feat: add real price calculation to swap page (#459)

src/utils/desktop.ts

@@ -1,3 +1,6 @@
+import axios from 'axios'
+import { DaiToken } from '../models/DaiToken'
+import { Token } from '../models/Token'
 import { getJson, postJson, sendRequest } from './net'
 
 interface DesktopStatus {
@@ -15,6 +18,12 @@ export async function getDesktopStatus(): Promise<DesktopStatus> {
   return response as DesktopStatus
 }
 
+export async function getBzzPriceAsDai(): Promise<Token> {
+  const response = await axios.get(`${getDesktopHost()}/price`)
+
+  return DaiToken.fromDecimal(response.data, 18)
+}
+
 export async function upgradeToLightNode(rpcProvider: string): Promise<void> {
   await updateDesktopConfiguration({
     'chain-enable': true,