feat: add files

contracts/utils/src/ArenaController.sol

@@ -0,0 +1,62 @@
+pragma solidity ^0.8.10;
+
+import {PoolManager} from "v4-core/PoolManager.sol";
+import {PoolModifyLiquidityTest} from "v4-core/test/PoolModifyLiquidityTest.sol";
+import {ArenaToken} from "./ArenaToken.sol";
+import {PoolKey} from "v4-core/types/PoolKey.sol";
+import {Currency} from "v4-core/types/Currency.sol";
+import {IHooks} from "v4-core/interfaces/IHooks.sol";
+import {IPoolManager} from "v4-core/interfaces/IPoolManager.sol";
+
+contract ArenaController {
+    PoolManager immutable poolManager;
+    PoolModifyLiquidityTest immutable router;
+
+    ArenaToken immutable currency0;
+    ArenaToken immutable currency1;
+
+    PoolKey public poolKey;
+
+    constructor(uint256 fee) {
+        poolManager = new PoolManager(fee);
+        router = new PoolModifyLiquidityTest(poolManager);
+
+        currency0 = new ArenaToken("currency0", "c0", 18);
+        currency1 = new ArenaToken("currency1", "c1", 18);
+
+        if (currency0 > currency1) {
+            (currency0, currency1) = (currency1, currency0);
+        }
+    }
+
+    function setPool(uint24 poolFee, int24 tickSpacing, IHooks hooks, uint160 sqrtPriceX96, bytes memory hookData) public {
+        poolKey = PoolKey ({
+            currency0: Currency.wrap(address(currency0)),
+            currency1: Currency.wrap(address(currency1)),
+            fee: poolFee,
+            tickSpacing: tickSpacing,
+            hooks: hooks
+        });
+
+        poolManager.initialize(poolKey, sqrtPriceX96, hookData);
+    }
+
+    function addLiquidity(int256 liquidityDelta, int24 tickLower, int24 tickUpper) public {
+        if (liquidityDelta > 0) {
+            require(currency0.mint(address(this), uint256(liquidityDelta)), "Minting currency0 failed");
+            require(currency1.mint(address(this), uint256(liquidityDelta)), "Minting currency1 failed");
+        }
+
+        require(currency0.approve(address(router), type(uint256).max), "Approval for currency0 failed");
+        require(currency1.approve(address(router), type(uint256).max), "Approval for currency1 failed");
+
+        IPoolManager.ModifyLiquidityParams memory params = IPoolManager.ModifyLiquidityParams({
+            tickLower: tickLower,
+            tickUpper: tickUpper,
+            liquidityDelta: liquidityDelta,
+            salt: ""
+        });
+
+        router.modifyLiquidity(poolKey, params, "");
+    }
+}