feat: fee collector

.github/workflows/contracts_test.yml

@@ -0,0 +1,47 @@
+name: Contracts CI
+
+on:
+  push:
+    paths:
+      - 'contracts/**'
+  pull_request:
+    paths:
+      - 'contracts/**'
+  workflow_dispatch:
+
+env:
+  FOUNDRY_PROFILE: ci
+
+jobs:
+  check:
+    name: Foundry project
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: contracts
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+
+      - name: Show Forge version
+        run: |
+          forge --version
+
+      - name: Run Forge fmt
+        run: |
+          forge fmt --check
+        id: fmt
+
+      - name: Run Forge build
+        run: |
+          forge build --sizes
+        id: build
+
+      - name: Run Forge tests
+        run: |
+          forge test -vvv
+        id: test

.gitmodules

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

contracts/.gitignore

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+# Compiler files
+cache/
+out/
+
+# Ignores development broadcast logs
+!/broadcast
+/broadcast/*/31337/
+/broadcast/**/dry-run/
+
+# Docs
+docs/
+
+# Dotenv file
+.env

contracts/README.md

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+## Foundry
+
+**Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.**
+
+Foundry consists of:
+
+-   **Forge**: Ethereum testing framework (like Truffle, Hardhat and DappTools).
+-   **Cast**: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
+-   **Anvil**: Local Ethereum node, akin to Ganache, Hardhat Network.
+-   **Chisel**: Fast, utilitarian, and verbose solidity REPL.
+
+## Documentation
+
+https://book.getfoundry.sh/
+
+## Usage
+
+### Build
+
+```shell
+$ forge build
+```
+
+### Test
+
+```shell
+$ forge test
+```
+
+### Format
+
+```shell
+$ forge fmt
+```
+
+### Gas Snapshots
+
+```shell
+$ forge snapshot
+```
+
+### Anvil
+
+```shell
+$ anvil
+```
+
+### Deploy
+
+```shell
+$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
+```
+
+### Cast
+
+```shell
+$ cast <subcommand>
+```
+
+### Help
+
+```shell
+$ forge --help
+$ anvil --help
+$ cast --help
+```

contracts/foundry.toml

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

contracts/src/FeeVault.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.24;
+
+interface IHypNativeMinter {
+    function transferRemote(uint32 _destination, bytes32 _recipient, uint256 _amount)
+        external
+        payable
+        returns (bytes32 messageId);
+}
+
+contract FeeVault {
+    IHypNativeMinter public immutable hypNativeMinter;
+
+    address public owner;
+    uint32 public destinationDomain;
+    bytes32 public recipientAddress;
+    uint256 public minimumAmount;
+    uint256 public callFee;
+
+    // Split accounting
+    address public otherRecipient;
+    uint256 public bridgeShareBps; // Basis points (0-10000) for bridge share
+
+    event SentToCelestia(uint256 amount, bytes32 recipient, bytes32 messageId);
+    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
+    event RecipientUpdated(uint32 destinationDomain, bytes32 recipientAddress);
+    event MinimumAmountUpdated(uint256 minimumAmount);
+    event CallFeeUpdated(uint256 callFee);
+    event BridgeShareUpdated(uint256 bridgeShareBps);
+    event OtherRecipientUpdated(address otherRecipient);
+    event FundsSplit(uint256 totalNew, uint256 bridgeAmount, uint256 otherAmount);
+
+    modifier onlyOwner() {
+        require(msg.sender == owner, "FeeVault: caller is not the owner");
+        _;
+    }
+
+    constructor(address _hypNativeMinter, address _owner) {
+        hypNativeMinter = IHypNativeMinter(_hypNativeMinter);
+        owner = _owner;
+        bridgeShareBps = 10000; // Default to 100% bridge
+        emit OwnershipTransferred(address(0), _owner);
+    }
+
+    receive() external payable {}
+
+    function sendToCelestia() external payable {
+        require(msg.value >= callFee, "FeeVault: insufficient fee");
+
+        uint256 currentBalance = address(this).balance;
+
+        // Calculate split
+        uint256 bridgeAmount = (currentBalance * bridgeShareBps) / 10000;
+        uint256 otherAmount = currentBalance - bridgeAmount;
+
+        require(bridgeAmount >= minimumAmount, "FeeVault: minimum amount not met");
+
+        emit FundsSplit(currentBalance, bridgeAmount, otherAmount);
+
+        // Send other amount if any
+        if (otherAmount > 0) {
+            require(otherRecipient != address(0), "FeeVault: other recipient not set");
+            (bool success,) = otherRecipient.call{value: otherAmount}("");
+            require(success, "FeeVault: transfer failed");
+        }
+
+        // Bridge the bridge amount
+        bytes32 messageId =
+            hypNativeMinter.transferRemote{value: bridgeAmount}(destinationDomain, recipientAddress, bridgeAmount);
+
+        emit SentToCelestia(bridgeAmount, recipientAddress, messageId);
+    }
+
+    // Admin functions
+
+    function transferOwnership(address newOwner) external onlyOwner {
+        require(newOwner != address(0), "FeeVault: new owner is the zero address");
+        emit OwnershipTransferred(owner, newOwner);
+        owner = newOwner;
+    }
+
+    function setRecipient(uint32 _destinationDomain, bytes32 _recipientAddress) external onlyOwner {
+        destinationDomain = _destinationDomain;
+        recipientAddress = _recipientAddress;
+        emit RecipientUpdated(_destinationDomain, _recipientAddress);
+    }
+
+    function setMinimumAmount(uint256 _minimumAmount) external onlyOwner {
+        minimumAmount = _minimumAmount;
+        emit MinimumAmountUpdated(_minimumAmount);
+    }
+
+    function setCallFee(uint256 _callFee) external onlyOwner {
+        callFee = _callFee;
+        emit CallFeeUpdated(_callFee);
+    }
+
+    function setBridgeShare(uint256 _bridgeShareBps) external onlyOwner {
+        require(_bridgeShareBps <= 10000, "FeeVault: invalid bps");
+        bridgeShareBps = _bridgeShareBps;
+        emit BridgeShareUpdated(_bridgeShareBps);
+    }
+
+    function setOtherRecipient(address _otherRecipient) external onlyOwner {
+        require(_otherRecipient != address(0), "FeeVault: zero address");
+        otherRecipient = _otherRecipient;
+        emit OtherRecipientUpdated(_otherRecipient);
+    }
+}