Register DateTime adapter for Hive

lib/hive/hive_adapters.dart

@@ -6,5 +6,6 @@ import 'package:hive_ce/hive.dart';
 @GenerateAdapters([
   AdapterSpec<Color>(),
   AdapterSpec<IconData>(),
+  AdapterSpec<DateTime>(),
 ])
 part 'hive_adapters.g.dart';

lib/hive/hive_adapters.g.dart

@@ -83,3 +83,58 @@ class IconDataAdapter extends TypeAdapter<IconData> {
           runtimeType == other.runtimeType &&
           typeId == other.typeId;
 }
+
+class DateTimeAdapter extends TypeAdapter<DateTime> {
+  @override
+  final typeId = 2;
+
+  @override
+  DateTime read(BinaryReader reader) {
+    final numOfFields = reader.readByte();
+    final fields = <int, dynamic>{
+      for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
+    };
+    return DateTime(
+      (fields[0] as num).toInt(),
+      fields[1] == null ? 1 : (fields[1] as num).toInt(),
+      fields[2] == null ? 1 : (fields[2] as num).toInt(),
+      fields[3] == null ? 0 : (fields[3] as num).toInt(),
+      fields[4] == null ? 0 : (fields[4] as num).toInt(),
+      fields[5] == null ? 0 : (fields[5] as num).toInt(),
+      fields[6] == null ? 0 : (fields[6] as num).toInt(),
+      fields[7] == null ? 0 : (fields[7] as num).toInt(),
+    );
+  }
+
+  @override
+  void write(BinaryWriter writer, DateTime obj) {
+    writer
+      ..writeByte(8)
+      ..writeByte(0)
+      ..write(obj.year)
+      ..writeByte(1)
+      ..write(obj.month)
+      ..writeByte(2)
+      ..write(obj.day)
+      ..writeByte(3)
+      ..write(obj.hour)
+      ..writeByte(4)
+      ..write(obj.minute)
+      ..writeByte(5)
+      ..write(obj.second)
+      ..writeByte(6)
+      ..write(obj.millisecond)
+      ..writeByte(7)
+      ..write(obj.microsecond);
+  }
+
+  @override
+  int get hashCode => typeId.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is DateTimeAdapter &&
+          runtimeType == other.runtimeType &&
+          typeId == other.typeId;
+}

lib/hive/hive_adapters.g.yaml

@@ -1,7 +1,7 @@
 # Generated by Hive CE
 # Manual modifications may be necessary for certain migrations
 # Check in to version control
-nextTypeId: 2
+nextTypeId: 3
 types:
   Color:
     typeId: 0
@@ -23,3 +23,23 @@ types:
         index: 3
       fontFamilyFallback:
         index: 4
+  DateTime:
+    typeId: 2
+    nextIndex: 8
+    fields:
+      year:
+        index: 0
+      month:
+        index: 1
+      day:
+        index: 2
+      hour:
+        index: 3
+      minute:
+        index: 4
+      second:
+        index: 5
+      millisecond:
+        index: 6
+      microsecond:
+        index: 7

lib/hive/hive_registrar.g.dart

@@ -18,6 +18,7 @@ extension HiveRegistrar on HiveInterface {
     registerAdapter(AppSettingsAdapter());
     registerAdapter(CategoryAdapter());
     registerAdapter(ColorAdapter());
+    registerAdapter(DateTimeAdapter());
     registerAdapter(GlobalSettingsAdapter());
     registerAdapter(IconDataAdapter());
     registerAdapter(SmsHandlerSettingsAdapter());
@@ -35,6 +36,7 @@ extension IsolatedHiveRegistrar on IsolatedHiveInterface {
     registerAdapter(AppSettingsAdapter());
     registerAdapter(CategoryAdapter());
     registerAdapter(ColorAdapter());
+    registerAdapter(DateTimeAdapter());
     registerAdapter(GlobalSettingsAdapter());
     registerAdapter(IconDataAdapter());
     registerAdapter(SmsHandlerSettingsAdapter());