kopia lustrzana https://gitlab.com/mysocialportal/relatica
84 wiersze
2.6 KiB
Dart
84 wiersze
2.6 KiB
Dart
import 'dart:convert';
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import 'package:result_monad/result_monad.dart';
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import '../models/exec_error.dart';
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import '../models/server_data.dart';
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import '../utils/network_utils.dart';
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class FediverseServiceValidator {
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final knownServers = <String, ServerData>{};
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FutureResult<bool, ExecError> checkIfFediverseLink(String url) async {
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final uri = Uri.tryParse(url);
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if (uri == null) {
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return buildErrorResult(
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type: ErrorType.parsingError,
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message: 'Invalid URL: $url',
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);
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}
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final domain = uri.host;
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ServerData? data = knownServers[domain];
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if (data != null) {
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return Result.ok(data.isFediverse);
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}
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final serverData = await refreshServerData(domain);
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knownServers[domain] = serverData;
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return Result.ok(serverData.isFediverse);
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}
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static Future<ServerData> refreshServerData(String domainName) async {
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final uri = Uri.https(
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domainName,
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'/.well-known/nodeinfo',
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);
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final result = await getUrl(uri)
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.andThenSuccessAsync((page) async {
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return jsonDecode(page.data);
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})
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.andThenAsync(
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(json) async =>
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json is Map<String, dynamic> ? Result.ok(json) : Result.error(''),
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)
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.andThenSuccessAsync((json) async => json['links'] ?? [])
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.andThenAsync(
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(nodeInfos) async => nodeInfos.isNotEmpty
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? Result.ok(nodeInfos.last)
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: Result.error(''),
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)
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.andThenAsync((nodeInfo) async {
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final rel = nodeInfo['rel']?.toString() ?? '';
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if (!rel.startsWith('http://nodeinfo.diaspora.software/ns/schema/')) {
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return Result.error('');
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}
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final nodeInfoUrl = Uri.tryParse(nodeInfo['href'] ?? '');
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if (nodeInfoUrl == null) {
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return Result.error('');
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}
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return await getUrl(nodeInfoUrl);
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})
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.andThenSuccessAsync(
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(nodeInfoData) async => jsonDecode(nodeInfoData.data))
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.andThenSuccessAsync((nodeInfoJson) async {
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final softwareName =
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nodeInfoJson['software']?['name']?.toString() ?? '';
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final softwareVersion =
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nodeInfoJson['software']?['version']?.toString() ?? '';
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final isFediverse =
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softwareName.isNotEmpty && softwareVersion.isNotEmpty;
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return ServerData(
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domainName: domainName,
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isFediverse: isFediverse,
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softwareName: softwareName,
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softwareVersion: softwareVersion,
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);
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});
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return result.getValueOrElse(
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() => ServerData(domainName: domainName, isFediverse: false));
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}
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}
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