pragma solidity ^0.5.16;

import "../BaseMigration.sol";
import "../AddressResolver.sol";
import "../Proxy.sol";
import "../legacy/LegacyTokenState.sol";
import "../RewardEscrow.sol";
import "../RewardsDistribution.sol";

interface ISynthetixNamedContract {
    // solhint-disable func-name-mixedcase
    function CONTRACT_NAME() external view returns (bytes32);
}

// solhint-disable contract-name-camelcase
contract Migration_AcrabPatch1 is BaseMigration {
    // https://etherscan.io/address/0xEb3107117FEAd7de89Cd14D463D340A2E6917769;
    address public constant OWNER = 0xEb3107117FEAd7de89Cd14D463D340A2E6917769;

    // ----------------------------
    // EXISTING SYNTHETIX CONTRACTS
    // ----------------------------

    // https://etherscan.io/address/0x823bE81bbF96BEc0e25CA13170F5AaCb5B79ba83
    AddressResolver public constant addressresolver_i = AddressResolver(0x823bE81bbF96BEc0e25CA13170F5AaCb5B79ba83);
    // https://etherscan.io/address/0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F
    Proxy public constant proxysynthetix_i = Proxy(0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F);
    // https://etherscan.io/address/0x5b1b5fEa1b99D83aD479dF0C222F0492385381dD
    LegacyTokenState public constant tokenstatesynthetix_i = LegacyTokenState(0x5b1b5fEa1b99D83aD479dF0C222F0492385381dD);
    // https://etherscan.io/address/0xb671F2210B1F6621A2607EA63E6B2DC3e2464d1F
    RewardEscrow public constant rewardescrow_i = RewardEscrow(0xb671F2210B1F6621A2607EA63E6B2DC3e2464d1F);
    // https://etherscan.io/address/0x94433f0DA8B5bfb473Ea8cd7ad10D9c8aef4aB7b
    RewardsDistribution public constant rewardsdistribution_i =
        RewardsDistribution(0x94433f0DA8B5bfb473Ea8cd7ad10D9c8aef4aB7b);

    // ----------------------------------
    // NEW CONTRACTS DEPLOYED TO BE ADDED
    // ----------------------------------

    // https://etherscan.io/address/0xc5f0b4194455e0C175ab68C501400e46C7203504
    address public constant new_Synthetix_contract = 0xc5f0b4194455e0C175ab68C501400e46C7203504;

    constructor() public BaseMigration(OWNER) {}

    function contractsRequiringOwnership() public pure returns (address[] memory contracts) {
        contracts = new address[](5);
        contracts[0] = address(addressresolver_i);
        contracts[1] = address(proxysynthetix_i);
        contracts[2] = address(tokenstatesynthetix_i);
        contracts[3] = address(rewardescrow_i);
        contracts[4] = address(rewardsdistribution_i);
    }

    function migrate() external onlyOwner {
        // ACCEPT OWNERSHIP for all contracts that require ownership to make changes
        acceptAll();

        // MIGRATION
        // Import all new contracts into the address resolver;
        addressresolver_importAddresses_0();
        // Rebuild the resolver caches in all MixinResolver contracts - batch 1;
        addressresolver_rebuildCaches_1();
        // Rebuild the resolver caches in all MixinResolver contracts - batch 2;
        addressresolver_rebuildCaches_2();
        // Ensure the SNX proxy has the correct Synthetix target set;
        proxysynthetix_i.setTarget(Proxyable(new_Synthetix_contract));
        // Ensure the Synthetix contract can write to its TokenState contract;
        tokenstatesynthetix_i.setAssociatedContract(new_Synthetix_contract);
        // Ensure the legacy RewardEscrow contract is connected to the Synthetix contract;
        rewardescrow_i.setSynthetix(ISynthetix(new_Synthetix_contract));
        // Ensure the RewardsDistribution has Synthetix set as its authority for distribution;
        rewardsdistribution_i.setAuthority(new_Synthetix_contract);

        // NOMINATE OWNERSHIP back to owner for aforementioned contracts
        nominateAll();
    }

    function acceptAll() internal {
        address[] memory contracts = contractsRequiringOwnership();
        for (uint i = 0; i < contracts.length; i++) {
            Owned(contracts[i]).acceptOwnership();
        }
    }

    function nominateAll() internal {
        address[] memory contracts = contractsRequiringOwnership();
        for (uint i = 0; i < contracts.length; i++) {
            returnOwnership(contracts[i]);
        }
    }

    function addressresolver_importAddresses_0() internal {
        bytes32[] memory addressresolver_importAddresses_names_0_0 = new bytes32[](1);
        addressresolver_importAddresses_names_0_0[0] = bytes32("Synthetix");
        address[] memory addressresolver_importAddresses_destinations_0_1 = new address[](1);
        addressresolver_importAddresses_destinations_0_1[0] = address(new_Synthetix_contract);
        addressresolver_i.importAddresses(
            addressresolver_importAddresses_names_0_0,
            addressresolver_importAddresses_destinations_0_1
        );
    }

    function addressresolver_rebuildCaches_1() internal {
        MixinResolver[] memory addressresolver_rebuildCaches_destinations_1_0 = new MixinResolver[](20);
        addressresolver_rebuildCaches_destinations_1_0[0] = MixinResolver(0xFAd53Cc9480634563E8ec71E8e693Ffd07981d38);
        addressresolver_rebuildCaches_destinations_1_0[1] = MixinResolver(0x8e9757479D5ad4E7f9d951B60d39F5220b893d6c);
        addressresolver_rebuildCaches_destinations_1_0[2] = MixinResolver(0xf79603a71144e415730C1A6f57F366E4Ea962C00);
        addressresolver_rebuildCaches_destinations_1_0[3] = MixinResolver(0xaeA0065E146FD75Dc24465961a583827284D405a);
        addressresolver_rebuildCaches_destinations_1_0[4] = MixinResolver(0xab4688E54A216aB3813438D30603Bf855648AF8d);
        addressresolver_rebuildCaches_destinations_1_0[5] = MixinResolver(0x62922670313bf6b41C580143d1f6C173C5C20019);
        addressresolver_rebuildCaches_destinations_1_0[6] = MixinResolver(0x39Ea01a0298C315d149a490E34B59Dbf2EC7e48F);
        addressresolver_rebuildCaches_destinations_1_0[7] = MixinResolver(0x94f864e55c77E07C2C7BF7bFBc334b7a8123442A);
        addressresolver_rebuildCaches_destinations_1_0[8] = MixinResolver(new_Synthetix_contract);
        addressresolver_rebuildCaches_destinations_1_0[9] = MixinResolver(0x83105D7CDd2fd9b8185BFF1cb56bB1595a618618);
        addressresolver_rebuildCaches_destinations_1_0[10] = MixinResolver(0xd1cad1A569E70d2Df4C8ed43d3cC93DBE16285dE);
        addressresolver_rebuildCaches_destinations_1_0[11] = MixinResolver(0x10A5F7D9D65bCc2734763444D4940a31b109275f);
        addressresolver_rebuildCaches_destinations_1_0[12] = MixinResolver(0xa8E31E3C38aDD6052A9407298FAEB8fD393A6cF9);
        addressresolver_rebuildCaches_destinations_1_0[13] = MixinResolver(0xE1cc2332852B2Ac0dA59A1f9D3051829f4eF3c1C);
        addressresolver_rebuildCaches_destinations_1_0[14] = MixinResolver(0xfb020CA7f4e8C4a5bBBe060f59a249c6275d2b69);
        addressresolver_rebuildCaches_destinations_1_0[15] = MixinResolver(0xdc883b9d9Ee16f74bE08826E68dF4C9D9d26e8bD);
        addressresolver_rebuildCaches_destinations_1_0[16] = MixinResolver(0xBb5b03E920cF702De5A3bA9Fc1445aF4B3919c88);
        addressresolver_rebuildCaches_destinations_1_0[17] = MixinResolver(0xdAe6C79c46aB3B280Ca28259000695529cbD1339);
        addressresolver_rebuildCaches_destinations_1_0[18] = MixinResolver(0x1cB004a8e84a5CE95C1fF895EE603BaC8EC506c7);
        addressresolver_rebuildCaches_destinations_1_0[19] = MixinResolver(0x5D4C724BFe3a228Ff0E29125Ac1571FE093700a4);
        addressresolver_i.rebuildCaches(addressresolver_rebuildCaches_destinations_1_0);
    }

    function addressresolver_rebuildCaches_2() internal {
        MixinResolver[] memory addressresolver_rebuildCaches_destinations_2_0 = new MixinResolver[](2);
        addressresolver_rebuildCaches_destinations_2_0[0] = MixinResolver(0x07C1E81C345A7c58d7c24072EFc5D929BD0647AD);
        addressresolver_rebuildCaches_destinations_2_0[1] = MixinResolver(0x7A3d898b717e50a96fd8b232E9d15F0A547A7eeb);
        addressresolver_i.rebuildCaches(addressresolver_rebuildCaches_destinations_2_0);
    }
}