From ed9fc00f486222ccf285de517a2a54f0836cbfdb Mon Sep 17 00:00:00 2001
From: Richard Ramos <info@richardramos.me>
Date: Fri, 31 Aug 2018 21:16:34 -0400
Subject: [PATCH] Asking for available relayers functionality

---
 test-dapp/app/components/callgasrelayed.js |  35 ++----
 test-dapp/app/status-gas-relayer.js        | 132 +++++++++++++++++++++
 2 files changed, 145 insertions(+), 22 deletions(-)
 create mode 100644 test-dapp/app/status-gas-relayer.js

diff --git a/test-dapp/app/components/callgasrelayed.js b/test-dapp/app/components/callgasrelayed.js
index c443cce..ee246b2 100644
--- a/test-dapp/app/components/callgasrelayed.js
+++ b/test-dapp/app/components/callgasrelayed.js
@@ -15,6 +15,10 @@ import TextField from '@material-ui/core/TextField';
 import config from '../config';
 import web3 from 'Embark/web3';
 import {withStyles} from '@material-ui/core/styles';
+
+import StatusGasRelayer, {Contracts} from '../status-gas-relayer';
+
+
 const styles = theme => ({
     root: {
         width: '100%',
@@ -98,7 +102,7 @@ class CallGasRelayed extends Component {
         }
     }
 
-    obtainRelayers = event => {
+    obtainRelayers = async event => {
         event.preventDefault();
 
         const {web3, kid, skid} = this.props;
@@ -110,28 +114,15 @@ class CallGasRelayed extends Component {
         this.props.clearMessages();
         
         try {
-            const sendOptions = {
-                ttl: 1000, 
-                sig: kid,
-                powTarget: 1, 
-                powTime: 20, 
-                topic: this.state.topic,
-                symKeyID: skid,
-                payload: web3.utils.toHex({
-                    'contract': this.props.identityAddress,
-                    'address': web3.eth.defaultAccount,
-                    'action': 'availability',
-                    'gasToken': this.state.gasToken,
-                    'gasPrice': this.state.gasPrice
-                })
-            };
+            const s = new StatusGasRelayer.AvailableRelayers(Contracts.Identity, this.props.identityAddress, web3.eth.defaultAccount)
+                                          .setRelayersSymKeyID(skid)
+                                          .setAsymmetricKeyID(kid)
+                                          .setGas(this.state.gasToken, this.state.gasPrice);
+            await s.post(web3);
+            
+            console.log("Message sent");
+            this.setState({submitting: false});
 
-            web3.shh.post(sendOptions)
-            .then(() => {
-               this.setState({submitting: false});
-               console.log("Message sent");
-               return true;
-            });
         } catch(error){
             this.setState({messagingError: error.message, submitting: false});
         }
diff --git a/test-dapp/app/status-gas-relayer.js b/test-dapp/app/status-gas-relayer.js
new file mode 100644
index 0000000..1225a2b
--- /dev/null
+++ b/test-dapp/app/status-gas-relayer.js
@@ -0,0 +1,132 @@
+export const Contracts = {
+    'Identity': 'IdentityGasRelay',
+    'SNT': 'SNTController'
+};
+
+export const Functions = {
+    'Identity': {
+        'call': 'callGasRelayed',
+        'approveAndCall': 'approveAndCallGasRelayed'
+    }
+}
+
+export const Actions = {
+    'Availability': 'availability',
+    'Transaction': 'transaction'
+}
+
+const relayerSymmmetricKeyID = "0xd0d905c1c62b810b787141430417caf2b3f54cffadb395b7bb39fdeb8f17266b";
+
+class StatusGasRelayer {
+    constructor(build, web3) {
+        this.web3 = web3;
+        if (arguments.length === 2 && this.validateBuild(build)) {
+            Object.defineProperties(this, {
+                message: {
+                    value: build._getMessage(web3),
+                    writable: false
+                },
+                topic: {
+                    value: web3.utils.toHex(build.contractName).slice(0, 10),
+                    writable: false
+                },
+                kid: {
+                    value: build.kid,
+                    writable: false
+                },
+                skid: {
+                    value: build.skid,
+                    writable: false
+                }
+            });
+        }
+    }
+
+    post = async (options) => {
+        options = options || {};
+
+        let skid = options.skid || this.skid;
+        if(!skid){
+            skid = await this.web3.shh.addSymKey(relayerSymmmetricKeyID);
+        }
+
+        let kid = options.kid || this.kid;
+        if(!kid){
+            kid = await this.web3.shh.newKeyPair();
+        }
+
+        const sendOptions = {
+            ttl: options.ttl || 1000, 
+            sig: kid,
+            powTarget: options.powTarget || 1, 
+            powTime: options.powTime || 20, 
+            topic: this.topic,
+            symKeyID: skid,
+            payload: this.web3.utils.toHex(this.message)
+        };
+
+        return await web3.shh.post(sendOptions);
+    }
+
+    validateBuild = (build) => {
+       return (String(build.constructor) === String(StatusGasRelayer.AvailableRelayers));
+    }
+
+    static get AvailableRelayers() {
+       return AvailableRelayersAction;
+    }
+}
+
+class Action {
+    setGas(token, price, limit){
+        this.gasToken = token;
+        this.gasPrice = price;
+        this.gasLimit = limit;
+        return this;
+    }
+
+    setOperation(operation){
+        this.operation = operation;
+        return this;
+    }
+}
+
+class AvailableRelayersAction extends Action {
+    constructor(contractName, contractAddress, accountAddress) {
+        super();
+        this.contractName = contractName;
+        this.contractAddress = contractAddress;
+        this.accountAddress = accountAddress;
+
+        this.operation = Actions.Availability;
+
+        return this;
+    }
+
+    setRelayersSymKeyID = (skid) => {
+        this.skid = skid;
+        return this;
+    }
+
+    setAsymmetricKeyID = (kid) => {
+        this.kid = kid;
+        return this;
+    }
+
+    _getMessage = (web3) => {
+        return {
+            contract: this.contractAddress,
+            address: this.accountAddress || web3.eth.defaultAccount,
+            action: Actions.Availability,
+            gasToken: this.gasToken,
+            gasPrice: this.gasPrice
+        };
+    }
+
+    post(web3, options) {
+        const s = new StatusGasRelayer(this, web3);
+        return s.post(options);
+    }
+}
+
+export default StatusGasRelayer;
\ No newline at end of file