// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
pragma experimental ABIEncoderV2;

import { MockProposal } from "./MockProposal.sol";
import { console2 } from "@forge-std/console2.sol";
import { GovernancePatchUpgrade } from "@root/v4-patch/GovernancePatchUpgrade.sol";

contract TestProxyUpdating is MockProposal {
    function isContract(address _addr) private view returns (bool) {
        uint32 size;
        assembly {
            size := extcodesize(_addr)
        }
        return (size > 0);
    }

    function getAddressFromSlot(address _contract, bytes32 slot) internal view returns (address) {
        bytes32 slotData = vm.load(_contract, slot);
        return address(uint256(slotData));
    }

    function getUpgradeableProxyImplementationAddress(address proxy) internal view returns (address) {
        bytes32 proxyImplementationSlot =
            bytes32(0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc);

        return getAddressFromSlot(proxy, proxyImplementationSlot);
    }

    function getRelayerRegistryImplementationAddress() internal view returns (address) {
        return getUpgradeableProxyImplementationAddress(getRelayerRegistryProxyAddress());
    }

    function getStakingImplementationAddress() internal view returns (address) {
        return getUpgradeableProxyImplementationAddress(getStakingProxyAddress());
    }

    function testGovernanceStakingProxyUpdated() public {
        address stakingProxyAddressBeforeExecution = getStakingProxyAddress();
        console2.log(
            "Staking proxy address before proposal execution: %s", stakingProxyAddressBeforeExecution
        );

        createAndExecuteProposal();

        address stakingProxyAddressAfterExecution = getStakingProxyAddress();
        console2.log("Staking proxy address after proposal execution: %s", stakingProxyAddressAfterExecution);

        require(
            stakingProxyAddressBeforeExecution != stakingProxyAddressAfterExecution,
            "Staking proxy address didn't changed"
        );
        require(isContract(stakingProxyAddressAfterExecution));
    }

    function testGovernanceStakingImplementationUpdated() public {
        address stakingImplementationAddressBeforeExecution = getStakingImplementationAddress();
        console2.log(
            "Staking implementation address before proposal execution: %s",
            stakingImplementationAddressBeforeExecution
        );

        createAndExecuteProposal();

        address stakingImplementationAddressAfterExecution = getStakingImplementationAddress();
        console2.log(
            "Staking implementation address after proposal execution: %s",
            stakingImplementationAddressAfterExecution
        );

        require(
            stakingImplementationAddressBeforeExecution != stakingImplementationAddressAfterExecution,
            "Staking implementation address didn't changed"
        );
        require(isContract(stakingImplementationAddressAfterExecution));
    }

    function testRelayerRegistryImplementationUpdated() public {
        address relayerRegistryImplementationAddressBeforeExecution =
            getRelayerRegistryImplementationAddress();
        console2.log(
            "Relayer registry implementation address before proposal execution: %s",
            relayerRegistryImplementationAddressBeforeExecution
        );

        createAndExecuteProposal();

        address relayerRegistryImplementationAddressAfterExecution = getRelayerRegistryImplementationAddress();
        console2.log(
            "Relayer registry implementation address after proposal execution: %s",
            relayerRegistryImplementationAddressAfterExecution
        );

        require(
            relayerRegistryImplementationAddressBeforeExecution
                != relayerRegistryImplementationAddressAfterExecution,
            "Relayer registry implementation address didn't changed"
        );
        require(isContract(relayerRegistryImplementationAddressAfterExecution));
    }

    function testGovernanceImplementationUpdated() public {
        address governanceImplementationAddressBeforeExecution =
            getUpgradeableProxyImplementationAddress(_governanceAddress);
        console2.log(
            "Governance implementation address before proposal execution: %s",
            governanceImplementationAddressBeforeExecution
        );

        createAndExecuteProposal();

        address governanceImplementationAddressAfterExecution =
            getUpgradeableProxyImplementationAddress(_governanceAddress);
        console2.log(
            "Governance implementation address after proposal execution: %s",
            governanceImplementationAddressAfterExecution
        );

        require(
            governanceImplementationAddressBeforeExecution != governanceImplementationAddressAfterExecution,
            "Governance implementation address didn't changed"
        );
        require(isContract(governanceImplementationAddressAfterExecution));
    }

    function testRelayerRegistryProxyNotUpdated() public {
        address relayerRegistryProxyAddressBeforeExecution = getRelayerRegistryProxyAddress();
        console2.log(
            "Relayer registry proxy before proposal execution: %s", relayerRegistryProxyAddressBeforeExecution
        );

        createAndExecuteProposal();

        address relayerRegistryProxyAddressAfterExecution = getRelayerRegistryProxyAddress();
        console2.log(
            "Relayer registry proxyafter proposal execution: %s", relayerRegistryProxyAddressAfterExecution
        );

        require(
            relayerRegistryProxyAddressBeforeExecution == relayerRegistryProxyAddressAfterExecution,
            "Relayer registry proxy address changed"
        );
    }
}