JS: Reference Snippets

import { JsonRpcProvider, BrowserProvider, Contract } from 'ethers'
import OracleArtifact from '../../../artifacts/contracts/FarmTruth.sol/DecentralizedOracle.json'

const ORACLE_ADDRESS = '0xFA4595F636887CA28FCA3260486e44fdcc8c8A71'

// Provider (read-only)
const provider = new JsonRpcProvider(process.env.RPC!)
const oracleRead = new Contract(ORACLE_ADDRESS, (OracleArtifact as any).abi, provider)

// Signer (write tx)
const browser = new BrowserProvider((globalThis as any).ethereum)
const signer = await browser.getSigner()
const oracle = new Contract(ORACLE_ADDRESS, (OracleArtifact as any).abi, signer)

const code = await provider.getCode(ORACLE_ADDRESS)
if (!code || code === '0x') throw new Error('No bytecode at ORACLE_ADDRESS')

const currentBlock = await signer.provider!.getBlockNumber()
const startBlock = BigInt(currentBlock + 20)
const question = 'Is block.number increasing?'
const metadata = JSON.stringify({ ref: 'snippet-create' })
const totalOptions = 2

await (await oracle.createQuery(startBlock, question, metadata, totalOptions)).wait()

const queryId = 0n
const selectedOptions = [1]
const collateral = 10n * 10n ** 18n

await (await oracle.voteOnQuery(queryId, selectedOptions, collateral)).wait()

try {
  await (await oracle.resolveQuery(queryId)).wait()
} catch (e) {
  // either too early or tie; if tie, voting period extended
}

const me = await signer.getAddress()
if (await oracle.canClaimRewards(queryId, me)) {
  await (await oracle.claimRewards(queryId)).wait()
}

const d = await oracleRead.getQueryDetails(queryId)
const [
  creator, startBlock, originalEndBlock, currentEndBlock,
  question, metadata, totalOptions, resolved, winningOptions,
  totalCollateral, totalWinningCollateral, totalPot,
  createdAt, lastVoteBlock, inTieExtension, canBeResolved
] = d

const count = await oracleRead.getActiveQueriesCount()
const ids = await oracleRead.getActiveQueries(0, (count > 50n ? 50n : count))

const [hashes, decoded, weights] = await oracleRead.getQueryAnswers(queryId, 0, 100n)
decoded.forEach((opts, i) => {
  console.log('opts:', opts.map(x => x.toString()), 'weight:', weights[i].toString())
})

const me = await signer.getAddress()
const expected = await oracleRead.getExpectedReward(queryId, me)
console.log(expected.toString())