From 1a1126d2d39220f3f28d98662a8c3d5fd4c1cfee Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Tue, 25 Jul 2023 05:15:13 -0700
Subject: Handle ST410 no GPS data

---
 .../traccar/protocol/SuntechProtocolDecoder.java   | 26 ++++++++++++++--------
 .../protocol/SuntechProtocolDecoderTest.java       |  3 +++
 2 files changed, 20 insertions(+), 9 deletions(-)

diff --git a/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java b/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
index 047a1822a..86a8bf6fe 100644
--- a/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/SuntechProtocolDecoder.java
@@ -271,18 +271,26 @@ public class SuntechProtocolDecoder extends BaseProtocolDecoder {
             index += 1; // collaborative network
         }
 
-        DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHH:mm:ss");
-        dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
-        position.setTime(dateFormat.parse(values[index++] + values[index++]));
+        if (values[index].isEmpty()) {
 
-        position.setLatitude(Double.parseDouble(values[index++]));
-        position.setLongitude(Double.parseDouble(values[index++]));
-        position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(values[index++])));
-        position.setCourse(Double.parseDouble(values[index++]));
+            getLastLocation(position, null);
 
-        position.set(Position.KEY_SATELLITES, Integer.parseInt(values[index++]));
+        } else {
 
-        position.setValid(values[index++].equals("1"));
+            DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHH:mm:ss");
+            dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+            position.setTime(dateFormat.parse(values[index++] + values[index++]));
+
+            position.setLatitude(Double.parseDouble(values[index++]));
+            position.setLongitude(Double.parseDouble(values[index++]));
+            position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(values[index++])));
+            position.setCourse(Double.parseDouble(values[index++]));
+
+            position.set(Position.KEY_SATELLITES, Integer.parseInt(values[index++]));
+
+            position.setValid(values[index++].equals("1"));
+
+        }
 
         return position;
     }
diff --git a/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
index 884f13350..cbb68132f 100644
--- a/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/SuntechProtocolDecoderTest.java
@@ -12,6 +12,9 @@ public class SuntechProtocolDecoderTest extends ProtocolTest {
 
         var decoder = inject(new SuntechProtocolDecoder(null));
 
+        verifyAttributes(decoder, buffer(
+                "ST410STT;109815653;445;03;16531;724;10;-77;6011;7;16273;724;10;7511;0;0;13903;724;10;6011;0;0;7671;724;10;7111;0;0;16533;724;10;6011;0;0;0;0;0;0;0;0;0;0;0;0;0;0;3.86;0;0098;1;003;;;;;;;;;"));
+
         verifyPosition(decoder, buffer(
                 "ALT;0840037569;FFFFFF;84;1.0.6;0;20221228;11:33:05;00004490;724;11;05D3;33;-22.845935;-46.322000;0.00;0.00;18;0;00000001;00000000;99;;;;08E3800F;4.1;12.37;0;0;0;0;4;;;;"));
 
-- 
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