# Contest Details ### Prize Pool - High - 100xp - Medium - 20xp - Low - 2xp - Starts: November 30, 2023 Noon UTC - Ends: December 07, 2023 Noon UTC ## Stats - nSLOC: 116 - Complexity Score: 83 - [About](#about) - [SantasList](#santaslist) - [List Checking](#list-checking) - [Collecting Presents](#collecting-presents) - [SantaToken](#santatoken) - [TokenUri.sol](#tokenurisol) # About Santa has adopted blockchain technology to keep track of the naughty and nice! Hooray! So Santa hired some south pole contract elves to help build him a blockchain-based list. He'd never worked with blockchain elves before but was excited to see what they could do! They got nearly 100% test coverage, so that's got to be good, right? The codebase is broken up into 3 contracts: - `SantasList.sol` - `SantaToken.sol` - `TokenUri.sol` ## SantasList Santa's List is the main contract that stores the list of naughty and nice people. It doubles as an NFT contract that people can collect if they are `NICE` or `EXTRA_NICE`. In order for someone to be considered `NICE` or `EXTRA_NICE` they *must* be first "checked twice" by Santa. Once they are checked twice, `NICE` users can collect their NFT, and `EXTRA_NICE` users can collect their NFT **and** they are given `SantaToken`s. The `SantaToken` is an ERC20 that can be used to buy the NFT for their `NAUGHTY` or `UNKNOWN` friends. ### List Checking In this contract **Only Santa** to take the following actions: - `checkList`: A function that changes an `address` to a new `Status` of `NICE`, `EXTRA_NICE`, `NAUGHTY`, or `UNKNOWN` on the *original* `s_theListCheckedOnce` list. - `checkTwice`: A function that changes an `address` to a new `Status` of `NICE`, `EXTRA_NICE`, `NAUGHTY`, or `UNKNOWN` on the *new* `s_theListCheckedTwice` list **only** if someone has already been marked on the `s_theListCheckedOnce`. ### Collecting Presents *You can see what a Christmas NFT present looks like here!* The following functions are meant to be called by people, but only those marked `NICE` or `EXTRA_NICE` can benefit from them. - `collectNFT`: A function that allows a `NICE` or `EXTRA_NICE` user to collect their NFT. `EXTRA_NICE` users also receive `SantaToken` which is used to purchase an additional NFTs. An address is only allowed to collect 1 NFT per address, there is a check in the codebase to prevent someone from minting duplicate NFTs. - `buyPresent`: A function that trades `2e18` of `SantaToken` for an NFT. This function can be called by anyone. ## SantaToken This codebase is based off [solmate](https://github.com/transmissions11/solmate) a Modern, opinionated, and gas optimized building blocks for smart contract development. The ERC20 is a typical ERC20 with the following changes: - Only `SantasList` can mint tokens - Only `SantasList` can burn tokens (well, technically anyone can, but only `SantasList` can call the burn function) ## TokenUri.sol A minimal contract that exclusively has the tokenURI. It's a separate contract inherited by `SantasList` for readability purposes. # Getting Started ## Requirements - [git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git) - You'll know you did it right if you can run `git --version` and you see a response like `git version x.x.x` - [foundry](https://getfoundry.sh/) - You'll know you did it right if you can run `forge --version` and you see a response like `forge 0.2.0 (816e00b 2023-03-16T00:05:26.396218Z)` ## Quickstart ``` git clone https://github.com/Cyfrin/2023-11-Santas-List cd 2023-11-Santas-List make ``` Or optionally, you can run: ``` forge install forge build ``` # Usage ## Testing ``` forge test ``` ### Test Coverage ``` forge coverage ``` and for coverage based testing: ``` forge coverage --report debug ``` # Audit Scope Details - Commit Hash: e3370783aeda4b41e0054cf1febe75020b0beaae - In Scope: ``` ./src/ #-- SantaToken.sol #-- SantasList.sol #-- TokenUri.sol ``` ## Compatibilities - Solc Version: 0.8.22 - Chain(s) to deploy contract to: - Arbitrum - Tokens - `SantaToken` ## Roles - `Santa` - Deployer of the protocol, should only be able to do 2 things: - `checkList` - Check the list once - `checkTwice` - Check the list twice - Additionally, it's OK if Santa mints themselves tokens. - `User` - Participant of the raffle, has the power to enter the raffle with the `enterRaffle` function and refund value through `refund` function. ## Known Issues - We are aware that we are missing a number of zero address checks, please ignore. - The Christmas date is approximate, if it's more then 24 hours before or after Christmas, please report that. Otherwise, it's OK.

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