optimised initial setup

Author: DattatreyaReddy

lib/src/common/constants/enums/generic_entity.dart

@@ -0,0 +1,5 @@
+import '../../utils/json_abstract.dart';
+
+abstract class GenericEntity<T> extends JsonAbstract {
+  T get id;
+}

lib/src/common/utils/app_utils.dart

@@ -91,6 +91,10 @@ abstract class AppUtils {
           (List<RecordSnapshot<T, Map<String, Object?>>> event) =>
               event.map(convertSnapNonNull(constructor)).toList();
 
+  static T? Function(JsonObject? value) convertGet<T>(
+          T Function(JsonObject) fromJson) =>
+      (value) => value != null ? fromJson(value) : null;
+
   static int currentDay(AsyncValue<DateTime?> dob) {
     if (dob.valueOrNull == null) return 0;
     return DateTime.now().difference(dob.valueOrNull!).inDays;

lib/src/common/utils/custom_types.dart

@@ -6,8 +6,13 @@
 
 import 'dart:async';
 
+import '../constants/enums/generic_entity.dart';
+
 typedef ConvertFunction<S, R> = R Function(S);
 
 typedef JsonObject = Map<String, Object?>;
 
 typedef AsyncConvertFunction<S, R> = FutureOr<R> Function(S event);
+
+typedef GenericFromJson<T extends GenericEntity> = T Function(
+    Map<String, dynamic>);

lib/src/common/utils/extensions/custom_extensions/store_ref_extensions.dart

@@ -6,6 +6,4 @@
 
 abstract class JsonAbstract {
   Map<String, dynamic> toJson();
-
-  JsonAbstract.fromJson(Map<String, dynamic> json);
 }

lib/src/common/utils/json_abstract.dart

@@ -0,0 +1,53 @@
+import 'package:tekartik_app_flutter_sembast/setup/sembast_flutter.dart';
+
+import '../../constants/enums/generic_entity.dart';
+import '../app_utils.dart';
+import '../custom_types.dart';
+
+abstract class GenericRepository<S, T extends GenericEntity<S>> {
+  final Database database;
+  final StoreRef<S, JsonObject> store;
+  final GenericFromJson<T> fromJson;
+
+  GenericRepository(this.database, String _storeName, this.fromJson)
+      : store = StoreRef(_storeName);
+
+  Stream<List<T>> watchAll() =>
+      store.query().onSnapshots(database).map(AppUtils.convertSnaps(fromJson));
+
+  Stream<T?> watchById(S id) =>
+      store.record(id).onSnapshot(database).map(AppUtils.convertSnap(fromJson));
+
+  Future<int> getCount([DatabaseClient? dbClient]) =>
+      wrap(dbClient, (txn) => store.count(txn));
+
+  Future<T?> getById(S id, [DatabaseClient? dbClient]) async {
+    return wrap(
+      dbClient,
+      (txn) => store.record(id).get(txn).then(AppUtils.convertGet(fromJson)),
+    );
+  }
+
+  Future<void> save(T entity, [DatabaseClient? dbClient]) => wrap(
+        dbClient,
+        (txn) => store.record(entity.id).put(txn, entity.toJson()),
+      );
+
+  Future<void> saveAll(List<T> entities, [DatabaseClient? dbClient]) async {
+    if (entities.isEmpty) return;
+    return wrap(
+      dbClient,
+      (txn) => Future.wait([for (final entry in entities) save(entry, txn)]),
+    );
+  }
+
+  Future<U> wrap<U>(
+    DatabaseClient? dbClient,
+    Future<U> Function(DatabaseClient) call,
+  ) async {
+    if (dbClient == null) {
+      return await database.transaction((txn) => call(txn));
+    }
+    return await call(dbClient);
+  }
+}

lib/src/common/utils/repository/generic_repository.dart

@@ -22,15 +22,15 @@ Stream<LinkedHashMap<int, List<DayBox>>?> dayBoxMap(Ref ref) =>
 
 @riverpod
 Stream<DayBox?> dayBox(Ref ref, int boxNumber) =>
-    ref.watch(dayBoxRepositoryProvider).getDayBoxByNumber(boxNumber);
+    ref.watch(dayBoxRepositoryProvider).watchById(boxNumber);
 
 @riverpod
 Stream<WeekBox?> weekBox(Ref ref, int boxNumber) =>
-    ref.watch(weekBoxRepositoryProvider).getWeekBoxByWeekNumber(boxNumber);
+    ref.watch(weekBoxRepositoryProvider).watchById(boxNumber);
 
 @riverpod
 Stream<YearBox?> yearBox(Ref ref, int boxNumber) =>
-    ref.watch(yearBoxRepositoryProvider).getYearBoxByYearNumber(boxNumber);
+    ref.watch(yearBoxRepositoryProvider).watchById(boxNumber);
 @riverpod
 Stream<LinkedHashMap<int, List<WeekBox>>?> weekBoxMap(Ref ref) =>
     ref.watch(weekBoxRepositoryProvider).getWeekBoxListGroupByYearNumber();

lib/src/features/home/controller/home_controller.dart

@@ -7,9 +7,9 @@
 import 'package:flutter/material.dart';
 import 'package:freezed_annotation/freezed_annotation.dart';
 
+import '../../../common/constants/enums/generic_entity.dart';
 import '../../../common/utils/converter/epoch_date_time_converter.dart';
 import '../../../common/utils/extensions/custom_extensions.dart';
-import '../../../common/utils/json_abstract.dart';
 import '../enums/box_status.dart';
 
 part 'box.freezed.dart';
@@ -42,7 +42,7 @@ enum YearBoxFields {
 }
 
 sealed class Box {
-  int get boxNumber;
+  int get id;
   BoxStatus get boxStatus;
   bool get hasLandMark;
   String get chatGroupId;
@@ -51,10 +51,10 @@ sealed class Box {
 }
 
 @freezed
-class DayBox with _$DayBox implements JsonAbstract, Box {
+class DayBox with _$DayBox implements GenericEntity<int>, Box {
   const DayBox._();
   factory DayBox({
-    required int boxNumber,
+    @JsonKey(name: 'boxNumber') required int id,
     @EpochDateTimeConverter() required DateTime date,
     required BoxStatus boxStatus,
     required int weekNumber,
@@ -70,14 +70,14 @@ class DayBox with _$DayBox implements JsonAbstract, Box {
 
   /// For Chat group name
   @override
-  String get chatGroupId => "DAY_$boxNumber";
+  String get chatGroupId => "DAY_$id";
 }
 
 @freezed
-class WeekBox with _$WeekBox implements JsonAbstract, Box {
+class WeekBox with _$WeekBox implements GenericEntity<int>, Box {
   const WeekBox._();
   factory WeekBox({
-    required int boxNumber,
+    @JsonKey(name: 'boxNumber') required int id,
     @EpochDateTimeConverter() required DateTime startDate,
     @EpochDateTimeConverter() required DateTime endDate,
     required BoxStatus boxStatus,
@@ -93,15 +93,15 @@ class WeekBox with _$WeekBox implements JsonAbstract, Box {
 
   /// For Chat group name
   @override
-  String get chatGroupId => "WEEK_$boxNumber";
+  String get chatGroupId => "WEEK_$id";
 }
 
 @freezed
-class YearBox with _$YearBox implements JsonAbstract, Box {
+class YearBox with _$YearBox implements GenericEntity<int>, Box {
   const YearBox._();
 
   factory YearBox({
-    required int boxNumber,
+    @JsonKey(name: 'boxNumber') required int id,
     @EpochDateTimeConverter() required DateTime startDate,
     @EpochDateTimeConverter() required DateTime endDate,
     required BoxStatus boxStatus,
@@ -116,5 +116,5 @@ class YearBox with _$YearBox implements JsonAbstract, Box {
 
   /// For Chat group name
   @override
-  String get chatGroupId => "YEAR_$boxNumber";
+  String get chatGroupId => "YEAR_$id";
 }