food

package uk.ac.tees.cupcake.food;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

/**
 * Created by /**
 * {@author Bradley Hunter < s6263464@live.tees.ac.uk}
 * {@author Sam Hammersley < q5315908@live.tees.ac.uk}
 */

public final class Food {

    private final String label;

    private final String category;

    private final Map<String, Double> nutritionalValues;

    public Food(String label, Map<String, Double> nutritionalValues, String category){
        this.label = label;
        this.category = category;
        this.nutritionalValues = nutritionalValues;
    }

    @Override
    public String toString() {
        return label + "" + nutritionalValues;
    }

    public String getLabel() {
        return label;
    }

    public String getCategory() { return category; }

    public Map<String, Double> getNutritionalValues() { return nutritionalValues; }

    public static List<Food> fromJSONArray(JSONArray array){
        List<Food> foods = new LinkedList<>();

        try{
            for (int index = 0; index < array.length(); index++){

                JSONObject foodObject = array.getJSONObject(index).getJSONObject("food");

                String label = foodObject.getString("label");
                JSONObject nutrients = foodObject.getJSONObject("nutrients");
                String category = foodObject.getString("category");

                Map<String,Double> nutritionalValues = new HashMap<>();

                Iterator<String> it = nutrients.keys();
                while(it.hasNext()){
                    String key = it.next();
                    double value = nutrients.getDouble(key);
                    nutritionalValues.put(key,value);
                }

                foods.add(new Food(label,nutritionalValues, category));
            }

            return foods;
        }catch(JSONException e){
            throw new RuntimeException("Failed to parse food response ", e);
        }
    }

    public static List<Food> fromJSONObject(String jsonString){
        try {
            JSONObject object = new JSONObject(jsonString);

            List<Food> food = fromJSONArray(object.getJSONArray("parsed"));
            food.addAll(fromJSONArray(object.getJSONArray("hints")));

            return food;
        } catch(JSONException e) {
            throw new RuntimeException("Failed to parse food response", e);
        }
    }

    private static final Map<String, String> NUTRITIONAL_LABELS = new HashMap<>();

    static {
        NUTRITIONAL_LABELS.put("procnt", "protein");
        NUTRITIONAL_LABELS.put("fat", "fat");
        NUTRITIONAL_LABELS.put("fibtg", "fibre");
        NUTRITIONAL_LABELS.put("enerc_kcal", "calories");
        NUTRITIONAL_LABELS.put("chocdf", "carbohydrates");
    }

    public static String getReadableLabel(String tag) {
        return NUTRITIONAL_LABELS.get(tag.toLowerCase());
    }

}


food adapter


package uk.ac.tees.cupcake.food;

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 java.util.Map;

import uk.ac.tees.cupcake.R;

/**
 * Created by /**
 * {@author Bradley Hunter < s6263464@live.tees.ac.uk}
 * {@author Sam Hammersley < q5315908@live.tees.ac.uk}
 */

public class FoodAdapter extends RecyclerView.Adapter<FoodAdapter.ViewHolder> {

    private final List<Food> foods;

    public FoodAdapter(List<Food> foods){
        this.foods = foods;
    }

    @Override
    public FoodAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.activity_search_food_row, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(FoodAdapter.ViewHolder holder, int position) {
        Food food = foods.get(position);
        holder.mFoodLabel.setText(food.getLabel());
        holder.mFoodCategory.setText(food.getCategory());

        setNutritionalValuesText(food.getNutritionalValues(), holder.mFoodNutritionLeft, holder.mFoodNutritionRight);
    }

    private void setNutritionalValuesText(Map<String, Double> nutritionalValues, TextView column1, TextView column2) {
        StringBuilder columnText1 = new StringBuilder();
        StringBuilder columnText2 = new StringBuilder();

        int index = 0;
        for (Map.Entry<String, Double> entry : nutritionalValues.entrySet()) {
            String readableLabel = Food.getReadableLabel(entry.getKey());
            (index++ % 2 == 0 ? columnText1 : columnText2)
                    .append("\n")
                    .append(readableLabel)
                    .append(":  ")
                    .append(String.format("%.2f", entry.getValue()));
        }

        column1.setText(columnText1);
        column2.setText(columnText2);
    }

    @Override
    public int getItemCount() {
        return foods.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder{

        private TextView mFoodLabel;
        private TextView mFoodCategory;
        private TextView mFoodNutritionLeft;
        private TextView mFoodNutritionRight;

        public ViewHolder(View itemView) {
            super(itemView);
            mFoodLabel = itemView.findViewById(R.id.search_food_row_label_value_text_view);
            mFoodCategory = itemView.findViewById(R.id.search_food_row_category_value_text_view);
            mFoodNutritionLeft = itemView.findViewById(R.id.seach_food_row_nutrition_label_left_text_view);
            mFoodNutritionRight = itemView.findViewById(R.id.seach_food_row_nutrition_label_right_text_view);
        }
    }
}