Add chain genesis, lookups for toggle (#247)

packages/ui-keyring/src/Keyring.ts

@@ -8,6 +8,7 @@ import { AddressSubject, SingleAddress } from './observable/types';
 import { CreateResult, KeyringAddress, KeyringAddressType, KeyringItemType, KeyringJson, KeyringJson$Meta, KeyringOptions, KeyringStruct } from './types';
 
 import createPair from '@polkadot/keyring/pair';
+import chains from '@polkadot/ui-settings/defaults/chains';
 import { hexToU8a, isHex, isString } from '@polkadot/util';
 
 import env from './observable/development';
@@ -219,10 +220,14 @@ export class Keyring extends Base implements KeyringStruct {
 
   private allowGenesis (json?: KeyringJson | { meta: KeyringJson$Meta } | null): boolean {
     if (json && json.meta && this.genesisHash) {
+      const hashes: (string | null | undefined)[] = Object.values(chains).find((hashes): boolean =>
+        hashes.includes(this.genesisHash || '')
+      ) || [this.genesisHash];
+
       if (json.meta.genesisHash) {
-        return this.genesisHash === json.meta.genesisHash;
+        return hashes.includes(json.meta.genesisHash);
       } else if (json.meta.contract) {
-        return this.genesisHash === json.meta.contract.genesisHash;
+        return hashes.includes(json.meta.contract.genesisHash);
       }
     }
 

packages/ui-settings/src/defaults/chains.ts

@@ -0,0 +1,15 @@
+// Copyright 2017-2019 @polkadot/ui-settings authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+type ChainDef = string[];
+
+const chains: Record<string, ChainDef> = {
+  kusama: [
+    '0x3fd7b9eb6a00376e5be61f01abb429ffb0b104be05eaff4d458da48fcd425baf', // Kusama CC1
+    '0xe3777fa922cafbff200cadeaea1a76bd7898ad5b89f7848999058b50e715f636', // Kusama CC2
+    '0xb0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe' // Kusama CC3
+  ]
+};
+
+export default chains;