zSale-SDK

What is the zSale SDK?

The zSale SDK acts as an interface with the zNS sale contract. This allows you to create sales of subdomains that enable a whitelisted time period. This period means that only approved users put on a list by the seller can purchase domains.

How do you use it?

To use the SDK you must first create an Instance to work with. The createInstance function exported by the SDK takes a Config as an argument, which has three properties.

• isEth: boolean - Indicates whether purchases for the sale of domains will be made with Ethereum or not. The alternative is an ERC20 token, e.g. $WILD. If this is set to false, it is expected that the contract provided in contractAddress: string below contains a valid value for saleToken, an address of an ERC20 contract.
• contractAddress - The WhitelistSimpleSale contract implementation for this specific sale.
• merkleTreeFileUri: string - The IPFS URL (ipfs://Qm...) where the merkle tree can be found. This file is used to derive information about a sale's whitelist.

If your sale is using an ERC20 token than customers in the sale will additionally have to call approve(spender, amount) to give the smart contract permission to use their tokens. For this, the amount argument is optional and if it is not specified the SDK defaults to the maximum safe value in TypeScript.

You can see how much the contract is allowed to use from a given user by checking the allowance(owner, spender) function.

You are also able to see the balance of a wallet at any time by calling getEthBalance(signer), if the sale is using Ethereum, or balanceOf(saleTokenAddress, userAddress, provider) if the sale is using an ERC20 token.

Making a Purchase

Purchasing a domain has several user friendly checks it does before calling the contract function directly. This is a gas efficiency so that functions we know will fail don't reach the smart contract and waste the users funds.

• Balance: First a user's balance is checked to confirm that they have the funds to make the purchase.
• Purchase Limit: A user is only allowed to purchase a maximum number of domains per account and if this purchase goes above that set value it will not go through.
• Sale Status: The status of a sale is also checked upon each purchase so that we can confirm if a sale has started, is in a whitelist only phase, or is in a public purchase phase. If the sale has not started, the purchase will fail. If the sale is in whitelist onky and the user is not on the whitelist, the purchase will also fail.

Other Functionality

The owner of the sale has the ability to call setPauseStatus to pause or unpause the contract. This can done if halting the sale is needed at any point.

SDK Functions

Below is a list of all functions exposed through the zSale SDK.

Sale Information

getSalePrice(signer: ethers.Signer): Promise<string>;

getSaleData(signer: ethers.Signer): Promise<SaleData>;

getSaleStartBlock(signer: ethers.Signer): Promise<string>;

getSaleStatus(signer: ethers.Signer): Promise<SaleStatus>;

getSaleMintlistDuration(signer: ethers.Signer): Promise<ethers.BigNumber>;

getTotalForSale(signer: ethers.Signer): Promise<ethers.BigNumber>;

Aggregate Data

getNumberOfDomainsSold(signer: ethers.Signer): Promise<ethers.BigNumber>;

getDomainsPurchasedByAccount(signer: ethers.Signer): Promise<number>;

getMintlist(merkleFileUri: string, gateway: IPFSGatewayUri): Promise<Whitelist>;

getMintlistedUserClaim(address: string, gateway: IPFSGatewayUri: Promise<Claim>;

Helpers

getBlockNumber(): Promise<number>;

getEthBalance(signer: ethers.Signer): Promise<string>;

isUserOnMintlist(address: string, gateway: IPFSGatewayUri): Promise<boolean>;

Utility

purchaseDomains(count: ethers.BigNumber, signer: ethers.Signer): Promise<ethers.ContractTransaction>;

setPauseStatus(pauseStatus: boolean, signer: ethers.Signer): Promise<ethers.ContractTransaction>;

Release

Release tagging and publishing is now done through a CircleCi integration.

• When adding one of the release triggers, make sure to use the correct capitalization

• By including "fix()" as the title of your pull request or commit message it will trigger a patch/fix release

• By including "feat()" as the title of your pull request or commit message it will trigger a feature/minor release

• By including "BREAKING CHANGE" as the title of your pull request or commit message it will trigger a major release

• You may skip a release by including [skip ci] in the commit message, if done this way then the current commit will not create a new tag and will not publish changes to the NPM package