Add parity_defaultAccount RPC (with subscription) (#4383)

* Add parity_defaultAccount RPC (with subscription)

* Add jsonrpc interface

js/src/api/rpc/parity/parity.js

@@ -81,6 +81,12 @@ export default class Parity {
       .execute('parity_decryptMessage', inAddress(address), inHex(data));
   }
 
+  defaultAccount () {
+    return this._transport
+      .execute('parity_defaultAccount')
+      .then(outAddress);
+  }
+
   defaultExtraData () {
     return this._transport
       .execute('parity_defaultExtraData');
@@ -307,11 +313,6 @@ export default class Parity {
       .execute('parity_postTransaction', inOptions(options));
   }
 
-  postSign (from, message) {
-    return this._transport
-      .execute('parity_postSign', from, message);
-  }
-
   registryAddress () {
     return this._transport
       .execute('parity_registryAddress')

js/src/api/subscriptions/manager.js

@@ -26,6 +26,7 @@ const events = {
   'eth_blockNumber': { module: 'eth' },
   'parity_accountsInfo': { module: 'personal' },
   'parity_allAccountsInfo': { module: 'personal' },
+  'parity_defaultAccount': { module: 'personal' },
   'eth_accounts': { module: 'personal' },
   'signer_requestsToConfirm': { module: 'signer' }
 };

js/src/api/subscriptions/personal.js

@@ -30,12 +30,21 @@ export default class Personal {
     this._started = true;
 
     return Promise.all([
+      this._defaultAccount(),
       this._listAccounts(),
       this._accountsInfo(),
       this._loggingSubscribe()
     ]);
   }
 
+  _defaultAccount = () => {
+    return this._api.parity
+      .defaultAccount()
+      .then((defaultAccount) => {
+        this._updateSubscriptions('parity_defaultAccount', null, defaultAccount);
+      });
+  }
+
   _listAccounts = () => {
     return this._api.eth
       .accounts()
@@ -77,6 +86,11 @@ export default class Personal {
         case 'parity_setAccountMeta':
           this._accountsInfo();
           return;
+
+        case 'parity_setDappsAddresses':
+        case 'parity_setNewDappsWhitelist':
+          this._defaultAccount();
+          return;
       }
     });
   }

js/src/api/subscriptions/personal.spec.js

@@ -18,18 +18,20 @@ import sinon from 'sinon';
 
 import Personal from './personal';
 
+const TEST_DEFAULT = '0xfa64203C044691aA57251aF95f4b48d85eC00Dd5';
 const TEST_INFO = {
-  '0xfa64203C044691aA57251aF95f4b48d85eC00Dd5': {
+  [TEST_DEFAULT]: {
     name: 'test'
   }
 };
-const TEST_LIST = ['0xfa64203C044691aA57251aF95f4b48d85eC00Dd5'];
+const TEST_LIST = [TEST_DEFAULT];
 
 function stubApi (accounts, info) {
   const _calls = {
     accountsInfo: [],
     allAccountsInfo: [],
-    listAccounts: []
+    listAccounts: [],
+    defaultAccount: []
   };
 
   return {
@@ -46,6 +48,12 @@ function stubApi (accounts, info) {
 
         _calls.allAccountsInfo.push(stub);
         return stub;
+      },
+      defaultAccount: () => {
+        const stub = sinon.stub().resolves(Object.keys(info || TEST_INFO)[0])();
+
+        _calls.defaultAccount.push(stub);
+        return stub;
       }
     },
     eth: {
@@ -107,9 +115,10 @@ describe('api/subscriptions/personal', () => {
       });
 
       it('updates subscribers', () => {
-        expect(cb.firstCall).to.have.been.calledWith('eth_accounts', null, TEST_LIST);
-        expect(cb.secondCall).to.have.been.calledWith('parity_accountsInfo', null, TEST_INFO);
-        expect(cb.thirdCall).to.have.been.calledWith('parity_allAccountsInfo', null, TEST_INFO);
+        expect(cb).to.have.been.calledWith('parity_defaultAccount', null, TEST_DEFAULT);
+        expect(cb).to.have.been.calledWith('eth_accounts', null, TEST_LIST);
+        expect(cb).to.have.been.calledWith('parity_accountsInfo', null, TEST_INFO);
+        expect(cb).to.have.been.calledWith('parity_allAccountsInfo', null, TEST_INFO);
       });
     });
 
@@ -124,6 +133,10 @@ describe('api/subscriptions/personal', () => {
         expect(personal.isStarted).to.be.true;
       });
 
+      it('calls parity_defaultAccount', () => {
+        expect(api._calls.defaultAccount.length).to.be.ok;
+      });
+
       it('calls personal_accountsInfo', () => {
         expect(api._calls.accountsInfo.length).to.be.ok;
       });

js/src/jsonrpc/interfaces/parity.js

@@ -183,6 +183,17 @@ export default {
     }
   },
 
+  defaultAccount: {
+    section: SECTION_ACCOUNTS,
+    desc: 'Returns the defaultAccount that is to be used with transactions',
+    params: [],
+    returns: {
+      type: Address,
+      desc: 'The account address',
+      example: '0x63Cf90D3f0410092FC0fca41846f596223979195'
+    }
+  },
+
   defaultExtraData: {
     section: SECTION_MINING,
     desc: 'Returns the default extra data',