From 8333b8b8d86c4c38141d6a3468827c7ebe03f2aa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Rebelo?= <joserebelo@outlook.com>
Date: Fri, 20 Oct 2023 00:05:10 +0100
Subject: [PATCH] Mi Band 8: Sleep details parser (very very wip)

---
 .../xiaomi/activity/XiaomiActivityParser.java |  6 ++-
 .../activity/impl/SleepDetailsParser.java     | 51 +++++++++++++++++++
 2 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/impl/SleepDetailsParser.java

diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/XiaomiActivityParser.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/XiaomiActivityParser.java
index edbf395b8..5cbca661c 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/XiaomiActivityParser.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/XiaomiActivityParser.java
@@ -23,6 +23,7 @@ import org.slf4j.LoggerFactory;
 
 import nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.XiaomiSupport;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.activity.impl.DailyDetailsParser;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.activity.impl.SleepDetailsParser;
 
 public abstract class XiaomiActivityParser {
     private static final Logger LOG = LoggerFactory.getLogger(XiaomiActivityParser.class);
@@ -53,7 +54,10 @@ public abstract class XiaomiActivityParser {
 
                 break;
             case ACTIVITY_SLEEP:
-                // TODO
+                if (fileId.getDetailType() == XiaomiActivityFileId.DetailType.DETAILS) {
+                    return new SleepDetailsParser();
+                }
+
                 break;
         }
 
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/impl/SleepDetailsParser.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/impl/SleepDetailsParser.java
new file mode 100644
index 000000000..21748faa9
--- /dev/null
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/xiaomi/activity/impl/SleepDetailsParser.java
@@ -0,0 +1,51 @@
+/*  Copyright (C) 2023 José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.activity.impl;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+import nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.XiaomiSupport;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.activity.XiaomiActivityFileId;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.xiaomi.activity.XiaomiActivityParser;
+
+public class SleepDetailsParser extends XiaomiActivityParser {
+    private static final Logger LOG = LoggerFactory.getLogger(SleepDetailsParser.class);
+
+    @Override
+    public boolean parse(final XiaomiSupport support, final XiaomiActivityFileId fileId, final byte[] bytes) {
+        if (fileId.getVersion() != 2) {
+            LOG.warn("Unknown sleep details version {}", fileId.getVersion());
+            return false;
+        }
+
+        final ByteBuffer buf = ByteBuffer.wrap(bytes).order(ByteOrder.LITTLE_ENDIAN);
+        buf.get(); // header ? 0xF0
+
+        buf.get(); // ?
+        final int bedTime = buf.getInt();
+        final int wakeupTime = buf.getInt();
+        LOG.info("Bed time: {}, wake up time: {}", bedTime, wakeupTime);
+
+        // TODO everything else...
+
+        return false;
+    }
+}