fluffychat/lib/utils/url_launcher.dart

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import 'package:adaptive_dialog/adaptive_dialog.dart';
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import 'package:matrix/matrix.dart';
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import 'package:future_loading_dialog/future_loading_dialog.dart';
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import 'package:fluffychat/widgets/matrix.dart';
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import 'package:fluffychat/config/app_config.dart';
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import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';
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import 'package:vrouter/vrouter.dart';
import 'package:punycode/punycode.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
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import 'platform_infos.dart';
import '../pages/user_bottom_sheet.dart';
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class UrlLauncher {
final String url;
final BuildContext context;
const UrlLauncher(this.context, this.url);
void launchUrl() {
if (url.toLowerCase().startsWith(AppConfig.inviteLinkPrefix) ||
{'#', '@', '!', '+', '\$'}.contains(url[0]) ||
url.toLowerCase().startsWith(AppConfig.schemePrefix)) {
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return openMatrixToUrl();
}
final uri = Uri.tryParse(url);
if (uri == null) {
// we can't open this thing
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(L10n.of(context).cantOpenUri(url))));
return;
}
if (!{'https', 'http'}.contains(uri.scheme)) {
// just launch non-https / non-http uris directly
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// we need to transmute geo URIs on desktop and on iOS
if ((!PlatformInfos.isMobile || PlatformInfos.isIOS) &&
uri.scheme == 'geo' &&
uri.path != null) {
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final latlong = uri.path
.split(';')
.first
.split(',')
.map((s) => double.tryParse(s))
.toList();
if (latlong.length == 2 &&
latlong.first != null &&
latlong.last != null) {
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if (PlatformInfos.isIOS) {
// iOS is great at not following standards, so we need to transmute the geo URI
// to an apple maps thingy
// https://developer.apple.com/library/archive/featuredarticles/iPhoneURLScheme_Reference/MapLinks/MapLinks.html
final ll = '${latlong.first},${latlong.last}';
launch('https://maps.apple.com/?q=$ll&sll=$ll');
} else {
// transmute geo URIs on desktop to openstreetmap links, as those usually can't handle
// geo URIs
launch(
'https://www.openstreetmap.org/?mlat=${latlong.first}&mlon=${latlong.last}#map=16/${latlong.first}/${latlong.last}');
}
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return;
}
}
launch(url);
return;
}
if (uri.host == null) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(content: Text(L10n.of(context).cantOpenUri(url))));
return;
}
// okay, we have either an http or an https URI.
// As some platforms have issues with opening unicode URLs, we are going to help
// them out by punycode-encoding them for them ourself.
final newHost = uri.host.split('.').map((hostPartEncoded) {
final hostPart = Uri.decodeComponent(hostPartEncoded);
final hostPartPunycode = punycodeEncode(hostPart);
return hostPartPunycode != hostPart + '-'
? 'xn--$hostPartPunycode'
: hostPart;
}).join('.');
launch(uri.replace(host: newHost).toString());
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}
void openMatrixToUrl() async {
final matrix = Matrix.of(context);
// The identifier might be a matrix.to url and needs escaping. Or, it might have multiple
// identifiers (room id & event id), or it might also have a query part.
// All this needs parsing.
final identityParts = url.parseIdentifierIntoParts() ??
Uri.tryParse(url)?.host?.parseIdentifierIntoParts() ??
Uri.tryParse(url)
?.pathSegments
?.lastWhere((_) => true, orElse: () => null)
?.parseIdentifierIntoParts();
if (identityParts == null) {
return; // no match, nothing to do
}
if (identityParts.primaryIdentifier.sigil == '#' ||
identityParts.primaryIdentifier.sigil == '!') {
// we got a room! Let's open that one
final roomIdOrAlias = identityParts.primaryIdentifier;
final event = identityParts.secondaryIdentifier;
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var room = matrix.client.getRoomByAlias(roomIdOrAlias) ??
matrix.client.getRoomById(roomIdOrAlias);
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var roomId = room?.id;
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// we make the servers a set and later on convert to a list, so that we can easily
// deduplicate servers added via alias lookup and query parameter
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final servers = <String>{};
if (room == null && roomIdOrAlias.sigil == '#') {
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// we were unable to find the room locally...so resolve it
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final response = await showFutureLoadingDialog(
context: context,
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future: () => matrix.client.getRoomIdByAlias(roomIdOrAlias),
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);
if (response.error != null) {
return; // nothing to do, the alias doesn't exist
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}
roomId = response.result.roomId;
servers.addAll(response.result.servers);
room = matrix.client.getRoomById(roomId);
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}
if (identityParts.via != null) {
servers.addAll(identityParts.via);
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}
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if (room != null) {
// we have the room, so....just open it
if (event != null) {
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VRouter.of(context).toSegments(['rooms', room.id],
queryParameters: {'event': event});
} else {
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VRouter.of(context).toSegments(['rooms', room.id]);
}
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return;
}
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if (roomIdOrAlias.sigil == '!') {
if (await showOkCancelAlertDialog(
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useRootNavigator: false,
context: context,
title: 'Join room $roomIdOrAlias',
) ==
OkCancelResult.ok) {
roomId = roomIdOrAlias;
final response = await showFutureLoadingDialog(
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context: context,
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future: () => matrix.client.joinRoom(
roomIdOrAlias,
serverName: servers.isNotEmpty ? servers.toList() : null,
),
);
if (response.error != null) return;
// wait for two seconds so that it probably came down /sync
await showFutureLoadingDialog(
context: context,
future: () => Future.delayed(const Duration(seconds: 2)));
if (event != null) {
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VRouter.of(context).toSegments(['rooms', response.result],
queryParameters: {'event': event});
} else {
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VRouter.of(context).toSegments(['rooms', response.result]);
}
}
} else {
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VRouter.of(context).to('/search', queryParameters: {
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if (roomIdOrAlias != null) 'query': roomIdOrAlias
});
}
} else if (identityParts.primaryIdentifier.sigil == '@') {
final profile = await matrix.client
.getProfileFromUserId(identityParts.primaryIdentifier);
await showModalBottomSheet(
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context: context,
builder: (c) => UserBottomSheet(
profile: profile,
outerContext: context,
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),
);
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}
}
}