add foundry support

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "packages/contracts/lib/forge-std"]
+	path = packages/contracts/lib/forge-std
+	url = https://github.com/foundry-rs/forge-std

packages/contracts/.gitignore

@@ -1,2 +1,11 @@
-# Hardhat
-build/
+# Foundry
+cache/
+out/
+.env
+broadcast/
+
+# JS
+node_modules/
+
+#yarn
+*.log

packages/contracts/.solhint.json

@@ -0,0 +1,14 @@
+{
+  "extends": "solhint:recommended",
+  "rules": {
+    "code-complexity": ["error", 8],
+    "compiler-version": ["error", ">=0.8.0 <0.8.20"],
+    "func-name-mixedcase": "off",
+    "func-visibility": ["error", { "ignoreConstructors": true }],
+    "max-line-length": ["error", 120],
+    "named-parameters-mapping": "warn",
+    "no-console": "off",
+    "not-rely-on-time": "off",
+    "one-contract-per-file": "off"
+  }
+}

packages/contracts/README.md

@@ -0,0 +1,20 @@
+# Byor Contracts
+
+## Usage
+```bash
+# Install
+$ cd packages/contracts && forge install
+
+# Build
+$ yarn build
+
+# Test
+$ yarn test
+
+# Deploy to anvil
+# open new terminal window
+$ anvil
+# update your .env file with a private key given to you by Anvil
+$ source .env
+$ yarn deploy:localhost
+```

packages/contracts/foundry.toml

@@ -0,0 +1,6 @@
+[profile.default]
+src = "src"
+out = "out"
+libs = ["node_modules", "lib"]
+
+# See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options

packages/contracts/package.json

@@ -3,37 +3,18 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
-    "deploy": "hardhat run scripts/deploy.ts",
-    "test": "hardhat test",
-    "compile": "hardhat compile",
-    "clean": "rm -rf build",
+    "deploy": "forge script script/deploy.s.sol:DeployScript --broadcast",
+    "deploy:localhost": "yarn deploy --fork-url http://localhost:8545 --private-keys $PRIVATE_KEY",
+    "test": "forge test",
+    "compile": "forge build",
+    "clean": "rm -rf cache out",
     "format:fix": "prettier --write .",
     "format": "prettier --check .",
-    "lint:fix": "yarn lint --fix",
-    "lint": "eslint --ext .ts,.tsx --max-warnings 0 test scripts",
-    "typecheck": "tsc --noEmit"
+    "lint": "forge fmt --check && solhint {script,src,test}/**/*.sol",
+    "typecheck": "forge build"
   },
   "devDependencies": {
-    "@ethersproject/abi": "^5.7.0",
-    "@ethersproject/providers": "^5.7.2",
-    "@nomicfoundation/hardhat-chai-matchers": "^1.0.6",
-    "@nomicfoundation/hardhat-network-helpers": "^1.0.8",
-    "@nomicfoundation/hardhat-toolbox": "^2.0.2",
-    "@nomiclabs/hardhat-ethers": "^2.2.3",
-    "@nomiclabs/hardhat-etherscan": "^3.1.7",
-    "@typechain/ethers-v5": "^10.2.1",
-    "@typechain/hardhat": "^6.1.6",
-    "@types/chai": "^4.3.5",
-    "@types/mocha": "^10.0.1",
-    "@types/node": "^20.1.2",
-    "chai": "^4.3.7",
-    "ethers": "^5.0.0",
-    "hardhat-gas-reporter": "^1.0.9",
-    "solidity-coverage": "^0.8.2",
-    "ts-node": "^10.9.1",
-    "typechain": "^8.1.1"
-  },
-  "dependencies": {
-    "hardhat": "^2.14.0"
+    "prettier": "^3.1.0",
+    "solhint": "^4.0.0"
   }
 }

packages/contracts/remappings.txt

@@ -0,0 +1,2 @@
+ds-test/=lib/forge-std/lib/ds-test/src/
+forge-std/=lib/forge-std/src/

packages/contracts/script/deploy.s.sol

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+import {Script} from "forge-std/Script.sol";
+import {Inputs} from "../src/Inputs.sol";
+
+contract DeployScript is Script {
+    function run() public returns (Inputs inputs) {
+        vm.broadcast();
+        inputs = new Inputs();
+    }
+}

packages/contracts/src/Caller.sol

@@ -1,11 +1,11 @@
 // SPDX-License-Identifier: MIT
 pragma solidity ^0.8.0;
 
-import './Inputs.sol';
+import {Inputs} from "./Inputs.sol";
 
 // Only used for testing
 contract Caller {
-    Inputs inputs;
+    Inputs internal inputs;
 
     constructor(address inputsContract) {
         inputs = Inputs(inputsContract);

packages/contracts/test/Inputs.t.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.13;
+
+import {Test} from "forge-std/Test.sol";
+import {Inputs} from "../src/Inputs.sol";
+import {Caller} from "../src/Caller.sol";
+
+contract InputsTest is Test {
+    bytes private constant RANDOM_BYTES = "0x12345678907654321234567890987654321234567890987654";
+    address private constant BOB = address(0xb0b);
+    Inputs private inputs;
+    Caller private caller;
+
+    event BatchAppended(address sender);
+
+    function setUp() public {
+        inputs = new Inputs();
+        caller = new Caller(address(inputs));
+    }
+
+    function testEventBatchAppended() public {
+        // should emit BatchAppended event.
+        // expect address `bob` to be emitted.
+        vm.prank(BOB, BOB);
+        vm.expectEmit();
+        emit BatchAppended(BOB);
+        inputs.appendBatch(RANDOM_BYTES);
+    }
+
+    function testRevertCaller() public {
+        // should revert if called from a contract
+        vm.expectRevert();
+        caller.appendBatch(RANDOM_BYTES);
+    }
+}