set up template for hook

.gitmodules

@@ -1,3 +1,9 @@
 [submodule "lib/forge-std"]
 	path = lib/forge-std
 	url = https://github.com/foundry-rs/forge-std
+[submodule "lib/v4-periphery"]
+	path = lib/v4-periphery
+	url = https://github.com/Uniswap/v4-periphery
+[submodule "lib/v4-core"]
+	path = lib/v4-core
+	url = https://github.com/Uniswap/v4-core

.vscode/settings.json

@@ -0,0 +1,4 @@
+{
+    "solidity.compileUsingRemoteVersion": "v0.8.26+commit.8a97fa7a",
+    "solidity.defaultCompiler": "localNodeModule"
+}

foundry.toml

@@ -3,4 +3,10 @@ src = "src"
 out = "out"
 libs = ["lib"]
 
+solc_version = '0.8.26'
+evm_version = "cancun"
+optimizer_runs = 800
+via_ir = false
+ffi = true
+
 # See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options

remappings.txt

@@ -0,0 +1,14 @@
+@ensdomains/=lib/v4-periphery/lib/v4-core/node_modules/@ensdomains/
+@openzeppelin/=lib/v4-periphery/lib/v4-core/lib/openzeppelin-contracts/
+@openzeppelin/contracts/=lib/v4-periphery/lib/v4-core/lib/openzeppelin-contracts/contracts/
+@uniswap/v4-core/=lib/v4-periphery/lib/v4-core/
+ds-test/=lib/v4-periphery/lib/v4-core/lib/forge-std/lib/ds-test/src/
+erc4626-tests/=lib/v4-periphery/lib/v4-core/lib/openzeppelin-contracts/lib/erc4626-tests/
+forge-gas-snapshot/=lib/v4-periphery/lib/forge-gas-snapshot/src/
+forge-std/=lib/forge-std/src/
+hardhat/=lib/v4-periphery/lib/v4-core/node_modules/hardhat/
+openzeppelin-contracts/=lib/v4-periphery/lib/v4-core/lib/openzeppelin-contracts/
+permit2/=lib/v4-periphery/lib/permit2/
+solmate/=lib/v4-periphery/lib/v4-core/lib/solmate/
+v4-core/=lib/v4-periphery/lib/v4-core/src/
+v4-periphery/=lib/v4-periphery/

src/JITHook.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.26;
+
+import {BaseHook} from "v4-periphery/src/base/hooks/BaseHook.sol";
+import {IPoolManager} from "v4-core/interfaces/IPoolManager.sol";
+import {Hooks} from "v4-core/libraries/Hooks.sol";
+
+contract JITHook is BaseHook {
+    constructor(IPoolManager _manager) BaseHook(_manager) {}
+
+    function getHookPermissions()
+        public
+        pure
+        override
+        returns (Hooks.Permissions memory)
+    {
+        return
+            Hooks.Permissions({
+                beforeInitialize: false,
+                afterInitialize: false,
+                beforeAddLiquidity: false,
+                afterAddLiquidity: false,
+                beforeRemoveLiquidity: false,
+                afterRemoveLiquidity: false,
+                beforeSwap: true,
+                afterSwap: true,
+                beforeDonate: false,
+                afterDonate: false,
+                beforeSwapReturnDelta: false,
+                afterSwapReturnDelta: false,
+                afterAddLiquidityReturnDelta: false,
+                afterRemoveLiquidityReturnDelta: false
+            });
+    }
+}