add feerates info to /wallet

lib/wallet/wallet-info.js

@@ -7,6 +7,7 @@
 const db = require('../db/mysql-db-wrapper')
 const util = require('../util')
 const rpcLatestBlock = require('../bitcoind-rpc/latest-block')
+const rpcFees = require('../bitcoind-rpc/fees')
 const addrService = require('../bitcoin/addresses-service')
 const HdAccountInfo = require('./hd-account-info')
 const AddressInfo = require('./address-info')
@@ -31,6 +32,7 @@ class WalletInfo {
     }
 
     this.info = {
+      fees: {},
       latestBlock: {
         height: rpcLatestBlock.height,
         hash: rpcLatestBlock.hash,
@@ -159,6 +161,14 @@ class WalletInfo {
       this.nTx = nbTxs
   }
 
+  /**
+   * Loads tinfo about the fee rates
+   * @returns {Promise}
+   */
+  async loadFeesInfo() {
+    this.info.fees = await rpcFees.getFees() 
+  }
+
   /**
    * Loads the list of unspent outputs for this wallet
    * @returns {Promise}
@@ -295,6 +305,7 @@ class WalletInfo {
         final_balance: this.wallet.finalBalance
       },
       info: {
+        fees: this.info.fees,
         latest_block: this.info.latestBlock
       },
       addresses: this.addresses.map(a => a.toPojo()),

lib/wallet/wallet-service.js

@@ -77,6 +77,8 @@ class WalletService {
       await walletInfo.loadAddressesInfo()
       // Load the most recent transactions
       await walletInfo.loadTransactions(0, null, true)
+      // Load feerates
+      await walletInfo.loadFeesInfo()
       // Postprocessing
       await walletInfo.postProcessAddresses()
       await walletInfo.postProcessHdAccounts()
@@ -181,6 +183,7 @@ class WalletService {
 
     delete ret['n_tx']
     delete ret['unspent_outputs']
+    delete ret['info']['fees']
 
     ret.addresses = ret.addresses.map(x => {
       delete x['derivation']