package types

import (
	"math/big"

	bn256 "github.com/ethereum/go-ethereum/crypto/bn256/cloudflare"
)

// R is the mod of the finite field
var R, _ = new(big.Int).SetString("21888242871839275222246405745257275088548364400416034343698204186575808495617", 10)

// Proof is the data structure of the Groth16 zkSNARK proof
type Proof struct {
	A *bn256.G1
	B *bn256.G2
	C *bn256.G1
}

// Pk holds the data structure of the ProvingKey
type Pk struct {
	A          []*bn256.G1
	B2         []*bn256.G2
	B1         []*bn256.G1
	C          []*bn256.G1
	NVars      int
	NPublic    int
	VkAlpha1   *bn256.G1
	VkDelta1   *bn256.G1
	VkBeta1    *bn256.G1
	VkBeta2    *bn256.G2
	VkDelta2   *bn256.G2
	HExps      []*bn256.G1
	DomainSize int
	PolsA      []map[int]*big.Int
	PolsB      []map[int]*big.Int
	PolsC      []map[int]*big.Int
}

// Witness contains the witness
type Witness []*big.Int

// Vk is the Verification Key data structure
type Vk struct {
	Alpha *bn256.G1
	Beta  *bn256.G2
	Gamma *bn256.G2
	Delta *bn256.G2
	IC    []*bn256.G1
}