Add models and sdk services example

lib/sdk.dart

@@ -0,0 +1 @@
+export './sdk/client_sdk.dart';

lib/sdk/ClientSDK.dart

@@ -1,20 +0,0 @@
-import 'package:sample_dart_dsdk/sdk/services/CategoryService.dart';
-import 'package:sample_dart_dsdk/sdk/services/ProductService.dart';
-
-class ClientSDK {
-  static var _instance;
-
-  static ClientSDK getInstance() {
-    if (_instance == null) {
-      ClientSDK();
-    }
-
-    return _instance;
-  }
-
-  ProductService getProductService() {
-    return ProductService();
-  }
-
-  CategoryService getCategoryService() => CategoryService();
-}

lib/sdk/client_sdk.dart

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+import 'package:sample_sdk/sdk/services/category.dart';
+import 'package:sample_sdk/sdk/services/product.dart';
+
+class ClientSDK {
+  static var _instance;
+
+  static ClientSDK getInstance() {
+    if (_instance == null) {
+      ClientSDK();
+    }
+
+    return _instance;
+  }
+
+  ProductService productService = ProductService();
+
+  CategoryService categoryService = CategoryService();
+
+  ClientSDK() {
+    _instance = this;
+  }
+
+  void dispose() {
+    _instance = null;
+  }
+
+}

lib/sdk/models/CategoryModel.dart

@@ -1,6 +0,0 @@
-class Category {
-  int id;
-  String name;
-
-  Category(this.id, this.name);
-}

lib/sdk/models/ProductModel.dart

@@ -1,20 +0,0 @@
-class Product {
-  int id;
-  String name;
-  double price;
-
-  Product(this.id, this.name, this.price);
-
-  static Product fromJson(dynamic json) => Product(
-        json['id'],
-        json['name'],
-        json['price'],
-      );
-}
-
-class ProductRequest {
-  String name;
-  double price;
-
-  ProductRequest(this.name, this.price);
-}

lib/sdk/models/base.dart

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+import 'dart:convert';
+
+abstract class BaseModel<T> {
+  BaseModel();
+
+  Map<String, dynamic> toMap();
+
+  T fromMap(Map<String, dynamic> map);
+
+  T fromJson(String json);
+
+  @override
+  String toString() {
+    return toMap().toString();
+  }
+
+  @override
+  bool operator ==(Object other) {
+    if (identical(this, other)) return true;
+
+    return other is BaseModel && other.toMap() == toMap();
+  }
+
+  @override
+  int get hashCode => toMap().hashCode;
+
+  String toJson() => encode(toMap());
+
+  dynamic decode(String json) => jsonDecode(json);
+  String encode(dynamic json) => jsonEncode(json);
+}

lib/sdk/models/category.dart

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+import 'package:sample_sdk/sdk/models/base.dart';
+
+class Category extends BaseModel<Category> {
+  int? id;
+  String? name;
+  Category? parent;
+
+  Category({this.id, this.name, this.parent});
+
+  @override
+  Category fromMap(Map<String, dynamic> map) {
+    id = map['id'];
+    name = map['name'];
+    parent = Category().fromJson(map['parent']);
+
+    return this;
+  }
+
+  @override
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id,
+      'name': name,
+      'parent': parent?.toMap(),
+    };
+  }
+
+  @override
+  Category fromJson(String json) {
+    return fromMap(decode(json));
+  }
+
+  static Category fromJsonString(dynamic json) => Category().fromJson(json);
+}

lib/sdk/models/product.dart

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+import 'package:sample_sdk/sdk/models/base.dart';
+import 'package:sample_sdk/sdk/models/category.dart';
+
+class Product extends BaseModel<Product> {
+  int? id;
+  String? name;
+  double? price;
+  Category? category;
+
+  Product({this.id, this.name, this.price, this.category});
+
+  @override
+  Product fromMap(Map<String, dynamic> map) {
+    id = map['id'];
+    name = map['name'];
+    price = map['price'];
+    category = Category().fromJson(map['category']);
+
+    return this;
+  }
+
+  @override
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id,
+      'name': name,
+      'price': price,
+      'category': category?.toMap(),
+    };
+  }
+
+  @override
+  Product fromJson(String json) {
+    return fromMap(decode(json));
+  }
+
+  static Product fromJsonString(String json) => Product().fromJson(json);
+}

lib/sdk/services/CategoryService.dart

@@ -1,7 +0,0 @@
-import 'package:sample_dart_dsdk/sdk/models/CategoryModel.dart';
-
-class CategoryService {
-  List<Category> getAll() {
-    return List.empty();
-  }
-}

lib/sdk/services/ProductService.dart

@@ -1,15 +0,0 @@
-import 'package:sample_dart_dsdk/sdk/models/ProductModel.dart';
-
-class ProductService {
-  List<Product> getAll() {
-    return List.empty();
-  }
-
-  Product getOne() {
-    return Product.fromJson(null);
-  }
-
-  Product create() {
-    return Product.fromJson(null);
-  }
-}

lib/sdk/services/base.dart

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+abstract class BaseService<T, ID> {
+  Future<List<T>> findAll();
+
+  Future<T> findById(ID id);
+
+  Future<T> create(T entity);
+
+  Future<T> update(T entity);
+
+  Future<void> delete(ID id);
+}

lib/sdk/services/category.dart

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+import 'package:sample_sdk/sdk/models/category.dart';
+import 'package:sample_sdk/sdk/services/base.dart';
+
+class CategoryService extends BaseService<Category, int> {
+  final List<Category> _categories = [
+    Category(id: 1, name: 'Category 1'),
+    Category(id: 2, name: 'Category 2'),
+    Category(id: 3, name: 'Category 3'),
+  ];
+
+  @override
+  Future<Category> create(Category entity) {
+    _categories.add(entity);
+    return Future.value(entity);
+  }
+
+  @override
+  Future<void> delete(int id) {
+    _categories.removeWhere((element) => element.id == id);
+    return Future.value();
+  }
+
+  @override
+  Future<List<Category>> findAll() {
+    return Future.value(_categories);
+  }
+
+  @override
+  Future<Category> findById(int id) {
+    return Future.value(_categories.firstWhere((element) => element.id == id));
+  }
+
+  @override
+  Future<Category> update(Category entity) {
+    final index = _categories.indexWhere((element) => element.id == entity.id);
+    _categories[index] = entity;
+    return Future.value(entity);
+  }
+}

lib/sdk/services/product.dart

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+import 'package:sample_sdk/sdk/models/category.dart';
+import 'package:sample_sdk/sdk/models/product.dart';
+import 'package:sample_sdk/sdk/services/base.dart';
+
+class ProductService extends BaseService<Product, int> {
+  final List<Product> _products = [
+    Product(
+      id: 1,
+      name: 'Product 1',
+      price: 100.0,
+      category: Category(
+        id: 1,
+        name: 'Category 1',
+      ),
+    ),
+    Product(
+      id: 2,
+      name: 'Product 2',
+      price: 200.0,
+      category: Category(
+        id: 2,
+        name: 'Category 2',
+      ),
+    ),
+    Product(
+      id: 3,
+      name: 'Product 3',
+      price: 300.0,
+      category: Category(
+        id: 3,
+        name: 'Category 3',
+      ),
+    ),
+  ];
+
+  @override
+  Future<Product> create(Product entity) {
+    _products.add(entity);
+    return Future.value(entity);
+  }
+
+  @override
+  Future<void> delete(int id) {
+    _products.removeWhere((element) => element.id == id);
+    return Future.value();
+  }
+
+  @override
+  Future<List<Product>> findAll() {
+    return Future.value(_products);
+  }
+
+  @override
+  Future<Product> findById(int id) {
+    return Future.value(_products.firstWhere((element) => element.id == id));
+  }
+
+  @override
+  Future<Product> update(Product entity) {
+    final index = _products.indexWhere((element) => element.id == entity.id);
+    _products[index] = entity;
+    return Future.value(entity);
+  }
+}

lib/test.dart

@@ -1,13 +0,0 @@
-import 'package:sample_dart_dsdk/sdk/ClientSDK.dart';
-
-void main(List<String> args) {
-  var client = ClientSDK.getInstance();
-  var productService = client.getProductService();
-  var products = productService.getAll();
-
-  print(products);
-
-  var categoryService = client.getCategoryService();
-  var categories = categoryService.getAll();
-  print(categories);
-}