move to using go contract + go server

based on contracts found here: https://github.com/loomnetwork/tiles-chain

app/client_contractgo.js

@@ -0,0 +1,45 @@
+import {
+  NonceTxMiddleware, SignedTxMiddleware, Client,
+  Contract, Address, LocalAddress, CryptoUtils
+} from 'loom-js'
+
+import { TileMapState, TileMapTx } from './proto/dots_pb'
+
+export default class ContractClient {
+  constructor() {}
+
+  async createContract() {
+    const privateKey = CryptoUtils.generatePrivateKey()
+    const publicKey = CryptoUtils.publicKeyFromPrivateKey(privateKey)
+
+    const client = new Client(
+      'default',
+      'wss://draw.status.im/websocket',
+      'wss://draw.status.im/queryws',
+    )
+    // required middleware
+    client.txMiddleware = [
+      new NonceTxMiddleware(publicKey, client),
+      new SignedTxMiddleware(privateKey)
+    ]
+    // address of the `TileChain` smart contract on the Loom DAppChain
+    const contractAddr = await client.getContractAddressAsync('TileChain')
+
+    this.callerAddress = new Address(client.chainId, LocalAddress.fromPublicKey(publicKey))
+    this.contract = new Contract({
+      contractAddr,
+      callerAddr: this.callerAddress,
+      client
+    })
+  }
+
+  async setTileMapState(data) {
+    const setTileMapState = new TileMapTx()
+    setTileMapState.setData(data)
+    await this.contract.callAsync('SetTileMapState', setTileMapState)
+  }
+
+  async getTileMapState() {
+    return await this.contract.staticCallAsync('GetTileMapState', new TileMapState(), new TileMapState())
+  }
+}

app/components/draw/DrawField.js

@@ -322,6 +322,7 @@ class SketchFieldDemo extends React.Component {
                     id='lineColor' color={this.state.lineColor}
                     onChange={(color) => this.setState({lineColor: color.hex})}/>
                 </CardContent>
+                <Button onClick={this.props.request}>Get Content</Button>
               </Card>
             </div>
           </div>

app/dapp.js

@@ -5,7 +5,8 @@ import EmbarkJS from 'Embark/EmbarkJS';
 import SNT from  'Embark/contracts/SNT';
 import Web3Render from './components/standard/Web3Render';
 import DrawField from './components/draw/DrawField';
-import ContractClient, { createContract } from './contract_client'
+//import ContractClient, { createContract } from './contract_client'
+import ContractClient from './client_contractgo'
 window['SNT'] = SNT;
 
 import './dapp.css';
@@ -34,7 +35,8 @@ class App extends React.Component {
 
   async createContract() {
     const { tileStateUpdateHandler } = this;
-    this.contractClient = await createContract(tileStateUpdateHandler);
+    this.contractClient = await new ContractClient();
+    await this.contractClient.createContract();
     this.requestUpdateTilesOnCanvas();
   }
 
@@ -45,15 +47,17 @@ class App extends React.Component {
   }
 
   async requestUpdateTilesOnCanvas() {
-    const tileMapState = await this.contractClient.methods.GetTileMapState().call()
-    if (tileMapState) {
-      const canvasState = JSON.parse(tileMapState);
+    const tileMapState = await this.contractClient.getTileMapState()
+    const tileData = tileMapState.getData()
+    debugger
+    if (tileData) {
+      const canvasState = JSON.parse(tileData);
       this.setState({ canvasState });
     }
   }
 
   setTileMapState = async (data) => {
-    await this.contractClient.methods.SetTileMapState(data).send()
+    await this.contractClient.setTileMapState(JSON.stringify(data))
   }
 
   setAccount(_account){
@@ -73,7 +77,7 @@ class App extends React.Component {
     const { web3Provider, loading, canvasState } = this.state;
     return (
       <Web3Render ready={web3Provider}>
-        <DrawField setTileMapState={setTileMapState} canvasState={canvasState} />
+        <DrawField setTileMapState={setTileMapState} canvasState={canvasState} request={this.requestUpdateTilesOnCanvas.bind(this)}/>
       </Web3Render>
     );
   }

app/proto/dots_pb.js

@@ -0,0 +1,300 @@
+/**
+ * @fileoverview
+ * @enhanceable
+ * @suppress {messageConventions} JS Compiler reports an error if a variable or
+ *     field starts with 'MSG_' and isn't a translatable message.
+ * @public
+ */
+// GENERATED CODE -- DO NOT EDIT!
+
+var jspb = require('google-protobuf');
+var goog = jspb;
+var global = Function('return this')();
+
+goog.exportSymbol('proto.TileMapState', null, global);
+goog.exportSymbol('proto.TileMapTx', null, global);
+
+/**
+ * Generated by JsPbCodeGenerator.
+ * @param {Array=} opt_data Optional initial data array, typically from a
+ * server response, or constructed directly in Javascript. The array is used
+ * in place and becomes part of the constructed object. It is not cloned.
+ * If no data is provided, the constructed object will be empty, but still
+ * valid.
+ * @extends {jspb.Message}
+ * @constructor
+ */
+proto.TileMapTx = function(opt_data) {
+  jspb.Message.initialize(this, opt_data, 0, -1, null, null);
+};
+goog.inherits(proto.TileMapTx, jspb.Message);
+if (goog.DEBUG && !COMPILED) {
+  proto.TileMapTx.displayName = 'proto.TileMapTx';
+}
+
+
+if (jspb.Message.GENERATE_TO_OBJECT) {
+/**
+ * Creates an object representation of this proto suitable for use in Soy templates.
+ * Field names that are reserved in JavaScript and will be renamed to pb_name.
+ * To access a reserved field use, foo.pb_<name>, eg, foo.pb_default.
+ * For the list of reserved names please see:
+ *     com.google.apps.jspb.JsClassTemplate.JS_RESERVED_WORDS.
+ * @param {boolean=} opt_includeInstance Whether to include the JSPB instance
+ *     for transitional soy proto support: http://goto/soy-param-migration
+ * @return {!Object}
+ */
+proto.TileMapTx.prototype.toObject = function(opt_includeInstance) {
+  return proto.TileMapTx.toObject(opt_includeInstance, this);
+};
+
+
+/**
+ * Static version of the {@see toObject} method.
+ * @param {boolean|undefined} includeInstance Whether to include the JSPB
+ *     instance for transitional soy proto support:
+ *     http://goto/soy-param-migration
+ * @param {!proto.TileMapTx} msg The msg instance to transform.
+ * @return {!Object}
+ * @suppress {unusedLocalVariables} f is only used for nested messages
+ */
+proto.TileMapTx.toObject = function(includeInstance, msg) {
+  var f, obj = {
+    data: jspb.Message.getFieldWithDefault(msg, 1, "")
+  };
+
+  if (includeInstance) {
+    obj.$jspbMessageInstance = msg;
+  }
+  return obj;
+};
+}
+
+
+/**
+ * Deserializes binary data (in protobuf wire format).
+ * @param {jspb.ByteSource} bytes The bytes to deserialize.
+ * @return {!proto.TileMapTx}
+ */
+proto.TileMapTx.deserializeBinary = function(bytes) {
+  var reader = new jspb.BinaryReader(bytes);
+  var msg = new proto.TileMapTx;
+  return proto.TileMapTx.deserializeBinaryFromReader(msg, reader);
+};
+
+
+/**
+ * Deserializes binary data (in protobuf wire format) from the
+ * given reader into the given message object.
+ * @param {!proto.TileMapTx} msg The message object to deserialize into.
+ * @param {!jspb.BinaryReader} reader The BinaryReader to use.
+ * @return {!proto.TileMapTx}
+ */
+proto.TileMapTx.deserializeBinaryFromReader = function(msg, reader) {
+  while (reader.nextField()) {
+    if (reader.isEndGroup()) {
+      break;
+    }
+    var field = reader.getFieldNumber();
+    switch (field) {
+    case 1:
+      var value = /** @type {string} */ (reader.readString());
+      msg.setData(value);
+      break;
+    default:
+      reader.skipField();
+      break;
+    }
+  }
+  return msg;
+};
+
+
+/**
+ * Serializes the message to binary data (in protobuf wire format).
+ * @return {!Uint8Array}
+ */
+proto.TileMapTx.prototype.serializeBinary = function() {
+  var writer = new jspb.BinaryWriter();
+  proto.TileMapTx.serializeBinaryToWriter(this, writer);
+  return writer.getResultBuffer();
+};
+
+
+/**
+ * Serializes the given message to binary data (in protobuf wire
+ * format), writing to the given BinaryWriter.
+ * @param {!proto.TileMapTx} message
+ * @param {!jspb.BinaryWriter} writer
+ * @suppress {unusedLocalVariables} f is only used for nested messages
+ */
+proto.TileMapTx.serializeBinaryToWriter = function(message, writer) {
+  var f = undefined;
+  f = message.getData();
+  if (f.length > 0) {
+    writer.writeString(
+      1,
+      f
+    );
+  }
+};
+
+
+/**
+ * optional string data = 1;
+ * @return {string}
+ */
+proto.TileMapTx.prototype.getData = function() {
+  return /** @type {string} */ (jspb.Message.getFieldWithDefault(this, 1, ""));
+};
+
+
+/** @param {string} value */
+proto.TileMapTx.prototype.setData = function(value) {
+  jspb.Message.setProto3StringField(this, 1, value);
+};
+
+
+
+/**
+ * Generated by JsPbCodeGenerator.
+ * @param {Array=} opt_data Optional initial data array, typically from a
+ * server response, or constructed directly in Javascript. The array is used
+ * in place and becomes part of the constructed object. It is not cloned.
+ * If no data is provided, the constructed object will be empty, but still
+ * valid.
+ * @extends {jspb.Message}
+ * @constructor
+ */
+proto.TileMapState = function(opt_data) {
+  jspb.Message.initialize(this, opt_data, 0, -1, null, null);
+};
+goog.inherits(proto.TileMapState, jspb.Message);
+if (goog.DEBUG && !COMPILED) {
+  proto.TileMapState.displayName = 'proto.TileMapState';
+}
+
+
+if (jspb.Message.GENERATE_TO_OBJECT) {
+/**
+ * Creates an object representation of this proto suitable for use in Soy templates.
+ * Field names that are reserved in JavaScript and will be renamed to pb_name.
+ * To access a reserved field use, foo.pb_<name>, eg, foo.pb_default.
+ * For the list of reserved names please see:
+ *     com.google.apps.jspb.JsClassTemplate.JS_RESERVED_WORDS.
+ * @param {boolean=} opt_includeInstance Whether to include the JSPB instance
+ *     for transitional soy proto support: http://goto/soy-param-migration
+ * @return {!Object}
+ */
+proto.TileMapState.prototype.toObject = function(opt_includeInstance) {
+  return proto.TileMapState.toObject(opt_includeInstance, this);
+};
+
+
+/**
+ * Static version of the {@see toObject} method.
+ * @param {boolean|undefined} includeInstance Whether to include the JSPB
+ *     instance for transitional soy proto support:
+ *     http://goto/soy-param-migration
+ * @param {!proto.TileMapState} msg The msg instance to transform.
+ * @return {!Object}
+ * @suppress {unusedLocalVariables} f is only used for nested messages
+ */
+proto.TileMapState.toObject = function(includeInstance, msg) {
+  var f, obj = {
+    data: jspb.Message.getFieldWithDefault(msg, 1, "")
+  };
+
+  if (includeInstance) {
+    obj.$jspbMessageInstance = msg;
+  }
+  return obj;
+};
+}
+
+
+/**
+ * Deserializes binary data (in protobuf wire format).
+ * @param {jspb.ByteSource} bytes The bytes to deserialize.
+ * @return {!proto.TileMapState}
+ */
+proto.TileMapState.deserializeBinary = function(bytes) {
+  var reader = new jspb.BinaryReader(bytes);
+  var msg = new proto.TileMapState;
+  return proto.TileMapState.deserializeBinaryFromReader(msg, reader);
+};
+
+
+/**
+ * Deserializes binary data (in protobuf wire format) from the
+ * given reader into the given message object.
+ * @param {!proto.TileMapState} msg The message object to deserialize into.
+ * @param {!jspb.BinaryReader} reader The BinaryReader to use.
+ * @return {!proto.TileMapState}
+ */
+proto.TileMapState.deserializeBinaryFromReader = function(msg, reader) {
+  while (reader.nextField()) {
+    if (reader.isEndGroup()) {
+      break;
+    }
+    var field = reader.getFieldNumber();
+    switch (field) {
+    case 1:
+      var value = /** @type {string} */ (reader.readString());
+      msg.setData(value);
+      break;
+    default:
+      reader.skipField();
+      break;
+    }
+  }
+  return msg;
+};
+
+
+/**
+ * Serializes the message to binary data (in protobuf wire format).
+ * @return {!Uint8Array}
+ */
+proto.TileMapState.prototype.serializeBinary = function() {
+  var writer = new jspb.BinaryWriter();
+  proto.TileMapState.serializeBinaryToWriter(this, writer);
+  return writer.getResultBuffer();
+};
+
+
+/**
+ * Serializes the given message to binary data (in protobuf wire
+ * format), writing to the given BinaryWriter.
+ * @param {!proto.TileMapState} message
+ * @param {!jspb.BinaryWriter} writer
+ * @suppress {unusedLocalVariables} f is only used for nested messages
+ */
+proto.TileMapState.serializeBinaryToWriter = function(message, writer) {
+  var f = undefined;
+  f = message.getData();
+  if (f.length > 0) {
+    writer.writeString(
+      1,
+      f
+    );
+  }
+};
+
+
+/**
+ * optional string data = 1;
+ * @return {string}
+ */
+proto.TileMapState.prototype.getData = function() {
+  return /** @type {string} */ (jspb.Message.getFieldWithDefault(this, 1, ""));
+};
+
+
+/** @param {string} value */
+proto.TileMapState.prototype.setData = function(value) {
+  jspb.Message.setProto3StringField(this, 1, value);
+};
+
+
+goog.object.extend(exports, proto);

package.json

@@ -30,7 +30,7 @@
     "formik": "^0.11.11",
     "jquery": "^3.3.1",
     "lodash": "^4.17.10",
-    "loom-js": "^1.14.0",
+    "loom-js": "^1.17.0",
     "openzeppelin-solidity": "1.10.0",
     "react": "^16.3.2",
     "react-blockies": "^1.3.0",