# airdrop-js

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Supports transfer of ERC20 tokens to a list of recipient addresses in L1 with claim-based approach known as L1-Claim. Recipient who triggers claiming pays the gas fee

## Prerequisites

The following tools need to be installed:

1. [Git](http://git-scm.com/)
2. [Node.js 18+](http://nodejs.org/)

## Capabilities and Frameworks

| Capability           | Module                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| -------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Dependence Framework | [typescript](https://www.npmjs.com/package/typescript) adds optional types to JavaScript that support tools for large-scale JavaScript applications, [thirdweb-dev](https://github.com/thirdweb-dev/js) performant & lightweight SDK to interact with any EVM chain from Node, React and React Native                                                                                                                                     |
| Coding Standard      | [eslint](https://eslint.org/) statically analyzes your code to quickly find and fix problems based on opt-in [rules](https://eslint.org/docs/latest/rules/), [prettier](https://prettier.io/docs/en/) an opinionated code formatter to build and enforce a style guide on save, [eslint-config-prettier](https://github.com/prettier/eslint-config-prettier) to turns off all rules that are unnecessary or might conflict with Prettier. |
| Testing Framework    | [Jest](https://jestjs.io/) a delightful JavaScript Testing Framework with a focus on simplicity.                                                                                                                                                                                                                                                                                                                                          |
| Useful Links         | [npmtrends](https://npmtrends.com/) Compare package download counts over time, [act](https://nektosact.com/introduction.html) run your GitHub Actions locally, [Actionlint](https://marketplace.visualstudio.com/items?itemName=arahata.linter-actionlint) static checker for GitHub Actions workflow files,[TypeDoc](https://typedoc.org/guides/overview/) is a documentation generator for TypeScript                                   |

## How to

### Clone and run build

```bash
git clone git@github.com:myria-libs/airdrop-js.git
# install dependencies
npm install | yarn install
# run build
npm run build | yarn build
```

### Run lint

```bash
# check lint's rules
npm run lint | yarn lint
# check lint's rules and try to fix
npm run lint:fix | yarn lint:fix
# format your code
npm run prettier:format | yarn prettier:format
```

### Run test

```bash
npm test | yarn test
```

### Integration as a consumer

1. Generate merkleTree info from whitelist

```typescript
// Configure snapshot
const SNAPSHOT_WHITELIST = [
    {
        recipient: '0x663217Fd41198bC5dB2F69313a324D0628daA9E8',
        amount: 1,
    },
];
const totalAmount = SNAPSHOT_WHITELIST.reduce(
    (accumulator, currentValue) => accumulator + currentValue.amount,
    0,
);
// Invoke airdrop-js to generate. Will be use as input for next step
const { merkleRoot, snapshotUri } = await generateMerkleRootByMyria(
    snapshotWhitelist,
    airdropAddress,
    tokenAddress,
);
```

2. Approve whitelist and allowance

```typescript
import { Client, Config, Transaction, Type, Wallet } from '@myria/airdrop-js';

// 1. Partner plugs in necessary configs (credentials)
const config = Config.getInstance({})
    .setTokenAddress($YOUR_TOKEN_CONTRACT_ADDRESS)
    .setAirdropAddress($YOUR_AIRDROP_CONTRACT_ADDRESS)
    .setThirdwebClientSecret($YOUR_THIRD_WEB_CLIENT_SECRETE)
    .setSelectedChain(Type.SupportingChain.SEPOLIA)
    .setDebug(true);
// partner retrieve the necessary variable
const { airdropContract, tokenContract, client } = getThirdwebContract(
    Config.getInstance().getThirdwebClientSecret(),
    config.getTokenAddress(),
    config.getAirdropAddress(),
    Config.getInstance().getSelectedChain(),
);
// partner inject ETH_PRIVATE_KEY from their system
const { privateKeyToAccount } = Wallet;
const ownerContractAccount = privateKeyToAccount({
    client,
    privateKey: ETH_PRIVATE_KEY,
});
// 2. Partner invokes `airdrop-js` to perform approve whitelist and allowance on-chain
const { approveWhitelistAndAllowance } = Transaction;
const approveWhitelistAndAllowanceResult = await approveWhitelistAndAllowance(
    ownerContractAccount,
    merkleRoot,
    snapshotUri,
    airdropContract,
    tokenContract,
    totalAmount,
    {
        retries: 3,
        delay: 1000,
    },
    {
        extraMaxPriorityFeePerGasPercentage:
            Type.DEFAULT_EXTRA_PRIORITY_TIP_PERCENTAGE,
        extraGasPercentage: Type.DEFAULT_EXTRA_GAS_PERCENTAGE,
        extraOnRetryPercentage: Type.DEFAULT_EXTRA_ON_RETRY_PERCENTAGE,
    },
);
```

> Full E2E integration reference in the [example/src/index.js](https://github.com/myria-libs/airdrop-js/blob/main/example/src/index.js). Should be straightforward

## Collaboration

1. We use the git rebase strategy to keep tracking meaningful commit message. Help to enable rebase when pull `$ git config --local pull.rebase true`
2. Follow TypeScript Style Guide [Google](https://google.github.io/styleguide/tsguide.html)
3. Follow Best-Practices in coding:
    1. [Clean code](https://github.com/labs42io/clean-code-typescript) make team happy
    2. [Return early](https://szymonkrajewski.pl/why-should-you-return-early/) make code safer and use resource Efficiency
    3. [Truthy & Falsy](https://frontend.turing.edu/lessons/module-1/js-truthy-falsy-expressions.html) make code shorter
    4. [SOLID Principles](https://javascript.plainenglish.io/solid-principles-with-type-script-d0f9a0589ec5) make clean code
    5. [DRY & KISS](https://dzone.com/articles/software-design-principles-dry-and-kiss) avoid redundancy and make your code as simple as possible
4. Make buildable commit and pull latest code from `main` branch frequently
5. Follow the [Semantic Versioning](https://semver.org/) once we are ready for release
6. Use readable commit message [karma](http://karma-runner.github.io/6.3/dev/git-commit-msg.html)

```bash
     /‾‾‾‾‾‾‾‾
🔔  <  Ring! Please use semantic commit messages
     \________


<type>(<scope>): ([issue number]) <subject>
    │      │        |             │
    |      |        |             └─> subject in present tense. Not capitalized. No period at the end.
    |      |        |
    │      │        └─> Issue number (optional): Jira Ticket or Issue number
    │      │
    │      └─> Scope (optional): eg. Articles, Profile, Core
    │
    └─> Type: chore, docs, feat, fix, refactor, style, ci, perf, build, or test.
```