⚡ Improve sticker loading

lib/providers/stickers.dart

@@ -1,47 +1,48 @@
+import 'dart:async';
+
 import 'package:get/get.dart';
 import 'package:solian/exceptions/request.dart';
-import 'package:solian/models/pagination.dart';
 import 'package:solian/models/stickers.dart';
 import 'package:solian/services.dart';
 
 class StickerProvider extends GetxController {
-  final RxMap<String, String> aliasImageMapping = RxMap();
-  final RxList<Sticker> availableStickers = RxList.empty(growable: true);
+  final RxMap<String, FutureOr<Sticker?>> stickerCache = RxMap();
 
-  Future<void> refreshAvailableStickers() async {
-    availableStickers.clear();
-    aliasImageMapping.clear();
-
-    final client = await ServiceFinder.configureClient('files');
-    final resp = await client.get(
-      '/stickers/manifest?take=100',
-    );
-    if (resp.statusCode == 200) {
-      final result = PaginationResult.fromJson(resp.body);
-      final out = result.data?.map((e) => StickerPack.fromJson(e)).toList();
-      if (out == null) return;
-
-      for (final pack in out) {
-        for (final sticker in (pack.stickers ?? List<Sticker>.empty())) {
-          sticker.pack = pack;
-          aliasImageMapping[sticker.textPlaceholder.toUpperCase()] =
-              sticker.imageUrl;
-          availableStickers.add(sticker);
-        }
-      }
-    }
-    availableStickers.refresh();
+  Future<Sticker?> getStickerByAlias(String alias) {
+    if (stickerCache.containsKey(alias)) {
+      return Future.value(stickerCache[alias]);
     }
 
-  Future<Sticker?> getStickerByAlias(String alias) async {
+    stickerCache[alias] = Future(() async {
       final client = await ServiceFinder.configureClient('files');
       final resp = await client.get(
         '/stickers/lookup/$alias',
       );
       if (resp.statusCode != 200) {
+        if (resp.statusCode == 404) {
+          stickerCache[alias] = null;
+        }
         throw RequestException(resp);
       }
 
       return Sticker.fromJson(resp.body);
+    }).then((result) {
+      stickerCache[alias] = result;
+      return result;
+    });
+
+    return Future.value(stickerCache[alias]);
+  }
+
+  Future<List<Sticker>> searchStickerByAlias(String alias) async {
+    final client = await ServiceFinder.configureClient('files');
+    final resp = await client.get(
+      '/stickers/lookup?probe=$alias',
+    );
+    if (resp.statusCode != 200) {
+      throw RequestException(resp);
+    }
+
+    return List<Sticker>.from(resp.body.map((x) => Sticker.fromJson(x)));
   }
 }

lib/widgets/chat/chat_message_input.dart

@@ -405,12 +405,9 @@ class _ChatMessageInputState extends State<ChatMessageInput> {
                     if (emojiMatch != null) {
                       final StickerProvider stickers = Get.find();
                       final emoteSearch = emojiMatch[2]!;
-                      return stickers.availableStickers
-                          .where(
-                            (x) => x.textWarpedPlaceholder
-                                .toUpperCase()
-                                .contains(emoteSearch.toUpperCase()),
-                          )
+                      final result = await stickers
+                          .searchStickerByAlias(emoteSearch.substring(1));
+                      return result
                           .map(
                             (x) => ChatMessageSuggestion(
                               type: 'emotes',

lib/widgets/markdown_text_content.dart

@@ -89,7 +89,6 @@ class MarkdownTextContent extends StatelessWidget {
             case 'stickers':
               double radius = 8;
               final StickerProvider sticker = Get.find();
-              url = sticker.aliasImageMapping[segments[1].toUpperCase()]!;
               if (emojiMatch.length <= 1 && isOnlyEmoji) {
                 width = 128;
                 height = 128;
@@ -106,11 +105,20 @@ class MarkdownTextContent extends StatelessWidget {
                 borderRadius: BorderRadius.all(Radius.circular(radius)),
                 child: Container(
                   color: Theme.of(context).colorScheme.surfaceContainer,
-                  child: AutoCacheImage(
-                    url,
+                  child: FutureBuilder(
+                    future: sticker.getStickerByAlias(segments[1]),
+                    builder: (context, snapshot) {
+                      if (!snapshot.hasData) {
+                        return const Center(child: CircularProgressIndicator());
+                      }
+                      return AutoCacheImage(
+                        snapshot.data!.imageUrl,
                         width: width,
                         height: height,
                         fit: fit,
+                        noErrorWidget: true,
+                      );
+                    },
                   ),
                 ),
               ).paddingSymmetric(vertical: 4);
@@ -172,7 +180,8 @@ class _CustomEmoteInlineSyntax extends InlineSyntax {
   bool onMatch(markdown.InlineParser parser, Match match) {
     final StickerProvider sticker = Get.find();
     final alias = match[1]!.toUpperCase();
-    if (sticker.aliasImageMapping[alias] == null) {
+    if (sticker.stickerCache.containsKey(alias) &&
+        sticker.stickerCache[alias] == null) {
       parser.advanceBy(1);
       return false;
     }