const fs = require("fs")
const ethers = require("ethers")
const { BigNumber } = ethers

const BASE_PATH = __dirname + "/../verifier/networks"
const PROOF_FILE_NAME = "example-proof/proof.json"

function G1ToStruct(point) {
  return {
    x: point[0],
    y: point[1]
  }
}

function G2ToStruct(point) {
  return {
    x: [ point[0][1], point[0][0] ],
    y: [ point[1][1], point[1][0] ]
  }
}

function loadProof(name) {
  const proof = JSON.parse(
    fs.readFileSync(`${BASE_PATH}/${name}/${PROOF_FILE_NAME}`)
  )
  return {
    a: G1ToStruct(proof['pi_a']),
    b: G2ToStruct(proof['pi_b']),
    c: G1ToStruct(proof['pi_c'])
  }
}

module.exports = { loadProof }