add redeem resolver

.gitignore

@@ -129,4 +129,13 @@ dist
 .yarn/install-state.gz
 .pnp.*
 
-.nx
+.nx
+
+#Hardhat files
+coverage
+coverage.json
+typechain
+cache
+artifacts
+.openzeppelin
+build

apps/contract/.env.sample

@@ -0,0 +1 @@
+TESTNET_PRIVATE_KEY=

apps/contract/.solhint.json

@@ -0,0 +1,7 @@
+{
+  "extends": "solhint:recommended",
+  "rules": {
+    "compiler-version": ["error", "^0.8.0"],
+    "func-visibility": ["warn", { "ignoreConstructors": true }]
+  }
+}

apps/contract/.solhintignore

@@ -0,0 +1 @@
+node_modules

apps/contract/hardhat.config.js

@@ -0,0 +1,105 @@
+const fs = require('fs')
+const fsExtra = require('fs-extra')
+const { subtask, task } = require('hardhat/config')
+const { TASK_CLEAN, TASK_COMPILE } = require('hardhat/builtin-tasks/task-names')
+// require('@nomiclabs/hardhat-waffle')
+// require('@nomiclabs/hardhat-ethers')
+require('hardhat-deploy')
+require('hardhat-contract-sizer')
+require('@openzeppelin/hardhat-upgrades')
+
+require('dotenv').config({ path: './.env' })
+
+let mnemonic = process.env.MNEMONIC
+if (!mnemonic) {
+  mnemonic = 'test test test test test test test test test test test junk'
+}
+const mnemonicAccounts = {
+  mnemonic,
+}
+
+const account = {
+  Testnet: process.env.TESTNET_PRIVATE_KEY,
+  Mainnet: process.env.MAINNET_PRIVATE_KEY,
+}
+
+// Default output dir to abi contracts in frontend
+const contractsFrontDir = './compiled'
+
+// You need to export an object to set up your config
+// Go to https://hardhat.org/config/ to learn more
+
+/**
+ * @type import('hardhat/config').HardhatUserConfig
+ */
+const config = {
+  solidity: {
+    version: '0.8.20',
+    settings: {
+      evmVersion: "paris",
+      optimizer: {
+        enabled: true,
+        runs: 200,
+      },
+    },
+  },
+  paths: {
+    sources: './src',
+    tests: './test',
+    cache: './cache',
+    artifacts: './artifacts',
+  },
+  defaultNetwork: 'optimismSepolia',
+  networks: {
+    hardhat: {
+      accounts: mnemonicAccounts,
+    },
+    optimismSepolia: {
+      url: 'https://sepolia.optimism.io',
+      chainId: 11155420,
+      accounts: account.Testnet ? [account.Testnet] : mnemonicAccounts,
+    },
+  },
+  namedAccounts: {
+    deployer: {
+      default: 0, // here this will by default take the first account as deployer
+    },
+  },
+  mocha: {
+    timeout: 50000, // 50 seconds timeout
+  },
+}
+
+// // This is a sample Hardhat task. To learn how to create your own go to
+// // https://hardhat.org/guides/create-task.html
+// task('accounts', 'Prints the list of accounts', async (taskArgs, hre) => {
+//   const accounts = await hre.ethers.getSigners()
+//   accounts.forEach((acc) => {
+//     console.log(acc.address)
+//   })
+// })
+
+task(TASK_CLEAN, 'Clean all artifacts & folder contracts in frontend').setAction(async (taskArgs, hre, runSuper) => {
+  await runSuper()
+  if (fs.existsSync('./deployments')) {
+    fs.rmdirSync('./deployments', { recursive: true })
+  }
+  await hre.run('clean-front-contracts')
+})
+
+subtask('clean-front-contracts', 'Clear frontend contracts folder').setAction(async () => {
+  // Clear if exist
+  if (fs.existsSync(contractsFrontDir)) {
+    fsExtra.emptyDirSync(contractsFrontDir)
+  }
+})
+
+task(TASK_COMPILE, 'Deploy contracts').setAction(async (taskArgs, hre, runSuper) => {
+  console.log('TASK_COMPILE', taskArgs)
+  if (!fs.existsSync(contractsFrontDir)) {
+    fs.mkdirSync(contractsFrontDir, { recursive: true })
+  }
+  await runSuper(taskArgs)
+})
+
+module.exports = config

apps/contract/scripts/deploy-ticket-redeem.js

@@ -0,0 +1,33 @@
+// We require the Hardhat Runtime Environment explicitly here. This is optional
+// but useful for running the script in a standalone fashion through `node <script>`.
+//
+// When running the script with `npx hardhat run <script>` you'll find the Hardhat
+// Runtime Environment's members available in the global scope.
+require('dotenv').config({ path: '../.env' })
+const { ethers } = require('hardhat')
+
+async function main() {
+  const [deployer] = await ethers.getSigners()
+  console.log('Deploying contracts with the account:', deployer.address)
+
+  console.log('deployer', deployer)
+
+  // const deployerBalance = (await deployer.getBalance()).toString()
+  // console.log('Account balance:', deployerBalance)
+
+  // if (deployerBalance === '0') return // deployment will fail
+
+  const RedeemResolver = await ethers.getContractFactory('RedeemResolver')
+  const redeemResolver = await RedeemResolver.deploy('0x4200000000000000000000000000000000000021')
+  await redeemResolver.deployed()
+
+  console.log('RedeemResolver deployed to:', redeemResolver.address)
+  console.log('RedeemResolver details:', redeemResolver)
+}
+
+// We recommend this pattern to be able to use async/await everywhere
+// and properly handle errors.
+main().catch((error) => {
+  console.error(error)
+  process.exitCode = 1
+})

apps/contract/src/RedeemResolver.sol

@@ -0,0 +1,53 @@
+
+// redeem ticket attestation resolver
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.20;
+
+import { SchemaResolver } from "@ethereum-attestation-service/eas-contracts/contracts/resolver/SchemaResolver.sol";
+import { IEAS, Attestation } from "@ethereum-attestation-service/eas-contracts/contracts/IEAS.sol";
+
+contract RedeemResolver is SchemaResolver {
+    error OutOfBounds();
+
+    mapping(bytes32 => bool) private redeemedMap;
+
+    constructor(IEAS eas) SchemaResolver(eas) {
+    }
+
+    function onAttest(Attestation calldata attestation, uint256 /*value*/) internal override returns (bool) {
+        bytes32 uid = _toBytes32(attestation.data, 0);
+
+        bool redeemed = redeemedMap[uid];
+        if (redeemed == true) {
+            return false;
+        }
+        redeemedMap[uid] = true;
+
+        return true;
+    }
+
+    function onRevoke(Attestation calldata /*attestation*/, uint256 /*value*/) internal pure override returns (bool) {
+        return true;
+    }
+
+    function toBytes32(bytes memory data, uint256 start) external pure returns (bytes32) {
+        return _toBytes32(data, start);
+    }
+
+    function _toBytes32(bytes memory data, uint256 start) private pure returns (bytes32) {
+        unchecked {
+            if (data.length < start + 32) {
+                revert OutOfBounds();
+            }
+        }
+
+        bytes32 tempBytes32;
+
+        // solhint-disable-next-line no-inline-assembly
+        assembly {
+            tempBytes32 := mload(add(add(data, 0x20), start))
+        }
+
+        return tempBytes32;
+    }
+}