Implement Notifications API

app/build.gradle

@@ -51,5 +51,6 @@ dependencies {
     compile "com.squareup.okhttp3:okhttp:${okhttpVersion}"
     compile "com.squareup.okhttp3:logging-interceptor:${okhttpVersion}"
     compile "com.squareup.picasso:picasso:${picassoVersion}"
+    implementation 'com.android.support:support-v4:25.4.0'
 }
 apply plugin: 'com.google.gms.google-services'

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/Constants.java

+package in.ac.iitb.gymkhana.iitbapp;
+
+public class Constants {
+    public static final String NOTIFICATIONS_RESPONSE_JSON = "notifications_json";
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/MainActivity.java

@@ -18,6 +18,15 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.widget.Toast;
 
+import com.google.gson.Gson;
+
+import java.util.List;
+
+import in.ac.iitb.gymkhana.iitbapp.api.RetrofitInterface;
+import in.ac.iitb.gymkhana.iitbapp.api.ServiceGenerator;
+import in.ac.iitb.gymkhana.iitbapp.api.model.AppNotification;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NotificationsRequest;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NotificationsResponse;
 import in.ac.iitb.gymkhana.iitbapp.fragment.AboutFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.CMSFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.CalendarFragment;
@@ -27,8 +36,12 @@ import in.ac.iitb.gymkhana.iitbapp.fragment.GCRankingsFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.MapFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.MessMenuFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.MyEventsFragment;
+import in.ac.iitb.gymkhana.iitbapp.fragment.NotificationsFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.PTCellFragment;
 import in.ac.iitb.gymkhana.iitbapp.fragment.TimetableFragment;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
 
 
 public class MainActivity extends AppCompatActivity
@@ -57,7 +70,33 @@ public class MainActivity extends AppCompatActivity
         NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
         navigationView.setNavigationItemSelectedListener(this);
 
+        fetchNotifications();
+    }
 
+    private void fetchNotifications() {
+        NotificationsRequest notificationsRequest = new NotificationsRequest(0, 20);
+        RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
+        retrofitInterface.getNotifications(notificationsRequest).enqueue(new Callback<NotificationsResponse>() {
+            @Override
+            public void onResponse(Call<NotificationsResponse> call, Response<NotificationsResponse> response) {
+                if (response.isSuccessful()) {
+                    NotificationsResponse notificationsResponse = response.body();
+                    String notificationsResponseJson = new Gson().toJson(notificationsResponse);
+                    Bundle bundle = new Bundle();
+                    bundle.putString(Constants.NOTIFICATIONS_RESPONSE_JSON, notificationsResponseJson);
+                    NotificationsFragment notificationsFragment = new NotificationsFragment();
+                    notificationsFragment.setArguments(bundle);
+                    updateFragment(notificationsFragment);
+
+                }
+                //Server Error
+            }
+
+            @Override
+            public void onFailure(Call<NotificationsResponse> call, Throwable t) {
+                //Network Error
+            }
+        });
     }
 
     @Override
@@ -164,8 +203,8 @@ public class MainActivity extends AppCompatActivity
         transaction.replace(R.id.framelayout_for_fragment, fragment, fragment.getTag());
         transaction.commit();
     }
-    
-public void onRequestPermissionsResult(int requestCode,
+
+    public void onRequestPermissionsResult(int requestCode,
                                            String[] permissions,
                                            int[] grantResults) {
         if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/adapter/NotificationsAdapter.java

+package in.ac.iitb.gymkhana.iitbapp.adapter;
+
+import android.content.Context;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import java.util.List;
+
+import in.ac.iitb.gymkhana.iitbapp.ItemClickListener;
+import in.ac.iitb.gymkhana.iitbapp.R;
+import in.ac.iitb.gymkhana.iitbapp.api.model.AppNotification;
+
+public class NotificationsAdapter extends RecyclerView.Adapter<NotificationsAdapter.Viewholder> {
+    private List<AppNotification> notifications;
+    private Context context;
+    private ItemClickListener itemClickListener;
+
+    public NotificationsAdapter(List<AppNotification> notifications, ItemClickListener itemClickListener) {
+        this.notifications = notifications;
+        this.itemClickListener = itemClickListener;
+    }
+
+    @Override
+    public Viewholder onCreateViewHolder(ViewGroup viewGroup, int i) {
+        context = viewGroup.getContext();
+        LayoutInflater inflater = LayoutInflater.from(context);
+        View notificationView = inflater.inflate(R.layout.notification, viewGroup, false);
+
+        final Viewholder notificationsViewHolder = new Viewholder(notificationView);
+        notificationView.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                itemClickListener.onItemClick(v, notificationsViewHolder.getAdapterPosition());
+            }
+        });
+        return notificationsViewHolder;
+    }
+
+    @Override
+    public void onBindViewHolder(Viewholder viewholder, int i) {
+        AppNotification appNotification = notifications.get(i);
+        viewholder.notificationTitle.setText(appNotification.getNotificationName());
+    }
+
+    @Override
+    public int getItemCount() {
+        return notifications.size();
+    }
+
+    public class Viewholder extends RecyclerView.ViewHolder {
+        private TextView notificationTitle;
+
+        public Viewholder(View itemView) {
+            super(itemView);
+
+            notificationTitle = (TextView) itemView.findViewById(R.id.notification_title);
+        }
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/RetrofitInterface.java

@@ -4,16 +4,19 @@ import in.ac.iitb.gymkhana.iitbapp.api.model.LoginRequest;
 import in.ac.iitb.gymkhana.iitbapp.api.model.LoginResponse;
 import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedRequest;
 import in.ac.iitb.gymkhana.iitbapp.api.model.NewsFeedResponse;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NotificationsRequest;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NotificationsResponse;
 import retrofit2.Call;
 import retrofit2.http.Body;
-import retrofit2.http.GET;
 import retrofit2.http.POST;
-import retrofit2.http.PUT;
 
 public interface RetrofitInterface {
     @POST("login/")
     Call<LoginResponse> login(@Body LoginRequest loginRequest);
 
-    @GET("getNewsFeed/")
+    @POST("getNewsFeed/")
     Call<NewsFeedResponse> getNewsFeed(@Body NewsFeedRequest newsFeedRequest);
+
+    @POST("getNotifications/")
+    Call<NotificationsResponse> getNotifications(@Body NotificationsRequest notificationsRequest);
 }

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/model/AppNotification.java

+package in.ac.iitb.gymkhana.iitbapp.api.model;
+
+import com.google.gson.annotations.SerializedName;
+
+public class AppNotification {
+    @SerializedName("notification_type")
+    private int notificationType;
+    @SerializedName("notification_id")
+    private String notificationId;
+    @SerializedName("notification_related_id")
+    private String notificationRelatedId;
+    @SerializedName("notification_name")
+    private String notificationName;
+    @SerializedName("notification_description")
+    private String notificationDescription;
+    @SerializedName("notification_image")
+    private String notificationImage;
+
+    public AppNotification(int notificationType, String notificationId, String notificationRelatedId, String notificationName, String notificationDescription, String notificationImage) {
+        this.notificationType = notificationType;
+        this.notificationId = notificationId;
+        this.notificationRelatedId = notificationRelatedId;
+        this.notificationName = notificationName;
+        this.notificationDescription = notificationDescription;
+        this.notificationImage = notificationImage;
+    }
+
+    public int getNotificationType() {
+        return notificationType;
+    }
+
+    public void setNotificationType(int notificationType) {
+        this.notificationType = notificationType;
+    }
+
+    public String getNotificationId() {
+        return notificationId;
+    }
+
+    public void setNotificationId(String notificationId) {
+        this.notificationId = notificationId;
+    }
+
+    public String getNotificationRelatedId() {
+        return notificationRelatedId;
+    }
+
+    public void setNotificationRelatedId(String notificationRelatedId) {
+        this.notificationRelatedId = notificationRelatedId;
+    }
+
+    public String getNotificationName() {
+        return notificationName;
+    }
+
+    public void setNotificationName(String notificationName) {
+        this.notificationName = notificationName;
+    }
+
+    public String getNotificationDescription() {
+        return notificationDescription;
+    }
+
+    public void setNotificationDescription(String notificationDescription) {
+        this.notificationDescription = notificationDescription;
+    }
+
+    public String getNotificationImage() {
+        return notificationImage;
+    }
+
+    public void setNotificationImage(String notificationImage) {
+        this.notificationImage = notificationImage;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/model/NotificationsRequest.java

+package in.ac.iitb.gymkhana.iitbapp.api.model;
+
+public class NotificationsRequest {
+    private int from;
+    private int to;
+
+    public NotificationsRequest(int from, int to) {
+        this.from = from;
+        this.to = to;
+    }
+
+    public int getFrom() {
+        return from;
+    }
+
+    public void setFrom(int from) {
+        this.from = from;
+    }
+
+    public int getTo() {
+        return to;
+    }
+
+    public void setTo(int to) {
+        this.to = to;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/api/model/NotificationsResponse.java

+package in.ac.iitb.gymkhana.iitbapp.api.model;
+
+import java.util.List;
+
+public class NotificationsResponse {
+    private String result;
+    private List<AppNotification> notifications;
+
+    public NotificationsResponse(String result, List<AppNotification> notifications) {
+        this.result = result;
+        this.notifications = notifications;
+    }
+
+    public String getResult() {
+        return result;
+    }
+
+    public void setResult(String result) {
+        this.result = result;
+    }
+
+    public List<AppNotification> getNotifications() {
+        return notifications;
+    }
+
+    public void setNotifications(List<AppNotification> notifications) {
+        this.notifications = notifications;
+    }
+}

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/fragment/FeedFragment.java

@@ -48,7 +48,7 @@ public class FeedFragment extends Fragment {
 
         NewsFeedRequest newsFeedRequest = new NewsFeedRequest(NewsFeedRequest.FOLLOWED, 0, 20);
         RetrofitInterface retrofitInterface = ServiceGenerator.createService(RetrofitInterface.class);
-        retrofitInterface.getNewsFeed().enqueue(new Callback<NewsFeedResponse>() {
+        retrofitInterface.getNewsFeed(newsFeedRequest).enqueue(new Callback<NewsFeedResponse>() {
             @Override
             public void onResponse(Call<NewsFeedResponse> call, Response<NewsFeedResponse> response) {
                 if (response.isSuccessful()) {

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/fragment/NotificationsFragment.java

+package in.ac.iitb.gymkhana.iitbapp.fragment;
+
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.google.gson.Gson;
+
+import java.util.List;
+
+import in.ac.iitb.gymkhana.iitbapp.Constants;
+import in.ac.iitb.gymkhana.iitbapp.ItemClickListener;
+import in.ac.iitb.gymkhana.iitbapp.R;
+import in.ac.iitb.gymkhana.iitbapp.adapter.NotificationsAdapter;
+import in.ac.iitb.gymkhana.iitbapp.api.model.AppNotification;
+import in.ac.iitb.gymkhana.iitbapp.api.model.NotificationsResponse;
+
+/**
+ * A simple {@link Fragment} subclass.
+ */
+public class NotificationsFragment extends Fragment {
+
+    RecyclerView notificationsRecyclerView;
+
+    public NotificationsFragment() {
+        // Required empty public constructor
+    }
+
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_notifications, container, false);
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        Bundle bundle = getArguments();
+        String notificationsResponseJson = bundle.getString(Constants.NOTIFICATIONS_RESPONSE_JSON);
+        NotificationsResponse notificationsResponse = new Gson().fromJson(notificationsResponseJson, NotificationsResponse.class);
+        showNotifications(notificationsResponse);
+    }
+
+    private void showNotifications(NotificationsResponse notificationsResponse) {
+        List<AppNotification> notifications = notificationsResponse.getNotifications();
+        NotificationsAdapter notificationsAdapter = new NotificationsAdapter(notifications, new ItemClickListener() {
+            @Override
+            public void onItemClick(View v, int position) {
+                //TODO: What to do?
+            }
+        });
+        notificationsRecyclerView = (RecyclerView) getActivity().findViewById(R.id.notifications_recycler_view);
+        notificationsRecyclerView.setAdapter(notificationsAdapter);
+        notificationsRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+    }
+}

app/src/main/res/layout/fragment_notifications.xml

+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="in.ac.iitb.gymkhana.iitbapp.fragment.NotificationsFragment">
+
+    <android.support.v7.widget.RecyclerView
+        android:id="@+id/notifications_recycler_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</FrameLayout>

app/src/main/res/layout/notification.xml

+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/notification_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>
\ No newline at end of file

app/src/main/res/menu/main.xml

 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_notifications"
+        android:orderInCategory="1"
+        android:icon="@drawable/ic_notifications_black_24dp"
+        android:title="Notifications"
+        app:showAsAction="always" />
+
     <item
         android:id="@+id/action_settings"
         android:orderInCategory="100"