// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;

import {Test} from "forge-std/Test.sol";
import {CheckpointLeaf} from "../../contracts/mainnet-checkpoint/libraries/CheckpointLeaf.sol";

contract CheckpointLeafTest is Test {
    function testBuildMerkleRoot_twoLeaves() public pure {
        CheckpointLeaf.PaymentLeafV1 memory a = _leaf(keccak256("a"));
        CheckpointLeaf.PaymentLeafV1 memory b = _leaf(keccak256("b"));
        bytes32[] memory hashes = new bytes32[](2);
        hashes[0] = CheckpointLeaf.paymentLeafV1(138, a);
        hashes[1] = CheckpointLeaf.paymentLeafV1(138, b);
        bytes32 root = CheckpointLeaf.buildMerkleRoot(hashes);
        assertTrue(root != bytes32(0));
    }

    function testVerifyMerkle_singleLeaf() public pure {
        CheckpointLeaf.PaymentLeafV1 memory a = _leaf(keccak256("solo"));
        bytes32 leaf = CheckpointLeaf.paymentLeafV1(138, a);
        bytes32[] memory proof = new bytes32[](0);
        assertTrue(CheckpointLeaf.verifyMerkle(leaf, leaf, proof));
    }

    function _leaf(bytes32 txHash) private pure returns (CheckpointLeaf.PaymentLeafV1 memory) {
        return CheckpointLeaf.PaymentLeafV1({
            txHash: txHash,
            from: address(1),
            to: address(2),
            value: 1,
            blockNumber: 1,
            blockTimestamp: 1,
            gasUsed: 21000,
            success: true
        });
    }
}