notify to change selected network

app/routes/application.js

@@ -7,19 +7,55 @@ export default Route.extend({
   beforeModel(transition) {
     const kredits = this.kredits;
 
-    return kredits.setup().then(() => {
-      kredits.get('kredits').preflightChecks().catch((error) => {
-        console.error('Kredits preflight check failed!');
-        console.error(error);
-      });
-      if (kredits.get('accountNeedsUnlock')) {
-        if (confirm('It looks like you have an Ethereum wallet available. Please unlock your account.')) {
-          transition.retry();
+    let selectedNetworkId = window.ethereum.networkVersion;
+    let kreditsNetwork = kredits.getKreditsDeployedNetwork();
+    let kreditsNetworkName;
+
+    switch(kreditsNetwork) {
+      case '1':
+        kreditsNetworkName = "Main";
+        break;
+      case '2':
+        kreditsNetworkName = "Morden Test";
+        break;
+      case '3':
+         kreditsNetworkName = "Ropsten Test";
+        break;
+      case '4':
+         kreditsNetworkName = "Rinkeby Test";
+        break;
+      case '42':
+         kreditsNetworkName = "Kovan Test";
+        break;
+      default:
+        kreditsNetworkName = "Rinkeby Test";
+    }
+
+    if(selectedNetworkId == kreditsNetwork) {
+      return kredits.setup().then(() => {
+        kredits.get('kredits').preflightChecks().catch((error) => {
+          console.error('Kredits preflight check failed!');
+          console.error(error);
+        });
+        if (kredits.get('accountNeedsUnlock')) {
+          if (confirm('It looks like you have an Ethereum wallet available. Please unlock your account.')) {
+            transition.retry();
+          }
         }
+      }).catch((error) => {
+        console.log('Error initializing Kredits', error);
+      });
+    }
+    else {
+      //need to better display this one maybe
+      if(confirm(`Please change to ${kreditsNetworkName} network!`)) {
+        transition.abort();
       }
-    }).catch((error) => {
-      console.log('Error initializing Kredits', error);
-    });
+    }
+
+    window.ethereum.on('networkChanged', function() {
+      transition.retry();
+    })
   },
 
   afterModel() {

app/services/kredits.js

@@ -136,6 +136,10 @@ export default Service.extend({
     });
   },
 
+  getKreditsDeployedNetwork() {
+    return Kredits.availableNetworks();
+  },
+
   setup () {
     return this.getEthProvider().then((providerAndSigner) => {
       let kredits = new Kredits(providerAndSigner.ethProvider, providerAndSigner.ethSigner, {