course-work/lib/logic/server_api.dart

import 'dart:async';
import 'dart:convert';
import 'dart:io';

import 'package:dio/adapter.dart';
import 'package:dio/dio.dart';

import 'package:selfprivacy/models/courier.dart';
import 'package:selfprivacy/models/order.dart';
import 'package:selfprivacy/models/item.dart';

class ApiResponse<D> {
  ApiResponse({
    required this.statusCode,
    required this.data,
    this.errorMessage,
  });
  final int statusCode;
  final String? errorMessage;
  final D data;

  bool get isSuccess => statusCode >= 200 && statusCode < 300;
}

class ServerApi {
  Future<Dio> getClient() async {
    final Dio dio = Dio(await options);
    (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
        (final HttpClient client) {
      client.badCertificateCallback =
          (final X509Certificate cert, final String host, final int port) =>
      true;
      return client;
    };

    dio.interceptors.add(
      InterceptorsWrapper(
        onError: (final DioError e, final ErrorInterceptorHandler handler) {
          print(e.requestOptions.path);
          print(e.requestOptions.data);

          print(e.message);
          print(e.response);

          return handler.next(e);
        },
      ),
    );
    return dio;
  }

  BaseOptions get options =>
      BaseOptions(
        baseUrl: 'http://10.100.0.6:8888/api/v1',
        connectTimeout: 10000,
        receiveTimeout: 10000,
      );

  ValidateStatus? validateStatus;

  void close(final Dio client) {
    client.close();
    validateStatus = null;
  }

  Future<ApiResponse<List<Item>>> getItems() async {
    final Dio client = await getClient();
    final Response response = await client.get('/items');
    final List<Item> items = (response.data as List)
        .map((final dynamic e) => Item.fromJson(e as Map<String, dynamic>))
        .toList();
    return ApiResponse<List<Item>>(
      statusCode: response.statusCode ?? 0,
      data: items,
    );
  }

  // Create an item
  Future<ApiResponse<Item>> createItem(final Item item) async {
    final Dio client = await getClient();
    final Response response = await client.post('/items', data: item.toJson(),);
    final Item createdItem = Item.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Item>(
      statusCode: response.statusCode ?? 0,
      data: createdItem,
    );
  }

  // Update an item
  Future<ApiResponse<Item>> updateItem(final Item item) async {
    final Dio client = await getClient();
    final Response response = await client.put('/items/${item.id}', data: {
      'title': item.title,
      'description': item.description,
      'price': item.price,
    },);
    final Item updatedItem = Item.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Item>(
      statusCode: response.statusCode ?? 0,
      data: updatedItem,
    );
  }

  // Delete an item
  Future<ApiResponse<Item>> deleteItem(final Item item) async {
    final Dio client = await getClient();
    final Response response = await client.delete('/items/${item.id}');
    final Item deletedItem = Item.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Item>(
      statusCode: response.statusCode ?? 0,
      data: deletedItem,
    );
  }

  // Get a single item
  Future<ApiResponse<Item>> getItem(final int id) async {
    final Dio client = await getClient();
    final Response response = await client.get('/items/$id');
    final Item item = Item.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Item>(
      statusCode: response.statusCode ?? 0,
      data: item,
    );
  }

  // Get all couriers
  Future<ApiResponse<List<Courier>>> getCouriers() async {
    final Dio client = await getClient();
    final Response response = await client.get('/couriers');
    final List<Courier> couriers = (response.data as List)
        .map((final dynamic e) => Courier.fromJson(e as Map<String, dynamic>))
        .toList();
    return ApiResponse<List<Courier>>(
      statusCode: response.statusCode ?? 0,
      data: couriers,
    );
  }

  // Add a courier
  Future<ApiResponse<Courier>> addCourier(final Courier courier) async {
    final Dio client = await getClient();
    final Response response = await client.post('/couriers', data: courier.toJson(),);
    final Courier createdCourier = Courier.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Courier>(
      statusCode: response.statusCode ?? 0,
      data: createdCourier,
    );
  }

  // Update a courier
  Future<ApiResponse<Courier>> updateCourier(final Courier courier) async {
    final Dio client = await getClient();
    final Response response = await client.put('/couriers/${courier.id}', data: courier.toJson(),);
    final Courier updatedCourier = Courier.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Courier>(
      statusCode: response.statusCode ?? 0,
      data: updatedCourier,
    );
  }

  // Get a single courier
  Future<ApiResponse<Courier>> getCourier(final int id) async {
    final Dio client = await getClient();
    final Response response = await client.get('/couriers/$id');
    final Courier courier = Courier.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Courier>(
      statusCode: response.statusCode ?? 0,
      data: courier,
    );
  }

  // Get all orders
  Future<ApiResponse<List<Order>>> getOrders() async {
    final Dio client = await getClient();
    final Response response = await client.get('/orders');
    final List<Order> orders = (response.data as List)
        .map((final dynamic e) => Order.fromJson(e as Map<String, dynamic>))
        .toList();
    return ApiResponse<List<Order>>(
      statusCode: response.statusCode ?? 0,
      data: orders,
    );
  }

  // Get a single order
  Future<ApiResponse<Order>> getOrder(final int id) async {
    final Dio client = await getClient();
    final Response response = await client.get('/orders/$id');
    final Order order = Order.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Order>(
      statusCode: response.statusCode ?? 0,
      data: order,
    );
  }

  // Create an order
  Future<ApiResponse<Order>> createOrder(final Order order) async {
    final Dio client = await getClient();
    final Response response = await client.post('/orders', data: order.toJsonAsNew());
    final Order createdOrder = Order.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Order>(
      statusCode: response.statusCode ?? 0,
      data: createdOrder,
    );
  }

  // Update an order
  Future<ApiResponse<Order>> updateOrder(final Order order) async {
    final Dio client = await getClient();
    final Response response = await client.put('/orders/${order.id}', data: order.toJson());
    final Order updatedOrder = Order.fromJson(response.data as Map<String, dynamic>);
    return ApiResponse<Order>(
      statusCode: response.statusCode ?? 0,
      data: updatedOrder,
    );
  }
}