👽 Fix attachment uploading

lib/providers/sn_attachment.dart

@@ -21,7 +21,7 @@ class SnAttachmentProvider {
 
   void putCache(Iterable<SnAttachment> items, {bool noCheck = false}) {
     for (final item in items) {
-      if ((item.isAnalyzed && item.isUploaded) || noCheck) {
+      if (item.isAnalyzed || noCheck) {
         _cache[item.rid] = item;
       }
     }
@@ -34,7 +34,7 @@ class SnAttachmentProvider {
 
     final resp = await _sn.client.get('/cgi/uc/attachments/$rid/meta');
     final out = SnAttachment.fromJson(resp.data);
-    if (out.isAnalyzed && out.isUploaded) {
+    if (out.isAnalyzed) {
       _cache[rid] = out;
     }
 
@@ -62,11 +62,12 @@ class SnAttachmentProvider {
           'id': pendingFetch.join(','),
         },
       );
-      final out = resp.data['data'].map((e) => e['id'] == 0 ? null : SnAttachment.fromJson(e)).toList();
+      final List<SnAttachment?> out =
+          resp.data['data'].map((e) => e['id'] == 0 ? null : SnAttachment.fromJson(e)).cast<SnAttachment?>().toList();
 
       for (final item in out) {
         if (item == null) continue;
-        if (item.isAnalyzed && item.isUploaded) {
+        if (item.isAnalyzed) {
           _cache[item.rid] = item;
         }
         result[randomMapping[item.rid]!] = item;
@@ -117,7 +118,7 @@ class SnAttachmentProvider {
     return SnAttachment.fromJson(resp.data);
   }
 
-  Future<(SnAttachment, int)> chunkedUploadInitialize(
+  Future<(SnAttachmentFragment, int)> chunkedUploadInitialize(
     int size,
     String filename,
     String pool,
@@ -134,7 +135,7 @@ class SnAttachmentProvider {
       mimetypeOverride = mimetype;
     }
 
-    final resp = await _sn.client.post('/cgi/uc/attachments/multipart', data: {
+    final resp = await _sn.client.post('/cgi/uc/fragments', data: {
       'alt': fileAlt,
       'name': filename,
       'pool': pool,
@@ -143,17 +144,17 @@ class SnAttachmentProvider {
       if (mimetypeOverride != null) 'mimetype': mimetypeOverride,
     });
 
-    return (SnAttachment.fromJson(resp.data['meta']), resp.data['chunk_size'] as int);
+    return (SnAttachmentFragment.fromJson(resp.data['meta']), resp.data['chunk_size'] as int);
   }
 
-  Future<SnAttachment> _chunkedUploadOnePart(
+  Future<dynamic> _chunkedUploadOnePart(
     Uint8List data,
     String rid,
     String cid, {
     Function(double progress)? onProgress,
   }) async {
     final resp = await _sn.client.post(
-      '/cgi/uc/attachments/multipart/$rid/$cid',
+      '/cgi/uc/fragments/$rid/$cid',
       data: data,
       options: Options(headers: {'Content-Type': 'application/octet-stream'}),
       onSendProgress: (count, total) {
@@ -163,21 +164,27 @@ class SnAttachmentProvider {
       },
     );
 
-    return SnAttachment.fromJson(resp.data);
+    if (resp.data['attachment'] != null) {
+      return SnAttachment.fromJson(resp.data['attachment']);
+    } else {
+      return SnAttachmentFragment.fromJson(resp.data['fragment']);
+    }
   }
 
   Future<SnAttachment> chunkedUploadParts(
     XFile file,
-    SnAttachment place,
+    SnAttachmentFragment place,
     int chunkSize, {
     Function(double progress)? onProgress,
   }) async {
-    final Map<String, dynamic> chunks = place.fileChunks ?? {};
+    final Map<String, dynamic> chunks = place.fileChunks;
     var currentTask = 0;
 
     final queue = Queue<Future<void>>();
     final activeTasks = <Future<void>>[];
 
+    late SnAttachment out;
+
     for (final entry in chunks.entries) {
       queue.add(() async {
         final beginCursor = entry.value * chunkSize;
@@ -187,7 +194,7 @@ class SnAttachmentProvider {
         );
         final data = Uint8List.fromList(await file.openRead(beginCursor, endCursor).expand((chunk) => chunk).toList());
 
-        place = await _chunkedUploadOnePart(
+        final result = await _chunkedUploadOnePart(
           data,
           place.rid,
           entry.key,
@@ -197,6 +204,12 @@ class SnAttachmentProvider {
         onProgress?.call(overallProgress);
 
         currentTask++;
+
+        if (result is SnAttachmentFragment) {
+          place = result;
+        } else {
+          out = result as SnAttachment;
+        }
       }());
     }
 
@@ -213,7 +226,7 @@ class SnAttachmentProvider {
       }
     }
 
-    return place;
+    return out;
   }
 
   Future<SnAttachment> updateOne(