fixed exception when uploading files with no mimetype

lib/business_logic/chat/chat.dart

@@ -91,11 +91,23 @@ Future<ConversationModelResult> _getConversationModels(
     return ConversationModelResult([]);
   }
 
-  return ConversationModelResult(jsonDecode(result.body)
-      .map<ConversationModel>(
-        (e) => ConversationModel.fromJson(e, identityName),
-      )
-      .toList());
+  String? newMaxId = result.headers["link"];
+  final firstOpen = newMaxId?.indexOf("<");
+  final firstClose = newMaxId?.indexOf(">");
+  newMaxId = newMaxId?.substring(firstOpen! + 1, firstClose);
+  if (newMaxId != null) {
+    final maxIdUri = Uri.parse(newMaxId);
+    newMaxId = maxIdUri.queryParameters["max_id"];
+  }
+
+  return ConversationModelResult(
+    jsonDecode(result.body)
+        .map<ConversationModel>(
+          (e) => ConversationModel.fromJson(e, identityName),
+        )
+        .toList(),
+    maxIds: {identityName: newMaxId},
+  );
 }
 
 Future<ConversationModelResult> getAllConversationModels(
@@ -104,19 +116,29 @@ Future<ConversationModelResult> getAllConversationModels(
   global.settings!.identities.forEach((key, value) {
     futureResults.add(_getConversationModels(key, maxIds[key]));
   });
+  List<ConversationModelResult> results = [];
   List<ConversationModel> models = [];
   for (var element in futureResults) {
-    models.addAll((await element).models);
+    final r = await element;
+    results.add(r);
+    models.addAll(r.models);
   }
   models.sort();
-  models = models.reversed.toList().sublist(0, global.settings!.batchSize);
-  Map<String, String?> newMaxIds = {};
-  for (var element in models) {
-    if (newMaxIds[element.identity] == null) {
-      newMaxIds.addAll({element.identity: element.id});
-    } else if (element.id.compareTo(newMaxIds[element.identity]!) < 0) {
-      newMaxIds.addAll({element.identity: element.id});
-    }
+  models = models.reversed.toList();
+  if (models.length > global.settings!.batchSize) {
+    models = models.sublist(0, global.settings!.batchSize);
   }
+  Map<String, String?> newMaxIds = {};
+  for (var element in results) {
+    newMaxIds.addAll(element.maxIds);
+  }
+
+  Set<String> appearingIdentities = {};
+  for (var i in models) {
+    appearingIdentities.add(i.identity);
+  }
+
+  newMaxIds.removeWhere((key, value) => (appearingIdentities.contains(value)));
+  print(newMaxIds);
   return ConversationModelResult(models, maxIds: newMaxIds);
 }

lib/dialogues/makepost.dart

@@ -449,7 +449,7 @@ class FileUploadDisplay extends StatelessWidget {
             ),
           ],
         ),
-        if (lookupMimeType(file.path)!.startsWith("image/"))
+        if (lookupMimeType(file.path)?.startsWith("image/") ?? false)
           Image.asset(
             file.path,
             fit: BoxFit.fitWidth,

lib/pages/chat/chat.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:localization/localization.dart';
 import 'package:loris/business_logic/chat/chat.dart';
+import 'package:loris/partials/loadingbox.dart';
 import 'package:loris/partials/post_text_renderer.dart';
 import 'package:loris/themes/themes.dart' as themes;
 import 'package:loris/global.dart' as global;
@@ -16,37 +17,59 @@ class _ChatState extends State<Chat> {
   List<ConversationModel> conversations = [];
   // map that stores max ids for each identity
   Map<String, String?> maxIds = {};
+  final scrollController = ScrollController();
+  bool loading = false;
 
+  // loads more conversations and properly stores all ids
   Future<void> updateConversations() async {
+    if (loading) return;
+    loading = true;
     final models = await getAllConversationModels(maxIds);
-    print(models.maxIds);
     setState(() {
       conversations.addAll(models.models);
       maxIds = models.maxIds;
     });
+    loading = false;
   }
 
   @override
   void initState() {
     updateConversations();
+    scrollController.addListener(() {
+      if (scrollController.position.maxScrollExtent - scrollController.offset <
+          MediaQuery.of(context).size.height) {
+        updateConversations();
+      }
+    });
     super.initState();
   }
 
+  @override
+  void dispose() {
+    scrollController.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Column(
       children: [
         Expanded(
           child: ListView.separated(
+              controller: scrollController,
               shrinkWrap: true,
-              itemBuilder: (context, index) => ConversationButton(
-                    model: conversations[index],
-                  ),
+              itemBuilder: ((context, index) {
+                if (index >= conversations.length) return const LoadingBox();
+                return ConversationButton(
+                  model: conversations[index],
+                  onPressed: () {},
+                );
+              }),
               separatorBuilder: (context, index) => const Divider(
                     height: themes.defaultSeperatorHeight,
                     color: Colors.transparent,
                   ),
-              itemCount: conversations.length),
+              itemCount: conversations.length + 1),
         ),
         Container(
           decoration: BoxDecoration(
@@ -63,35 +86,55 @@ class ConversationButton extends StatelessWidget {
   const ConversationButton({
     super.key,
     required this.model,
+    required this.onPressed,
   });
   final ConversationModel model;
+  final void Function() onPressed;
 
   @override
   Widget build(BuildContext context) {
     return Container(
       decoration: BoxDecoration(
         borderRadius: const BorderRadius.all(themes.defaultRadius),
-        color: Theme.of(context).colorScheme.surface,
+        border: Border.fromBorderSide(BorderSide(
+            color: Theme.of(context).colorScheme.secondary, width: 2)),
       ),
       margin: const EdgeInsets.fromLTRB(themes.defaultSeperatorHeight * 2, 0,
           themes.defaultSeperatorHeight * 2, 0),
       width: global.getWidth(context),
       constraints: global.getConstraints(context),
-      child: Padding(
-        padding: themes.defaultInsideMargins,
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.stretch,
-          children: [
-            Wrap(
-              alignment: WrapAlignment.spaceBetween,
+      child: InkWell(
+        borderRadius: const BorderRadius.all(themes.defaultRadius),
+        onTap: onPressed,
+        child: Ink(
+          decoration: BoxDecoration(
+            borderRadius: const BorderRadius.all(themes.defaultRadius),
+            color: Theme.of(context).colorScheme.surface,
+          ),
+          child: Padding(
+            padding: themes.defaultInsideMargins,
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.stretch,
               children: [
-                SelectableText(model.getAccountsString()),
-                SelectableText("${"you-are".i18n()} ${model.identity}"),
+                if (model.unread)
+                  Row(
+                    children: [
+                      const Icon(Icons.mark_chat_unread),
+                      SelectableText("unread".i18n())
+                    ],
+                  ),
+                Wrap(
+                  alignment: WrapAlignment.spaceBetween,
+                  children: [
+                    if (model.unread) SelectableText(model.getAccountsString()),
+                    SelectableText("${"you-are".i18n()} ${model.identity}"),
+                  ],
+                ),
+                if (model.lastStatus != null)
+                  PostTextRenderer(input: model.lastStatus!.content),
               ],
             ),
-            if (model.lastStatus != null)
-              PostTextRenderer(input: model.lastStatus!.content),
-          ],
+          ),
         ),
       ),
     );