rename dodo member system

contracts/DODOMemberSystem/impl/MemAggregator.sol

@@ -0,0 +1,57 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+import {Ownable} from "../../lib/Ownable.sol";
+import {SafeMath} from "../../lib/SafeMath.sol";
+import {DecimalMath} from "../../lib/DecimalMath.sol";
+
+interface IMemSource {
+    function getMemLevel(address user) external returns (uint256);
+}
+
+contract MemRegistry is Ownable {
+    using SafeMath for uint256;
+
+    address[] internal _VALID_MEM_SOURCE_LIST_;
+    mapping(address => bool) internal _VALID_MEM_SOURCE_;
+    mapping(address => uint256) internal _MEM_SOURCE_WEIGHT_;
+
+    function getMemLevel(address user) public returns (uint256 memLevel) {
+        for (uint8 i = 0; i < _VALID_MEM_SOURCE_LIST_.length; i++) {
+            address _source = _VALID_MEM_SOURCE_LIST_[i];
+            memLevel = memLevel.add(
+                IMemSource(_source).getMemLevel(user).mul(_MEM_SOURCE_WEIGHT_[_source])
+            );
+        }
+    }
+
+    function setMemSourceWeight(address source, uint256 weight) external onlyOwner {
+        _MEM_SOURCE_WEIGHT_[source] = weight;
+    }
+
+    function addMemSource(address source) external onlyOwner {
+        require(!_VALID_MEM_SOURCE_[source], "SOURCE_ALREADY_EXIST");
+        _VALID_MEM_SOURCE_LIST_.push(source);
+        _VALID_MEM_SOURCE_[source] = true;
+    }
+
+    function removeMemSource(address source) external onlyOwner {
+        require(_VALID_MEM_SOURCE_[source], "SOURCE_NOT_EXIST");
+        for (uint8 i = 0; i <= _VALID_MEM_SOURCE_LIST_.length - 1; i++) {
+            if (_VALID_MEM_SOURCE_LIST_[i] == source) {
+                _VALID_MEM_SOURCE_LIST_[i] = _VALID_MEM_SOURCE_LIST_[_VALID_MEM_SOURCE_LIST_
+                    .length - 1];
+                _VALID_MEM_SOURCE_LIST_.pop();
+                break;
+            }
+        }
+        _VALID_MEM_SOURCE_[source] = false;
+    }
+}