@enjin-io/metamask-enjin-adapter/src/snap.ts

import type { SnapConfig } from '@enjin-io/metamask-enjin-types';
import {
  getAddress,
  getAllTransactions,
  getBalances,
  getConfiguration,
  getLatestBlock,
  getPublicKey,
  sendSignedData,
  setConfiguration,
  signPayloadJSON,
  signPayloadRaw
} from './methods';
import type { MetamaskSnapApi } from './types';

export class MetamaskPolkadotSnap {
  protected readonly config: SnapConfig;
  //url to package.json
  protected readonly pluginOrigin: string;
  //pluginOrigin prefixed with wallet_plugin_
  protected readonly snapId: string;

  public constructor(pluginOrigin: string, config: SnapConfig) {
    this.pluginOrigin = pluginOrigin;
    this.snapId = `${this.pluginOrigin}`;
    this.config = config || { networkName: 'enjin-relaychain' };
  }

  public getMetamaskSnapApi = (): MetamaskSnapApi => {
    return {
      getAddress: getAddress.bind(this),
      getAllTransactions: getAllTransactions.bind(this),
      getBalances: getBalances.bind(this),
      getLatestBlock: getLatestBlock.bind(this),
      getPublicKey: getPublicKey.bind(this),
      send: sendSignedData.bind(this),
      getConfiguration: getConfiguration.bind(this),
      setConfiguration: setConfiguration.bind(this),
      signPayloadJSON: signPayloadJSON.bind(this),
      signPayloadRaw: signPayloadRaw.bind(this)
    };
  };
}