import { NativeModules, Platform } from "react-native";

interface RnBbsSignaturesNativeModule {
  readonly sign: (options: {
    publicKey: number[];
    secretKey: number[];
    messageCount: number;
    messages: number[][];
  }) => Promise<Uint8Array>;
  readonly blsSign: (options: {
    publicKey: number[];
    secretKey: number[];
    messages: number[][];
  }) => Promise<Uint8Array>;
  readonly verify: (options: {
    publicKey: number[];
    signature: number[];
    messageCount: number;
    messages: number[][];
  }) => Promise<boolean>;
  readonly blsVerify: (options: { publicKey: number[]; signature: number[]; messages: number[][] }) => Promise<boolean>;
  readonly createProof: (options: {
    nonce: number[];
    revealed: readonly number[];
    publicKey: number[];
    signature: number[];
    messages: number[][];
  }) => Promise<Uint8Array>;
  readonly blsCreateProof: (options: {
    nonce: number[];
    revealed: readonly number[];
    publicKey: number[];
    signature: number[];
    messages: number[][];
  }) => Promise<Uint8Array>;
  readonly verifyProof: (options: {
    nonce: number[];
    publicKey: number[];
    proof: number[];
    messages: number[][];
  }) => Promise<boolean>;
  readonly blsVerifyProof: (options: {
    nonce: number[];
    publicKey: number[];
    proof: number[];
    messages: number[][];
  }) => Promise<boolean>;
  readonly generateBls12381G2KeyPair: (options: {
    seed?: number[];
  }) => Promise<{ publicKey: number[]; secretKey: number[] }>;
  readonly bls12381G2PublicKeyToBbsPublicKey: (options: {
    publicKey: number[];
    messageCount: number;
  }) => Promise<number[]>;
}

export function getNativeRnBbsSignatures(): RnBbsSignaturesNativeModule {
  const LINKING_ERROR =
    `The package 'test' doesn't seem to be linked. Make sure: \n\n` +
    Platform.select({ ios: "- You have run 'pod install'\n", default: "" }) +
    "- You rebuilt the app after installing the package\n" +
    "- You are not using Expo Go\n";

  return NativeModules.RnBbsSignatures
    ? NativeModules.RnBbsSignatures
    : new Proxy(
        {},
        {
          get(): Error {
            throw new Error(LINKING_ERROR);
          },
        }
      );
}