Merge pull request #46 from Instadapp/feat/instadapp-governance-connector

Add Instadapp governance connector

contracts/mainnet/connectors/INST/events.sol

@@ -0,0 +1,6 @@
+pragma solidity ^0.7.0;
+
+contract Events {
+    event LogVoteCast(uint256 proposalId, uint256 support, string reason);
+    event LogDelegate(address delegatee);
+}

contracts/mainnet/connectors/INST/helpers.sol

@@ -0,0 +1,18 @@
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+import { DSMath } from "../../common/math.sol";
+import { Basic } from "../../common/basic.sol";
+import { InstaTokenInterface, InstaGovernorInterface } from "./interface.sol";
+
+abstract contract Helpers is DSMath, Basic {
+    /**
+     * @dev InstaGovernorBravo
+     */
+    InstaGovernorInterface internal constant instaGovernor = InstaGovernorInterface(0x0204Cd037B2ec03605CFdFe482D8e257C765fA1B);
+
+    /**
+     * @dev INST Token
+     */
+    InstaTokenInterface internal constant instToken = InstaTokenInterface(0x6f40d4A6237C257fff2dB00FA0510DeEECd303eb);
+}

contracts/mainnet/connectors/INST/interface.sol

@@ -0,0 +1,10 @@
+pragma solidity ^0.7.0;
+
+interface InstaGovernorInterface {
+    function castVoteWithReason(uint proposalId, uint8 support, string calldata reason) external;
+}
+
+interface InstaTokenInterface {
+    function delegate(address delegatee) external;
+    function delegates(address) external view returns(address);
+}

contracts/mainnet/connectors/INST/main.sol

@@ -0,0 +1,60 @@
+pragma solidity ^0.7.0;
+pragma experimental ABIEncoderV2;
+
+/**
+ * @title Instadapp Governance.
+ * @dev Governance.
+ */
+import { TokenInterface } from "../../common/interfaces.sol";
+import { Stores } from "../../common/stores.sol";
+import { Helpers } from "./helpers.sol";
+import { Events } from "./events.sol";
+
+abstract contract Resolver is Events, Helpers {
+
+    /**
+     * @dev Delegate votes.
+     * @notice Delegating votes to delegatee.
+     * @param delegatee The address to delegate the votes.
+    */
+    function delegate(address delegatee) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        require(instToken.delegates(address(this)) != delegatee, "Already delegated to same delegatee.");
+
+        instToken.delegate(delegatee);
+
+        _eventName = "LogDelegate(address)";
+        _eventParam = abi.encode(delegatee);
+    }
+
+
+    /**
+     * @dev Cast vote.
+      * @notice Casting vote for a proposal
+      * @param proposalId The id of the proposal to vote on
+      * @param support The support value for the vote. 0=against, 1=for, 2=abstain
+    */
+    function voteCast(uint256 proposalId, uint256 support) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        instaGovernor.castVoteWithReason(proposalId, uint8(support), "");
+
+        _eventName = "LogVoteCast(uint256,uint256,string)";
+        _eventParam = abi.encode(proposalId, support, "");
+    }
+
+    /**
+     * @dev Cast vote with reason.
+      * @notice Casting vote for a proposal
+      * @param proposalId The id of the proposal to vote on
+      * @param support The support value for the vote. 0=against, 1=for, 2=abstain
+      * @param reason The reason given for the vote
+    */
+    function voteCastWithReason(uint256 proposalId, uint256 support, string calldata reason) external payable returns (string memory _eventName, bytes memory _eventParam) {
+        instaGovernor.castVoteWithReason(proposalId, uint8(support), reason);
+
+        _eventName = "LogVoteCast(uint256,uint256,string)";
+        _eventParam = abi.encode(proposalId, support, reason);
+    }
+}
+
+contract ConnectV2InstadappGovernanceBravo is Resolver {
+    string public constant name = "Instadapp-governance-bravo-v1";
+}

docs/connectors.json

@@ -19,7 +19,8 @@
     "COMPOUND-IMPORT-B": "0xdA101870ca6136539628F28041E1B55baf4EB6C0",
     "INSTAPOOL-A": "0x5806Af7AB22E2916fA582Ff05731Bf7C682387B2",
     "MAKERDAO-CLAIM-A": "0x2f8cBE650af98602a215b6482F2aD60893C5A4E8",
-    "WETH-A": "0x22075fa719eFb02Ca3cF298AFa9C974B7465E5D3"
+    "WETH-A": "0x22075fa719eFb02Ca3cF298AFa9C974B7465E5D3",
+    "INST-A": "0x52C2C4a0db049255fF345EB9D3Fb1f555b7a924A"
   },
   "137" : {
     "AAVE-V2-A": "0xE84d8010Afc3663919F44685cB53ED88866da3eE",