Merge pull request #274 from Instadapp/uniswap-v3-createpool-func

[Mainnet][Uniswap-v3] Added Create Pool function

contracts/mainnet/connectors/uniswap/v3/events.sol

@@ -32,4 +32,11 @@ contract Events {
     );
 
     event LogBurnPosition(uint256 tokenId);
+
+    event LogcreateAndInitializePool (
+        address tokenA,
+        address tokenB,
+        uint24 fee,
+        int24 initialTick
+    );
 }

contracts/mainnet/connectors/uniswap/v3/helpers.sol

@@ -66,6 +66,27 @@ abstract contract Helpers is DSMath, Basic {
         }
     }
 
+    function _createAndInitializePoolIfNecessary (
+        address tokenA,
+        address tokenB,
+        uint24 fee,
+        int24 initialTick
+    ) internal returns (address pool) {
+        (TokenInterface token0Contract_, TokenInterface token1Contract_) = changeEthAddress(
+            tokenA,
+            tokenB
+        );
+        
+        (address token0_, address token1_) =  sortTokenAddress(address(token0Contract_), address(token1Contract_));
+
+        return nftManager.createAndInitializePoolIfNecessary(
+            token0_,
+            token1_,
+            fee,
+            TickMath.getSqrtRatioAtTick(initialTick)
+        );
+    }
+
     /**
      * @dev Mint function which interact with Uniswap v3
      */

contracts/mainnet/connectors/uniswap/v3/main.sol

@@ -12,6 +12,43 @@ import {Helpers} from "./helpers.sol";
 import {Events} from "./events.sol";
 
 abstract contract UniswapResolver is Helpers, Events {
+
+    /**
+     * @dev Create and Initialize pool
+     * @notice Create and Initialize new pool if required
+     * @param tokenA tokenA addreess
+     * @param tokenB tokenB addreess
+     * @param fee fee percentage
+     * @param initialTick Initial tick for the pool
+     */
+    function createAndInitializePool (
+        address tokenA,
+        address tokenB,
+        uint24 fee,
+        int24 initialTick
+    ) 
+        external
+        payable
+        returns (string memory _eventName, bytes memory _eventParam)
+    { 
+
+        address pool = _createAndInitializePoolIfNecessary(
+            tokenA,
+            tokenB,
+            fee,
+            initialTick
+        );
+
+        _eventName = "LogcreateAndInitializePool(address,address,address,uint24,int24)";
+        _eventParam = abi.encode(
+            tokenA,
+            tokenB,
+            pool,
+            fee,
+            initialTick
+        );
+    }
+
     /**
      * @dev Mint New Position
      * @notice Mint New NFT LP Position