How to implement burn-redeem where redeem token is 1 of multiple options?

Product Questions & Discussion
1

I’m looking to have this interaction:

User burns 1 token (1155), receives 1 token (1155) from 4 possible options (randomized)

Thinking this could be possible, potentially using an onBurn callback?

interface IERC1155CreatorExtensionBurnable is IERC165 {
    /**
     * @dev callback handler for burn events
     */
    function onBurn(address owner, uint256[] calldata tokenIds, uint256[] calldata amounts) external;
}

Would love to know if I’m headed down the right path and if you have any tips, thanks!

2

Hey doing something similar. Did you ever find out if this works? I’m trying this myself - it appears that the onBurn hook is getting called, but the mintExtensionExisting function that I have in the onBurn callback isn’t getting called.

3

Update: You can’t do this because of reentrancy to original core contract:(