ok_http: Add BaseClient Implementation and make asynchronous requests.

.github/workflows/okhttp.yaml

@@ -45,3 +45,14 @@ jobs:
       - name: Analyze code
         if: always() && steps.install.outcome == 'success'
         run: flutter analyze --fatal-infos
+      - name: Run tests
+        uses: reactivecircus/android-emulator-runner@6b0df4b0efb23bb0ec63d881db79aefbc976e4b2
+        if: always() && steps.install.outcome == 'success'
+        with:
+          # api-level/minSdkVersion should be help in sync in:
+          # - .github/workflows/ok.yml
+          # - pkgs/ok_http/android/build.gradle
+          # - pkgs/ok_http/example/android/app/build.gradle
+          api-level: 21
+          arch: x86_64
+          script: cd pkgs/ok_http/example && flutter test --timeout=120s integration_test/

pkgs/ok_http/.gitignore

@@ -27,3 +27,6 @@ migrate_working_dir/
 **/doc/api/
 .dart_tool/
 build/
+
+# Ignore the JAR files required to generate JNI Bindings
+jar/

pkgs/ok_http/CHANGELOG.md

@@ -1,3 +1,4 @@
 ## 0.1.0-wip
 
-* Initial release.
+- Implementation of [`BaseClient`](https://pub.dev/documentation/http/latest/http/BaseClient-class.html) and `send()` method using [`enqueue()` API](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-call/enqueue.html)
+- `ok_http` can now send asynchronous requests

pkgs/ok_http/android/build.gradle

@@ -39,21 +39,6 @@ android {
     // (e.g. ndkVersion "23.1.7779620")
     ndkVersion = android.ndkVersion
 
-    // Invoke the shared CMake build with the Android Gradle Plugin.
-    externalNativeBuild {
-        cmake {
-            path = "../src/CMakeLists.txt"
-
-            // The default CMake version for the Android Gradle Plugin is 3.10.2.
-            // https://developer.android.com/studio/projects/install-ndk#vanilla_cmake
-            //
-            // The Flutter tooling requires that developers have CMake 3.10 or later
-            // installed. You should not increase this version, as doing so will cause
-            // the plugin to fail to compile for some customers of the plugin.
-            // version "3.10.2"
-        }
-    }
-
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_1_8
         targetCompatibility = JavaVersion.VERSION_1_8
@@ -63,3 +48,7 @@ android {
         minSdk = 21
     }
 }
+
+dependencies {
+    implementation('com.squareup.okhttp3:okhttp:4.12.0')
+}

pkgs/ok_http/example/android/app/src/main/AndroidManifest.xml

@@ -2,7 +2,8 @@
     <application
         android:label="ok_http_example"
         android:name="${applicationName}"
-        android:icon="@mipmap/ic_launcher">
+        android:icon="@mipmap/ic_launcher"
+        android:usesCleartextTraffic="true">
         <activity
             android:name=".MainActivity"
             android:exported="true"

pkgs/ok_http/example/android/settings.gradle

@@ -19,7 +19,7 @@ pluginManagement {
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
     id "com.android.application" version "7.3.0" apply false
-    id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+    id "org.jetbrains.kotlin.android" version "1.9.23" apply false
 }
 
 include ":app"

pkgs/ok_http/example/integration_test/client_test.dart

@@ -0,0 +1,27 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:http_client_conformance_tests/http_client_conformance_tests.dart';
+import 'package:integration_test/integration_test.dart';
+import 'package:ok_http/ok_http.dart';
+import 'package:test/test.dart';
+
+void main() async {
+  IntegrationTestWidgetsFlutterBinding.ensureInitialized();
+
+  await testConformance();
+}
+
+Future<void> testConformance() async {
+  group('ok_http client', () {
+    testAll(
+      OkHttpClient.new,
+      canStreamRequestBody: false,
+      canStreamResponseBody: false,
+      preservesMethodCase: true,
+      canSendCookieHeaders: true,
+      canReceiveSetCookieHeaders: true,
+    );
+  });
+}

pkgs/ok_http/example/lib/book.dart

@@ -0,0 +1,32 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+class Book {
+  String title;
+  String description;
+  Uri imageUrl;
+
+  Book(this.title, this.description, this.imageUrl);
+
+  static List<Book> listFromJson(Map<dynamic, dynamic> json) {
+    final books = <Book>[];
+
+    if (json['items'] case final List<dynamic> items) {
+      for (final item in items) {
+        if (item case {'volumeInfo': final Map<dynamic, dynamic> volumeInfo}) {
+          if (volumeInfo
+              case {
+                'title': final String title,
+                'description': final String description,
+                'imageLinks': {'smallThumbnail': final String thumbnail}
+              }) {
+            books.add(Book(title, description, Uri.parse(thumbnail)));
+          }
+        }
+      }
+    }
+
+    return books;
+  }
+}

pkgs/ok_http/example/lib/main.dart

@@ -1,69 +1,149 @@
+// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:convert';
+import 'dart:io';
+
 import 'package:flutter/material.dart';
-import 'dart:async';
+import 'package:http/http.dart';
+import 'package:http/io_client.dart';
+import 'package:http_image_provider/http_image_provider.dart';
+import 'package:ok_http/ok_http.dart';
+import 'package:provider/provider.dart';
+
+import 'book.dart';
 
 void main() {
-  runApp(const MyApp());
+  final Client httpClient;
+  if (Platform.isAndroid) {
+    httpClient = OkHttpClient();
+  } else {
+    httpClient = IOClient(HttpClient()..userAgent = 'Book Agent');
+  }
+
+  runApp(Provider<Client>(
+      create: (_) => httpClient,
+      child: const BookSearchApp(),
+      dispose: (_, client) => client.close()));
 }
 
-class MyApp extends StatefulWidget {
-  const MyApp({super.key});
+class BookSearchApp extends StatelessWidget {
+  const BookSearchApp({super.key});
 
   @override
-  State<MyApp> createState() => _MyAppState();
+  Widget build(BuildContext context) => const MaterialApp(
+        // Remove the debug banner.
+        debugShowCheckedModeBanner: false,
+        title: 'Book Search',
+        home: HomePage(),
+      );
 }
 
-class _MyAppState extends State<MyApp> {
-  late int sumResult;
-  late Future<int> sumAsyncResult;
+class HomePage extends StatefulWidget {
+  const HomePage({super.key});
+
+  @override
+  State<HomePage> createState() => _HomePageState();
+}
+
+class _HomePageState extends State<HomePage> {
+  List<Book>? _books;
+  String? _lastQuery;
+  late Client _client;
 
   @override
   void initState() {
     super.initState();
+    _client = context.read<Client>();
+  }
+
+  // Get the list of books matching `query`.
+  // The `get` call will automatically use the `client` configured in `main`.
+  Future<List<Book>> _findMatchingBooks(String query) async {
+    final response = await _client.get(
+      Uri.https(
+        'www.googleapis.com',
+        '/books/v1/volumes',
+        {'q': query, 'maxResults': '20', 'printType': 'books'},
+      ),
+    );
+
+    final json = jsonDecode(utf8.decode(response.bodyBytes)) as Map;
+    return Book.listFromJson(json);
+  }
+
+  void _runSearch(String query) async {
+    _lastQuery = query;
+    if (query.isEmpty) {
+      setState(() {
+        _books = null;
+      });
+      return;
+    }
+
+    final books = await _findMatchingBooks(query);
+    // Avoid the situation where a slow-running query finishes late and
+    // replaces newer search results.
+    if (query != _lastQuery) return;
+    setState(() {
+      _books = books;
+    });
   }
 
   @override
   Widget build(BuildContext context) {
-    const textStyle = TextStyle(fontSize: 25);
-    const spacerSmall = SizedBox(height: 10);
-    return MaterialApp(
-      home: Scaffold(
-        appBar: AppBar(
-          title: const Text('Native Packages'),
-        ),
-        body: SingleChildScrollView(
-          child: Container(
-            padding: const EdgeInsets.all(10),
-            child: Column(
-              children: [
-                const Text(
-                  '',
-                  style: textStyle,
-                  textAlign: TextAlign.center,
-                ),
-                spacerSmall,
-                Text(
-                  'sum(1, 2) = $sumResult',
-                  style: textStyle,
-                  textAlign: TextAlign.center,
-                ),
-                spacerSmall,
-                FutureBuilder<int>(
-                  future: sumAsyncResult,
-                  builder: (BuildContext context, AsyncSnapshot<int> value) {
-                    final displayValue =
-                        (value.hasData) ? value.data : 'loading';
-                    return Text(
-                      'await sumAsync(3, 4) = $displayValue',
-                      style: textStyle,
-                      textAlign: TextAlign.center,
-                    );
-                  },
-                ),
-              ],
+    final searchResult = _books == null
+        ? const Text('Please enter a query', style: TextStyle(fontSize: 24))
+        : _books!.isNotEmpty
+            ? BookList(_books!)
+            : const Text('No results found', style: TextStyle(fontSize: 24));
+
+    return Scaffold(
+      appBar: AppBar(title: const Text('Book Search')),
+      body: Padding(
+        padding: const EdgeInsets.all(10),
+        child: Column(
+          children: [
+            const SizedBox(height: 20),
+            TextField(
+              onChanged: _runSearch,
+              decoration: const InputDecoration(
+                labelText: 'Search',
+                suffixIcon: Icon(Icons.search),
+              ),
             ),
-          ),
+            const SizedBox(height: 20),
+            Expanded(child: searchResult),
+          ],
         ),
       ),
     );
   }
 }
+
+class BookList extends StatefulWidget {
+  final List<Book> books;
+  const BookList(this.books, {super.key});
+
+  @override
+  State<BookList> createState() => _BookListState();
+}
+
+class _BookListState extends State<BookList> {
+  @override
+  Widget build(BuildContext context) => ListView.builder(
+        itemCount: widget.books.length,
+        itemBuilder: (context, index) => Card(
+          key: ValueKey(widget.books[index].title),
+          child: ListTile(
+            leading: Image(
+                image: HttpImage(
+                    widget.books[index].imageUrl.replace(scheme: 'https'),
+                    client: context.read<Client>())),
+            title: Text(widget.books[index].title),
+            subtitle: Text(widget.books[index].description),
+          ),
+        ),
+      );
+}