feat: add genesis hash to injected accounts

DApp will use this to determine which network can the account be used with.
This is especially important in this case, as accounts are always restricted to one network.

packages/adapter/src/extension/index.ts

@@ -21,9 +21,10 @@ interface IInjectPolkadotSnap extends IEnablePolkadotSnapParams {
   injectedSnapId?: string;
 }
 
-function transformAccounts(accounts: string[]): InjectedAccount[] {
+function transformAccounts(accounts: string[], config?: SnapConfig): InjectedAccount[] {
   return accounts.map((address, i) => ({
     address,
+    genesisHash: config?.genesisHash,
     name: `Polkadot Snap #${i}`,
     type: 'ed25519'
   }));
@@ -46,7 +47,7 @@ function injectPolkadotSnap({
         accounts: {
           get: async (): Promise<InjectedAccount[]> => {
             const response = await snap.getAddress();
-            return transformAccounts([response]);
+            return transformAccounts([response], config);
           },
           // Currently there is only available only one account, in that case this method will never return anything
           // eslint-disable-next-line @typescript-eslint/no-unused-vars

packages/snap/src/configuration/predefined.ts

@@ -3,6 +3,7 @@ import type { SnapConfig } from '@chainsafe/metamask-polkadot-types';
 export const kusamaConfiguration: SnapConfig = {
   addressPrefix: 2,
   networkName: 'kusama',
+  genesisHash: '0xb0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe',
   unit: {
     decimals: 12,
     image: 'https://svgshare.com/i/L3o.svg',
@@ -14,6 +15,7 @@ export const kusamaConfiguration: SnapConfig = {
 export const westendConfiguration: SnapConfig = {
   addressPrefix: 42,
   networkName: 'westend',
+  genesisHash: '0xe143f23803ac50e8f6f8e62695d1ce9e4e1d68aa36c1cd2cfd15340213f3423e',
   unit: {
     decimals: 12,
     image: 'https://svgshare.com/i/L2d.svg',
@@ -25,6 +27,7 @@ export const westendConfiguration: SnapConfig = {
 export const polkadotConfiguration: SnapConfig = {
   addressPrefix: 0,
   networkName: 'polkadot',
+  genesisHash: '0x91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3',
   unit: {
     decimals: 12,
     image: 'https://polkadot.js.org/apps/static/polkadot-circle.1eea41b2..svg',

packages/types/index.d.ts

@@ -16,7 +16,7 @@ export interface ExportAccountRequest {
   method: 'exportAccount';
   params: {
     jsonPassphrase?: string;
-  }
+  };
 }
 
 export interface GetTransactionsRequest {
@@ -136,6 +136,7 @@ export type SnapNetworks = 'polkadot' | 'kusama' | 'westend' | string;
 
 export interface SnapConfig {
   networkName: SnapNetworks;
+  genesisHash?: `0x${string}`;
   wsRpcUrl?: string;
   addressPrefix?: number;
   unit?: UnitConfiguration;