feature: notify rn sdk whenever chainId or account changes (#190)

* feature: notify rn sdk whenever chainId or account changes

* chore: bump ios sdk version

Author: elefantel

README.md

@@ -54,7 +54,7 @@ Alternatively, you can add the URL directly in your project's package file:
 dependencies: [
     .package(
         url: "https://github.com/MetaMask/metamask-ios-sdk",
-        from: "0.8.8"
+        from: "0.8.9"
     )
 ]
 ```

Sources/metamask-ios-sdk/Classes/Extensions/Notification.swift

@@ -0,0 +1,10 @@
+//
+//  Notification.swift
+//
+
+import Foundation
+
+public extension Notification.Name {
+    static let MetaMaskAccountChanged = Notification.Name("MetaMaskAccountChanged")
+    static let MetaMaskChainIdChanged = Notification.Name("MetaMaskChainChanged")
+}

Sources/metamask-ios-sdk/Classes/SDK/MetaMaskSDK.swift

@@ -214,11 +214,13 @@ public extension MetaMaskSDK {
 extension MetaMaskSDK: EthereumEventsDelegate {
     func chainIdChanged(_ chainId: String) {
         self.chainId = chainId
+        NotificationCenter.default.post(name: .MetaMaskChainIdChanged, object: nil, userInfo: ["chainId": chainId])
     }
 
     func accountChanged(_ account: String) {
         self.account = account
         connected = true
+        NotificationCenter.default.post(name: .MetaMaskAccountChanged, object: nil, userInfo: ["account": account])
     }
 }
 

metamask-ios-sdk.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'metamask-ios-sdk'
-  s.version          = '0.8.8'
+  s.version          = '0.8.9'
   s.summary          = 'Enable users to easily connect with their MetaMask Mobile wallet.'
   s.swift_version    = '5.5'