add dodoStarterProxy

contracts/SmartRoute/proxies/DODOStarterProxy.sol

@@ -0,0 +1,81 @@
+/*
+    Copyright 2021 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+*/
+
+pragma solidity 0.6.9;
+
+import {IDODOApproveProxy} from "../DODOApproveProxy.sol";
+import {IERC20} from "../../intf/IERC20.sol";
+import {SafeERC20} from "../../lib/SafeERC20.sol";
+import {IWETH} from "../../intf/IWETH.sol";
+import {SafeMath} from "../../lib/SafeMath.sol";
+import {SafeERC20} from "../../lib/SafeERC20.sol";
+import {ReentrancyGuard} from "../../lib/ReentrancyGuard.sol";
+import {IDODOStarter} from "../../DODOStarter/intf/IDODOStarter.sol";
+
+/**
+ * @title DODOStarterProxy
+ * @author DODO Breeder
+ *
+ * @notice FairFund && InstantFund Proxy
+ */
+contract DODOStarterProxy is ReentrancyGuard {
+    using SafeMath for uint256;
+    using SafeERC20 for IERC20;
+
+    // ============ Storage ============
+
+    address constant _ETH_ADDRESS_ = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
+    address public immutable _WETH_;
+    address public immutable _DODO_APPROVE_PROXY_;
+
+    // ============ Modifiers ============
+
+    modifier judgeExpired(uint256 deadLine) {
+        require(deadLine >= block.timestamp, "DODOStarterProxy: EXPIRED");
+        _;
+    }
+
+    fallback() external payable {}
+
+    receive() external payable {}
+
+    constructor(
+        address payable weth,
+        address dodoApproveProxy
+    ) public {
+        _WETH_ = weth;
+        _DODO_APPROVE_PROXY_ = dodoApproveProxy;
+    }
+
+    //============  Functions (bid) ============
+    function bid(
+        address pool,
+        uint256 fundAmount,
+        uint8 flag, // 0 - ERC20, 1 - fundInETH
+        uint256 deadLine
+    ) external payable preventReentrant judgeExpired(deadLine) returns(uint256) {
+        _deposit(msg.sender, pool, IDODOStarter(pool)._FUNDS_ADDRESS_(), fundAmount, flag == 1);
+        return IDODOStarter(pool).depositFunds(msg.sender);
+    }
+
+    //====================== internal =======================
+
+    function _deposit(
+        address from,
+        address to,
+        address token,
+        uint256 amount,
+        bool isETH
+    ) internal {
+        if (isETH) {
+            if (amount > 0) {
+                IWETH(_WETH_).deposit{value: amount}();
+                if (to != address(this)) SafeERC20.safeTransfer(IERC20(_WETH_), to, amount);
+            }
+        } else {
+            IDODOApproveProxy(_DODO_APPROVE_PROXY_).claimTokens(token, from, to, amount);
+        }
+    }
+}