adds amm compatability and calls sync() on all liquidity pools after …

src/core/ElasticDAO.sol

@@ -2,15 +2,18 @@
 pragma solidity 0.7.2;
 pragma experimental ABIEncoderV2;
 
+import '../interfaces/IUniswapV2Pair.sol';
+
 import '../libraries/ElasticMath.sol';
 
 import '../models/DAO.sol';
 import '../models/Ecosystem.sol';
 import '../models/Token.sol';
 
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 import '@pie-dao/proxy/contracts/PProxy.sol';
+import 'hardhat/console.sol';
 
 /**
  * @dev The ElasticDAO contract outlines and defines all the functionality
@@ -23,6 +26,7 @@ contract ElasticDAO is ReentrancyGuard {
   address public ecosystemModelAddress;
   address public controller;
   address[] public summoners;
+  address[] public liquidityPools;
   bool public initialized;
 
   event ElasticGovernanceTokenDeployed(address indexed tokenAddress);
@@ -35,6 +39,8 @@ contract ElasticDAO is ReentrancyGuard {
     uint256 actualAmount
   );
   event JoinDAO(address indexed memberAddress, uint256 shareAmount, uint256 ethAmount);
+  event LiquidityPoolAdded(address indexed poolAddress);
+  event LiquidityPoolRemoved(address indexed poolAddress);
   event SeedDAO(address indexed summonerAddress, uint256 amount);
   event SummonedDAO(address indexed summonedBy);
 
@@ -129,6 +135,17 @@ contract ElasticDAO is ReentrancyGuard {
     require(success, 'ElasticDAO: Build DAO Failed');
   }
 
+  function addLiquidityPool(address _poolAddress)
+    external
+    onlyController
+    nonReentrant
+    returns (bool)
+  {
+    liquidityPools.push(_poolAddress);
+
+    emit LiquidityPoolAdded(_poolAddress);
+  }
+
   /**
    * @notice initializes the token of the DAO
    *
@@ -199,6 +216,14 @@ contract ElasticDAO is ReentrancyGuard {
     emit ExitDAO(msg.sender, _deltaLambda, ethToBeTransfered);
   }
 
+  /**
+   * @notice this function returns the length of the liquidity pools array
+   *
+   */
+  function getLiquidityPoolCount() public view returns (uint256) {
+    return liquidityPools.length;
+  }
+
   /**
    * @notice this function is used to join the DAO after it has been summoned
    * Joining the DAO is syntactically equal to minting _deltaLambda for the function caller.
@@ -253,6 +278,10 @@ contract ElasticDAO is ReentrancyGuard {
     bool success = tokenContract.mintShares(msg.sender, token.maxLambdaPurchase);
     require(success, 'ElasticDAO: Mint Shares Failed during Join');
 
+    for (uint256 i = 0; i < liquidityPools.length; i += 1) {
+      IUniswapV2Pair(liquidityPools[i]).sync();
+    }
+
     // return extra ETH
     if (success && msg.value > deltaE) {
       (success, ) = msg.sender.call{ value: SafeMath.sub(msg.value, deltaE) }('');
@@ -298,6 +327,22 @@ contract ElasticDAO is ReentrancyGuard {
     }
   }
 
+  function removeLiquidityPool(address _poolAddress)
+    external
+    onlyController
+    nonReentrant
+    returns (bool)
+  {
+    for (uint256 i = 0; i < liquidityPools.length; i += 1) {
+      if (liquidityPools[i] == _poolAddress) {
+        liquidityPools[i] = liquidityPools[liquidityPools.length - 1];
+        liquidityPools.pop();
+      }
+    }
+
+    emit LiquidityPoolRemoved(_poolAddress);
+  }
+
   /**
    * @notice rewards @param _addresess with @param _amounts respectively
    *

src/core/ElasticDAOFactory.sol

@@ -5,7 +5,7 @@ pragma experimental ABIEncoderV2;
 import './ElasticDAO.sol';
 
 import '../models/Ecosystem.sol';
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 import '@pie-dao/proxy/contracts/PProxy.sol';
 

src/interfaces/IUniswapV2Pair.sol

@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: GPLv3
+pragma solidity 0.7.2;
+
+interface IUniswapV2Pair {
+  function sync() external;
+}

src/models/DAO.sol

@@ -2,7 +2,7 @@
 pragma solidity 0.7.2;
 pragma experimental ABIEncoderV2;
 
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 import './Ecosystem.sol';
 import './EternalModel.sol';

src/models/Ecosystem.sol

@@ -2,7 +2,7 @@
 pragma solidity 0.7.2;
 pragma experimental ABIEncoderV2;
 
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 import './EternalModel.sol';
 

src/models/Token.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPLv3
 pragma solidity 0.7.2;
 pragma experimental ABIEncoderV2;
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 import './Ecosystem.sol';
 import './EternalModel.sol';

src/models/TokenHolder.sol

@@ -2,7 +2,7 @@
 pragma solidity 0.7.2;
 pragma experimental ABIEncoderV2;
 
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 import './Ecosystem.sol';
 import './EternalModel.sol';

src/tokens/ElasticGovernanceToken.sol

@@ -12,7 +12,7 @@ import '../models/Ecosystem.sol';
 import '../models/Token.sol';
 import '../models/TokenHolder.sol';
 
-import "@openzeppelin/contracts/utils/ReentrancyGuard.sol";
+import '@openzeppelin/contracts/utils/ReentrancyGuard.sol';
 
 /**
  * @dev ElasticGovernanceToken contract outlines and defines all the functionality