Crowd funding

https://user-images.githubusercontent.com/55044734/164529677-27af29f2-96d6-4ce6-bb61-c1f0c63a3beb.mp4

Project features :bulb:

• [x] User can start a fundraising.
• [x] Anyone can contribute.
• [x] End project if targeted contribution amount reached.
• [x] Expire project if targeted amount not fulfills between deadline.
• [x] Contributors can withdraw contributed amount if project expire.
• [x] Owner need to request contributors for withdraw amount.
• [x] Owner can withdraw amount if 50% contributors agree.
• [x] Connect with waller.

Tech stack & packages used 📦

| package | explain | | ------------------------------------------------------------------- | --------------------------------------------------------------------- | | Next.js | For building frontend | | solidity | For writting smart contracts | | tailwind css | For building design | | ether.js | Web3 client (contract testing ). | | web3.js | Web3 client (Frontend Next.js). | | Chai | javascript testing framework. | | react-toastify | For Notification. | | hardhat | Ethereum development environment. | | Redux | For managing and centralizing application state. |

How to run :runner: :

• Run hardhat node

npx hardhat node

• Run test cases

npx hardhat test

• Connect HardHat Account to Metamask

• Deploy contract in local hardhat node

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

• Run Next.js frontend

cd client
    npm run dev

• Connect account to website

Web3.js

• Load web3
• Connect with contract

new web3.eth.Contract(jsonInterface[, address][, options])

• Callback promises events

.on('transactionHash', function(hash){ ... })
    .on('error', function(error){ ... })

• Subscribe to event

contractName.events.EventName([options][, callback])

• Fetch all data from contract event

contractName.getPastEvents(EventName[, options][, callback])

Hardhat commands

npx hardhat accounts
npx hardhat compile
npx hardhat clean
npx hardhat test
npx hardhat node
node scripts/deploy.js
npx hardhat help
npx hardhat run scripts/deploy.js --network <network name>