social-tw-website/packages/circuits/src/ReportNullifierProof.ts

import { BaseProof, Circuit, Prover } from '@unirep/circuits'
import { Groth16Proof, PublicSignals } from 'snarkjs'
import { UnirepSocialCircuit } from './types'
import { decodeEpochKeyControl } from './utils'

/**
 *  Verify the voter identity for claiming reputation
 */
export class ReportNullifierProof extends BaseProof {
    readonly output = {
        control: 0,
        currentEpochKey: 1,
    }

    readonly input = {
        reportNullifier: 2,
        reportId: 3,
    }

    public reportNullifier: bigint
    public reportId: bigint
    public currentEpochKey: bigint
    public control: bigint

    public nonce: bigint
    public epoch: bigint
    public attesterId: bigint
    public revealNonce: bigint
    public chainId: bigint

    constructor(
        _publicSignals: PublicSignals,
        _proof: Groth16Proof,
        prover?: Prover
    ) {
        super(_publicSignals, _proof, prover)
        this.reportNullifier = BigInt(
            _publicSignals[this.input.reportNullifier]
        )
        this.reportId = BigInt(_publicSignals[this.input.reportId])
        this.currentEpochKey = BigInt(
            _publicSignals[this.output.currentEpochKey]
        )
        this.control = BigInt(this.publicSignals[this.output.control])

        const { nonce, epoch, attesterId, revealNonce, chainId } =
            decodeEpochKeyControl(this.control)
        this.nonce = nonce
        this.epoch = epoch
        this.attesterId = attesterId
        this.revealNonce = revealNonce
        this.chainId = chainId
        this.circuit =
            UnirepSocialCircuit.reportNullifierProof as any as Circuit
    }
}