Added JWT identity for ios and android

android/build.gradle

@@ -39,4 +39,5 @@ dependencies {
 
   api group: 'com.zendesk', name: 'chat', version: safeExtGet('zendeskChatVersion', '3.1.0')
   api group: 'com.zendesk', name: 'messaging', version: safeExtGet('zendeskMessagingVersion', '5.1.0')
+  api group: 'com.zendesk', name: 'support', version: safeExtGet('zendeskMessagingVersion', '2.3.0')
 }

android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Thu Oct 29 18:09:13 CET 2020
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip

android/src/main/java/com/taskrabbit/zendesk/JwtAuth.java

@@ -0,0 +1,82 @@
+package com.taskrabbit.zendesk;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.io.IOException;
+
+import okhttp3.Call;
+import okhttp3.Callback;
+import okhttp3.MediaType;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+import zendesk.chat.JwtAuthenticator;
+
+class JwtAuth implements JwtAuthenticator {
+    private String alfZendeskJwtUrl;
+
+    OkHttpClient client = new OkHttpClient();
+    final MediaType JSON = MediaType.get("application/json; charset=utf-8");
+
+    JwtAuth(String alfZendeskJwtUrl) {
+        this.alfZendeskJwtUrl = alfZendeskJwtUrl;
+    }
+
+    private void retrieveToken(final JwtCallback callback) throws IOException {
+
+        RequestBody body = RequestBody.create(JSON, "{}");
+        Request request = new Request.Builder()
+                .url(alfZendeskJwtUrl)
+                .post(body)
+                .build();
+        client.newCall(request).enqueue(new Callback() {
+            @Override
+            public void onFailure( Call call,  IOException e) {
+                e.printStackTrace();
+                callback.onError();
+            }
+
+            @Override
+            public void onResponse( Call call,  Response response) throws IOException {
+                String jsonData = response.body().string();
+                try {
+                    JSONObject Jobject = new JSONObject(jsonData);
+                    String zendesk_jwt = (String) Jobject.get("jwt");
+
+                    callback.onSuccess(zendesk_jwt);
+
+                } catch (JSONException e) {
+                    e.printStackTrace();
+                    callback.onError();
+                }
+            }
+        });
+    }
+
+    @Override
+    public void getToken(final JwtCompletion jwtCompletion) {
+        try {
+            retrieveToken(new JwtCallback() {
+                @Override
+                public void onSuccess(String token) {
+                    jwtCompletion.onTokenLoaded(token);
+                }
+
+                @Override
+                public void onError() {
+                    jwtCompletion.onError();
+                }
+            });
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    interface JwtCallback {
+        void onSuccess(String token);
+
+        void onError();
+    }
+}