diff --git a/contracts/DCAManager.sol b/contracts/DCAManager.sol
new file mode 100644
index 0000000..7d56508
--- /dev/null
+++ b/contracts/DCAManager.sol
@@ -0,0 +1,52 @@
+pragma solidity ^0.8.0;
+
+import "./interfaces/IDCAManager.sol";
+import '@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol';
+
+contract DCAManager is IDCAManager {
+
+    IUniswapV2Router02 public uniswapRouter;
+
+    constructor(address _uniswapV2Router) public {
+        uniswapRouter = IUniswapV2Router02(_uniswapV2Router);
+    }
+
+    /*
+    * See IDCAManager.sol
+    */
+    function swapOnUsersBehalf(
+        address baseToken,
+        uint amountBaseToken,
+        address destinationToken,
+        uint fromTime,
+        uint toTime,
+        uint8 v,
+        bytes32 r,
+        bytes32 s
+    ) public override returns (bool) {
+        require(block.timestamp >= fromTime && block.timestamp <= toTime, "failed to meet the time requirement");
+        // TODO have to be careful with this, if signed by a user via metamask it will add the ethereum message prefix
+        bytes memory message = abi.encodePacked(
+            baseToken,
+            amountBaseToken,
+            destinationToken,
+            fromTime,
+            toTime
+        );
+        bytes32 messageHash = keccak256(message);
+        address user = ecrecover(messageHash, v, r, s);
+        address[] memory path = new address[](2);
+        path[0] = baseToken;
+        path[1] = destinationToken;
+
+        uniswapRouter.swapExactTokensForTokensSupportingFeeOnTransferTokens(
+            amountBaseToken,
+            0, // TODO set min amount of WETH using some kind of oracle
+            path,
+            user,
+            toTime
+        );
+        return true;
+    }
+
+}
\ No newline at end of file
diff --git a/contracts/Greeter.sol b/contracts/Greeter.sol
deleted file mode 100644
index 8f67bdf..0000000
--- a/contracts/Greeter.sol
+++ /dev/null
@@ -1,23 +0,0 @@
-//SPDX-License-Identifier: Unlicense
-pragma solidity ^0.7.0;
-
-import "hardhat/console.sol";
-
-
-contract Greeter {
-  string greeting;
-
-  constructor(string memory _greeting) {
-    console.log("Deploying a Greeter with greeting:", _greeting);
-    greeting = _greeting;
-  }
-
-  function greet() public view returns (string memory) {
-    return greeting;
-  }
-
-  function setGreeting(string memory _greeting) public {
-    console.log("Changing greeting from '%s' to '%s'", greeting, _greeting);
-    greeting = _greeting;
-  }
-}
diff --git a/contracts/interfaces/IDCAManager.sol b/contracts/interfaces/IDCAManager.sol
new file mode 100644
index 0000000..816ce8a
--- /dev/null
+++ b/contracts/interfaces/IDCAManager.sol
@@ -0,0 +1,29 @@
+pragma solidity ^0.8.0;
+
+interface IDCAManager {
+
+    /*
+    * @dev allow a relayer to trigger a trade on behalf of a user with their signed permission,
+    * requires that the user approve this contract to move the base token
+    * @param baseToken - the token to trade from
+    * @param amountBaseToken - the amount of the base token to trade into the destination token
+    * @param destinationToken - the address of the token that the user wants to swap their base token into
+    * @param fromTime - the desired time for this swap to occur
+    * @param toTime - this swap should happen no later than this
+    * @param v - signature param
+    * @param r - signature param
+    * @param s - signature param
+    * @returns true if successful
+    */
+    function swapOnUsersBehalf(
+        address baseToken,
+        uint amountBaseToken,
+        address destinationToken,
+        uint fromTime,
+        uint toTime,
+        uint8 v,
+        bytes32 r,
+        bytes32 s
+    ) external returns (bool);
+
+}
\ No newline at end of file
diff --git a/hardhat.config.js b/hardhat.config.js
index 07a449f..613ec94 100644
--- a/hardhat.config.js
+++ b/hardhat.config.js
@@ -1,15 +1,5 @@
 require("@nomiclabs/hardhat-waffle");
 
-// This is a sample Hardhat task. To learn how to create your own go to
-// https://hardhat.org/guides/create-task.html
-task("accounts", "Prints the list of accounts", async () => {
-  const accounts = await ethers.getSigners();
-
-  for (const account of accounts) {
-    console.log(account.address);
-  }
-});
-
 // You need to export an object to set up your config
 // Go to https://hardhat.org/config/ to learn more
 
@@ -17,7 +7,7 @@ task("accounts", "Prints the list of accounts", async () => {
  * @type import('hardhat/config').HardhatUserConfig
  */
 module.exports = {
-  solidity: "0.7.3",
+  solidity: "0.8.0",
   defaultNetwork: "hardhat",
   networks: {
     hardhat: {
diff --git a/package-lock.json b/package-lock.json
index bca159c..6a0da5f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -667,6 +667,11 @@
         "@types/web3": "1.0.19"
       }
     },
+    "@openzeppelin/contracts": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/@openzeppelin/contracts/-/contracts-4.1.0.tgz",
+      "integrity": "sha512-TihZitscnaHNcZgXGj9zDLDyCqjziytB4tMCwXq0XimfWkAjBYyk5/pOsDbbwcavhlc79HhpTEpQcrMnPVa1mw=="
+    },
     "@resolver-engine/core": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/@resolver-engine/core/-/core-0.3.3.tgz",
@@ -969,6 +974,25 @@
         "@types/underscore": "*"
       }
     },
+    "@uniswap/lib": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/@uniswap/lib/-/lib-1.1.1.tgz",
+      "integrity": "sha512-2yK7sLpKIT91TiS5sewHtOa7YuM8IuBXVl4GZv2jZFys4D2sY7K5vZh6MqD25TPA95Od+0YzCVq6cTF2IKrOmg=="
+    },
+    "@uniswap/v2-core": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@uniswap/v2-core/-/v2-core-1.0.0.tgz",
+      "integrity": "sha512-BJiXrBGnN8mti7saW49MXwxDBRFiWemGetE58q8zgfnPPzQKq55ADltEILqOt6VFZ22kVeVKbF8gVd8aY3l7pA=="
+    },
+    "@uniswap/v2-periphery": {
+      "version": "1.1.0-beta.0",
+      "resolved": "https://registry.npmjs.org/@uniswap/v2-periphery/-/v2-periphery-1.1.0-beta.0.tgz",
+      "integrity": "sha512-6dkwAMKza8nzqYiXEr2D86dgW3TTavUvCR0w2Tu33bAbM8Ah43LKAzH7oKKPRT5VJQaMi1jtkGs1E8JPor1n5g==",
+      "requires": {
+        "@uniswap/lib": "1.1.1",
+        "@uniswap/v2-core": "1.0.0"
+      }
+    },
     "@yarnpkg/lockfile": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@yarnpkg/lockfile/-/lockfile-1.1.0.tgz",
diff --git a/package.json b/package.json
index 53d0916..b405b77 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,9 @@
 {
   "name": "drip-finance",
+  "scripts": {
+    "test": "npx hardhat test",
+    "compile": "npx hardhat compile"
+  },
   "devDependencies": {
     "@nomiclabs/hardhat-ethers": "^2.0.2",
     "@nomiclabs/hardhat-waffle": "^2.0.1",
@@ -7,5 +11,9 @@
     "ethereum-waffle": "^3.3.0",
     "ethers": "^5.1.4",
     "hardhat": "^2.2.1"
+  },
+  "dependencies": {
+    "@openzeppelin/contracts": "^4.1.0",
+    "@uniswap/v2-periphery": "^1.1.0-beta.0"
   }
 }
diff --git a/scripts/sample-script.js b/scripts/sample-script.js
deleted file mode 100644
index 1aa1a24..0000000
--- a/scripts/sample-script.js
+++ /dev/null
@@ -1,32 +0,0 @@
-// We require the Hardhat Runtime Environment explicitly here. This is optional 
-// but useful for running the script in a standalone fashion through `node <script>`.
-//
-// When running the script with `hardhat run <script>` you'll find the Hardhat
-// Runtime Environment's members available in the global scope.
-const hre = require("hardhat");
-
-async function main() {
-  // Hardhat always runs the compile task when running scripts with its command
-  // line interface.
-  //
-  // If this script is run directly using `node` you may want to call compile 
-  // manually to make sure everything is compiled
-  // await hre.run('compile');
-
-  // We get the contract to deploy
-  const Greeter = await hre.ethers.getContractFactory("Greeter");
-  const greeter = await Greeter.deploy("Hello, Hardhat!");
-
-  await greeter.deployed();
-
-  console.log("Greeter deployed to:", greeter.address);
-}
-
-// We recommend this pattern to be able to use async/await everywhere
-// and properly handle errors.
-main()
-  .then(() => process.exit(0))
-  .catch(error => {
-    console.error(error);
-    process.exit(1);
-  });
diff --git a/test/DCAManagerTests.js b/test/DCAManagerTests.js
new file mode 100644
index 0000000..c6e1d8f
--- /dev/null
+++ b/test/DCAManagerTests.js
@@ -0,0 +1,40 @@
+const { expect } = require("chai");
+
+//TODO complete
+describe("DCAManager functions", function() {
+
+  before(async function() {
+    const [user, relayer] = await ethers.getSigners();
+    this.user = user;
+    this.relayer = relayer;
+    const erc20 = await ethers.getContractFactory("ERC20");
+    const DCAManager = await ethers.getContractFactory("DCAManager");
+    //TODO get or deploy uniswap
+    this.baseToken = await erc20.deploy("BASE", 18);
+    this.destinationToken = await erc20.deploy("DEST", 18);
+    this.DCAManager = await DCAManager.deploy("0x0000000000000000000000000000000000000000");
+    const defaultSwapOrder = {
+      baseToken: this.baseToken.address,
+      amountBaseToken: 100000000000,
+      destinationToken: this.destinationToken.address,
+      fromTime: 0,
+      toTime: 100000000000000000000
+    };
+    this.order = defaultSwapOrder;
+    //TODO make sure to pad
+    const msg = `${defaultSwapOrder.baseToken}${defaultSwapOrder.amountBaseToken}${defaultSwapOrder.destinationToken}${defaultSwapOrder.fromTime}${defaultSwapOrder.toTime}`
+    const flatSignature = await user.signMessage(msg);
+    this.sig = ethers.utils.splitSignature(flatSignature);
+  });
+
+  it("Should fail to swap due to lack of approval from user", async function() {
+    expect(await this.DCAManager.swapOnUsersBehalf(...this.order, ...this.sig)).reverted;
+  });
+
+  it("Should be able to swap on behalf of the user", async function() {
+    const token = this.baseToken.connect(this.user);
+    token.approve(this.relayer.address, "0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF")
+    const DCAManager = this.DCAManager.connect(this.relayer);
+    expect(await DCAManager.swapOnUsersBehalf(...this.order, ...this.sig)).to.equal(true, "swap executed");
+  });
+});
diff --git a/test/sample-test.js b/test/sample-test.js
deleted file mode 100644
index 83bee5a..0000000
--- a/test/sample-test.js
+++ /dev/null
@@ -1,14 +0,0 @@
-const { expect } = require("chai");
-
-describe("Greeter", function() {
-  it("Should return the new greeting once it's changed", async function() {
-    const Greeter = await ethers.getContractFactory("Greeter");
-    const greeter = await Greeter.deploy("Hello, world!");
-    
-    await greeter.deployed();
-    expect(await greeter.greet()).to.equal("Hello, world!");
-
-    await greeter.setGreeting("Hola, mundo!");
-    expect(await greeter.greet()).to.equal("Hola, mundo!");
-  });
-});