forked from Nexus/nexus
49 lines
1.6 KiB
Dart
49 lines
1.6 KiB
Dart
import "dart:convert";
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import "package:flutter_riverpod/flutter_riverpod.dart";
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import "package:http/http.dart";
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import "package:nexus/controllers/client_state_controller.dart";
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import "package:nexus/controllers/header_controller.dart";
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import "package:nexus/helpers/extensions/mxc_to_https.dart";
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import "package:nexus/models/open_graph_data.dart";
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class UrlPreviewController extends AsyncNotifier<OpenGraphData?> {
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final String link;
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UrlPreviewController(this.link);
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@override
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Future<OpenGraphData?> build() async {
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final homeserver = ref.watch(
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ClientStateController.provider.select((value) => value?.homeserverUrl),
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);
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if (homeserver != null && !link.contains("matrix.to")) {
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{
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final response = await get(
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Uri.parse(homeserver)
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.resolve("/_matrix/client/v1/media/preview_url")
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.replace(queryParameters: {"url": link}),
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headers: await ref.watch(HeaderController.provider.future),
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);
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if (response.statusCode == 200) {
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final decodedValue = json.decode(response.body);
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if (decodedValue is! Map<String, dynamic>) return null;
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final mxc = decodedValue["og:image"];
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final image = mxc == null
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? null
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: Uri.tryParse(mxc)?.mxcToHttps(homeserver);
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return OpenGraphData.fromJson(decodedValue).copyWith(imageUrl: image);
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}
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}
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}
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return null;
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}
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static final provider = AsyncNotifierProvider.autoDispose
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.family<UrlPreviewController, OpenGraphData?, String>(
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UrlPreviewController.new,
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);
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}
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