Updated Correct v2.5 VRF

2024-08-08 03:56:57 +08:00
parent 5a5063948c
commit 7ecbd4c7b5
5 changed files with 8636 additions and 192 deletions
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: Unlicense
+
+/*
+Raffle Contract
+Enter the lottery (paying some amount)
+Pick a random winner (verifiably random)
+Winner to be selected every X minutes -> completely automated
+Chainlink Oracle -> Randomness, Automated Execution (Chainlink Keeper)
+*/
+pragma solidity ^0.8.7;
+
+///// UPDATE IMPORTS TO V2.5 /////
+import {VRFConsumerBaseV2Plus} from "@chainlink/contracts/src/v0.8/vrf/dev/VRFConsumerBaseV2Plus.sol";
+import {VRFV2PlusClient} from "@chainlink/contracts/src/v0.8/vrf/dev/libraries/VRFV2PlusClient.sol";
+
+error Raffle__NotEnoughETHEntered();
+
+contract Raffle is VRFConsumerBaseV2Plus {
+    /* State Variables */
+    uint256 private immutable i_entranceFee;
+    address payable[] private s_players;
+
+    /* Event */
+    event RaffleEnter(address indexed player);
+
+    constructor(
+        address vrfCoordinatorV2,
+        uint256 entranceFee
+    ) VRFConsumerBaseV2Plus(vrfCoordinatorV2) {
+        i_entranceFee = entranceFee;
+    }
+
+    function enterRaffle() public payable {
+        // require(msg.value > i_entranceFee, "ETH too less!");
+        if (msg.value < i_entranceFee) {
+            revert Raffle__NotEnoughETHEntered();
+        }
+        s_players.push(payable(msg.sender));
+        // Events - Update
+    }
+
+    function requestRandomWinner() external returns (uint256 requestId) {
+        // Use Chainlink VRF V2 & Chainlink keeper
+        // https://docs.chain.link/vrf/v2/subscription/examples/get-a-random-number
+        // 0xb91d9cab0193d3cda599df11c4889f89c4a9fef9ec403de158ea67ce1f3a9e26
+        /**
+         * Create subscription at https://vrf.chain.link/ (MetaMask #1)
+         * Add Fund To The Created Subsciption Contract (MetaMask #2)
+         * Add Consumer
+         *     Get Subscription ID
+         *     Open Remix To Prepare Deploy Consumer Contract https://docs.chain.link/vrf/v2-5/migration-from-v2
+         *     Change To Correct gwei limit hash address at https://docs.chain.link/vrf/v2/subscription/supported-networks
+         *     Adjust Setting - random words count, confirmation blocks etc.
+         *     Insert Subscription ID - v2 is uint64 BUT **v2.5 is uint256**
+         *     Deploy And Get hash address (MetaMask #3)
+         *     Insert in chainlink consumer (Metamask #4)
+         * Ready to use, record down the consumer contract address
+         *         *
+         * v2.5 uint256 Subscription ID - 54852953177758767717007928774683925681326589777506065303357242036079980899870
+         * Admin Contract Creator address - 0xc9445e993daea4ba3f1fe1080f0f6f8c46b4d967
+         * Consumer address - 0x22eec58ce2cee446051337d71d59c89cb004d1c7
+         * Admin Approval Contract address - 0x9DdfaCa8183c41ad55329BdeeD9F6A8d53168B1B
+         */
+        // Request Random Number
+        //
+    }
+
+    function fulfillRandomWords(
+        uint256 requestId,
+        uint256[] calldata randomWords
+    ) internal override {}
+
+    function getEntranceFee() public view returns (uint256) {
+        return i_entranceFee;
+    }
+
+    function getPlayer(uint256 index) public view returns (address) {
+        return s_players[index];
+    }
+}