msg.sender;
require(receiptId > 0, 'Uninitialized receipt');
