Submission/assignment-12/unrealtim-tech

assignments/12-crowd-funding-contract/README.md

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+# Sample Hardhat 3 Beta Project (`mocha` and `ethers`)
+
+This project showcases a Hardhat 3 Beta project using `mocha` for tests and the `ethers` library for Ethereum interactions.
+
+To learn more about the Hardhat 3 Beta, please visit the [Getting Started guide](https://hardhat.org/docs/getting-started#getting-started-with-hardhat-3). To share your feedback, join our [Hardhat 3 Beta](https://hardhat.org/hardhat3-beta-telegram-group) Telegram group or [open an issue](https://github.com/NomicFoundation/hardhat/issues/new) in our GitHub issue tracker.
+
+## Project Overview
+
+This example project includes:
+
+- A simple Hardhat configuration file.
+- Foundry-compatible Solidity unit tests.
+- TypeScript integration tests using `mocha` and ethers.js
+- Examples demonstrating how to connect to different types of networks, including locally simulating OP mainnet.
+
+## Usage
+
+### Running Tests
+
+To run all the tests in the project, execute the following command:
+
+```shell
+npx hardhat test
+```
+
+You can also selectively run the Solidity or `mocha` tests:
+
+```shell
+npx hardhat test solidity
+npx hardhat test mocha
+```
+
+### Make a deployment to Sepolia
+
+This project includes an example Ignition module to deploy the contract. You can deploy this module to a locally simulated chain or to Sepolia.
+
+To run the deployment to a local chain:
+
+```shell
+npx hardhat ignition deploy ignition/modules/Counter.ts
+```
+
+To run the deployment to Sepolia, you need an account with funds to send the transaction. The provided Hardhat configuration includes a Configuration Variable called `SEPOLIA_PRIVATE_KEY`, which you can use to set the private key of the account you want to use.
+
+You can set the `SEPOLIA_PRIVATE_KEY` variable using the `hardhat-keystore` plugin or by setting it as an environment variable.
+
+To set the `SEPOLIA_PRIVATE_KEY` config variable using `hardhat-keystore`:
+
+```shell
+npx hardhat keystore set SEPOLIA_PRIVATE_KEY
+```
+
+After setting the variable, you can run the deployment with the Sepolia network:
+
+```shell
+npx hardhat ignition deploy --network sepolia ignition/modules/Counter.ts
+```

assignments/12-crowd-funding-contract/artifacts/build-info/solc-0_8_31-2bb4e90243aac702e22940d03732e66576179f6f.json

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+{
+  "_format": "hh3-sol-build-info-1",
+  "id": "solc-0_8_31-2bb4e90243aac702e22940d03732e66576179f6f",
+  "solcVersion": "0.8.31",
+  "solcLongVersion": "0.8.31+commit.fd3a2265",
+  "userSourceNameMap": {
+    "contracts/Counter.sol": "project/contracts/Counter.sol"
+  },
+  "input": {
+    "language": "Solidity",
+    "settings": {
+      "evmVersion": "osaka",
+      "optimizer": {
+        "enabled": true,
+        "runs": 200
+      },
+      "outputSelection": {
+        "*": {
+          "": [
+            "ast"
+          ],
+          "*": [
+            "abi",
+            "evm.bytecode",
+            "evm.deployedBytecode",
+            "evm.methodIdentifiers",
+            "metadata"
+          ]
+        }
+      },
+      "remappings": []
+    },
+    "sources": {
+      "project/contracts/Counter.sol": {
+        "content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity ^0.8.28;\n\ncontract Counter {\n  uint public x;\n\n  event Increment(uint by);\n\n  function inc() public {\n    x++;\n    emit Increment(1);\n  }\n\n  function incBy(uint by) public {\n    require(by > 0, \"incBy: increment should be positive\");\n    x += by;\n    emit Increment(by);\n  }\n}\n"
+      }
+    }
+  }
+}

assignments/12-crowd-funding-contract/artifacts/build-info/solc-0_8_31-79fb429896f3a0d97ab2b5ff7b4c7d5ebe992caa.json

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+{
+  "_format": "hh3-sol-build-info-1",
+  "id": "solc-0_8_31-79fb429896f3a0d97ab2b5ff7b4c7d5ebe992caa",
+  "solcVersion": "0.8.31",
+  "solcLongVersion": "0.8.31+commit.fd3a2265",
+  "userSourceNameMap": {
+    "contracts/Escrow.sol": "project/contracts/Escrow.sol"
+  },
+  "input": {
+    "language": "Solidity",
+    "settings": {
+      "evmVersion": "osaka",
+      "optimizer": {
+        "enabled": true,
+        "runs": 200
+      },
+      "outputSelection": {
+        "*": {
+          "": [
+            "ast"
+          ],
+          "*": [
+            "abi",
+            "evm.bytecode",
+            "evm.deployedBytecode",
+            "evm.methodIdentifiers",
+            "metadata"
+          ]
+        }
+      },
+      "remappings": []
+    },
+    "sources": {
+      "project/contracts/Escrow.sol": {
+        "content": "// SPDX-License-Identifier: UNLICENSED\npragma solidity ^0.8.31;\n\ncontract Escrow {\n  uint public transactionCount = 1;\n  address public contractAddress;\n\n  enum State {\n    AWAITING_PAYMENT,\n    AWAITING_DELIVERY,\n    AWAITING_FUNDS_DISBURSEMENT,\n    COMPLETE\n  }\n\n  struct Order {\n    uint id;\n    address buyer;\n    address seller;\n    uint amount;\n    State status;\n  }\n\n  mapping(uint => Order) public orders;\n\n  constructor() {\n    contractAddress = msg.sender;\n  }\n\n  modifier notAddressZero(address _addr) {\n    require(_addr != address(0), 'Address cant be address zero');\n    _;\n  }\n\n  modifier onlyBuyer(uint _id) {\n    require(\n      msg.sender == orders[_id].buyer,\n      'Only buyer can call this function'\n    );\n    _;\n  }\n\n  modifier onlySeller(uint _id) {\n    require(\n      msg.sender == orders[_id].seller,\n      'Only seller can call this function'\n    );\n    _;\n  }\n\n  modifier onlyContract() {\n    require(\n      msg.sender == contractAddress,\n      'Only Contract can call this function'\n    );\n    _;\n  }\n\n  modifier validState(uint _id, State _state) {\n    require(_state == orders[_id].status, 'Invalid state');\n    _;\n  }\n\n  modifier paymentMade(uint _id) {\n    require(\n      address(this).balance >= orders[_id].amount && address(this).balance > 0,\n      'Amount not paid'\n    );\n    _;\n  }\n\n  function createOrder(address _buyer, address _seller) public {\n    require(_buyer != address(0), 'Address cant be address zero');\n    require(_seller != address(0), 'Address cant be address zero');\n    orders[transactionCount].id = transactionCount;\n    orders[transactionCount].buyer = _buyer;\n    orders[transactionCount].seller = _seller;\n    orders[transactionCount].status = State.AWAITING_PAYMENT;\n    transactionCount++;\n  }\n\n  function deposit(\n    uint _id\n  ) public payable onlyBuyer(_id) validState(_id, State.AWAITING_PAYMENT) {\n    orders[_id].amount = msg.value;\n    orders[_id].status = State.AWAITING_DELIVERY;\n  }\n\n  function sendDelivery(\n    uint _transactionCount\n  )\n    public\n    paymentMade(_transactionCount)\n    validState(_transactionCount, State.AWAITING_DELIVERY)\n  {\n    orders[_transactionCount].status = State.AWAITING_FUNDS_DISBURSEMENT;\n  }\n\n  function releaseFundsToSeller(\n    uint _id\n  )\n    external\n    onlyContract\n    paymentMade(_id)\n    validState(_id, State.AWAITING_FUNDS_DISBURSEMENT)\n  {\n    Order memory _order = orders[_id];\n\n    (bool success, ) = _order.seller.call{value: _order.amount}('');\n    require(success, 'Transfer failed');\n    _order.status = State.COMPLETE;\n    orders[_id] = _order;\n  }\n\n  function refundFundsToBuyer(\n    uint _id\n  )\n    external\n    onlyContract\n    paymentMade(_id)\n    validState(_id, State.AWAITING_DELIVERY)\n  {\n    Order storage _order = orders[_id];\n\n    (bool success, ) = _order.buyer.call{value: _order.amount}('');\n    require(success, 'Refund failed');\n  }\n}\n"
+      }
+    }
+  }
+}

assignments/12-crowd-funding-contract/artifacts/contracts/Counter.sol/Counter.json

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+{
+  "_format": "hh3-artifact-1",
+  "contractName": "Counter",
+  "sourceName": "contracts/Counter.sol",
+  "abi": [
+    {
+      "anonymous": false,
+      "inputs": [
+        {
+          "indexed": false,
+          "internalType": "uint256",
+          "name": "by",
+          "type": "uint256"
+        }
+      ],
+      "name": "Increment",
+      "type": "event"
+    },
+    {
+      "inputs": [],
+      "name": "inc",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [
+        {
+          "internalType": "uint256",
+          "name": "by",
+          "type": "uint256"
+        }
+      ],
+      "name": "incBy",
+      "outputs": [],
+      "stateMutability": "nonpayable",
+      "type": "function"
+    },
+    {
+      "inputs": [],
+      "name": "x",
+      "outputs": [
+        {
+          "internalType": "uint256",
+          "name": "",
+          "type": "uint256"
+        }
+      ],
+      "stateMutability": "view",
+      "type": "function"
+    }
+  ],
+  "bytecode": "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",
+  "deployedBytecode": "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",
+  "linkReferences": {},
+  "deployedLinkReferences": {},
+  "immutableReferences": {},
+  "inputSourceName": "project/contracts/Counter.sol",
+  "buildInfoId": "solc-0_8_31-2bb4e90243aac702e22940d03732e66576179f6f"
+}

assignments/12-crowd-funding-contract/artifacts/contracts/Counter.sol/artifacts.d.ts

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+// This file was autogenerated by Hardhat, do not edit it.
+// prettier-ignore
+// tslint:disable
+// eslint-disable
+// biome-ignore format: see above
+
+export interface Counter$Type {
+  readonly _format: "hh3-artifact-1";
+  readonly contractName: "Counter";
+  readonly sourceName: "contracts/Counter.sol";
+  readonly abi: [{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"by","type":"uint256"}],"name":"Increment","type":"event"},{"inputs":[],"name":"inc","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"by","type":"uint256"}],"name":"incBy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"x","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"}];
+  readonly bytecode: "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";
+  readonly deployedBytecode: "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";
+  readonly linkReferences: {};
+  readonly deployedLinkReferences: {};
+  readonly immutableReferences: {};
+  readonly inputSourceName: "project/contracts/Counter.sol";
+  readonly buildInfoId: "solc-0_8_31-2bb4e90243aac702e22940d03732e66576179f6f";
+};
+
+import "hardhat/types/artifacts";
+declare module "hardhat/types/artifacts" {
+  interface ArtifactMap {
+    ["Counter"]: Counter$Type;
+    ["contracts/Counter.sol:Counter"]: Counter$Type;
+  }
+}