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Compass app (#2446)
This commit is contained in:
Eric Windmill
GitHub
210
compass_app/app/lib/data/services/api/api_client.dart
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210
compass_app/app/lib/data/services/api/api_client.dart
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// Copyright 2024 The Flutter team. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:convert';
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import 'dart:io';
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import '../../../domain/models/activity/activity.dart';
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import '../../../domain/models/continent/continent.dart';
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import '../../../domain/models/destination/destination.dart';
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import '../../../utils/result.dart';
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import 'model/booking/booking_api_model.dart';
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import 'model/user/user_api_model.dart';
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/// Adds the `Authentication` header to a header configuration.
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typedef AuthHeaderProvider = String? Function();
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class ApiClient {
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ApiClient({
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String? host,
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int? port,
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HttpClient Function()? clientFactory,
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}) : _host = host ?? 'localhost',
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_port = port ?? 8080,
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_clientFactory = clientFactory ?? (() => HttpClient());
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final String _host;
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final int _port;
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final HttpClient Function() _clientFactory;
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AuthHeaderProvider? _authHeaderProvider;
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set authHeaderProvider(AuthHeaderProvider authHeaderProvider) {
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_authHeaderProvider = authHeaderProvider;
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}
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Future<void> _authHeader(HttpHeaders headers) async {
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final header = _authHeaderProvider?.call();
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if (header != null) {
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headers.add(HttpHeaders.authorizationHeader, header);
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}
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}
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Future<Result<List<Continent>>> getContinents() async {
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final client = _clientFactory();
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try {
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final request = await client.get(_host, _port, '/continent');
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await _authHeader(request.headers);
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final response = await request.close();
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if (response.statusCode == 200) {
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final stringData = await response.transform(utf8.decoder).join();
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final json = jsonDecode(stringData) as List<dynamic>;
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return Result.ok(
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json.map((element) => Continent.fromJson(element)).toList());
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<List<Destination>>> getDestinations() async {
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final client = _clientFactory();
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try {
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final request = await client.get(_host, _port, '/destination');
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await _authHeader(request.headers);
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final response = await request.close();
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if (response.statusCode == 200) {
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final stringData = await response.transform(utf8.decoder).join();
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final json = jsonDecode(stringData) as List<dynamic>;
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return Result.ok(
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json.map((element) => Destination.fromJson(element)).toList());
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<List<Activity>>> getActivityByDestination(String ref) async {
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final client = _clientFactory();
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try {
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final request =
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await client.get(_host, _port, '/destination/$ref/activity');
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await _authHeader(request.headers);
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final response = await request.close();
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if (response.statusCode == 200) {
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final stringData = await response.transform(utf8.decoder).join();
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final json = jsonDecode(stringData) as List<dynamic>;
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final activities =
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json.map((element) => Activity.fromJson(element)).toList();
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return Result.ok(activities);
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<List<BookingApiModel>>> getBookings() async {
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final client = _clientFactory();
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try {
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final request = await client.get(_host, _port, '/booking');
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await _authHeader(request.headers);
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final response = await request.close();
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if (response.statusCode == 200) {
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final stringData = await response.transform(utf8.decoder).join();
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final json = jsonDecode(stringData) as List<dynamic>;
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final bookings =
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json.map((element) => BookingApiModel.fromJson(element)).toList();
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return Result.ok(bookings);
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<BookingApiModel>> getBooking(int id) async {
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final client = _clientFactory();
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try {
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final request = await client.get(_host, _port, '/booking/$id');
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await _authHeader(request.headers);
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final response = await request.close();
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if (response.statusCode == 200) {
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final stringData = await response.transform(utf8.decoder).join();
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final booking = BookingApiModel.fromJson(jsonDecode(stringData));
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return Result.ok(booking);
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<BookingApiModel>> postBooking(BookingApiModel booking) async {
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final client = _clientFactory();
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try {
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final request = await client.post(_host, _port, '/booking');
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await _authHeader(request.headers);
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request.write(jsonEncode(booking));
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final response = await request.close();
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if (response.statusCode == 201) {
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final stringData = await response.transform(utf8.decoder).join();
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final booking = BookingApiModel.fromJson(jsonDecode(stringData));
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return Result.ok(booking);
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<UserApiModel>> getUser() async {
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final client = _clientFactory();
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try {
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final request = await client.get(_host, _port, '/user');
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await _authHeader(request.headers);
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final response = await request.close();
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if (response.statusCode == 200) {
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final stringData = await response.transform(utf8.decoder).join();
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final user = UserApiModel.fromJson(jsonDecode(stringData));
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return Result.ok(user);
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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Future<Result<void>> deleteBooking(int id) async {
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final client = _clientFactory();
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try {
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final request = await client.delete(_host, _port, '/booking/$id');
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await _authHeader(request.headers);
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final response = await request.close();
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// Response 204 "No Content", delete was successful
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if (response.statusCode == 204) {
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return Result.ok(null);
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} else {
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return Result.error(const HttpException("Invalid response"));
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}
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} on Exception catch (error) {
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return Result.error(error);
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} finally {
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client.close();
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}
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}
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}
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