Making Manager with solidity

Front-end.txt

@@ -0,0 +1,3 @@
+first: Go app.js
+
+The new ethers contract in app.js contain the contrat of the command hardhat node

Resources for study about dapp.txt

@@ -0,0 +1,31 @@
+first: create a react app
+second: npm install ethers hardhat @nomiclabs/hardhat-waffle ethereum-waffle chai @nomiclabs/hardhat-ethers
+thirth: npx hardhat //to create an app hardhat, but delete the readme because it'll cause a conflict
+fourth: add to file hardhat.config.js: 
+paths: {
+    artifacts: './src/artifacts'
+  },
+  networks: {
+    hardhat: {
+      chainId: 1337
+    }
+  }
+
+fifth: npx hardhat compile
+
+sixth:in another terminal uses npx hardhat node show wallets with eth to test
+
+seventh: Use private key to import one test wallet
+
+eighth: npx hardhat run scripts/deploy.js --network localhost to pick up one address of the newly deployed contract
+then we can see in another terminal that the wallets works
+
+nineth: npx hardhat test
+tenth: npm run start
+
+for main net uses: rinkeby: {
+      url: 'Infura Key',
+      accounts: [`Replace Private Key`]
+    }
+
+

contracts/Manager.sol

@@ -0,0 +1,27 @@
+//SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+contract Manager {
+    struct Ticket {
+        uint8 status;
+        string name;
+    }
+
+    Ticket[] public tickets;
+
+    function createTicket(string memory _name) external {
+        tickets.push(Ticket(0, _name));
+    }
+
+    function updateTicketName(uint256 _index, string memory _name) external {
+        tickets[_index].name = _name;
+    }
+
+    function updateTicketStatus(uint256 _index, uint8 _status) external {
+        tickets[_index].status = _status;
+    }
+
+    function getTickets() external view returns (Ticket[] memory) {
+        return tickets;
+    }
+}

hardhat.config.js

@@ -24,10 +24,6 @@ module.exports = {
   networks: {
     hardhat: {
       chainId: 1337
-    },
-    rinkeby: {
-      url: 'Infura Key',
-      accounts: [`Replace Private Key`]
     }
     //For main net uses rikeby
   }

scripts/deploy.js

@@ -3,7 +3,7 @@
 //
 // When running the script with `npx hardhat run <script>` you'll find the Hardhat
 // Runtime Environment's members available in the global scope.
-const hre = require("hardhat");
+const hre = require('hardhat')
 
 async function main() {
   // Hardhat always runs the compile task when running scripts with its command
@@ -14,19 +14,19 @@ async function main() {
   // await hre.run('compile');
 
   // We get the contract to deploy
-  const Greeter = await hre.ethers.getContractFactory("Greeter");
-  const greeter = await Greeter.deploy("Hello, Hardhat!");
+  const Manager = await hre.ethers.getContractFactory('Manager')
+  const manager = await Manager.deploy()
 
-  await greeter.deployed();
+  await manager.deployed()
 
-  console.log("Greeter deployed to:", greeter.address);
+  console.log('Greeter deployed to:', manager.address)
 }
 
 // We recommend this pattern to be able to use async/await everywhere
 // and properly handle errors.
 main()
   .then(() => process.exit(0))
-  .catch((error) => {
-    console.error(error);
-    process.exit(1);
-  });
+  .catch(error => {
+    console.error(error)
+    process.exit(1)
+  })