API connection for diets and ingredients addition

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/diets/DietsActivity.java

@@ -1,12 +1,16 @@
 package gr.auth.databases.flavours.activities.diets;
 
 import android.content.Intent;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.view.MenuItem;
 import android.view.View;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
+import org.json.JSONArray;
+import org.json.JSONObject;
+
 import java.util.ArrayList;
 
 import androidx.appcompat.app.ActionBar;
@@ -17,8 +21,16 @@ import gr.auth.databases.flavours.R;
 import gr.auth.databases.flavours.activities.AddDietActivity;
 import gr.auth.databases.flavours.base.BaseActivity;
 import gr.auth.databases.flavours.model.Diet;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+import okhttp3.ResponseBody;
+
+import static gr.auth.databases.flavours.session.SessionManager.dietsUserViewUrl;
+import static gr.auth.databases.flavours.session.SessionManager.followDietUrl;
 
-public class DietsActivity extends BaseActivity {
+public class DietsActivity extends BaseActivity implements DietsAdapter.SubscribeDietsAdapterInteractionListener {
+    private RecyclerView recyclerView;
     private FloatingActionButton FAB;
     private ArrayList<Diet> diets = new ArrayList<>();
 
@@ -47,16 +59,13 @@ public class DietsActivity extends BaseActivity {
             }
         });
 
-        RecyclerView recyclerView = findViewById(R.id.diets_list);
+        recyclerView = findViewById(R.id.diets_list);
         recyclerView.setHasFixedSize(true);
         LinearLayoutManager layoutManager = new LinearLayoutManager(this);
         recyclerView.setLayoutManager(layoutManager);
 
-        diets.add(new Diet(1, "Μόνο κρέας", "Τρώς πολύ κρέας.", false));
-        diets.add(new Diet(2, "Σχεδόν μόνο κρέας", "Τρώς αρκετό κρέας.", true));
-
-        DietsAdapter dietsAdapter = new DietsAdapter(diets);
-        recyclerView.setAdapter(dietsAdapter);
+        DietsTask dietsTask = new DietsTask();
+        dietsTask.execute();
     }
 
     @Override
@@ -79,4 +88,99 @@ public class DietsActivity extends BaseActivity {
 
         return super.onOptionsItemSelected(item);
     }
+
+    @Override
+    public void onSubscribeDietsAdapterInteraction(Diet diet) {
+        FollowDietStateTask followDietStateTask = new FollowDietStateTask();
+        followDietStateTask.execute(diet.getId());
+    }
+
+    private class DietsTask extends AsyncTask<Void, Void, Integer> {
+        private static final String JSON_TAG_DIETS_LIST = "diets";
+        private static final String JSON_TAG_DIET_ID = "diet_id";
+        private static final String JSON_TAG_DIET_NAME = "diet_name";
+        private static final String JSON_TAG_DIET_DESCRIPTION = "diet_description";
+        //private static final String JSON_TAG_DIET_IS_APPROVED = "food_calories";
+
+        private static final String JSON_TAG_USER_FOLLOWS_DIET_LIST = "followed";
+        private static final String JSON_TAG_USER_FOLLOWS_DIET_DIET = "diet";
+
+        @Override
+        protected void onPreExecute() {
+        }
+
+        @Override
+        protected Integer doInBackground(Void... params) {
+            //Builds the request
+            Request request = new Request.Builder()
+                    .url(dietsUserViewUrl)
+                    .build();
+
+            try {
+                //Makes request & handles response
+                Response response = client.newCall(request).execute();
+
+                ResponseBody responseBody = response.body();
+                assert responseBody != null;
+                String result = responseBody.string();
+                JSONObject jsonResponse = new JSONObject(result);
+
+                ArrayList<Integer> userDiets = new ArrayList<>();
+                JSONArray jsonUserDiets = jsonResponse.getJSONArray(JSON_TAG_USER_FOLLOWS_DIET_LIST);
+                for (int dietIndex = 0; dietIndex < jsonUserDiets.length(); ++dietIndex) {
+                    JSONObject diet = jsonUserDiets.getJSONObject(dietIndex);
+                    userDiets.add(diet.getInt(JSON_TAG_USER_FOLLOWS_DIET_DIET));
+                }
+
+                JSONArray jsonDietsList = jsonResponse.getJSONArray(JSON_TAG_DIETS_LIST);
+                for (int dietIndex = 0; dietIndex < jsonDietsList.length(); ++dietIndex) {
+                    JSONObject diet = jsonDietsList.getJSONObject(dietIndex);
+                    diets.add(new Diet(diet.getInt(JSON_TAG_DIET_ID),
+                            diet.getString(JSON_TAG_DIET_NAME),
+                            diet.getString(JSON_TAG_DIET_DESCRIPTION),
+                            userDiets.contains(diet.getInt(JSON_TAG_DIET_ID))));
+                }
+                return 1;
+            } catch (Exception e) {
+                e.printStackTrace();
+                return 2;
+            }
+        }
+
+        @Override
+        protected void onPostExecute(Integer result) {
+            DietsAdapter dietsAdapter = new DietsAdapter(diets, DietsActivity.this);
+            recyclerView.setAdapter(dietsAdapter);
+        }
+    }
+
+    private class FollowDietStateTask extends AsyncTask<Integer, Void, Integer> {
+        @Override
+        protected void onPreExecute() {
+        }
+
+        @Override
+        protected Integer doInBackground(Integer... params) {
+            RequestBody requestBody = RequestBody.create(null, new byte[]{});
+
+            //Builds the request
+            Request request = new Request.Builder()
+                    .patch(requestBody)
+                    .url(followDietUrl + params[0] + "/")
+                    .build();
+
+            try {
+                //Makes request & handles response
+                client.newCall(request).execute();
+                return 0;
+            } catch (Exception e) {
+                e.printStackTrace();
+                return 2;
+            }
+        }
+
+        @Override
+        protected void onPostExecute(Integer result) {
+        }
+    }
 }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/diets/DietsAdapter.java

@@ -15,9 +15,11 @@ import gr.auth.databases.flavours.model.Diet;
 
 public class DietsAdapter extends RecyclerView.Adapter<DietsAdapter.DietViewHolder> {
     private ArrayList<Diet> diets;
+    private SubscribeDietsAdapterInteractionListener subscribeDietsAdapterInteractionListener;
 
-    DietsAdapter(ArrayList<Diet> diets) {
+    DietsAdapter(ArrayList<Diet> diets, SubscribeDietsAdapterInteractionListener subscribeDietsAdapterInteractionListener) {
         this.diets = diets;
+        this.subscribeDietsAdapterInteractionListener = subscribeDietsAdapterInteractionListener;
     }
 
     @NonNull
@@ -29,12 +31,31 @@ public class DietsAdapter extends RecyclerView.Adapter<DietsAdapter.DietViewHold
     }
 
     @Override
-    public void onBindViewHolder(@NonNull DietViewHolder holder, int position) {
+    public void onBindViewHolder(@NonNull final DietViewHolder holder, final int position) {
         holder.name.setText(diets.get(position).getName());
         holder.description.setText(diets.get(position).getDescription());
+
         if (diets.get(position).isFollowedByUser()) {
             holder.addDietButton.setImageResource(R.drawable.ic_delete_black_18dp);
+        } else {
+            holder.addDietButton.setImageResource(R.drawable.ic_add_black_18dp);
         }
+
+        holder.addDietButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                subscribeDietsAdapterInteractionListener.onSubscribeDietsAdapterInteraction(
+                        diets.get(holder.getAdapterPosition()));
+
+                if ((diets.get(position).isFollowedByUser())) {
+                    holder.addDietButton.setImageResource(R.drawable.ic_add_black_18dp);
+                    diets.get(position).setFollowedByUser(!diets.get(position).isFollowedByUser());
+                } else {
+                    holder.addDietButton.setImageResource(R.drawable.ic_delete_black_18dp);
+                    diets.get(position).setFollowedByUser(!diets.get(position).isFollowedByUser());
+                }
+            }
+        });
     }
 
     @Override
@@ -53,4 +74,8 @@ public class DietsAdapter extends RecyclerView.Adapter<DietsAdapter.DietViewHold
             addDietButton = v.findViewById(R.id.diets_diet_subscribe);
         }
     }
+
+    public interface SubscribeDietsAdapterInteractionListener {
+        void onSubscribeDietsAdapterInteraction(Diet diet);
+    }
 }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/ingredients/IngredientsActivity.java

@@ -2,6 +2,7 @@ package gr.auth.databases.flavours.activities.ingredients;
 
 import android.app.Activity;
 import android.content.Intent;
+import android.os.AsyncTask;
 import android.os.Bundle;
 import android.view.MenuItem;
 import android.view.View;
@@ -9,6 +10,9 @@ import android.widget.Toast;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
+import org.json.JSONArray;
+import org.json.JSONObject;
+
 import java.util.ArrayList;
 
 import androidx.appcompat.app.ActionBar;
@@ -19,13 +23,23 @@ import gr.auth.databases.flavours.R;
 import gr.auth.databases.flavours.activities.AddIngredientActivity;
 import gr.auth.databases.flavours.base.BaseActivity;
 import gr.auth.databases.flavours.model.Ingredient;
+import okhttp3.Request;
+import okhttp3.RequestBody;
+import okhttp3.Response;
+import okhttp3.ResponseBody;
 
 import static gr.auth.databases.flavours.activities.AddIngredientActivity.INGREDIENT_ADD_RESULT;
+import static gr.auth.databases.flavours.session.SessionManager.ingredientsUserViewUrl;
+import static gr.auth.databases.flavours.session.SessionManager.prohibitIngredientUrl;
 
-public class IngredientsActivity extends BaseActivity implements IngredientsAdapter.IngredientsAdapterInteractionListener {
+public class IngredientsActivity extends BaseActivity
+        implements IngredientsAdapter.SubscribeIngredientsAdapterInteractionListener,
+        IngredientsAdapter.IngredientsAdapterInteractionListener {
     public static final String INGREDIENT_PICK_RESULT = "INGREDIENT_PICK_RESULT";
     private static final int ADD_NEW_INGREDIENT_REQUEST = 2000;
 
+    private RecyclerView recyclerView;
+    private ArrayList<String> userProhibitsIngredients;
     private boolean isCalledForResult;
     private FloatingActionButton FAB;
     private ArrayList<Ingredient> ingredients = new ArrayList<>();
@@ -57,21 +71,13 @@ public class IngredientsActivity extends BaseActivity implements IngredientsAdap
             }
         });
 
-        RecyclerView recyclerView = findViewById(R.id.ingredients_list);
+        recyclerView = findViewById(R.id.ingredients_list);
         recyclerView.setHasFixedSize(true);
         LinearLayoutManager layoutManager = new LinearLayoutManager(this);
         recyclerView.setLayoutManager(layoutManager);
 
-        ingredients.add(new Ingredient("Μόνο κρέας", false));
-        ingredients.add(new Ingredient("Σχεδόν μόνο κρέας", true));
-
-        if (isCalledForResult) {
-            ingredientsAdapter = new IngredientsAdapter(this, ingredients, this);
-        } else {
-            ingredientsAdapter = new IngredientsAdapter(this, ingredients, null);
-        }
-
-        recyclerView.setAdapter(ingredientsAdapter);
+        IngredientsTask ingredientsTask = new IngredientsTask();
+        ingredientsTask.execute();
     }
 
     @Override
@@ -106,6 +112,12 @@ public class IngredientsActivity extends BaseActivity implements IngredientsAdap
         super.onDestroy();
     }
 
+    @Override
+    public void onSubscribeIngredientsAdapterInteraction(Ingredient ingredient) {
+        ProhibitIngredientStateTask prohibitIngredientStateTask = new ProhibitIngredientStateTask();
+        prohibitIngredientStateTask.execute(ingredient.getName());
+    }
+
     @Override
     public void onIngredientsAdapterInteraction(Ingredient ingredient) {
         Intent returnIntent = new Intent();
@@ -125,5 +137,101 @@ public class IngredientsActivity extends BaseActivity implements IngredientsAdap
             }
         }
     }
-}
 
+    private class IngredientsTask extends AsyncTask<Void, Void, Integer> {
+        private static final String JSON_TAG_INGREDIENTS_LIST = "ingredients";
+        private static final String JSON_TAG_INGREDIENT_NAME = "ingredient_name";
+        private static final String JSON_TAG_INGREDIENT_HAS_ALCOHOL = "ingredient_has_alcohol";
+
+        private static final String JSON_TAG_USER_PROHIBITS_INGREDIENT_LIST = "prohibits";
+        private static final String JSON_TAG_USER_PROHIBITS_INGREDIENT = "ingredient_name";
+
+        @Override
+        protected void onPreExecute() {
+        }
+
+        @Override
+        protected Integer doInBackground(Void... params) {
+            //Builds the request
+            Request request = new Request.Builder()
+                    .url(ingredientsUserViewUrl)
+                    .build();
+
+            try {
+                //Makes request & handles response
+                Response response = client.newCall(request).execute();
+
+                ResponseBody responseBody = response.body();
+                assert responseBody != null;
+                String result = responseBody.string();
+                JSONObject jsonResponse = new JSONObject(result);
+
+                userProhibitsIngredients = new ArrayList<>();
+                JSONArray jsonUserProhibitsIngredients = jsonResponse.getJSONArray(JSON_TAG_USER_PROHIBITS_INGREDIENT_LIST);
+                for (int ingredientIndex = 0; ingredientIndex < jsonUserProhibitsIngredients.length(); ++ingredientIndex) {
+                    JSONObject ingredient = jsonUserProhibitsIngredients.getJSONObject(ingredientIndex);
+                    userProhibitsIngredients.add(ingredient.getString(JSON_TAG_USER_PROHIBITS_INGREDIENT));
+                }
+
+                JSONArray jsonIngredientsList = jsonResponse.getJSONArray(JSON_TAG_INGREDIENTS_LIST);
+                for (int dietIndex = 0; dietIndex < jsonIngredientsList.length(); ++dietIndex) {
+                    JSONObject ingredient = jsonIngredientsList.getJSONObject(dietIndex);
+                    ingredients.add(new Ingredient(ingredient.getString(JSON_TAG_INGREDIENT_NAME),
+                            ingredient.getBoolean(JSON_TAG_INGREDIENT_HAS_ALCOHOL)));
+                }
+                return 1;
+            } catch (Exception e) {
+                e.printStackTrace();
+                return 2;
+            }
+        }
+
+        @Override
+        protected void onPostExecute(Integer result) {
+            if (isCalledForResult) {
+                ingredientsAdapter = new IngredientsAdapter(IngredientsActivity.this,
+                        ingredients,
+                        userProhibitsIngredients,
+                        null,
+                        IngredientsActivity.this);
+            } else {
+                ingredientsAdapter = new IngredientsAdapter(IngredientsActivity.this,
+                        ingredients,
+                        userProhibitsIngredients,
+                        IngredientsActivity.this,
+                        null);
+            }
+            recyclerView.setAdapter(ingredientsAdapter);
+        }
+    }
+
+    private class ProhibitIngredientStateTask extends AsyncTask<String, Void, Integer> {
+        @Override
+        protected void onPreExecute() {
+        }
+
+        @Override
+        protected Integer doInBackground(String... params) {
+            RequestBody requestBody = RequestBody.create(null, new byte[]{});
+
+            //Builds the request
+            Request request = new Request.Builder()
+                    .patch(requestBody)
+                    .url(prohibitIngredientUrl + params[0] + "/")
+                    .build();
+
+            try {
+                //Makes request & handles response
+                client.newCall(request).execute();
+                return 0;
+            } catch (Exception e) {
+                e.printStackTrace();
+                return 2;
+            }
+        }
+
+        @Override
+        protected void onPostExecute(Integer result) {
+        }
+    }
+}

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/ingredients/IngredientsAdapter.java

@@ -9,6 +9,7 @@ import android.widget.TextView;
 import java.util.ArrayList;
 
 import androidx.annotation.NonNull;
+import androidx.appcompat.widget.AppCompatImageButton;
 import androidx.cardview.widget.CardView;
 import androidx.recyclerview.widget.RecyclerView;
 import gr.auth.databases.flavours.R;
@@ -17,12 +18,17 @@ import gr.auth.databases.flavours.model.Ingredient;
 public class IngredientsAdapter extends RecyclerView.Adapter<IngredientsAdapter.IngredientViewHolder> {
     private Context context;
     private ArrayList<Ingredient> ingredients;
+    private ArrayList<String> userProhibitsIngredients;
+    private SubscribeIngredientsAdapterInteractionListener subscribeIngredientsAdapterInteractionListener;
     private IngredientsAdapterInteractionListener ingredientsAdapterInteractionListener;
 
-    IngredientsAdapter(Context context, ArrayList<Ingredient> ingredients,
+    IngredientsAdapter(Context context, ArrayList<Ingredient> ingredients, ArrayList<String> userProhibitsIngredients,
+                       SubscribeIngredientsAdapterInteractionListener subscribeIngredientsAdapterInteractionListener,
                        IngredientsAdapterInteractionListener ingredientsAdapterInteractionListener) {
         this.context = context;
         this.ingredients = ingredients;
+        this.userProhibitsIngredients = userProhibitsIngredients;
+        this.subscribeIngredientsAdapterInteractionListener = subscribeIngredientsAdapterInteractionListener;
         this.ingredientsAdapterInteractionListener = ingredientsAdapterInteractionListener;
     }
 
@@ -35,11 +41,39 @@ public class IngredientsAdapter extends RecyclerView.Adapter<IngredientsAdapter.
     }
 
     @Override
-    public void onBindViewHolder(@NonNull final IngredientViewHolder holder, int position) {
+    public void onBindViewHolder(@NonNull final IngredientViewHolder holder, final int position) {
         holder.name.setText(ingredients.get(position).getName());
         holder.containsAlcohol.setText(context.getString(R.string.ingredients_contains_alcohol_placeholder,
                 ingredients.get(position).hasAlcohol() ? "YES" : "NO"));
 
+        if (subscribeIngredientsAdapterInteractionListener != null) {
+            holder.subscribeButton.setVisibility(View.VISIBLE);
+
+            if (userProhibitsIngredients.contains(ingredients.get(position).getName())) {
+                holder.subscribeButton.setImageResource(R.drawable.ic_delete_black_18dp);
+            } else {
+                holder.subscribeButton.setImageResource(R.drawable.ic_add_black_18dp);
+            }
+
+            holder.subscribeButton.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    subscribeIngredientsAdapterInteractionListener.onSubscribeIngredientsAdapterInteraction(
+                            ingredients.get(holder.getAdapterPosition()));
+
+                    if (userProhibitsIngredients.contains(ingredients.get(position).getName())) {
+                        holder.subscribeButton.setImageResource(R.drawable.ic_add_black_18dp);
+                        userProhibitsIngredients.remove(ingredients.get(position).getName());
+                    } else {
+                        holder.subscribeButton.setImageResource(R.drawable.ic_delete_black_18dp);
+                        userProhibitsIngredients.add(ingredients.get(position).getName());
+                    }
+                }
+            });
+        } else {
+            holder.subscribeButton.setVisibility(View.GONE);
+        }
+
         if (ingredientsAdapterInteractionListener != null) {
             holder.card.setOnClickListener(new View.OnClickListener() {
                 @Override
@@ -59,15 +93,21 @@ public class IngredientsAdapter extends RecyclerView.Adapter<IngredientsAdapter.
     static class IngredientViewHolder extends RecyclerView.ViewHolder {
         CardView card;
         TextView name, containsAlcohol;
+        AppCompatImageButton subscribeButton;
 
         IngredientViewHolder(View v) {
             super(v);
             card = v.findViewById(R.id.ingredients_row_card);
             name = v.findViewById(R.id.ingredients_ingredient_name);
             containsAlcohol = v.findViewById(R.id.ingredients_ingredient_contains_alcohol);
+            subscribeButton = v.findViewById(R.id.ingredients_ingredient_subscribe);
         }
     }
 
+    public interface SubscribeIngredientsAdapterInteractionListener {
+        void onSubscribeIngredientsAdapterInteraction(Ingredient ingredient);
+    }
+
     public interface IngredientsAdapterInteractionListener {
         void onIngredientsAdapterInteraction(Ingredient ingredient);
     }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/model/Diet.java

@@ -27,4 +27,8 @@ public class Diet {
     public boolean isFollowedByUser() {
         return isFollowedByUser;
     }
+
+    public void setFollowedByUser(boolean followedByUser) {
+        isFollowedByUser = followedByUser;
+    }
 }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/session/SessionManager.java

@@ -62,7 +62,10 @@ public class SessionManager {
     public static final String profileUserViewUrl = baseServerUrl + "api/profileUserView/";
     public static final String addFoodUrl = baseServerUrl + "api/addFood/";
     public static final String addDrinkUrl = baseServerUrl + "api/addDrink/";
-
+    public static final String dietsUserViewUrl = baseServerUrl + "api/dietUserView/";
+    public static final String ingredientsUserViewUrl = baseServerUrl + "api/ingredientUserView/";
+    public static final String prohibitIngredientUrl = baseServerUrl + "api/prohibitIngredient/";
+    public static final String followDietUrl = baseServerUrl + "api/followDiet/";
 
     // Client & Cookies
     private final OkHttpClient client;

UI/AndroidApp/flavoursWithoutBorders/app/src/main/res/layout/ingredients_row.xml

@@ -38,5 +38,12 @@
             android:layout_gravity="center_vertical"
             android:ellipsize="end"
             android:text="@string/ingredients_contains_alcohol" />
+
+        <androidx.appcompat.widget.AppCompatImageButton
+            android:id="@+id/ingredients_ingredient_subscribe"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="end"
+            android:src="@drawable/ic_add_black_18dp" />
     </LinearLayout>
 </androidx.cardview.widget.CardView>