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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

import "@hyperlane-xyz/core/contracts/libs/TypeCasts.sol";
import "../interfaces/IMetalayerRecipient.sol";

import {BaseProver} from "./BaseProver.sol";
import {Semver} from "../libs/Semver.sol";

/**
 * @title MetalayerProver
 * @author Constellation Labs
 * @notice A simple prover implementation for Eco's routing of Metalayer-settled intents.
 * @dev This implementation is designed to be used as a prover for Eco Protocol intents that are routed through Metalayer,
 * and is not designed to be used as a general-purpose prover for Metalayer intents out of the context of Eco Protocol.
 */
contract MetalayerProver is IMetalayerRecipient, BaseProver, Semver {
    using TypeCasts for bytes32;

    ProofType public constant PROOF_TYPE = ProofType.Metalayer;

    /**
     * @notice emitted on an attempt to register a claimant on an intent that has already been proven and has a claimant
     * @dev this is an event rather than an error because the expected behavior is to ignore one intent but continue with the rest
     * @param _intentHash the hash of the intent
     */
    event IntentAlreadyProven(bytes32 _intentHash);

    /**
     * @notice emitted on an unauthorized call to the handle() method
     * @param _sender the address that called the handle() method
     */
    error UnauthorizedHandle(address _sender);

    /**
     * @notice emitted when the handle() call is a result of an unauthorized dispatch() call on another chain's Router
     * @param _sender the address that called the dispatch() method
     */
    error UnauthorizedDispatch(address _sender);

    /// @notice the address of the local MetalayerRouter
    address public immutable ROUTER;

    /// @notice the address of the Inbox contract
    address public immutable INBOX;

    /**
     * @notice Initializes the addresses of the local MetalayerRouter and Eco's Inbox contract
     * @param _router the address of the local MetalayerRouter
     * @param _inbox the address of the Inbox contract
     */
    constructor(address _router, address _inbox) {
        ROUTER = _router;
        INBOX = _inbox;
    }

    /**
     * @notice Handles intents from the MetalayerRouter
     * @param -_chainId the chain ID of the intent's origin chain (not used)
     * @param _sender the address that called the dispatch() method
     * @param _message the write call data (message body)
     * @param -_reads array of read operations performed (not used)
     * @param -_readResults results of the read operations (not used)
     * @dev This function is designed to be called by the MetalayerRouter on the local chain.
     */
    function handle(
        uint32,
        address _sender,
        bytes calldata _message,
        ReadOperation[] calldata,
        bytes[] calldata
    ) external payable {
        if (ROUTER != msg.sender) {
            revert UnauthorizedHandle(msg.sender);
        }

        if (INBOX != _sender) {
            revert UnauthorizedDispatch(_sender);
        }

        (bytes32[] memory hashes, address[] memory claimants) = abi.decode(
            _message,
            (bytes32[], address[])
        );

        for (uint256 i = 0; i < hashes.length; i++) {
            (bytes32 intentHash, address claimant) = (hashes[i], claimants[i]);
            if (provenIntents[intentHash] != address(0)) {
                emit IntentAlreadyProven(intentHash);
            } else {
                provenIntents[intentHash] = claimant;
                emit IntentProven(intentHash, claimant);
            }
        }
    }

    /**
     * @notice Returns the proof type used by this prover
     * @return the proof type
     */
    function getProofType() external pure override returns (ProofType) {
        return PROOF_TYPE;
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.6.11;

library TypeCasts {
    // alignment preserving cast
    function addressToBytes32(address _addr) internal pure returns (bytes32) {
        return bytes32(uint256(uint160(_addr)));
    }

    // alignment preserving cast
    function bytes32ToAddress(bytes32 _buf) internal pure returns (address) {
        return address(uint160(uint256(_buf)));
    }
}

// SPDX-License-Identifier: MIT OR Apache-2.0
pragma solidity >=0.6.11;

/**
 * @notice Struct defining a cross-chain read operation
 * @param sourceChainId Domain of the chain to read from
 * @param sourceContract Contract address to read from as address
 * @param callDataLength Length of the call data
 * @param callData The encoded function call data
 */
struct ReadOperation {
    uint32 sourceChainId;
    address sourceContract;
    bytes callData;
}

interface IMetalayerRecipient {
    // Here, _readResults will be the results of every read in the message, in order. This will be input by the relayer.
    function handle(
        uint32 _chainId,
        address _sender,
        bytes calldata _message, // The body of the Metalayer message, or writeCallData.
        ReadOperation[] calldata _reads,
        bytes[] calldata _readResults
    ) external payable;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

import {ISemver} from "./ISemver.sol";

/**
 * @title IProver
 * @notice Interface for proving intent fulfillment
 * @dev Defines required functionality for proving intent execution with different
 * proof mechanisms (storage or Hyperlane)
 */
interface IProver is ISemver {
    /**
     * @notice Types of proofs that can validate intent fulfillment
     * @param Storage Traditional storage-based proof mechanism
     * @param Hyperlane Proof using Hyperlane's cross-chain messaging
     */
    enum ProofType {
        Storage,
        Hyperlane,
        Metalayer
    }

    /**
     * @notice Emitted when an intent is successfully proven
     * @param _hash Hash of the proven intent
     * @param _claimant Address eligible to claim the intent's rewards
     */
    event IntentProven(bytes32 indexed _hash, address indexed _claimant);

    /**
     * @notice Gets the proof mechanism type used by this prover
     * @return ProofType enum indicating the prover's mechanism
     */
    function getProofType() external pure returns (ProofType);

    /**
     * @notice Gets the address eligible to claim rewards for a proven intent
     * @param intentHash Hash of the intent to query
     * @return Address of the claimant, or zero address if unproven
     */
    function getIntentClaimant(
        bytes32 intentHash
    ) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.26;

/**
 * @title Semver Interface
 * @dev An interface for a contract that has a version
 */
interface ISemver {
    function version() external pure returns (string memory);
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.26;

import {ISemver} from "../interfaces/ISemver.sol";

abstract contract Semver is ISemver {
    function version() external pure returns (string memory) {
        return "1.8.14-e2c12e7";
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

import {IProver} from "../interfaces/IProver.sol";

/**
 * @title BaseProver
 * @notice Base implementation for intent proving contracts
 * @dev Provides core storage and functionality for tracking proven intents
 * and their claimants
 */
abstract contract BaseProver is IProver {
    /**
     * @notice Mapping from intent hash to address eligible to claim rewards
     * @dev Zero address indicates intent hasn't been proven
     */
    mapping(bytes32 => address) public provenIntents;

    /**
     * @notice Gets the address eligible to claim rewards for a given intent
     * @param intentHash Hash of the intent to query
     * @return Address of the claimant, or zero address if unproven
     */
    function getIntentClaimant(
        bytes32 intentHash
    ) external view override returns (address) {
        return provenIntents[intentHash];
    }
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "evmVersion": "paris",
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"_router","type":"address"},{"internalType":"address","name":"_inbox","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"}],"name":"UnauthorizedDispatch","type":"error"},{"inputs":[{"internalType":"address","name":"_sender","type":"address"}],"name":"UnauthorizedHandle","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"bytes32","name":"_intentHash","type":"bytes32"}],"name":"IntentAlreadyProven","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"_hash","type":"bytes32"},{"indexed":true,"internalType":"address","name":"_claimant","type":"address"}],"name":"IntentProven","type":"event"},{"inputs":[],"name":"INBOX","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROOF_TYPE","outputs":[{"internalType":"enum IProver.ProofType","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ROUTER","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"intentHash","type":"bytes32"}],"name":"getIntentClaimant","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getProofType","outputs":[{"internalType":"enum IProver.ProofType","name":"","type":"uint8"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint32","name":"","type":"uint32"},{"internalType":"address","name":"_sender","type":"address"},{"internalType":"bytes","name":"_message","type":"bytes"},{"components":[{"internalType":"uint32","name":"sourceChainId","type":"uint32"},{"internalType":"address","name":"sourceContract","type":"address"},{"internalType":"bytes","name":"callData","type":"bytes"}],"internalType":"struct ReadOperation[]","name":"","type":"tuple[]"},{"internalType":"bytes[]","name":"","type":"bytes[]"}],"name":"handle","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"name":"provenIntents","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"version","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"}]

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000000000000000000000000c41de2a4243e4304813c36cd8952366dcb36106a000000000000000000000000578ccad6a274fde97c09d439e1e94d4fce33328e

-----Decoded View---------------
Arg [0] : _router (address): 0xC41de2A4243e4304813c36Cd8952366DCb36106a
Arg [1] : _inbox (address): 0x578CCAd6a274fDE97c09D439e1E94D4FcE33328e

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000c41de2a4243e4304813c36cd8952366dcb36106a
Arg [1] : 000000000000000000000000578ccad6a274fde97c09d439e1e94d4fce33328e