feat(ui): add support for OG Attachment preview.

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat/lib/src/core/api/message_api.dart

@@ -16,12 +16,14 @@ class MessageApi {
     String channelType,
     Message message, {
     bool skipPush = false,
+    bool skipEnrichUrl = false,
   }) async {
     final response = await _client.post(
       '/channels/$channelType/$channelId/message',
       data: {
         'message': message,
         'skip_push': skipPush,
+        'skip_enrich_url': skipEnrichUrl,
       },
     );
     return SendMessageResponse.fromJson(response.data);
@@ -51,11 +53,15 @@ class MessageApi {
 
   /// Updates the given [message]
   Future<UpdateMessageResponse> updateMessage(
-    Message message,
-  ) async {
+    Message message, {
+    bool skipEnrichUrl = false,
+  }) async {
     final response = await _client.post(
       '/messages/${message.id}',
-      data: {'message': message},
+      data: {
+        'message': message,
+        'skip_enrich_url': skipEnrichUrl,
+      },
     );
     return UpdateMessageResponse.fromJson(response.data);
   }
@@ -67,12 +73,14 @@ class MessageApi {
     String messageId, {
     Map<String, Object?>? set,
     List<String>? unset,
+    bool skipEnrichUrl = false,
   }) async {
     final response = await _client.put(
       '/messages/$messageId',
       data: {
         if (set != null) 'set': set,
         if (unset != null) 'unset': unset,
+        'skip_enrich_url': skipEnrichUrl,
       },
     );
     return UpdateMessageResponse.fromJson(response.data);

packages/stream_chat/lib/src/core/models/attachment.dart

@@ -2,6 +2,7 @@
 
 import 'package:equatable/equatable.dart';
 import 'package:json_annotation/json_annotation.dart';
+import 'package:stream_chat/src/core/api/responses.dart';
 import 'package:stream_chat/src/core/models/action.dart';
 import 'package:stream_chat/src/core/models/attachment_file.dart';
 import 'package:stream_chat/src/core/util/serializer.dart';
@@ -66,6 +67,21 @@ class Attachment extends Equatable {
         topLevelFields + dbSpecificTopLevelFields,
       ));
 
+  factory Attachment.fromOGAttachment(OGAttachmentResponse ogAttachment) =>
+      Attachment(
+        type: ogAttachment.type,
+        title: ogAttachment.title,
+        titleLink: ogAttachment.titleLink,
+        text: ogAttachment.text,
+        imageUrl: ogAttachment.imageUrl,
+        thumbUrl: ogAttachment.thumbUrl,
+        authorName: ogAttachment.authorName,
+        authorLink: ogAttachment.authorLink,
+        assetUrl: ogAttachment.assetUrl,
+        ogScrapeUrl: ogAttachment.ogScrapeUrl,
+        uploadState: const UploadState.success(),
+      );
+
   ///The attachment type based on the URL resource. This can be: audio,
   ///image or video
   final String? type;
@@ -229,6 +245,33 @@ class Attachment extends Equatable {
         extraData: extraData ?? this.extraData,
       );
 
+  Attachment merge(Attachment? other) {
+    if (other == null) return this;
+    return copyWith(
+      type: other.type,
+      titleLink: other.titleLink,
+      title: other.title,
+      thumbUrl: other.thumbUrl,
+      text: other.text,
+      pretext: other.pretext,
+      ogScrapeUrl: other.ogScrapeUrl,
+      imageUrl: other.imageUrl,
+      footerIcon: other.footerIcon,
+      footer: other.footer,
+      fields: other.fields,
+      fallback: other.fallback,
+      color: other.color,
+      authorName: other.authorName,
+      authorLink: other.authorLink,
+      authorIcon: other.authorIcon,
+      assetUrl: other.assetUrl,
+      actions: other.actions,
+      file: other.file,
+      uploadState: other.uploadState,
+      extraData: other.extraData,
+    );
+  }
+
   @override
   List<Object?> get props => [
         id,