36 lines
959 B
Dart
36 lines
959 B
Dart
import 'dart:convert';
|
|
import 'dart:developer';
|
|
|
|
import 'package:flutter/material.dart';
|
|
import 'package:provider/provider.dart';
|
|
import 'package:surface/providers/sn_network.dart';
|
|
import 'package:surface/types/link.dart';
|
|
|
|
class SnLinkPreviewProvider {
|
|
late final SnNetworkProvider _sn;
|
|
|
|
final Map<String, SnLinkMeta> _cache = {};
|
|
|
|
SnLinkPreviewProvider(BuildContext context) {
|
|
_sn = context.read<SnNetworkProvider>();
|
|
}
|
|
|
|
Future<SnLinkMeta?> getLinkMeta(String url) async {
|
|
final b64 = utf8.fuse(base64Url);
|
|
final target = b64.encode(url);
|
|
if (_cache.containsKey(target)) return _cache[target];
|
|
|
|
log('[LinkPreview] Fetching $url ($target)');
|
|
|
|
try {
|
|
final resp = await _sn.client.get('/cgi/re/link/$target');
|
|
final meta = SnLinkMeta.fromJson(resp.data);
|
|
_cache[url] = meta;
|
|
return meta;
|
|
} catch (err) {
|
|
log('[LinkPreview] Failed to fetch $url ($target)...');
|
|
return null;
|
|
}
|
|
}
|
|
}
|