start work on automation contract

README.md

@@ -21,3 +21,11 @@ yarn start
 ```
 
 4. Fund the VRFConsumer contract with LINK. Visit the [LINK faucet](https://faucets.chain.link/)
+
+### Example BG Project Exploration links
+
+- https://jadenkore.medium.com/creating-a-dynamic-nft-that-updates-in-real-time-based-on-chain-data-3d989c04f137
+
+- https://app.buidlguidl.com/build/NxKk0AQM5LBm2ks4aSZr
+
+- https://github.com/danielkhoo/scaffold-eth/tree/buidl-guidl-dynamic-nft

packages/hardhat/contracts/AutomationConsumer.sol

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.7;
+
+import "@chainlink/contracts/src/v0.8/automation/AutomationCompatible.sol";
+
+// Errors
+error AutomationConsumer__UpkeepNotNeeded();
+
+/**
+ *
+ */
+contract AutomationConsumer is AutomationCompatibleInterface {
+	// State variables
+
+	/** Chainlink Keeper nodes call checkUpkeep to see if upkeepNeeded is true
+	 *
+	 *  https://docs.chain.link/chainlink-automation/compatible-contracts#checkupkeep-function
+	 */
+	function checkUpkeep(
+		bytes memory /* checkData */
+	)
+		public
+		pure
+		override
+		returns (bool upkeepNeeded, bytes memory /* performData */)
+	{
+		upkeepNeeded = true;
+	}
+
+	/**
+	 * @dev Once `checkUpkeep` returns true, this function triggers
+	 *  the Chainlink VRF node being called to generate a random number
+	 *
+	 * @dev then the `fullfillRandomWords` function is automatically called once the Chainlink VRF node
+	 * returns the random number because of this contract inherting from `VRFConsumerBaseV2`
+	 *
+	 * @dev https://docs.chain.link/chainlink-automation/compatible-contracts#performupkeep-function
+	 */
+	function performUpkeep(bytes calldata /* performData */) external override {
+		// best practice to revalidate the upkeepNeeded
+		(bool upkeepNeeded, ) = checkUpkeep(bytes("0x"));
+		if (!upkeepNeeded) {
+			revert AutomationConsumer__UpkeepNotNeeded();
+		}
+	}
+}

packages/nextjs/pages/automation.tsx

@@ -11,8 +11,7 @@ const AutomationPage: NextPage = () => {
         <InformationSection
           summary={
             <>
-              Chainlink Automation allows you to call a smart contract function if a specific set of conditions are met.
-              The{" "}
+              Chainlink Automation calls a smart contract function if a specified set of criteria are met. The{" "}
               <ExternalLink
                 href="https://docs.chain.link/chainlink-automation/job-scheduler"
                 text="time-based trigger"
@@ -42,11 +41,20 @@ const AutomationPage: NextPage = () => {
                 href="https://docs.chain.link/chainlink-automation/register-upkeep"
                 text="custom logic trigger"
               />{" "}
-              requires your target contract be compatible with <InlineCode text="AutomationCompatibleInterface" />
+              requires your target contract be compatible with{" "}
+              <ExternalLink
+                href="https://docs.chain.link/chainlink-automation/reference/automation-interfaces#automationcompatibleinterface"
+                text="AutomationCompatibleInterface"
+              />{" "}
+              by overriding the <InlineCode text="checkUpkeep" /> and <InlineCode text="performUpkeep" /> functions
             </>,
             <>
               The <ExternalLink href="https://docs.chain.link/chainlink-automation/log-trigger" text="log trigger" />{" "}
-              requires your target contract be compatible with <InlineCode text="AutomationCompatibleInterface" />
+              requires your target contract be compatible with{" "}
+              <ExternalLink
+                href="https://docs.chain.link/chainlink-automation/reference/automation-interfaces#ilogautomation"
+                text="IlogAutomation"
+              />
             </>,
           ]}
           gettingStarted={[