feat: Added bold mentions in previews, added file names for last message

lib/src/channel_preview.dart

@@ -220,7 +220,9 @@ class ChannelPreview extends StatelessWidget {
               } else if (e.type == 'giphy') {
                 return '[GIF]';
               }
-              return null;
+              return e == lastMessage.attachments.last
+                  ? e.title
+                  : '${e.title}, ';
             }).where((e) => e != null),
             lastMessage.text ?? '',
           ];
@@ -228,22 +230,53 @@ class ChannelPreview extends StatelessWidget {
           text = parts.join(' ');
         }
 
-        return Text(
+        return RichText(
-          text,
           maxLines: 1,
           overflow: TextOverflow.ellipsis,
-          style:
+          text: _getDisplayText(
-              StreamChatTheme.of(context).channelPreviewTheme.subtitle.copyWith(
+            text,
-                    color: StreamChatTheme.of(context)
+            lastMessage.mentionedUsers,
-                        .channelPreviewTheme
+            StreamChatTheme.of(context).channelPreviewTheme.subtitle.copyWith(
-                        .subtitle
+                color: StreamChatTheme.of(context)
-                        .color,
+                    .channelPreviewTheme
-                    fontStyle: (lastMessage.isSystem || lastMessage.isDeleted)
+                    .subtitle
-                        ? FontStyle.italic
+                    .color,
-                        : FontStyle.normal,
+                fontStyle: (lastMessage.isSystem || lastMessage.isDeleted)
-                  ),
+                    ? FontStyle.italic
+                    : FontStyle.normal),
+            StreamChatTheme.of(context).channelPreviewTheme.subtitle.copyWith(
+                color: StreamChatTheme.of(context)
+                    .channelPreviewTheme
+                    .subtitle
+                    .color,
+                fontStyle: (lastMessage.isSystem || lastMessage.isDeleted)
+                    ? FontStyle.italic
+                    : FontStyle.normal,
+                fontWeight: FontWeight.bold),
+          ),
         );
       },
     );
   }
+
+  TextSpan _getDisplayText(String text, List<User> mentions,
+      TextStyle normalTextStyle, TextStyle mentionsTextStyle) {
+    var textList = text.split(' ');
+    List<TextSpan> resList = [];
+    for (var e in textList) {
+      if (mentions.any((element) => '@${element.name}' == e)) {
+        resList.add(TextSpan(
+          text: '$e ',
+          style: mentionsTextStyle,
+        ));
+      } else {
+        resList.add(TextSpan(
+          text: '$e ',
+          style: normalTextStyle,
+        ));
+      }
+    }
+
+    return TextSpan(children: resList);
+  }
 }

lib/src/message_search_item.dart

@@ -113,7 +113,9 @@ class MessageSearchItem extends StatelessWidget {
           } else if (e.type == 'giphy') {
             return '[GIF]';
           }
-          return null;
+          return e == message.attachments.last
+              ? (e.title ?? 'File')
+              : '${e.title ?? 'File'}, ';
         }).where((e) => e != null),
         message.text ?? '',
       ];
@@ -121,6 +123,26 @@ class MessageSearchItem extends StatelessWidget {
       text = parts.join(' ');
     }
 
+    return RichText(
+      maxLines: 1,
+      overflow: TextOverflow.ellipsis,
+      text: _getDisplayText(
+        text,
+        message.mentionedUsers,
+        StreamChatTheme.of(context).channelPreviewTheme.subtitle.copyWith(
+              fontStyle: (message.isSystem || message.isDeleted)
+                  ? FontStyle.italic
+                  : FontStyle.normal,
+            ),
+        StreamChatTheme.of(context).channelPreviewTheme.subtitle.copyWith(
+              fontStyle: (message.isSystem || message.isDeleted)
+                  ? FontStyle.italic
+                  : FontStyle.normal,
+              fontWeight: FontWeight.bold,
+            ),
+      ),
+    );
+
     return Text(
       text,
       maxLines: 1,
@@ -132,4 +154,25 @@ class MessageSearchItem extends StatelessWidget {
           ),
     );
   }
+
+  TextSpan _getDisplayText(String text, List<User> mentions,
+      TextStyle normalTextStyle, TextStyle mentionsTextStyle) {
+    var textList = text.split(' ');
+    List<TextSpan> resList = [];
+    for (var e in textList) {
+      if (mentions.any((element) => '@${element.name}' == e)) {
+        resList.add(TextSpan(
+          text: '$e ',
+          style: mentionsTextStyle,
+        ));
+      } else {
+        resList.add(TextSpan(
+          text: '$e ',
+          style: normalTextStyle,
+        ));
+      }
+    }
+
+    return TextSpan(children: resList);
+  }
 }