whitelist-dApp-for-your-upcoming-NFT-Collection

Deployed App: https://whitelist-d-app-for-your-upcoming-nft-collection.vercel.app/

Built using Next.js 13 (App Router)

Smart Contract

To build the smart contract we will be using Hardhat. Hardhat is an Ethereum development environment and framework designed for full stack development in Solidity. In simple words you can write your smart contract, deploy them, run tests, and debug your code.

• First, you need to create a Whitelist-Daap folder where the Hardhat project and your Next.js app will later go
• Open up a terminal and execute these commands

mkdir whitelist-dApp-for-your-upcoming-NFT-Collection
cd whitelist-dApp-for-your-upcoming-NFT-Collection

• Then, in Whitelist-Daap folder, you will set up Hardhat project

mkdir hardhat-folder
cd hardhat-folder
npm init --yes
npm install --save-dev hardhat

• In the same directory where you installed Hardhat run:

  npx hardhat

  • Select Create a Javascript project
  • Press enter for the already specified Hardhat Project root
  • Press enter for the question on if you want to add a .gitignore
  • Press enter for Do you want to install this sample project's dependencies with npm (@nomicfoundation/hardhat-toolbox)?

Now you have a hardhat project ready to go!

If you are not on mac, please do this extra step and install these libraries as well :)

npm install --save-dev @nomicfoundation/hardhat-toolbox

• Start by creating a new file inside the contracts directory called Whitelist.sol.

• Lets deploy the contract to sepolia network. Create a new file, or replace the default file named deploy.js under the scripts folder

• Now we will write some code to deploy the contract in deploy.js file.

• Now create a .env file in the hardhat-tutorial folder and add the following lines, use the instructions in the comments to get your Alchemy API Key URL and RINKEBY Private Key. Make sure that the account from which you get your sepolia private key is funded with Rinkeby Ether.

  // Go to https://www.quicknode.com/?utm_source=learnweb3&utm_campaign=generic&utm_content=sign-up&utm_medium=learnweb3, sign up, create
  // quicknode is a node provider that lets you connect to various different blockchains. We will be using it to deploy our contract through Hardhat. After creating an //account, Create an endpoint on Quicknode, select Ethereum, and then select the Goerli network. Click Continue in the bottom right and then click on Create Endpoint. //Copy the link given to you in HTTP Provider and add it to the .env file below for QUICKNODE_HTTP_URL.
// NOTE: If you previously set up a Goerli Endpoint on Quicknode during the Freshman Track, you can use the same URL as before. No need to delete it and set up a new one.
//To get your private key, you need to export it from Metamask. Open Metamask, click on the three dots, click on Account Details and then Export Private Key. MAKE SURE //YOU ARE USING A TEST ACCOUNT THAT DOES NOT HAVE MAINNET FUNDS FOR THIS. Add this Private Key below in your .env file for PRIVATE_KEY variable.

QUICKNODE_HTTP_URL="add-quicknode-http-provider-url-here"

PRIVATE_KEY="add-the-private-key-here"

• Now we will install dotenv package to be able to import the env file and use it in our config. Open up a terminal pointing athardhat-tutorial directory and execute this command

  npm install dotenv

• Now open the hardhat.config.js file, we would add the sepolia network here so that we can deploy our contract to sepolia. Replace all the lines in the hardhar.config.js file with the given below lines

• Compile the contract, open up a terminal pointing athardhat-folder directory and execute this command

     npx hardhat compile

• To deploy, open up a terminal pointing athardhat-tutorial directory and execute this command

  npx hardhat run scripts/deploy.js --network sepolia

• Save the Whitelist Contract Address that was printed on your terminal in your notepad, you would need it futher down in the tutorial.

Website

• To develop the website we will use React and Next Js. React is a javascript framework used to make websites and Next.js is a React framework that also allows writing backend APIs code along with the frontend, so you don't need two separate frontend and backend services.

• First, You will need to create a new next app.

• To create this next-app, in the terminal point to whitelist-dApp-for-your-upcoming-NFT-Collection folder and type

  npx create-next-app@latest

  and press enter for all the questions

• Your folder structure should look something like

  - whitelist-dApp-for-your-upcoming-NFT-Collection
      - hardhat-folder
      - my-app
  

• Now to run the app, execute these commands in the terminal

  cd my-app
  npm run dev
  

• Now go to http://localhost:3000, your app should be running 🤘

• Now lets install Web3Modal library. Web3Modal is an easy to use library to help developers easily allow their users to connect to your dApps with all sorts of different wallets. By default Web3Modal Library supports injected providers like (Metamask, Dapper, Gnosis Safe, Frame, Web3 Browsers, etc) and WalletConnect, You can also easily configure the library to support Portis, Fortmatic, Squarelink, Torus, Authereum, D'CENT Wallet and Arkane. (Here's a live example on Codesandbox.io)

• Open up a terminal pointing atmy-app directory and execute this command

  npm install web3modal

• In the same terminal also install ethers.js

  npm install ethers

• In your my-app/public folder, download this image and rename it to crypto-devs.svg

• Now go to app folder and replace all the contents of page.modules.css file with the CSS code, this would add some styling to your dapp.

• Add js code in page.js

• Now create a new folder under the my-app folder and name it constants.

• In the constants folder create a file, index.js and paste the following code.

  export const WHITELIST_CONTRACT_ADDRESS = "YOUR_WHITELIST_CONTRACT_ADDRESS";
  export const abi = YOUR_ABI;

• Replace "YOUR_WHITELIST_CONTRACT_ADDRESS" with the address of the whitelist contract that you deployed.

• Replace "YOUR_ABI" with the ABI of your Whitelist Contract. To get the ABI for your contract, go to your hardhat-tutorial/artifacts/contracts/Whitelist.sol folder and from your Whitelist.json file get the array marked under the "abi" key (it will be. a huge array, close to 100 lines if not more).

• Now in your terminal which is pointing to my-app folder, execute

  npm run dev

Your whitelist dapp should now work without errors 🚀

Push to github

Make sure before proceeding you have pushed all your code to github :)

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Deploying your dApp

We will now deploy your dApp, so that everyone can see your website and you can share it with all of your LearnWeb3 DAO friends.

• Go to Vercel and sign in with your GitHub
• Then click on New Project button and then select your Whitelist dApp repo
• 
• When configuring your new project, Vercel will allow you to customize your Root Directory
• Click Edit next to Root Directory and set it to my-app
• Select the Framework as Next.js
• Click Deploy
• Now you can see your deployed website by going to your dashboard, selecting your project, and copying the URL from there!