Export positions to GPX

4 files changed, 109 insertions, 1 deletions

diff --git a/src/org/traccar/api/resource/PositionResource.java b/src/org/traccar/api/resource/PositionResource.java
index 92b62c0a6..488964f23 100644
--- a/src/org/traccar/api/resource/PositionResource.java
+++ b/src/org/traccar/api/resource/PositionResource.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2015 - 2016 Anton Tananaev (anton.tananaev@gmail.com)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,7 @@ import org.traccar.Context;
 import org.traccar.api.BaseResource;
 import org.traccar.model.Position;
 import org.traccar.web.CsvBuilder;
+import org.traccar.web.GpxBuilder;
 import org.traccar.web.JsonConverter;
 
 import javax.ws.rs.Consumes;
@@ -39,6 +40,8 @@ public class PositionResource extends BaseResource {
 
     public static final String TEXT_CSV = "text/csv";
     public static final String CONTENT_DISPOSITION_VALUE_CSV = "attachment; filename=positions.csv";
+    public static final String GPX = "application/gpx+xml";
+    public static final String CONTENT_DISPOSITION_VALUE_GPX = "attachment; filename=positions.gpx";
 
     @GET
     @Produces(MediaType.APPLICATION_JSON)
@@ -67,4 +70,16 @@ public class PositionResource extends BaseResource {
         return Response.ok(csv.build()).header(HttpHeaders.CONTENT_DISPOSITION, CONTENT_DISPOSITION_VALUE_CSV).build();
     }
 
+    @GET
+    @Produces(GPX)
+    public Response getGpx(
+            @QueryParam("deviceId") long deviceId, @QueryParam("from") String from, @QueryParam("to") String to)
+            throws SQLException {
+        Context.getPermissionsManager().checkDevice(getUserId(), deviceId);
+        GpxBuilder gpx = new GpxBuilder(Context.getIdentityManager().getDeviceById(deviceId).getName());
+        gpx.addPositions(Context.getDataManager().getPositions(
+                deviceId, JsonConverter.parseDate(from), JsonConverter.parseDate(to)));
+        return Response.ok(gpx.build()).header(HttpHeaders.CONTENT_DISPOSITION, CONTENT_DISPOSITION_VALUE_GPX).build();
+    }
+
 }
diff --git a/src/org/traccar/helper/UnitsConverter.java b/src/org/traccar/helper/UnitsConverter.java
index 4bc7348db..70916727e 100644
--- a/src/org/traccar/helper/UnitsConverter.java
+++ b/src/org/traccar/helper/UnitsConverter.java
@@ -45,6 +45,10 @@ public final class UnitsConverter {
         return value * KNOTS_TO_MPS_RATIO;
     }
 
+    public static double mpsFromKnots(double value) {
+        return value / KNOTS_TO_MPS_RATIO;
+    }
+
     public static double knotsFromCps(double value) { // cm/s
         return value * KNOTS_TO_CPS_RATIO;
     }
diff --git a/src/org/traccar/web/CsvBuilder.java b/src/org/traccar/web/CsvBuilder.java
index f59aabc7f..4afc33144 100644
--- a/src/org/traccar/web/CsvBuilder.java
+++ b/src/org/traccar/web/CsvBuilder.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2016 Andrey Kunitsyn (abyss@fox5.ru)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.traccar.web;
 
 import java.beans.Introspector;
diff --git a/src/org/traccar/web/GpxBuilder.java b/src/org/traccar/web/GpxBuilder.java
new file mode 100644
index 000000000..f9bebb730
--- /dev/null
+++ b/src/org/traccar/web/GpxBuilder.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
+ * Copyright 2016 Andrey Kunitsyn (abyss@fox5.ru)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.web;
+
+import java.util.Collection;
+
+import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormatter;
+import org.joda.time.format.ISODateTimeFormat;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+public class GpxBuilder {
+
+    private StringBuilder builder = new StringBuilder();
+    private static final String HEADER = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>"
+            + "<gpx xmlns=\"http://www.topografix.com/GPX/1/1\" creator=\"Traccar\" version=\"1.1\" "
+            + "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" "
+            + "xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 "
+            + "http://www.topografix.com/GPX/1/1/gpx.xsd\"><trk>\n";
+    private static final String NAME = "<name>%1$s</name><trkseg>%n";
+    private static final String POINT = "<trkpt lat=\"%1$f\" lon=\"%2$f\">"
+            + "<time>%3$s</time>"
+            + "<geoidheight>%4$f</geoidheight>"
+            + "<course>%5$f</course>"
+            + "<speed>%6$f</speed>"
+            + "</trkpt>%n";
+    private static final String FOOTER = "</trkseg></trk></gpx>";
+
+    private static final DateTimeFormatter DATE_FORMAT = ISODateTimeFormat.dateTime();
+
+    public GpxBuilder() {
+        builder.append(HEADER);
+        builder.append("<trkseg>\n");
+    }
+
+    public GpxBuilder(String name) {
+        builder.append(HEADER);
+        builder.append(String.format(NAME, name));
+    }
+
+    public void addPosition(Position position) {
+        builder.append(String.format(POINT, position.getLatitude(), position.getLongitude(),
+                DATE_FORMAT.print(new DateTime(position.getFixTime())), position.getAltitude(),
+                position.getCourse(), UnitsConverter.mpsFromKnots(position.getSpeed())));
+    }
+
+    public void addPositions(Collection<Position> positions) {
+        for (Position position : positions) {
+            addPosition(position);
+        }
+    }
+
+    public String build() {
+        builder.append(FOOTER);
+        return builder.toString();
+    }
+
+}