app/src/main/java/com/davidmiguel/gobees/addeditapiary/AddEditApiaryPresenter.java
/*
* GoBees
* Copyright (c) 2016 - 2017 David Miguel Lozano
*
* This program 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
* any later version.
*
* This program 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 this program. If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
*/
package com.davidmiguel.gobees.addeditapiary;
import android.location.Location;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import com.davidmiguel.gobees.data.model.Apiary;
import com.davidmiguel.gobees.data.source.GoBeesDataSource;
import com.davidmiguel.gobees.data.source.GoBeesDataSource.GetApiaryCallback;
import com.davidmiguel.gobees.data.source.GoBeesDataSource.TaskCallback;
import com.davidmiguel.gobees.data.source.repository.GoBeesRepository;
import com.davidmiguel.gobees.utils.LocationUtils;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.location.LocationListener;
import com.google.common.base.Strings;
/**
* Listens to user actions from the UI AddEditApiaryFragment, retrieves the data and updates the
* UI as required.
*/
class AddEditApiaryPresenter implements AddEditApiaryContract.Presenter,
GetApiaryCallback, TaskCallback, ConnectionCallbacks, OnConnectionFailedListener,
LocationListener {
private GoBeesRepository goBeesRepository;
private AddEditApiaryContract.View view;
private LocationService locationService;
private long apiaryId;
private Apiary apiary;
AddEditApiaryPresenter(GoBeesRepository goBeesRepository,
AddEditApiaryContract.View view,
long apiaryId, LocationService locationService) {
this.goBeesRepository = goBeesRepository;
this.view = view;
this.apiaryId = apiaryId;
if (isNewApiary()) {
apiary = new Apiary();
}
view.setPresenter(this);
this.locationService = locationService;
this.locationService.setListeners(this, this);
}
@Override
public void save(String name, String latitude, String longitude, String notes) {
Double lat = null;
Double lon = null;
// Check name not empty
if (Strings.isNullOrEmpty(name)) {
view.showEmptyApiaryError();
return;
}
// Check location if it exists
else if (hasLocation(latitude, longitude)) {
lat = Double.parseDouble(latitude.replace(',', '.'));
lon = Double.parseDouble(longitude.replace(',', '.'));
if (!LocationUtils.isValidLocation(lat, lon)) {
view.showInvalidLocationError();
return;
}
}
// Create or update
if (isNewApiary()) {
createApiary(name, lat, lon, notes);
} else {
updateApiary(name, lat, lon, notes);
}
}
@Override
public void populateApiary() {
if (!isNewApiary()) {
goBeesRepository.getApiary(apiaryId, this);
}
}
@Override
public void toogleLocation() {
if (view.checkLocationPermission()) {
if (!locationService.isConnected()) {
// Connect GPS service
locationService.connect();
view.setLocationIcon(true);
view.showSearchingGpsMsg();
} else {
// Disconnect GPS service
stopLocation();
}
}
}
@Override
public void stopLocation() {
if (locationService.isConnected()) {
locationService.stopLocationUpdates(this);
locationService.disconnect();
}
view.setLocationIcon(false);
}
@Override
public void start() {
if (!isNewApiary()) {
populateApiary();
}
}
@SuppressWarnings("ConstantConditions")
@Override
public void onApiaryLoaded(Apiary apiary) {
this.apiary = apiary;
// Show apiary data on view
if (view.isActive()) {
// Set name
view.setName(apiary.getName());
// Set notes
view.setNotes(apiary.getNotes());
// Set location
if (apiary.hasLocation()) {
Location apiaryLocation = new Location("");
apiaryLocation.setLatitude(apiary.getLocationLat());
apiaryLocation.setLongitude(apiary.getLocationLong());
view.setLocation(apiaryLocation);
}
}
}
@Override
public void onDataNotAvailable() {
// Show error message
if (view.isActive()) {
view.showEmptyApiaryError();
}
}
@Override
public void onSuccess() {
// Close keyboard
view.closeKeyboard();
// Apiary saved successfully -> go back to apiaries activity
view.showApiariesList();
}
@Override
public void onFailure() {
// Close keyboard
view.closeKeyboard();
// Error saving apiaries
view.showSaveApiaryError();
}
@Override
public void onConnected(@Nullable Bundle bundle) {
// When we are connected to Google Play service
// Get last known recent location (maybe it's not very accurate)
Location lastLocation = locationService.getLastLocation();
// Note that this can be NULL if last location isn't already known
if (lastLocation != null) {
// Show last location
updateLocation(lastLocation);
}
// Begin polling for new location updates
locationService.createLocationRequest(this);
locationService.startLocationUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
// When we get a location update
if (location != null) {
// Show current location
updateLocation(location);
}
}
@Override
public void onConnectionSuspended(int cause) {
// We don't need to perform any action
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
// Show error msg
view.showGpsConnectionError();
}
/**
* Checks whether an apiary is new or not.
*
* @return true/false.
*/
private boolean isNewApiary() {
return apiaryId == AddEditApiaryActivity.NEW_APIARY;
}
/**
* Create an save a new apiary.
*
* @param name apiary name.
* @param latitude latitude coordinate.
* @param longitude longitude coordinate.
* @param notes apiary notes.
*/
private void createApiary(final String name, final Double latitude, final Double longitude,
final String notes) {
// Get next id
goBeesRepository.getNextApiaryId(new GoBeesDataSource.GetNextApiaryIdCallback() {
@Override
public void onNextApiaryIdLoaded(long apiaryId) {
saveApiary(apiaryId, name, latitude, longitude, notes);
}
});
}
/**
* Update and save an apiary.
*
* @param name apiary name.
* @param notes apiary notes.
*/
private void updateApiary(String name, Double latitude, Double longitude, String notes) {
if (!isNewApiary()) {
saveApiary(apiaryId, name, latitude, longitude, notes);
}
}
/**
* Saves (or update) the apiary.
*
* @param apiaryId apiary id.
* @param name apiary name.
* @param notes apiary notes.
*/
private void saveApiary(long apiaryId, String name, Double latitude, Double longitude,
String notes) {
// Set id
apiary.setId(apiaryId);
// Set name
apiary.setName(name);
// Set location
if (latitude != null && longitude != null) {
apiary.setLocationLat(latitude);
apiary.setLocationLong(longitude);
}
// Set notes
apiary.setNotes(notes);
// Reset current weather if exists
apiary.setCurrentWeather(null);
// Save it if it is correct
goBeesRepository.saveApiary(apiary, this);
}
/**
* Update apiary location.
*
* @param location new location.
*/
private void updateLocation(@NonNull Location location) {
view.setLocation(location);
}
/**
* Returns whether a location has been introduced.
*
* @param latitude latitude string.
* @param longitude longitude string.
* @return if it has location.
*/
private boolean hasLocation(String latitude, String longitude) {
return !Strings.isNullOrEmpty(latitude) && !Strings.isNullOrEmpty(longitude);
}
}