// Copyright 2020 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file
// Called by https://pub.dartlang.org/packages/peanut to generate example pages
// for hosting.
//
// Requires at least v3.2.0 of `package:peanut`
import 'dart:convert';
import 'dart:io';
import 'package:path/path.dart' as p;
import 'common.dart';
main(List<String> args) async {
final buildDir = args[0];
final fileMap =
(jsonDecode(args[1]) as Map<String, dynamic>).cast<String, String>();
if (fileMap.length < 2) {
throw StateError('We are assuming there is more than one sample!');
}
// This is USUALLY the case – where we have more than one demo
for (var exampleDir in fileMap.values) {
for (var htmlFile in Directory(p.join(buildDir, exampleDir))
.listSync()
.whereType<File>()
.where((f) => p.extension(f.path) == '.html')) {
_updateHtml(htmlFile, buildDir, exampleDir);
}
}
// Move each sample into a subdirectory, 'web'
for (var exampleDir in fileMap.values) {
var oldDirectory = Directory(p.join(buildDir, exampleDir));
Directory(p.join(buildDir, 'web')).createSync();
oldDirectory.renameSync(p.join(buildDir, 'web', exampleDir));
}
// Build the sample index and copy the files into this directory
print('building the sample index...');
await run('samples_index', 'pub', ['get']);
await run('samples_index', 'pub', ['run', 'grinder', 'deploy']);
// Copy the contents of the samples_index/public directory to the build
// directory
logWrapped(ansiMagenta, ' Copying samples_index/public to build directory');
var contents = Directory(p.join('samples_index', 'public')).listSync();
for (var entity in contents) {
var newPath = p.join(buildDir, p.basename(entity.path));
entity.renameSync(newPath);
}
}
void _updateHtml(File htmlFile, String buildDir, String exampleDir) {
final content = htmlFile.readAsStringSync();
final filePath = p.relative(htmlFile.path, from: buildDir);
if (!content.contains(_standardMeta)) {
print('!!! missing standard meta! - $filePath');
}
final newContent = content
.replaceFirst('<head>', '<head>\n$_analytics')
.replaceFirst(_emptyTitle,
'<title>${_prettyName(exampleDir)} - Flutter web sample</title>');
if (newContent == content) {
print('!!! Did not replace contents in $filePath');
} else {
print('Replaced contents in $filePath');
htmlFile.writeAsStringSync(newContent, flush: true);
}
}
final _underscoreOrSlash = RegExp('_|/');
String _prettyName(String input) =>
input.split(_underscoreOrSlash).where((e) => e.isNotEmpty).map((e) {
return e.substring(0, 1).toUpperCase() + e.substring(1);
}).join(' ');
// flutter.github.io
const _analyticsId = 'UA-67589403-8';
const _analytics = '''
<script async src="https://www.googletagmanager.com/gtag/js?id=$_analyticsId"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', '$_analyticsId');
</script>''';
const _emptyTitle = '<title></title>';
const _standardMeta = '''
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
$_emptyTitle''';