saving refactorings

lib/db/poke_storage_service.dart

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+import 'package:tensordex_mobile/db/tables/poke_db.dart';
+
+abstract class PokeStorageService {
+
+  Future<void> savePoke(Poke user);
+
+  Future<Poke> getPoke(String pokeId);
+
+  void addNonExistantPokes(List<Poke> pokes);
+
+  void loadDefaultPokes();
+
+  void stop();
+}

lib/db/poke_storage_service_impl.dart

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+import 'dart:convert';
+import 'package:flutter/services.dart';
+import 'package:hive/hive.dart';
+import 'package:tensordex_mobile/db/tables/poke_db.dart';
+import 'package:tensordex_mobile/db/poke_storage_service.dart';
+
+import 'package:tensordex_mobile/hive.dart';
+
+import '../utils/logger.dart';
+
+/// Implementation of StorageService using Hive Key-Value DB
+class PokeStorageServiceImpl implements PokeStorageService {
+  PokeStorageServiceImpl();
+
+  @override
+  Future savePoke(Poke poke) async {
+    final pokeBox = await Hive.openBox(pokeBoxName);
+    await pokeBox.put(poke.id, poke);
+  }
+
+  @override
+  Future<Poke> getPoke(String id) async {
+    final pokeBox = await Hive.openBox(pokeBoxName);
+    final poke = await pokeBox.get(id);
+    return poke;
+  }
+
+  @override
+  Future addNonExistantPokes(List<Poke> pokes) async {
+    final pokeBox = await Hive.openBox(pokeBoxName);
+
+    Future.forEach(pokes, (Poke poke) async {
+      if (!pokeBox.containsKey(poke.id)) {
+        await pokeBox.put(poke.id, poke);
+      }
+    });
+  }
+
+  @override
+  Future<void> loadDefaultPokes() async {
+    var allPokeJson = await _loadPokeJson();
+    List<Poke> pokes = [];
+    for (var pokeJson in allPokeJson) {
+      pokes.add(Poke(
+          id: pokeJson['id'].toString(),
+          name: pokeJson['name']['english'].toString(),
+          seen: false,
+          images: []));
+    }
+    await addNonExistantPokes(pokes);
+  }
+
+  Future<List<dynamic>> _loadPokeJson() async {
+    return await jsonDecode(await rootBundle.loadString('assets/pokemon.json'));
+  }
+
+  @override
+  void stop() {
+    Hive.close();
+  }
+}

lib/db/tables/poke_db.dart

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+import 'package:hive/hive.dart';
+
+part 'poke_db.g.dart';
+
+@HiveType(typeId: 1)
+class Poke {
+  Poke(
+      {required this.id,
+      required this.name,
+      required this.seen,
+      required this.images});
+
+  @HiveField(0)
+  String id;
+
+  @HiveField(1)
+  String name;
+
+  @HiveField(2)
+  bool seen;
+
+  @HiveField(3)
+  List<String> images;
+
+  @override
+  String toString() {
+    return '$id: $name | seen?:$seen | images: $images';
+  }
+}

lib/db/tables/poke_db.g.dart

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+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'poke_db.dart';
+
+// **************************************************************************
+// TypeAdapterGenerator
+// **************************************************************************
+
+class PokeAdapter extends TypeAdapter<Poke> {
+  @override
+  final int typeId = 1;
+
+  @override
+  Poke read(BinaryReader reader) {
+    final numOfFields = reader.readByte();
+    final fields = <int, dynamic>{
+      for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
+    };
+    return Poke(
+      id: fields[0] as String,
+      name: fields[1] as String,
+      seen: fields[2] as bool,
+      images: (fields[3] as List).cast<String>(),
+    );
+  }
+
+  @override
+  void write(BinaryWriter writer, Poke obj) {
+    writer
+      ..writeByte(4)
+      ..writeByte(0)
+      ..write(obj.id)
+      ..writeByte(1)
+      ..write(obj.name)
+      ..writeByte(2)
+      ..write(obj.seen)
+      ..writeByte(3)
+      ..write(obj.images);
+  }
+
+  @override
+  int get hashCode => typeId.hashCode;
+
+  @override
+  bool operator ==(Object other) =>
+      identical(this, other) ||
+      other is PokeAdapter &&
+          runtimeType == other.runtimeType &&
+          typeId == other.typeId;
+}