restore platform/extension.js

app/scripts/platforms/extension.js

@@ -1,4 +1,5 @@
 const extension = require('extensionizer')
+const explorerLink = require('etherscan-link').createExplorerLink
 
 class ExtensionPlatform {
 
@@ -23,8 +24,11 @@ class ExtensionPlatform {
     return extension.runtime.getManifest().version
   }
 
-  openExtensionInBrowser () {
-    const extensionURL = extension.runtime.getURL('home.html')
+  openExtensionInBrowser (route = null) {
+    let extensionURL = extension.runtime.getURL('home.html')
+    if (route) {
+      extensionURL += `#${route}`
+    }
     this.openWindow({ url: extensionURL })
   }
 
@@ -38,10 +42,58 @@ class ExtensionPlatform {
     }
   }
 
-  addMessageListener (cb) {
-    extension.runtime.onMessage.addListener(cb)
+  showTransactionNotification (txMeta) {
+
+    const status = txMeta.status
+    if (status === 'confirmed') {
+      this._showConfirmedTransaction(txMeta)
+    } else if (status === 'failed') {
+      this._showFailedTransaction(txMeta)
+    }
+  }
+
+  _showConfirmedTransaction (txMeta) {
+
+    this._subscribeToNotificationClicked()
+
+    const url = explorerLink(txMeta.hash, parseInt(txMeta.metamaskNetworkId))
+    const nonce = parseInt(txMeta.txParams.nonce, 16)
+
+    const title = 'Confirmed transaction'
+    const message = `Transaction ${nonce} confirmed! View on EtherScan`
+    this._showNotification(title, message, url)
   }
 
+  _showFailedTransaction (txMeta) {
+
+    const nonce = parseInt(txMeta.txParams.nonce, 16)
+    const title = 'Failed transaction'
+    const message = `Transaction ${nonce} failed! ${txMeta.err.message}`
+    this._showNotification(title, message)
+  }
+
+  _showNotification (title, message, url) {
+    extension.notifications.create(
+      url,
+      {
+      'type': 'basic',
+      'title': title,
+      'iconUrl': extension.extension.getURL('../../images/icon-64.png'),
+      'message': message,
+      })
+  }
+
+  _subscribeToNotificationClicked () {
+    if (!extension.notifications.onClicked.hasListener(this._viewOnEtherScan)) {
+      extension.notifications.onClicked.addListener(this._viewOnEtherScan)
+    }
+  }
+
+  _viewOnEtherScan (txId) {
+    if (txId.startsWith('http://')) {
+      global.metamaskController.platform.openWindow({ url: txId })
+    }
+  }
 }
 
 module.exports = ExtensionPlatform