1 files changed, 55 insertions, 0 deletions
diff --git a/src/org/traccar/OdometerHandler.java b/src/org/traccar/OdometerHandler.java
new file mode 100644
index 000000000..d5860c02e
--- /dev/null
+++ b/src/org/traccar/OdometerHandler.java
@@ -0,0 +1,55 @@
+/**
+ * 
+ */
+package org.traccar;
+
+import org.traccar.helper.DistanceCalculator;
+import org.traccar.helper.Log;
+import org.traccar.model.Position;
+
+/**
+ * <p>
+ * Odometer - total mileage calculation handler
+ * </p>
+ * 
+ * @author Amila Silva
+ *
+ */
+public class OdometerHandler extends BaseDataHandler {
+
+    public OdometerHandler() {
+        Log.debug("System based odometer calculation enabled for all devices");
+    }
+
+    private Position getLastPosition(long deviceId) {
+        if (Context.getConnectionManager() != null) {
+            return Context.getConnectionManager().getLastPosition(deviceId);
+        }
+        return null;
+    }
+
+    private Position calculateDistance(Position position) {
+        Position last = getLastPosition(position.getDeviceId());
+        if (last != null) {
+            // set odometer only on movement
+            double odometer = 0.0;
+            if (last.getSpeed() == 0 && position.getSpeed() == 0) {
+                odometer = last.getOdometer();
+            } else {
+                double distance = DistanceCalculator.distance(
+                        position.getLatitude(), position.getLongitude(),
+                        last.getLatitude(), last.getLongitude());
+                distance = Math.round((distance) * 100.0) / 100.0;
+                odometer = distance + last.getOdometer();
+            }
+            position.setOdometer(odometer);
+        }
+        return position;
+    }
+
+    @Override
+    protected Position handlePosition(Position position) {
+        return calculateDistance(position);
+    }
+
+}