Init mess menu widget

app/src/main/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-
     package="app.insti">
 
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
@@ -10,29 +9,38 @@
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
     <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.CAMERA" />
+
     <uses-feature android:name="android.hardware.camera" />
 
     <application
+        android:name=".InstiAppApplication"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher_round"
         android:label="@string/app_name"
+        android:networkSecurityConfig="@xml/network_security_config"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/AppTheme"
-        android:name="app.insti.InstiAppApplication"
-        android:networkSecurityConfig="@xml/network_security_config">
+        android:theme="@style/AppTheme">
+        <receiver android:name=".widget.MessMenuWidget">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/mess_menu_widget_info" />
+        </receiver>
 
         <meta-data
             android:name="com.google.android.gms.version"
             android:value="@integer/google_play_services_version" />
-
         <meta-data
             android:name="com.google.android.geo.API_KEY"
             android:value="@string/google_maps_api_key" />
 
-        <uses-library android:name="org.apache.http.legacy" android:required="false" />
-
-        <!-- FCM styling -->
+        <uses-library
+            android:name="org.apache.http.legacy"
+            android:required="false" /> <!-- FCM styling -->
         <meta-data
             android:name="com.google.firebase.messaging.default_notification_icon"
             android:resource="@drawable/ic_lotusgray" />
@@ -89,24 +97,36 @@
                     android:pathPattern="/map/.*"
                     android:scheme="https" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <data
+                    android:host="insti.app"
+                    android:pathPattern="/mess"
+                    android:scheme="https" />
+            </intent-filter>
         </activity>
         <activity
             android:name=".activity.LoginActivity"
             android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
-
             <intent-filter>
-                <action android:name="android.intent.action.VIEW"/>
-                <category android:name="android.intent.category.DEFAULT"/>
-                <category android:name="android.intent.category.BROWSABLE"/>
+                <action android:name="android.intent.action.VIEW" />
+
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
                 <data
                     android:host="insti.app"
-                    android:scheme="instiapp"/>
+                    android:scheme="instiapp" />
             </intent-filter>
-
         </activity>
 
         <service android:name=".InstiAppFirebaseMessagingService">
@@ -117,18 +137,16 @@
 
         <receiver android:name=".NotificationBroadcastReceiver">
             <intent-filter>
-                <action android:name="notification_cancelled"/>
+                <action android:name="notification_cancelled" />
             </intent-filter>
         </receiver>
 
         <meta-data
             android:name="com.google.firebase.messaging.default_notification_channel_id"
             android:value="@string/default_notification_channel_id" />
-
         <meta-data
             android:name="com.google.android.gms.vision.DEPENDENCIES"
             android:value="barcode" />
-
     </application>
 
 </manifest>
\ No newline at end of file

app/src/main/java/app/insti/Constants.java

@@ -60,6 +60,7 @@ public class Constants {
     public static final String DATA_TYPE_NEWS = "newsentry";
     public static final String DATA_TYPE_PT = "blogentry";
     public static final String DATA_TYPE_MAP= "map";
+    public static final String DATA_TYPE_MESS = "mess";
 
     public static final String CARD_TYPE_TITLE = "card_type_title";
     public static final String CARD_TYPE_BODY_HEAD = "card_type_body_head";

app/src/main/java/app/insti/SessionManager.java

@@ -47,6 +47,10 @@ public class SessionManager {
         return pref.getString(Constants.USER_ID, "");
     }
 
+    public User getCurrentUser() {
+        return User.fromString(pref.getString(Constants.CURRENT_USER, ""));
+    }
+
     public String getSessionID() {
         return pref.getString(Constants.SESSION_ID, "");
     }

app/src/main/java/app/insti/Utils.java

@@ -295,4 +295,25 @@ public final class Utils {
         } catch (NoSuchFieldException | IllegalAccessException ignored) {}
         return TAG;
     }
+
+    public static String generateDayString(int day) {
+        switch (day) {
+            case 1:
+                return "Monday";
+            case 2:
+                return "Tuesday";
+            case 3:
+                return "Wednesday";
+            case 4:
+                return "Thursday";
+            case 5:
+                return "Friday";
+            case 6:
+                return "Saturday";
+            case 7:
+                return "Sunday";
+            default:
+                throw new IndexOutOfBoundsException("DayIndexOutOfBounds: " + day);
+        }
+    }
 }

app/src/main/java/app/insti/activity/MainActivity.java

@@ -84,6 +84,7 @@ import retrofit2.Response;
 import static app.insti.Constants.DATA_TYPE_BODY;
 import static app.insti.Constants.DATA_TYPE_EVENT;
 import static app.insti.Constants.DATA_TYPE_MAP;
+import static app.insti.Constants.DATA_TYPE_MESS;
 import static app.insti.Constants.DATA_TYPE_NEWS;
 import static app.insti.Constants.DATA_TYPE_PT;
 import static app.insti.Constants.DATA_TYPE_USER;
@@ -323,7 +324,7 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
      * Open the proper fragment from given type and id
      */
     private void chooseIntent(String type, String id) {
-        if (type == null || id == null) {
+        if (type == null || (!type.equals(DATA_TYPE_MESS) && id == null)) {
             return;
         }
         switch (type) {
@@ -342,6 +343,9 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
             case DATA_TYPE_MAP:
                 updateFragment(MapFragment.newInstance(id));
                 return;
+            case DATA_TYPE_MESS:
+                updateFragment(new MessMenuFragment());
+                return;
         }
         Log.e("NOTIFICATIONS", "Server sent invalid notification?");
     }
@@ -407,6 +411,8 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
                     return DATA_TYPE_USER;
                 case "map":
                     return DATA_TYPE_MAP;
+                case "mess":
+                    return DATA_TYPE_MESS;
             }
         } catch (MalformedURLException ignored) {}
         return null;
@@ -417,7 +423,7 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
         super.onStart();
         initNavigationView();
         if (session.isLoggedIn()) {
-            currentUser = User.fromString(session.pref.getString(Constants.CURRENT_USER, ""));
+            currentUser = session.getCurrentUser();
             updateNavigationView();
             updateFCMId();
         }
@@ -638,6 +644,9 @@ public class MainActivity extends AppCompatActivity implements NavigationView.On
      * Change the active fragment to the supplied one
      */
     public void updateFragment(Fragment fragment) {
+        if (session.isLoggedIn() && currentUser == null) {
+            currentUser = session.getCurrentUser();
+        }
         Bundle bundle = fragment.getArguments();
         if (bundle == null) {
             bundle = new Bundle();

app/src/main/java/app/insti/adapter/MessMenuAdapter.java

@@ -12,6 +12,7 @@ import androidx.recyclerview.widget.RecyclerView;
 import java.util.List;
 
 import app.insti.R;
+import app.insti.Utils;
 import app.insti.api.model.MessMenu;
 
 public class MessMenuAdapter extends RecyclerView.Adapter<MessMenuAdapter.ViewHolder> {
@@ -36,7 +37,7 @@ public class MessMenuAdapter extends RecyclerView.Adapter<MessMenuAdapter.ViewHo
     @Override
     public void onBindViewHolder(@NonNull MessMenuAdapter.ViewHolder holder, int position) {
         MessMenu messMenu = messMenus.get(position);
-        holder.day.setText(generateDayString(messMenu.getDay()));
+        holder.day.setText(Utils.generateDayString(messMenu.getDay()));
         holder.breakfast.setText(messMenu.getBreakfast());
         holder.lunch.setText(messMenu.getLunch());
         holder.snacks.setText(messMenu.getSnacks());
@@ -57,27 +58,6 @@ public class MessMenuAdapter extends RecyclerView.Adapter<MessMenuAdapter.ViewHo
         messMenus = menus;
     }
 
-    private String generateDayString(int day) {
-        switch (day) {
-            case 1:
-                return "Monday";
-            case 2:
-                return "Tuesday";
-            case 3:
-                return "Wednesday";
-            case 4:
-                return "Thursday";
-            case 5:
-                return "Friday";
-            case 6:
-                return "Saturday";
-            case 7:
-                return "Sunday";
-            default:
-                throw new IndexOutOfBoundsException("DayIndexOutOfBounds: " + day);
-        }
-    }
-
     public class ViewHolder extends RecyclerView.ViewHolder {
         private TextView day;
         private TextView breakfast;

app/src/main/java/app/insti/api/model/HostelMessMenu.java

@@ -4,7 +4,10 @@ import androidx.annotation.NonNull;
 
 import com.google.gson.annotations.SerializedName;
 
+import java.util.ArrayList;
+import java.util.Calendar;
 import java.util.List;
+import java.util.Locale;
 
 public class HostelMessMenu {
     @NonNull()
@@ -70,4 +73,29 @@ public class HostelMessMenu {
     public void setMessMenus(List<MessMenu> messMenus) {
         this.messMenus = messMenus;
     }
+
+    public List<MessMenu> getSortedMessMenus() {
+        List<MessMenu> messMenus = getMessMenus();
+
+        /* Sort by day starting today
+         * This could have been done in a much simpler way with Java 8 :(
+         * Don't try to fix this */
+        final List<MessMenu> sortedMenus = new ArrayList<>();
+        final Calendar calendar = Calendar.getInstance(Locale.UK);
+        int today = calendar.get(Calendar.DAY_OF_WEEK) - 2;
+        if (today == -1) {
+            today = 6;
+        }
+
+        /* Sort by day */
+        for (int i = 0; i < 7; i++) {
+            final int day = (today + i) % 7 + 1;
+            for (MessMenu menu : messMenus) {
+                if (menu.getDay() == day) {
+                    sortedMenus.add(menu);
+                }
+            }
+        }
+        return sortedMenus;
+    }
 }

app/src/main/java/app/insti/fragment/MessMenuFragment.java

@@ -16,9 +16,7 @@ import androidx.recyclerview.widget.RecyclerView;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
 import java.util.ArrayList;
-import java.util.Calendar;
 import java.util.List;
-import java.util.Locale;
 
 import app.insti.Constants;
 import app.insti.R;
@@ -147,27 +145,7 @@ public class MessMenuFragment extends BaseFragment {
         /* Skip if we're already destroyed */
         if (getActivity() == null || getView() == null) return;
 
-        List<MessMenu> messMenus = hostelMessMenu.getMessMenus();
-
-        /* Sort by day starting today
-         * This could have been done in a much simpler way with Java 8 :(
-         * Don't try to fix this */
-        final List<MessMenu> sortedMenus = new ArrayList<>();
-        final Calendar calendar = Calendar.getInstance(Locale.UK);
-        int today = calendar.get(Calendar.DAY_OF_WEEK) - 2;
-        if (today == -1) {
-            today = 6;
-        }
-
-        /* Sort by day */
-        for (int i = 0; i < 7; i++) {
-            final int day = (today + i) % 7 + 1;
-            for (MessMenu menu : messMenus) {
-                if (menu.getDay() == day) {
-                    sortedMenus.add(menu);
-                }
-            }
-        }
+        final List<MessMenu> sortedMenus = hostelMessMenu.getSortedMessMenus();
 
         /* Display */
         notifyChange(sortedMenus);

app/src/main/java/app/insti/widget/MessMenuWidget.java

+package app.insti.widget;
+
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.widget.RemoteViews;
+
+import java.util.Calendar;
+import java.util.List;
+
+import app.insti.R;
+import app.insti.SessionManager;
+import app.insti.Utils;
+import app.insti.activity.MainActivity;
+import app.insti.api.RetrofitInterface;
+import app.insti.api.ServiceGenerator;
+import app.insti.api.model.HostelMessMenu;
+import app.insti.api.model.MessMenu;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+/**
+ * Implementation of App Widget functionality.
+ */
+public class MessMenuWidget extends AppWidgetProvider {
+
+    // TODO Remove duplicate code from MessMenuFragment
+    private RemoteViews views;
+    private List<HostelMessMenu> instituteMessMenu;
+
+    void updateAppWidget(Context context, AppWidgetManager appWidgetManager,
+                         int appWidgetId) {
+
+        // Construct the RemoteViews object
+        views = new RemoteViews(context.getPackageName(), R.layout.mess_menu_widget);
+        SessionManager sessionManager = new SessionManager(context);
+        if (sessionManager.isLoggedIn()) {
+            ServiceGenerator serviceGenerator = new ServiceGenerator(context);
+            RetrofitInterface retrofitInterface = serviceGenerator.getRetrofitInterface();
+            retrofitInterface.getInstituteMessMenu(sessionManager.getSessionID()).enqueue(new Callback<List<HostelMessMenu>>() {
+                @Override
+                public void onResponse(Call<List<HostelMessMenu>> call, Response<List<HostelMessMenu>> response) {
+                    if (response.isSuccessful()) {
+                        instituteMessMenu = response.body();
+                        displayMenu(sessionManager.getCurrentUser().getHostel());
+
+                        // Instruct the widget manager to update the widget
+                        appWidgetManager.updateAppWidget(appWidgetId, views);
+                    }
+                }
+
+                @Override
+                public void onFailure(Call<List<HostelMessMenu>> call, Throwable t) {
+
+                }
+            });
+        } else {
+            views.setTextViewText(R.id.meal_text_view, "Login to see your mess menu");
+            appWidgetManager.updateAppWidget(appWidgetId, views);
+        }
+    }
+
+    private void displayMenu(String hostel) {
+        HostelMessMenu hostelMessMenu = findMessMenu(instituteMessMenu, hostel);
+        if (hostelMessMenu != null)
+            displayMessMenu(hostelMessMenu);
+    }
+
+    private void displayMessMenu(HostelMessMenu hostelMessMenu) {
+        MessMenu todaysMenu = hostelMessMenu.getSortedMessMenus().get(0);
+
+        views.setTextViewText(R.id.day_text_view, Utils.generateDayString(todaysMenu.getDay()));
+
+        Calendar calendar = Calendar.getInstance();
+        int hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);
+        int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
+
+        // TODO: Consider moving to a separate Meal class
+        String mealType;
+        String mealTime;
+        String menu;
+        if (hourOfDay < 10 || hourOfDay >= 22) {
+            // breakfast
+            mealType = "Breakfast";
+            menu = todaysMenu.getBreakfast();
+            if (dayOfWeek == Calendar.SATURDAY || dayOfWeek == Calendar.SUNDAY) {
+                mealTime = "8am to 10am";
+            } else {
+                mealTime = "7:30am to 9:30am";
+            }
+        } else if (hourOfDay < 14) {
+            // lunch
+            mealType = "Lunch";
+            menu = todaysMenu.getLunch();
+            mealTime = "12noon to 2pm";
+        } else if (hourOfDay < 18) {
+            // snacks
+            mealType = "Snacks";
+            menu = todaysMenu.getSnacks();
+            mealTime = "4:30pm to 6:15pm";
+        } else {
+            // dinner
+            mealType = "Dinner";
+            menu = todaysMenu.getDinner();
+            mealTime = "8pm to 10pm";
+        }
+
+        views.setTextViewText(R.id.meal_name_text_view, mealType);
+        views.setTextViewText(R.id.meal_time_text_view, mealTime);
+        views.setTextViewText(R.id.meal_text_view, menu);
+    }
+
+    private HostelMessMenu findMessMenu(List<HostelMessMenu> hostelMessMenus, String hostel) {
+        for (HostelMessMenu hostelMessMenu : hostelMessMenus) {
+            if (hostelMessMenu.getShortName().equals(hostel)) {
+                return hostelMessMenu;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        // There may be multiple widgets active, so update all of them
+        for (int appWidgetId : appWidgetIds) {
+            updateAppWidget(context, appWidgetManager, appWidgetId);
+        }
+
+        Intent intent = new Intent(context, MainActivity.class);
+        intent.setAction(Intent.ACTION_VIEW);
+        intent.setData(Uri.parse("https://insti.app/mess/"));
+        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
+
+        views.setOnClickPendingIntent(R.id.mess_menu_widget, pendingIntent);
+    }
+}
+

app/src/main/res/drawable/round_background.xml

+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#FFFFFF" />
+    <corners android:radius="4dp" />
+    <padding
+        android:bottom="0dp"
+        android:left="0dp"
+        android:right="0dp"
+        android:top="0dp" />
+</shape>
\ No newline at end of file

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

+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/mess_menu_widget"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@drawable/round_background"
+    android:orientation="vertical"
+    android:padding="@dimen/widget_margin">
+
+    <TextView
+        android:id="@+id/day_text_view"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textColor="@color/colorPrimary"
+        android:textSize="20sp"
+        android:textStyle="bold" />
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="8dp"
+        android:orientation="horizontal">
+
+        <TextView
+            android:id="@+id/meal_name_text_view"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:textColor="@color/colorGray"
+            android:textSize="16sp" />
+
+        <TextView
+            android:id="@+id/meal_time_text_view"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="end"
+            android:textColor="@color/colorGray"
+            android:textSize="16sp" />
+    </LinearLayout>
+
+    <TextView
+        android:id="@+id/meal_text_view"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textColor="#000000" />
+
+</LinearLayout>

app/src/main/res/values/dimens.xml

@@ -10,4 +10,7 @@
     <dimen name="expanded_card_height">280dp</dimen>
     <dimen name="place_name_text_size">20sp</dimen>
     <dimen name="place_sub_head_text_size">16sp</dimen>
+
+    <!-- Widget -->
+    <dimen name="widget_margin">16dp</dimen>
 </resources>

app/src/main/res/xml/mess_menu_widget_info.xml

+<?xml version="1.0" encoding="utf-8"?>
+<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    android:initialKeyguardLayout="@layout/mess_menu_widget"
+    android:initialLayout="@layout/mess_menu_widget"
+    android:minWidth="250dp"
+    android:minHeight="110dp"
+    android:previewImage="@mipmap/ic_launcher_foreground"
+    android:resizeMode="horizontal|vertical"
+    android:updatePeriodMillis="86400000"
+    android:widgetCategory="home_screen|keyguard" />
\ No newline at end of file