/*
This file is part of Privacy friendly food tracker.
Privacy friendly food tracker is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Privacy friendly food tracker is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Privacy friendly food tracker. If not, see <https://www.gnu.org/licenses/>.
*/
package org.secuso.privacyfriendlyfoodtracker.ui;
import android.arch.lifecycle.ViewModelProviders;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.design.widget.TextInputLayout;
import android.support.v4.app.Fragment;
import android.text.InputFilter;
import android.text.InputType;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.TextView;
import org.secuso.privacyfriendlyfoodtracker.R;
import org.secuso.privacyfriendlyfoodtracker.ui.adapter.DatabaseFacade;
import org.secuso.privacyfriendlyfoodtracker.ui.viewmodels.SharedStatisticViewModel;
import java.util.Locale;
/**
* A simple {@link Fragment} subclass. Contains a possibility to add a new entry.
*
* @author Simon Reinkemeier
*/
public class AddFoodFragment extends Fragment {
SharedStatisticViewModel sharedStatisticViewModel;
BaseAddFoodActivity referenceActivity;
View parentHolder;
TextView textView;
DatabaseFacade databaseFacade;
EditText amountField;
EditText caloriesField;
/**
* The required empty public constructor
*/
public AddFoodFragment() {
// Required empty public constructor
}
/**
* Called when the view is created
* @param inflater the inflater
* @param container the container
* @param savedInstanceState the saved instance state
* @return the view that is shown in the fragment
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
referenceActivity = (BaseAddFoodActivity) getActivity();
parentHolder = inflater.inflate(R.layout.content_food, container, false);
sharedStatisticViewModel = ViewModelProviders.of(getActivity()).get(SharedStatisticViewModel.class);
try {
databaseFacade = new DatabaseFacade(referenceActivity.getApplicationContext());
} catch (Exception e){
Log.e("Error", e.getMessage());
}
InputFilter[] amountFilter = { new InputFilter.LengthFilter(6) };
InputFilter[] caloriesFilter = { new InputFilter.LengthFilter(10) };
amountField = parentHolder.findViewById(R.id.input_amount);
caloriesField = parentHolder.findViewById(R.id.input_calories);
amountField.setFilters(amountFilter);
amountField.setInputType(InputType.TYPE_CLASS_NUMBER);
caloriesField.setFilters(caloriesFilter);
FloatingActionButton fab = parentHolder.findViewById(R.id.addEntry);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
EditText nameField = parentHolder.findViewById(R.id.input_food);
String name = nameField.getText().toString();
String amount = amountField.getText().toString();
String calories = caloriesField.getText().toString();
// validation
boolean validated = validateResponses(name, amount, calories, view);
if(validated) {
boolean entrySuccessful = makeDatabaseEntry(name, amount, calories);
if (!entrySuccessful){
showErrorMessage(view, R.string.error_database);
} else {
referenceActivity.finish();
}
}
}
});
return parentHolder;
}
/**
* Called when the fragment is made visible to set correct presets for
* amount and food input
* @param isVisible indicates the visibility of the fragment
*/
@Override
public void setUserVisibleHint(boolean isVisible) {
super.setUserVisibleHint(isVisible);
if(isVisible && referenceActivity.productSet) {
EditText nameField = parentHolder.findViewById(R.id.input_food);
EditText caloriesField = parentHolder.findViewById(R.id.input_calories);
nameField.setText(referenceActivity.name);
nameField.setFocusable(false);
nameField.setClickable(false);
nameField.setTextColor(getResources().getColor(R.color.middlegrey));
caloriesField.setText(String.format(Locale.ENGLISH, "%.2f", referenceActivity.calories));
caloriesField.setFocusable(false);
caloriesField.setClickable(false);
caloriesField.setTextColor(getResources().getColor(R.color.middlegrey));
} else if (isVisible && !referenceActivity.productSet) {
EditText nameField = parentHolder.findViewById(R.id.input_food);
EditText caloriesField = parentHolder.findViewById(R.id.input_calories);
nameField.setText("");
nameField.setFocusable(true);
nameField.setFocusableInTouchMode(true);
nameField.setClickable(true);
nameField.setTextColor(getResources().getColor(R.color.black));
caloriesField.setText("");
caloriesField.setFocusable(true);
caloriesField.setFocusableInTouchMode(true);
caloriesField.setClickable(true);
caloriesField.setTextColor(getResources().getColor(R.color.black));
}
}
/**
* Create a new db entry
* @param name Name of the food
* @param amountString amount in g
* @param caloriesString calories per 100g
* @return true if successful
*/
private boolean makeDatabaseEntry(String name, String amountString, String caloriesString) {
try {
int amount = Integer.parseInt(amountString);
float calories = Float.parseFloat(caloriesString);
// We haven't explicitly chosen a product so the productId is 0 for unknown
databaseFacade.insertEntry(amount, ((BaseAddFoodActivity) referenceActivity).date, name, calories, 0);
} catch (Exception e) {
// something went wrong so the entry wasn't successful
e.printStackTrace();
return false;
}
return true;
}
/**
* Validates the inputs that a user has given
* @param name name of the product
* @param amount amount in g
* @param calories calories per 100g
* @param view the view
* @return returns true is all entries are valid
*/
private boolean validateResponses(String name, String amount, String calories, View view) {
if("".equals(name)){
showErrorMessage(referenceActivity.findViewById(R.id.inputFoodName), R.string.error_food_missing);
return false;
} else if ("".equals(amount)) {
showErrorMessage(referenceActivity.findViewById(R.id.inputFoodAmount), R.string.error_amount_missing);
return false;
} else if ("".equals(calories)) {
showErrorMessage(referenceActivity.findViewById(R.id.inputCalories), R.string.error_calories_missing);
return false;
}
try {
Integer.parseInt(amount);
} catch (NumberFormatException e) {
showErrorMessage(referenceActivity.findViewById(R.id.inputFoodAmount), R.string.error_amount_nan);
return false;
}
try {
Float.parseFloat(calories);
} catch (NumberFormatException e) {
showErrorMessage(referenceActivity.findViewById(R.id.inputCalories), R.string.error_calories_nan);
return false;
}
return true;
}
private void showErrorMessage(View view, int errorMessageId){
// reset error messages
((TextInputLayout)referenceActivity.findViewById(R.id.inputFoodName)).setError("");
((TextInputLayout)referenceActivity.findViewById(R.id.inputCalories)).setError("");
((TextInputLayout)referenceActivity.findViewById(R.id.inputFoodAmount)).setError("");
// if the view that this is called on is a TextInputlayout, we can show the error on the TextinputLayout
if(view instanceof TextInputLayout){
TextInputLayout til = (TextInputLayout) view;
til.setError(getString(errorMessageId));
} else {
//otherwise show a generic error message
Snackbar.make(view, errorMessageId, Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
}
}
