From e1be8916132fd0102cfe298a75abcfdcd43f244b Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton@traccar.org>
Date: Sat, 20 Jul 2024 17:37:32 -0700
Subject: Support Jimi IoT extended heartbeat

---
 .../java/org/traccar/protocol/Gt06ProtocolDecoder.java   | 16 ++++++++++++++++
 .../org/traccar/protocol/Gt06ProtocolDecoderTest.java    |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
index f17671cd7..e25499190 100644
--- a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
@@ -88,6 +88,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
     public static final int MSG_X1_GPS = 0x34;
     public static final int MSG_X1_PHOTO_INFO = 0x35;
     public static final int MSG_X1_PHOTO_DATA = 0x36;
+    public static final int MSG_STATUS_2 = 0x36;           // Jimi IoT 4G
     public static final int MSG_WIFI_2 = 0x69;
     public static final int MSG_GPS_MODULAR = 0x70;
     public static final int MSG_WIFI_4 = 0xF3;
@@ -218,6 +219,7 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
     private static boolean hasStatus(int type) {
         switch (type) {
             case MSG_STATUS:
+            case MSG_STATUS_2:
             case MSG_LBS_STATUS:
             case MSG_GPS_LBS_STATUS_1:
             case MSG_GPS_LBS_STATUS_2:
@@ -845,6 +847,20 @@ public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
                 }
             }
 
+            if (type == MSG_STATUS_2) {
+                buf.readUnsignedByte(); // language
+                while (buf.readableBytes() > 6) {
+                    int moduleType = buf.readUnsignedShort();
+                    int moduleLength = buf.readUnsignedByte();
+                    switch (moduleType) {
+                        case 0x0018 -> position.set(Position.KEY_BATTERY, buf.readUnsignedShort() / 100.0);
+                        case 0x0032 -> position.set("startupStatus", buf.readUnsignedByte());
+                        case 0x006A -> position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
+                        default -> buf.skipBytes(moduleLength);
+                    }
+                }
+            }
+
             if (type == MSG_GPS_LBS_STATUS_5) {
                 buf.readUnsignedByte(); // language
                 position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
diff --git a/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
index da070e224..bb809529a 100644
--- a/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
+++ b/src/test/java/org/traccar/protocol/Gt06ProtocolDecoderTest.java
@@ -17,6 +17,10 @@ public class Gt06ProtocolDecoderTest extends ProtocolTest {
         verifyNull(decoder, binary(
                 "78780D01086471700328358100093F040D0A"));
 
+        verifyAttribute(decoder, binary(
+                "787817360005040002003201010018020192006a015f0324aeaf0d0a"),
+                Position.KEY_BATTERY, 4.02);
+
         verifyPosition(decoder, binary(
                 "787840a218061b0e0f05cf021d22430aa2660b005c00014e140000026500000000024d4e02114504df06031c010007d00000000000086973105524576500c802a86fda0d0a"));
 
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