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Add rebuild script for tfrs-flutter (#2294)
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‎tfrs-flutter/codelab_rebuild.yaml

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name: tfrs-flutter rebuild script
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steps:
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- name: step0
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steps:
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- name: Remove generated code
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rmdir: step0/frontend
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- name: Create project
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flutter: create frontend --project-name=recommend_products
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- name: Replace README
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path: frontend/README.md
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replace-contents: |
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# Flutter frontend of a recommendation engine demo
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This Flutter app is the frontend to consume the data feed from a backend recommender.
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- name: Strip DEVELOPMENT_TEAM
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strip-lines-containing: DEVELOPMENT_TEAM =
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path: frontend/ios/Runner.xcodeproj/project.pbxproj
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- name: Add deps
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path: frontend
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flutter: pub add http
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- name: Configure analysis_options.yaml
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path: frontend/analysis_options.yaml
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replace-contents: |
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include: ../../../analysis_options.yaml
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analyzer:
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errors:
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unused_import: ignore
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unused_field: ignore
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unused_local_variable: ignore
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- name: Replace lib/main.dart
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path: frontend/lib/main.dart
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replace-contents: |
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import 'dart:io' show Platform;
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import 'package:flutter/foundation.dart' show kIsWeb;
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import 'package:flutter/material.dart';
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void main() => runApp(const RecommenderDemo());
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class RecommenderDemo extends StatefulWidget {
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const RecommenderDemo({super.key});
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@override
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State<RecommenderDemo> createState() => _RecommenderDemoState();
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}
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class _RecommenderDemoState extends State<RecommenderDemo> {
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late List<String> _movieList;
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final TextEditingController _userIDController = TextEditingController();
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late String _server;
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late Future<List<String>> _futureRecommendations;
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@override
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void initState() {
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super.initState();
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_futureRecommendations = Future<List<String>>.value([]);
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}
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Future<List<String>> recommend() async {
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if (!kIsWeb && Platform.isAndroid) {
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// For Android emulator
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_server = '10.0.2.2';
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} else {
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// For iOS emulator, desktop and web platforms
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_server = '127.0.0.1';
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}
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//TODO: add code to send request to the recommendation engine backend
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return [];
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}
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@override
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Widget build(BuildContext context) {
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const title = 'Flutter Movie Recommendation Demo';
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return MaterialApp(
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title: title,
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theme: ThemeData.light(),
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home: Scaffold(
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appBar: AppBar(title: const Text(title)),
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body: Center(
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child: Container(
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padding: const EdgeInsets.fromLTRB(20, 0, 20, 0),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: [
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceEvenly,
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children: [
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Expanded(
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child: TextField(
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controller: _userIDController,
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decoration: const InputDecoration(
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border: UnderlineInputBorder(),
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hintText: 'Enter a user ID here',
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),
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),
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),
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Container(
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margin: const EdgeInsets.only(left: 10.0),
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child: FilledButton(
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style: FilledButton.styleFrom(
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textStyle: const TextStyle(fontSize: 15),
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),
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onPressed: () {
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setState(() {
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_futureRecommendations = recommend();
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});
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},
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child: const Text('Recommend'),
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),
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),
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],
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),
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FutureBuilder<List<String>>(
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future: _futureRecommendations,
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builder: (context, snapshot) {
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if (snapshot.hasData) {
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_movieList = snapshot.data!;
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return ListView.builder(
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scrollDirection: Axis.vertical,
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shrinkWrap: true,
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itemCount: _movieList.length,
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itemBuilder: (context, index) {
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return ListTile(
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leading:
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_movieList.isEmpty ? null : const FlutterLogo(),
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title: Text(_movieList[index]),
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);
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},
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);
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} else if (snapshot.hasError) {
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return Text('${snapshot.error}');
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}
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// By default, show a loading spinner.
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return const CircularProgressIndicator();
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},
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),
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],
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),
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),
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),
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),
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);
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}
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}
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- name: Replace test/widget_test.dart
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path: frontend/test/widget_test.dart
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replace-contents: |
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// This is a basic Flutter widget test.
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//
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// To perform an interaction with a widget in your test, use the WidgetTester
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// utility that Flutter provides. For example, you can send tap and scroll
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// gestures. You can also use WidgetTester to find child widgets in the widget
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// tree, read text, and verify that the values of widget properties are correct.
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import 'package:flutter_test/flutter_test.dart';
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import 'package:recommend_products/main.dart';
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void main() {
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testWidgets('Smoke test', (tester) async {
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// Build our app and trigger a frame.
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await tester.pumpWidget(const RecommenderDemo());
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// Verify that the widgets are there
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expect(find.text('Recommend'), findsOneWidget);
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});
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}
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- name: Patch macos/Runner/DebugProfile.entitlements
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path: frontend/macos/Runner/DebugProfile.entitlements
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patch-u: |
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--- b/frontend/finished/macos/Runner/DebugProfile.entitlements
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+++ a/frontend/finished/macos/Runner/DebugProfile.entitlements
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@@ -8,5 +8,7 @@
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<true/>
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<key>com.apple.security.network.server</key>
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<true/>
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+ <key>com.apple.security.network.client</key>
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+ <true/>
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</dict>
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</plist>
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- name: Patch macos/Runner/Release.entitlements
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path: frontend/macos/Runner/Release.entitlements
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patch-u: |
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--- b/frontend/finished/macos/Runner/Release.entitlements
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+++ a/frontend/finished/macos/Runner/Release.entitlements
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@@ -4,5 +4,7 @@
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<dict>
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<key>com.apple.security.app-sandbox</key>
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<true/>
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+ <key>com.apple.security.network.client</key>
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+ <true/>
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</dict>
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</plist>
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- name: Copy step0
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copydir:
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from: frontend
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to: step0/frontend
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- name: Flutter clean
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path: step0/frontend
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flutter: clean
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- name: step1
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steps:
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- name: Remove generated code
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rmdir: step1/frontend
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- name: Copy step1
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copydir:
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from: frontend
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to: step1/frontend
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- name: Flutter clean
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path: step1/frontend
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flutter: clean
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- name: step2
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steps:
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- name: Remove generated code
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rmdir: step2/frontend
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- name: Copy step2
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copydir:
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from: frontend
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to: step2/frontend
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- name: Flutter clean
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path: step2/frontend
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flutter: clean
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- name: step3
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steps:
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- name: Remove generated code
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rmdir: step3/frontend
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- name: Copy step3
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copydir:
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from: frontend
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to: step3/frontend
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- name: Flutter clean
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path: step3/frontend
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flutter: clean
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- name: step4
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steps:
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- name: Remove generated code
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rmdir: step4/frontend
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- name: Patch analysis_options.yaml
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path: frontend/analysis_options.yaml
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patch-u: |
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--- b/tfagents-flutter/finished/frontend/analysis_options.yaml
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+++ a/tfagents-flutter/finished/frontend/analysis_options.yaml
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@@ -1,7 +1 @@
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include: ../../../analysis_options.yaml
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-
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-analyzer:
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- errors:
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- unused_import: ignore
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- unused_field: ignore
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- unused_local_variable: ignore
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- name: Patch lib/main.dart
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path: frontend/lib/main.dart
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patch-u: |
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--- b/tfrs-flutter/step4/frontend/lib/main.dart
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+++ a/tfrs-flutter/step4/frontend/lib/main.dart
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@@ -1,7 +1,9 @@
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+import 'dart:convert';
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import 'dart:io' show Platform;
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import 'package:flutter/foundation.dart' show kIsWeb;
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import 'package:flutter/material.dart';
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+import 'package:http/http.dart' as http;
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void main() => runApp(const RecommenderDemo());
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@@ -32,10 +34,19 @@ class _RecommenderDemoState extends State<RecommenderDemo> {
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// For iOS emulator, desktop and web platforms
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_server = '127.0.0.1';
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}
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+ final response = await http.post(
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+ Uri.parse('http://$_server:5000/recommend'),
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+ headers: <String, String>{'Content-Type': 'application/json'},
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+ body: jsonEncode(<String, String>{'user_id': _userIDController.text}),
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+ );
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- //TODO: add code to send request to the recommendation engine backend
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-
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- return [];
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+ if (response.statusCode == 200) {
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+ return List<String>.from(
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+ jsonDecode(response.body)['movies'] as Iterable<dynamic>,
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+ );
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+ } else {
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+ throw Exception('Error response');
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+ }
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}
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@override
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- name: Copy step4
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copydir:
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from: frontend
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to: step4/frontend
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- name: Flutter clean
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path: step4/frontend
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flutter: clean
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- name: step5
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steps:
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- name: Remove generated code
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rmdir: step5/frontend
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- name: Copy step5
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copydir:
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from: frontend
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to: step5/frontend
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- name: Flutter clean
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path: step5/frontend
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flutter: clean
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- name: finished
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steps:
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- name: Remove generated code
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rmdir: finished/frontend
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- name: Copy finished
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copydir:
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from: frontend
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to: finished/frontend
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- name: Flutter clean
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path: finished/frontend
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flutter: clean
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- name: Cleanup
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rmdir: frontend

‎tfrs-flutter/finished/frontend/.gitignore

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*.swp
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.DS_Store
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.atom/
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.build/
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.buildlog/
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.history
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.svn/
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.swiftpm/
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migrate_working_dir/
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# IntelliJ related
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*.iml
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.dart_tool/
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.flutter-plugins
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.flutter-plugins-dependencies
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.packages
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.pub-cache/
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.pub/
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/build/
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# Web related
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lib/generated_plugin_registrant.dart
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# Symbolication related
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app.*.symbols
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‎tfrs-flutter/finished/frontend/README.md

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# Flutter frontend of a recommendation engine demo
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This Flutter app is the frontend to consume the data feed from a backend recommender.
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This Flutter app is the frontend to consume the data feed from a backend recommender.

‎tfrs-flutter/finished/frontend/analysis_options.yaml

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include: ../../../analysis_options.yaml
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analyzer:
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linter:
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rules:

‎tfrs-flutter/finished/frontend/android/.gitignore

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/gradlew.bat
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/local.properties
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GeneratedPluginRegistrant.java
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.cxx/
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# Remember to never publicly share your keystore.
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# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
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# See https://flutter.dev/to/reference-keystore
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key.properties
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**/*.keystore
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**/*.jks

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