77 lines
2.5 KiB
Dart
77 lines
2.5 KiB
Dart
// lib/remote/remote_client.dart
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import 'dart:convert';
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import 'package:http/http.dart' as http;
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import 'remote_models.dart';
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import 'auth_client.dart';
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class RemoteJsonClient {
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final Uri indexUri; // es. https://prova.patachina.it/photos/
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final RemoteAuth? auth; // opzionale: se presente, aggiunge Bearer
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RemoteJsonClient(
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String baseUrl,
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String indexPath, {
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this.auth,
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}) : indexUri = Uri.parse(baseUrl.endsWith('/') ? baseUrl : '$baseUrl/')
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.resolve(indexPath);
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Future<List<RemotePhotoItem>> fetchAll() async {
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Map<String, String> headers = {};
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if (auth != null) {
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headers = await auth!.authHeaders();
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}
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// DEBUG: stampa la URL precisa
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// ignore: avoid_print
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print('[remote-client] GET $indexUri');
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http.Response res;
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try {
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res = await http.get(indexUri, headers: headers).timeout(const Duration(seconds: 20));
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} catch (e) {
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throw Exception('Errore rete su $indexUri: $e');
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}
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// Retry 1 volta in caso di 401 (token scaduto/invalidato)
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if (res.statusCode == 401 && auth != null) {
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headers = await auth!.refreshAndHeaders();
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res = await http.get(indexUri, headers: headers).timeout(const Duration(seconds: 20));
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}
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// Follow 301/302 mantenendo Authorization
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if ({301,302,307,308}.contains(res.statusCode) && res.headers['location'] != null) {
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final loc = res.headers['location']!;
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final redirectUri = indexUri.resolve(loc);
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res = await http.get(redirectUri, headers: headers).timeout(const Duration(seconds: 20));
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}
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if (res.statusCode != 200) {
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final snippet = utf8.decode(res.bodyBytes.take(200).toList());
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throw Exception('HTTP ${res.statusCode} ${res.reasonPhrase} su $indexUri. Body: $snippet');
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}
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final body = utf8.decode(res.bodyBytes);
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// DEBUG
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print('DEBUG JSON: $body');
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// Qui siamo espliciti: ci aspettiamo SEMPRE una lista top-level
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final dynamic decoded = json.decode(body);
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if (decoded is! List) {
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throw Exception('JSON inatteso: atteso array top-level, ricevuto ${decoded.runtimeType}');
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}
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final List<dynamic> rawList = decoded;
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// Costruiamo a mano la List<RemotePhotoItem>, tipizzata esplicitamente
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final List<RemotePhotoItem> items = rawList.map<RemotePhotoItem>((e) {
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if (e is! Map<String, dynamic>) {
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throw Exception('Elemento JSON non è una mappa: ${e.runtimeType} -> $e');
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}
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return RemotePhotoItem.fromJson(e);
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}).toList();
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return items;
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}
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}
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