EngagementOracle

enum ActionType {
  Post,        // 0 — weight 1.00
  Like,        // 1 — weight 0.20
  Share,       // 2 — weight 0.50
  Comment,     // 3 — weight 0.30
  Watch,       // 4 — weight 0.15
  NftCreate,   // 5 — weight 2.00
  Tip          // 6 — weight 0.80
}

function recordAction(
  address user,
  uint8 actionType,
  uint256 weight,   // scaled 1e18; the contract also enforces the canonical weight
  bytes32 targetId  // keccak256 of the client's targetId string
) external;

event ActionRecorded(
  address indexed user,
  uint8 indexed actionType,
  uint256 weight,
  bytes32 indexed targetId,
  uint256 blockTimestamp
);

function scoreOf(address user) external view returns (uint256 score);

function recentActions(uint256 count)
  external
  view
  returns (Action[] memory);

struct Action {
  address user;
  uint8 actionType;
  uint256 weight;
  bytes32 targetId;
  uint256 timestamp;
  uint256 blockNumber;
}

function weightOf(uint8 actionType) external view returns (uint256);
function setWeight(uint8 actionType, uint256 weight) external;  // onlyDAO

import { ethers } from "ethers";
import abi from "./EngagementOracle.abi.json" assert { type: "json" };

const provider = new ethers.JsonRpcProvider("https://rpc.chain.youthapp.io");
const wallet = new ethers.Wallet("0x0101...", provider);
const oracle = new ethers.Contract("0x288b...51b1", abi, wallet);

const targetId = ethers.id("post_xyz123");   // keccak256("post_xyz123")
const tx = await oracle.recordAction(
  wallet.address,
  1,                    // like
  ethers.parseEther("0.2"),
  targetId
);
await tx.wait();