LABS-419 Add get_fee_estimate to Gaming API, via WalletConnect

resources/gaming-fe/src/constants/wallet-connect.ts

@@ -13,6 +13,7 @@ export enum ChiaMethod {
   SignMessageByAddress = 'chia_signMessageByAddress',
   VerifySignature = 'chia_verifySignature',
   GetNextAddress = 'chia_getNextAddress',
+  GetFeeEstimate = 'chia_getFeeEstimate',
   GetSyncStatus = 'chia_getSyncStatus',
   GetAllOffers = 'chia_getAllOffers',
   GetOffersCount = 'chia_getOffersCount',

resources/gaming-fe/src/hooks/BlockchainConnector.ts

@@ -18,6 +18,8 @@ export interface BlockchainOutboundTransactionRequest {
 
 export type BlockchainOutboundAddressRequest = boolean;
 
+export type BlockchainOutboundFeeRequest = boolean;
+
 export type BlockchainOutboundBalanceRequest = boolean;
 
 export interface BlockchainOutboundRequest {
@@ -26,6 +28,7 @@ export interface BlockchainOutboundRequest {
   transaction?: BlockchainOutboundTransactionRequest;
   getAddress?: BlockchainOutboundAddressRequest;
   getBalance?: BlockchainOutboundBalanceRequest;
+  getFee?: BlockchainOutboundFeeRequest;
 }
 
 export interface BlockchainInboundReply {
@@ -34,6 +37,7 @@ export interface BlockchainInboundReply {
   transaction?: string;
   getAddress?: BlockchainInboundAddressResult;
   getBalance?: number;
+  getFee?: number;
   error?: string;
 }
 

resources/gaming-fe/src/hooks/FakeBlockchainInterface.ts

@@ -210,6 +210,10 @@ export class FakeBlockchainInterface implements InternalBlockchainInterface {
   getBalance(): Promise<number> {
     return this.upstream.getBalance();
   }
+
+  getFeeEstimate(): Promise<number> {
+    return this.upstream.getFeeEstimate();
+  }
 }
 
 export const fakeBlockchainInfo = new FakeBlockchainInterface(
@@ -226,6 +230,7 @@ export function connectSimulatorBlockchain() {
       let transaction = evt.transaction;
       let getAddress = evt.getAddress;
       let getBalance = evt.getBalance;
+      let getFee = evt.getFee;
       if (initialSpend) {
         return fakeBlockchainInfo
           .do_initial_spend(
@@ -271,6 +276,10 @@ export function connectSimulatorBlockchain() {
         fakeBlockchainInfo.getBalance().then((balance) => {
           blockchainConnector.replyEmitter({ responseId: evt.requestId, getBalance: balance });
         });
+      } else if (getFee) {
+      fakeBlockchainInfo.getFeeEstimate().then((fee) => {
+        blockchainConnector.replyEmitter({ responseId: evt.requestId, getFee: fee });
+      });
       } else {
         console.error(`unknown blockchain request type ${JSON.stringify(evt)}`);
         blockchainConnector.replyEmitter({

resources/gaming-fe/src/hooks/JsonRpcContext.tsx

@@ -39,6 +39,7 @@ import {
   GetCurrentAddressRequest,
   GetCurrentAddressResponse,
 } from '../types/rpc/GetCurrentAddress';
+import { GetFeeEstimateRequest, GetFeeEstimateResponse } from '../types/rpc/GetFeeEstimate';
 import {
   GetNextAddressRequest,
   GetNextAddressResponse,
@@ -320,6 +321,13 @@ async function getWalletAddresses(data: GetWalletAddressesRequest) {
   );
 }
 
+async function getFeeEstimate(data: GetFeeEstimateRequest) {
+  return await request<GetFeeEstimateResponse>(
+    ChiaMethod.GetFeeEstimate,
+    data,
+  );
+}
+
 // Offers
 
 async function getAllOffers(data: GetAllOffersRequest) {
@@ -454,6 +462,7 @@ export const rpc = {
   getNextAddress,
   getSyncStatus,
   getWalletAddresses,
+  getFeeEstimate,
 
   // Offers
   getAllOffers,

resources/gaming-fe/src/hooks/RealBlockchainInterface.ts

@@ -236,6 +236,8 @@ export function connectRealBlockchain(baseUrl: string) {
       let transaction = evt.transaction;
       let getAddress = evt.getAddress;
       let getBalance = evt.getBalance;
+      let getFee = evt.getFee;
+
       if (initialSpend) {
         try {
           const currentAddress = await rpc.getCurrentAddress({
@@ -332,18 +334,25 @@ export function connectRealBlockchain(baseUrl: string) {
             walletId: 1,
           })
           .then((address) => {
-            if (address !== lastRecvAddress) {
-              console.log('walletconnect recv currentAddress:', address);
-              lastRecvAddress = address;
-            }
-            const puzzleHash = toHexString(bech32.decode(address).data as any);
-            const addressData = { address, puzzleHash };
+              if (address !== lastRecvAddress) {
+                console.log('walletconnect recv currentAddress:', address);
+                lastRecvAddress = address;
+              }
+              const puzzleHash = toHexString(bech32.decode(address).data as any);
+              const addressData = { address, puzzleHash };
 
-          blockchainConnector.replyEmitter({
-            responseId: evt.requestId,
-	    getAddress: addressData
-	  });
-        });
+            blockchainConnector.replyEmitter({
+              responseId: evt.requestId,
+        getAddress: addressData
+      });
+    });
+    } else if (getFee) {
+        rpc.getFeeEstimate({}).then((feeResult: number) => {
+            blockchainConnector.replyEmitter({
+              responseId: evt.requestId,
+              getFee: feeResult
+      });
+    });
       } else if (getBalance) {
         rpc.getWalletBalance({
           walletId: 1

resources/gaming-fe/src/types/ChiaGaming.ts

@@ -375,6 +375,16 @@ export class ExternalBlockchainInterface {
       },
     ).then((f) => f.json());
   }
+
+  getFeeEstimate(): Promise<number> {
+    return fetch(
+      `${this.baseUrl}/get_fee_estimate?user=${this.token}`,
+      {
+        body: '',
+        method: 'POST'
+      },
+    ).then((f) => f.json());
+  }
 }
 
 function select_cards_using_bits<T>(card: T[], mask: number): T[][] {

resources/gaming-fe/src/types/rpc/GetFeeEstimate.ts

@@ -0,0 +1,4 @@
+export interface GetFeeEstimateRequest {
+}
+
+export type GetFeeEstimateResponse = number;