Merge branch 'directions-api' into develop

app/build.gradle

@@ -26,6 +26,9 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    repositories {
+        maven { url "https://jitpack.io" }
+    }
 }
 
 dependencies {
@@ -47,6 +50,9 @@ dependencies {
     //osm
     implementation 'org.osmdroid:osmdroid-android:6.1.8'
 
+    //osm bonus pack
+    implementation 'com.github.MKergall:osmbonuspack:6.6.0'
+
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
     testImplementation 'org.mockito:mockito-core:2.7.22'

app/src/main/java/com/a1/nextlocation/MainActivity.java

@@ -17,6 +17,7 @@ import com.a1.nextlocation.fragments.HomeFragment;
 import com.a1.nextlocation.fragments.RouteFragment;
 import com.a1.nextlocation.fragments.SettingsFragment;
 import com.a1.nextlocation.fragments.StatisticFragment;
+import com.a1.nextlocation.network.ApiHandler;
 import com.a1.nextlocation.recyclerview.CouponListManager;
 import com.a1.nextlocation.recyclerview.LocationListManager;
 import com.a1.nextlocation.recyclerview.RouteListManager;

app/src/main/java/com/a1/nextlocation/fragments/HomeFragment.java

@@ -110,8 +110,6 @@ public class HomeFragment extends Fragment {
 
         mapView.getOverlays().add(customOverlay);
 
-
-
         // add the zoom controller
         IMapController mapController = mapView.getController();
         mapController.setZoom(15.0);

app/src/main/java/com/a1/nextlocation/fragments/RouteFragment.java

@@ -2,19 +2,29 @@ package com.a1.nextlocation.fragments;
 
 import android.os.Bundle;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
 import com.a1.nextlocation.R;
+import com.a1.nextlocation.data.Location;
+import com.a1.nextlocation.data.Route;
+import com.a1.nextlocation.json.DirectionsResult;
+import com.a1.nextlocation.network.ApiHandler;
+import com.a1.nextlocation.network.DirectionsListener;
 
 public class RouteFragment extends Fragment {
+    private static final String TAG = RouteFragment.class.getCanonicalName();
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        ApiHandler.INSTANCE.addListener(this::onDirectionsAvailable);
 
     }
 
@@ -24,4 +34,21 @@ public class RouteFragment extends Fragment {
         // Inflate the layout for this fragment
         return inflater.inflate(R.layout.fragment_route, container, false);
     }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+//        ApiHandler.INSTANCE.getDirections(8.681436,49.41461,8.687872,49.420318);
+        Route r = new Route("test");
+        r.addLocation(new Location("test",8.681436,49.41461,"route",null));
+        r.addLocation(new Location("test",8.687872,49.420318,"route",null));
+        ApiHandler.INSTANCE.getDirections(r);
+    }
+
+    public void onDirectionsAvailable(DirectionsResult result) {
+        Log.d(TAG, "onDirectionsAvailable: got result! " + result);
+        
+        
+    }
 }

app/src/main/java/com/a1/nextlocation/json/DirectionsResult.java

@@ -0,0 +1,164 @@
+package com.a1.nextlocation.json;
+
+import android.util.Log;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import com.google.gson.JsonPrimitive;
+
+import org.json.JSONArray;
+import org.osmdroid.util.GeoPoint;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+import java.util.List;
+
+public class DirectionsResult {
+    private static final String TAG = DirectionsResult.class.getCanonicalName();
+    private List<DirectionsStep> steps = new ArrayList<>();
+    private double distance;
+    private double duration;
+    private double[][] wayPointCoordinates;
+
+    public List<DirectionsStep> getSteps() {
+        return steps;
+    }
+
+    public void setSteps(List<DirectionsStep> steps) {
+        this.steps = steps;
+    }
+
+    public double getDistance() {
+        return distance;
+    }
+
+    public void setDistance(double distance) {
+        this.distance = distance;
+    }
+
+    public double getDuration() {
+        return duration;
+    }
+
+    public void setDuration(double duration) {
+        this.duration = duration;
+    }
+
+    public void addStep(DirectionsStep step) {
+        this.steps.add(step);
+    }
+
+    /**
+     * parses a given json string into this object. It gets all the waypoints and steps and combines them so that every step also has the correct coordinates associated with it
+     * @param json the json string to parse.
+     */
+    public void parse(String json) {
+
+        Gson gson = new GsonBuilder().setPrettyPrinting().create();
+        JsonObject feature = JsonParser.parseString(json).getAsJsonObject().get("features").getAsJsonArray().get(0).getAsJsonObject();
+        JsonObject properties = feature.get("properties").getAsJsonObject();
+        JsonArray wayPointCoordinates = feature.get("geometry").getAsJsonObject().getAsJsonArray("coordinates");
+        this.wayPointCoordinates = new double[wayPointCoordinates.size()][2];
+
+
+        // fill the way point coordinates list for later use
+        for (int i = 0; i < wayPointCoordinates.size(); i++) {
+            JsonElement j = wayPointCoordinates.get(i);
+            JsonArray arr = j.getAsJsonArray();
+            this.wayPointCoordinates[i][0] = arr.get(0).getAsDouble();
+            this.wayPointCoordinates[i][1] = arr.get(1).getAsDouble();
+        }
+
+
+        JsonArray segments = properties.getAsJsonArray("segments");
+
+        for (JsonElement element : segments) {
+            JsonObject segment = element.getAsJsonObject();
+
+            setDistance(segment.get("distance").getAsDouble());
+            setDuration(segment.get("duration").getAsDouble());
+
+            JsonArray steps = segment.getAsJsonArray("steps");
+
+            for (JsonElement j : steps) {
+
+                DirectionsStep step = gson.fromJson(j,DirectionsStep.class);
+                double lat;
+                double longl;
+
+                // kinda stinky but it works
+                for (int i = 0; i < 2; i++) {
+                    lat = this.wayPointCoordinates[step.getWay_points().get(i)][0];
+                    longl = this.wayPointCoordinates[step.getWay_points().get(i)][1];
+                    step.getWaypoints()[i] = new GeoPoint(lat,longl);
+                }
+
+                addStep(step);
+                Log.d(TAG, "parse: added step" + step);
+            }
+        }
+
+    }
+
+    public void parseRoute(String json) {
+
+        Gson gson = new GsonBuilder().setPrettyPrinting().create();
+        JsonArray routes = JsonParser.parseString(json).getAsJsonObject().getAsJsonArray("routes");
+        for (JsonElement element : routes) {
+            JsonObject route = element.getAsJsonObject();
+            JsonObject summary = route.getAsJsonObject("summary");
+            this.distance = summary.get("distance").getAsDouble();
+            this.duration = summary.get("duration").getAsDouble();
+
+            JsonPrimitive geometry = route.getAsJsonPrimitive("geometry");
+            JsonArray wayPointCoordinates = GeometryDecoder.decodeGeometry(geometry.getAsString(),false);
+            this.wayPointCoordinates = new double[wayPointCoordinates.size()][2];
+
+
+            // fill the way point coordinates list for later use
+            for (int i = 0; i < wayPointCoordinates.size(); i++) {
+                JsonElement j = wayPointCoordinates.get(i);
+                JsonArray arr = j.getAsJsonArray();
+                this.wayPointCoordinates[i][0] = arr.get(0).getAsDouble();
+                this.wayPointCoordinates[i][1] = arr.get(1).getAsDouble();
+            }
+
+
+            JsonArray segments = route.getAsJsonArray("segments");
+
+            for (JsonElement e : segments) {
+                JsonObject segment = e.getAsJsonObject();
+
+                setDistance(segment.get("distance").getAsDouble());
+                setDuration(segment.get("duration").getAsDouble());
+
+                JsonArray steps = segment.getAsJsonArray("steps");
+
+                for (JsonElement j : steps) {
+
+                    DirectionsStep step = gson.fromJson(j,DirectionsStep.class);
+                    double lat;
+                    double longl;
+
+                    // kinda stinky but it works
+                    for (int i = 0; i < 2; i++) {
+                        lat = this.wayPointCoordinates[step.getWay_points().get(i)][0];
+                        longl = this.wayPointCoordinates[step.getWay_points().get(i)][1];
+                        step.getWaypoints()[i] = new GeoPoint(lat,longl);
+                    }
+
+                    addStep(step);
+                    Log.d(TAG, "parse: added step" + step);
+                }
+            }
+
+        }
+
+
+
+    }
+}

app/src/main/java/com/a1/nextlocation/json/DirectionsStep.java

@@ -0,0 +1,72 @@
+package com.a1.nextlocation.json;
+
+import org.osmdroid.util.GeoPoint;
+
+import java.util.ArrayList;
+
+/**
+ * pojo class that holds the step object from the api response
+ */
+public class DirectionsStep {
+    private double distance;
+    private double duration;
+    private String instruction;
+    private String name;
+    /**
+     * these are the actual waypoints that the step refers to. The first is the beginning of the step, and the second is what it leads to.
+     * The second geopoint is always the first geopoint of the next step in the list of the {@link DirectionsResult} object.
+     */
+    private GeoPoint[] waypoints = new GeoPoint[2];
+    /**
+     * this is a list of the waypoints that are in the response, it is called way_points so it can be automatically serialized with gson
+     */
+    private ArrayList<Integer> way_points;
+
+    public double getDistance() {
+        return distance;
+    }
+
+    public void setDistance(double distance) {
+        this.distance = distance;
+    }
+
+    public double getDuration() {
+        return duration;
+    }
+
+    public void setDuration(double duration) {
+        this.duration = duration;
+    }
+
+    public String getInstruction() {
+        return instruction;
+    }
+
+    public void setInstruction(String instruction) {
+        this.instruction = instruction;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public ArrayList<Integer> getWay_points() {
+        return way_points;
+    }
+
+    public void setWay_points(ArrayList<Integer> way_points) {
+        this.way_points = way_points;
+    }
+
+    public GeoPoint[] getWaypoints() {
+        return waypoints;
+    }
+
+    public void setWaypoints(GeoPoint[] waypoints) {
+        this.waypoints = waypoints;
+    }
+}

app/src/main/java/com/a1/nextlocation/json/GeometryDecoder.java

@@ -0,0 +1,63 @@
+package com.a1.nextlocation.json;
+
+import com.google.gson.JsonArray;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+
+/**
+ * source: https://github.com/GIScience/openrouteservice-docs#geometry-decoding
+ */
+public class GeometryDecoder {
+
+    public static JsonArray decodeGeometry(String encodedGeometry, boolean inclElevation) {
+        JsonArray geometry = new JsonArray();
+        int len = encodedGeometry.length();
+        int index = 0;
+        int lat = 0;
+        int lng = 0;
+        int ele = 0;
+
+        while (index < len) {
+            int result = 1;
+            int shift = 0;
+            int b;
+            do {
+                b = encodedGeometry.charAt(index++) - 63 - 1;
+                result += b << shift;
+                shift += 5;
+            } while (b >= 0x1f);
+            lat += (result & 1) != 0 ? ~(result >> 1) : (result >> 1);
+
+            result = 1;
+            shift = 0;
+            do {
+                b = encodedGeometry.charAt(index++) - 63 - 1;
+                result += b << shift;
+                shift += 5;
+            } while (b >= 0x1f);
+            lng += (result & 1) != 0 ? ~(result >> 1) : (result >> 1);
+
+
+            if(inclElevation){
+                result = 1;
+                shift = 0;
+                do {
+                    b = encodedGeometry.charAt(index++) - 63 - 1;
+                    result += b << shift;
+                    shift += 5;
+                } while (b >= 0x1f);
+                ele += (result & 1) != 0 ? ~(result >> 1) : (result >> 1);
+            }
+
+            JsonArray location = new JsonArray();
+            location.add(lat / 1E5);
+            location.add(lng / 1E5);
+            if(inclElevation){
+                location.add((float) (ele / 100));
+            }
+            geometry.add(location);
+        }
+        return geometry;
+    }
+}

app/src/main/java/com/a1/nextlocation/network/ApiHandler.java

@@ -4,14 +4,20 @@ import android.util.Log;
 
 import com.a1.nextlocation.data.Location;
 import com.a1.nextlocation.data.Route;
+import com.a1.nextlocation.json.DirectionsResult;
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Objects;
 import java.util.concurrent.atomic.AtomicReference;
 
 import okhttp3.MediaType;
 import okhttp3.OkHttpClient;
 import okhttp3.Request;
+import okhttp3.RequestBody;
 import okhttp3.Response;
 
 public enum ApiHandler {
@@ -22,21 +28,22 @@ public enum ApiHandler {
     public static final MediaType JSON = MediaType.get("application/json; charset=utf-8");
     private final String BASE_URL = "https://api.openrouteservice.org/v2/directions/";
     private final String API_KEY = "5b3ce3597851110001cf6248d4eee2099f724255918adc71cc502b2a";
-    private final String DIRECTIONS_MODE = "foot_walking";
+    private final String DIRECTIONS_MODE = "foot-walking";
+    private List<DirectionsListener> listeners = new ArrayList<>();
 
     private OkHttpClient client = new OkHttpClient();
 
-    public Route getDirections(Location startLocation, Location endLocation) {
+    public void getDirections(Location startLocation, Location endLocation) {
-        return getDirections(startLocation.getCoordinates(),endLocation.getCoordinates());
+        getDirections(startLocation.getCoordinates(),endLocation.getCoordinates());
     }
 
-    public Route getDirections(double startLat, double startLong, double endLat, double endLong) {
+    public void getDirections(double startLat, double startLong, double endLat, double endLong) {
-        return getDirections(startLat + "," + startLong, endLat + "," + endLong);
+        getDirections(startLat + "," + startLong, endLat + "," + endLong);
     }
 
-    public Route getDirections(String startLocation, String endLocation) {
+    public void getDirections(String startLocation, String endLocation) {
+
         String requestUrl = BASE_URL + DIRECTIONS_MODE + "?api_key=" + API_KEY + "&start=" +startLocation + "&end=" + endLocation;
-        AtomicReference<Route> res = null;
         Thread t = new Thread(() -> {
 
             Request request = new Request.Builder().url(requestUrl).build();
@@ -45,6 +52,14 @@ public enum ApiHandler {
                 if (response.body() != null) {
                     String responseString = Objects.requireNonNull(response.body()).string();
                     Log.d(TAG, "getDirections: got response: " + responseString);
+
+                    DirectionsResult result = new DirectionsResult();
+                    result.parse(responseString);
+                    Log.d(TAG, "getDirections: " + result.getSteps().size());
+
+                    for (DirectionsListener listener : listeners) {
+                        listener.onDirectionsAvailable(result);
+                    }
                 }
 
             } catch (IOException e) {
@@ -54,12 +69,59 @@ public enum ApiHandler {
 
         t.start();
 
-        try {
+    }
-            t.join();
+
-        } catch (InterruptedException e) {
+    public void addListener(DirectionsListener listener) {
-            e.printStackTrace();
+        this.listeners.add(listener);
+    }
+
+    public void getDirections(Route route) {
+//        for (int i = 0; i < route.getLocations().size()-1; i+= 2) {
+//            Location start = route.getLocations().get(i);
+//            Location end = route.getLocations().get(i+1);
+//            getDirections(start,end);
+//        }
+
+        ArrayList<double[]> allCoords = new ArrayList<>();
+        for (Location location : route.getLocations()) {
+            allCoords.add(location.getCoordinatesAsDoubles());
         }
-        return res.get();
+
+        String body = "{\"coordinates\":" + new Gson().toJson(allCoords) + "}";
+
+
+        String requestUrl = BASE_URL + DIRECTIONS_MODE + "?api_key=" + API_KEY;
+
+        Thread t = new Thread(() -> {
+
+            RequestBody requestBody = RequestBody.create(body,JSON);
+            Request request = new Request.Builder()
+                    .url(requestUrl)
+                    .post(requestBody)
+                    .build();
+
+            try (Response response = client.newCall(request).execute()) {
+                if (response.body() != null) {
+                    String responseString = Objects.requireNonNull(response.body()).string();
+                    Log.d(TAG, "getDirections: got response: " + responseString);
+
+                    DirectionsResult result = new DirectionsResult();
+                    result.parseRoute(responseString);
+                    Log.d(TAG, "getDirections: " + result.getSteps().size());
+
+                    for (DirectionsListener listener : listeners) {
+                        listener.onDirectionsAvailable(result);
+                    }
+                }
+
+            } catch (IOException e) {
+                Log.d(TAG, "getDirections: caught exception: " + e.getLocalizedMessage());
+            }
+        });
+
+        t.start();
+
+
     }
 
 

app/src/main/java/com/a1/nextlocation/network/DirectionsListener.java

@@ -0,0 +1,8 @@
+package com.a1.nextlocation.network;
+
+import com.a1.nextlocation.data.Route;
+import com.a1.nextlocation.json.DirectionsResult;
+
+public interface DirectionsListener {
+    void onDirectionsAvailable(DirectionsResult result);
+}