utils.ts

import { ethers } from 'ethers';
import stringify from 'json-stable-stringify';

import {
  CreateTriggerPayload,
  DeleteTriggerPayload,
  UpdateTriggerPayload,
} from './interfaces';

/**
 * Generate the payload message of a trigger to be signed.
 * @param payload The trigger payload.
 * @returns The payload message.
 */
export function generatePayloadMessage(
  payload: CreateTriggerPayload | DeleteTriggerPayload | UpdateTriggerPayload,
): string {
  return stringify(payload);
}

/**
 * Sign a payload message with an ethers signer.
 * @param payloadMessage The payload message to sign.
 * @param signer The ethers signer.
 * @returns The signature.
 */
export function signPayloadMessage(
  payloadMessage: string,
  signer: ethers.Signer,
): Promise<string> {
  return signer.signMessage(payloadMessage);
}

/**
 * Sign a trigger payload with an ethers signer.
 * @param payload The trigger payload.
 * @param signer The ethers signer.
 * @returns The signature.
 */
export function signPayload(
  payload: CreateTriggerPayload | DeleteTriggerPayload | UpdateTriggerPayload,
  signer: ethers.Signer,
): Promise<string> {
  return signPayloadMessage(generatePayloadMessage(payload), signer);
}