From 938085b5fa8da6854ae91b3d8efe12165775e64b Mon Sep 17 00:00:00 2001
From: Arjan Schrijver <a_gadgetbridge@anymore.nl>
Date: Sat, 4 Jan 2025 14:50:26 +0100
Subject: [PATCH] Moyoung: Add support for world clocks

---
 .../moyoung/ColmiI28UltraCoordinator.java     | 10 +++++
 .../devices/moyoung/MoyoungConstants.java     |  2 +-
 .../devices/moyoung/MoyoungDeviceSupport.java | 38 +++++++++++++++----
 3 files changed, 42 insertions(+), 8 deletions(-)

diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/ColmiI28UltraCoordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/ColmiI28UltraCoordinator.java
index bf2b0474e..408b4e392 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/ColmiI28UltraCoordinator.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/ColmiI28UltraCoordinator.java
@@ -65,4 +65,14 @@ public class ColmiI28UltraCoordinator extends AbstractMoyoungDeviceCoordinator {
     public int getAlarmSlotCount(GBDevice device) {
         return 8;
     }
+
+    @Override
+    public int getWorldClocksSlotCount() {
+        return 6;
+    }
+
+    @Override
+    public int getWorldClocksLabelLength() {
+        return 30;
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/MoyoungConstants.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/MoyoungConstants.java
index 26542ef69..9e902889e 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/MoyoungConstants.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/moyoung/MoyoungConstants.java
@@ -212,7 +212,7 @@ public class MoyoungConstants {
     public static final byte CMD_SET_ALARM_CLOCK = 17;                              // (?) {id, enable ? 1 : 0, repeat, hour, minute, i >> 8, i, repeatMode}, repeatMode is 0(SINGLE), 127(EVERYDAY), or bitmask of 1,2,4,8,16,32,64(SUNDAY-SATURDAY) is 0,1,2, i is ((year << 12) + (month << 8) + day) where year is 2015-based, month and day start at 1 for repeatMode=SINGLE and 0 otherwise, repeat is 0(SINGLE),1(EVERYDAY),2(OTHER)
 
     public static final byte CMD_ADVANCED_QUERY = (byte) 0xb9;
-    public static final byte CMD_DAGPT = (byte) 0xbb;
+    public static final byte CMD_ADVANCED_CMD = (byte) 0xbb;
 
     public static final byte CMD_QUERY_POWER_SAVING = (byte) 0xa4;
     public static final byte CMD_SET_POWER_SAVING = (byte) 0x94;
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/moyoung/MoyoungDeviceSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/moyoung/MoyoungDeviceSupport.java
index 984ef7eb1..e60ed1e7b 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/moyoung/MoyoungDeviceSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/moyoung/MoyoungDeviceSupport.java
@@ -47,6 +47,7 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Objects;
 import java.util.Set;
+import java.util.TimeZone;
 import java.util.UUID;
 
 import de.greenrobot.dao.query.QueryBuilder;
@@ -489,12 +490,6 @@ public class MoyoungDeviceSupport extends AbstractBTLEDeviceSupport {
             return true;
         }
 
-        if (packetType == MoyoungConstants.CMD_DAGPT)
-        {
-            LOG.info("Da GPT started on watch");
-            return true;
-        }
-
         if (packetType == MoyoungConstants.CMD_FIND_MY_PHONE)
         {
             LOG.info("Find my phone started on watch");
@@ -838,7 +833,36 @@ public class MoyoungDeviceSupport extends AbstractBTLEDeviceSupport {
 
     @Override
     public void onSetWorldClocks(ArrayList<? extends WorldClock> clocks) {
-        // TODO
+        final TimeZone localTZ = Calendar.getInstance().getTimeZone();
+        try {
+            TransactionBuilder builder = performInitialized("sendWorldClocks");
+            for (byte i=1; i<getDevice().getDeviceCoordinator().getWorldClocksSlotCount(); i++) {
+                LOG.info("Deleting world clock " + i);
+                ByteBuffer payload = ByteBuffer.allocate(3);
+                payload.put((byte) 0x00);
+                payload.put((byte) 0x03); // Delete clock
+                payload.put(i);
+                sendPacket(builder, MoyoungPacketOut.buildPacket(mtu, MoyoungConstants.CMD_ADVANCED_CMD, payload.array()));
+            }
+            byte currentNr = 1;
+            for (WorldClock clock : clocks) {
+                LOG.info("Sending world clock " + currentNr);
+                TimeZone timezone = TimeZone.getTimeZone(clock.getTimeZoneId());
+                ByteBuffer payload = ByteBuffer.allocate(19 + clock.getLabel().getBytes().length).order(ByteOrder.LITTLE_ENDIAN);
+                payload.put((byte) 0x00);
+                payload.put((byte) 0x02); // Set/edit clock
+                payload.put(currentNr);
+                payload.putInt(timezone.getOffset(System.currentTimeMillis()) / 1000); // Offset in secs vs UTC
+                payload.putLong(0); // 8 unidentified bytes, but using 0x00 works
+                payload.putInt((timezone.getOffset(System.currentTimeMillis()) - localTZ.getOffset(System.currentTimeMillis())) / 1000); // Offset in secs vs local timezone
+                payload.put(clock.getLabel().getBytes());
+                sendPacket(builder, MoyoungPacketOut.buildPacket(mtu, MoyoungConstants.CMD_ADVANCED_CMD, payload.array()));
+                currentNr++;
+            }
+            builder.queue(getQueue());
+        } catch (IOException e) {
+            LOG.error("Error sending world clocks: ", e);
+        }
     }
 
     @Override