Deprecate AttachmentType.LINK and fix link styling not applied in MessageReplyView.

CHANGELOG.md

@@ -9,6 +9,8 @@
 - Add `markMessagesPending` flag to the `Config` model indicating whether pending messages are enabled for the channel. [#5784](https://github.com/GetStream/stream-chat-android/pull/5784)
 
 ### ⚠️ Changed
+- Deprecate `AttachmentType.LINK` because it is not officially supported as a separate attachment type. [#5848](https://github.com/GetStream/stream-chat-android/pull/5848)
+- Deprecate `Attachment.isLink()` because it is not officially supported as a separate attachment type. [#5848](https://github.com/GetStream/stream-chat-android/pull/5848)
 
 ### ❌ Removed
 
@@ -61,6 +63,7 @@
 ## stream-chat-android-ui-components
 ### 🐞 Fixed
 - Filter out Poll Options differing only on whitespaces. [#5913](https://github.com/GetStream/stream-chat-android/pull/5913)
+- Fix `MessageReplyStyle.linkBackgroundColorMine`, `MessageReplyStyle.linkBackgroundColorTheirs`, `MessageReplyStyle.linkStyleMine` and `MessageReplyStyle.linkStyleTheirs` customizations not applied to the `MessageReplyView`. [#5848](https://github.com/GetStream/stream-chat-android/pull/5848)
 
 ### ⬆️ Improved
 

DEPRECATIONS.md

@@ -4,6 +4,8 @@ This document lists deprecated constructs in the SDK, with their expected time 
 
 | API / Feature                                                                                                                                                                              | Deprecated (warning)   | Deprecated (error)    | Removed               | Notes                                                                                                                                                                                                                                                                                                                                                |
 |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------|-----------------------|-----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `AttachmentType.LINK` constant                                                                                                                                                             | 2025.09.08 ⌛           |                       |                       | This property has been deprecated. The attachment of type 'LINK' is not officially supported, and Attachment.type can never have a value equal to "link".                                                                                                                                                                                            |
+| `Attachment.isLink()` method                                                                                                                                                               | 2025.09.08 ⌛           |                       |                       | This method has been deprecated. The attachment of type 'LINK' is not officially supported, and Attachment.type can never have a value equal to "link".                                                                                                                                                                                              |
 | `StreamColors.linkBackground` property                                                                                                                                                     | 2025.08.12 ⌛           |                       |                       | This property has been deprecated. Please use `MessageTheme.linkBackgroundColor` instead.                                                                                                                                                                                                                                                            |
 | `SendReactionListener.onSendReactionPrecondition(currentUser: User?, reaction: Reaction)` method                                                                                           | 2025.07.30 ⌛           |                       |                       | This method has been deprecated. Please use `SendReactionListener.onSendReactionPrecondition(cid: String?, currentUser: User?, reaction: Reaction) instead`.                                                                                                                                                                                         |
 | `NotificationConfig.ignorePushMessagesWhenUserOnline` property                                                                                                                             | 2025.07.11 ⌛           |                       |                       | This property has been deprecated. Please use `NotificationConfig.ignorePushMessageWhenUserOnline(type: String) instead`.                                                                                                                                                                                                                            |

stream-chat-android-client/src/main/java/io/getstream/chat/android/client/utils/attachment/AttachmentUtils.kt

@@ -52,6 +52,11 @@ public fun Attachment.isImgur(): Boolean = type == AttachmentType.IMGUR
 /**
  * @return If the attachment type is link.
  */
+@Deprecated(
+    message = "The attachment of type 'LINK' is not officially supported, and the Attachment.type can never have " +
+        "a value == 'link'. This method will always return false.",
+    level = DeprecationLevel.WARNING,
+)
 public fun Attachment.isLink(): Boolean = type == AttachmentType.LINK
 
 /**

stream-chat-android-core/src/main/java/io/getstream/chat/android/models/AttachmentType.kt

@@ -20,14 +20,41 @@ package io.getstream.chat.android.models
  * Represents types of attachments.
  */
 public object AttachmentType {
+    /** Image attachment type. */
     public const val IMAGE: String = "image"
+
+    /** Imgur attachment type. */
     public const val IMGUR: String = "imgur"
+
+    /** Giphy attachment type. */
     public const val GIPHY: String = "giphy"
+
+    /** Video attachment type. */
     public const val VIDEO: String = "video"
+
+    /** Audio attachment type. */
     public const val AUDIO: String = "audio"
+
+    /** Product attachment type. */
     public const val PRODUCT: String = "product"
+
+    /** File attachment type. */
     public const val FILE: String = "file"
+
+    /**
+     * @deprecated The attachment of type 'LINK' is not officially supported, and the Attachment.type can never have a
+     * value == 'link'.
+     */
+    @Deprecated(
+        message = "The attachment of type 'LINK' is not officially supported, and the Attachment.type can never have " +
+            "a value == 'link'",
+        level = DeprecationLevel.WARNING,
+    )
     public const val LINK: String = "link"
+
+    /** Audio recording (voice message) attachment type. */
     public const val AUDIO_RECORDING: String = "voiceRecording"
+
+    /** Unknown attachment type. */
     public const val UNKNOWN: String = "unknown"
 }

stream-chat-android-ui-components/api/stream-chat-android-ui-components.api

@@ -521,9 +521,14 @@ public abstract class io/getstream/chat/android/ui/feature/channels/list/adapter
 }
 
 public final class io/getstream/chat/android/ui/feature/gallery/AttachmentActivity : androidx/appcompat/app/AppCompatActivity {
+	public static final field Companion Lio/getstream/chat/android/ui/feature/gallery/AttachmentActivity$Companion;
 	public fun <init> ()V
 }
 
+public final class io/getstream/chat/android/ui/feature/gallery/AttachmentActivity$Companion {
+	public final fun createIntent (Landroid/content/Context;Ljava/lang/String;Ljava/lang/String;)Landroid/content/Intent;
+}
+
 public final class io/getstream/chat/android/ui/feature/gallery/AttachmentGalleryActivity : androidx/appcompat/app/AppCompatActivity {
 	public static final field Companion Lio/getstream/chat/android/ui/feature/gallery/AttachmentGalleryActivity$Companion;
 	public fun <init> ()V

stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/gallery/AttachmentActivity.kt

@@ -16,6 +16,8 @@
 
 package io.getstream.chat.android.ui.feature.gallery
 
+import android.content.Context
+import android.content.Intent
 import android.os.Bundle
 import android.webkit.WebResourceError
 import android.webkit.WebResourceRequest
@@ -58,11 +60,15 @@ public class AttachmentActivity : AppCompatActivity() {
         setupEdgeToEdge()
         configUIs()
 
-        val type = intent.getStringExtra("type")
-        val url = intent.getStringExtra("url")
+        val type = intent.getStringExtra(EXTRA_TYPE)
+        val url = intent.getStringExtra(EXTRA_URL)
         if (type.isNullOrEmpty() || url.isNullOrEmpty()) {
             logger.e { "This file can't be displayed. TYPE or URL is missing." }
-            Toast.makeText(this, getString(R.string.stream_ui_message_list_attachment_display_error), Toast.LENGTH_SHORT).show()
+            Toast.makeText(
+                this,
+                getString(R.string.stream_ui_message_list_attachment_display_error),
+                Toast.LENGTH_SHORT,
+            ).show()
             return
         }
         showAttachment(type, url)
@@ -153,4 +159,24 @@ public class AttachmentActivity : AppCompatActivity() {
             Toast.makeText(this@AttachmentActivity, error.toString(), Toast.LENGTH_SHORT).show()
         }
     }
+
+    public companion object {
+        private const val EXTRA_TYPE = "type"
+        private const val EXTRA_URL = "url"
+
+        /**
+         * Creates an Intent to start the AttachmentActivity.
+         *
+         * @param context The context to use for creating the Intent.
+         * @param type The type of the attachment (e.g., "giphy", etc.).
+         * @param url The URL of the attachment to display.
+         * @return An Intent to start the AttachmentActivity.
+         */
+        public fun createIntent(context: Context, type: String?, url: String): Intent {
+            return Intent(context, AttachmentActivity::class.java).apply {
+                putExtra(EXTRA_TYPE, type)
+                putExtra(EXTRA_URL, url)
+            }
+        }
+    }
 }

stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/messages/list/adapter/view/MessageReplyView.kt

@@ -16,19 +16,21 @@
 
 package io.getstream.chat.android.ui.feature.messages.list.adapter.view
 
+import android.annotation.SuppressLint
 import android.content.Context
 import android.graphics.Paint
 import android.util.AttributeSet
 import android.widget.FrameLayout
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.constraintlayout.widget.ConstraintSet
+import androidx.core.util.PatternsCompat
 import androidx.core.view.isVisible
 import androidx.core.view.updateLayoutParams
 import com.google.android.material.shape.MaterialShapeDrawable
 import io.getstream.chat.android.client.ChatClient
 import io.getstream.chat.android.client.extensions.durationInMs
 import io.getstream.chat.android.client.utils.attachment.isAudioRecording
-import io.getstream.chat.android.client.utils.attachment.isLink
+import io.getstream.chat.android.client.utils.attachment.isImage
 import io.getstream.chat.android.client.utils.message.isDeleted
 import io.getstream.chat.android.models.Attachment
 import io.getstream.chat.android.models.Message
@@ -185,10 +187,25 @@ public class MessageReplyView : FrameLayout {
         }
     }
 
-    private fun isLink(message: Message) = message.attachments.run {
-        size == 1 && last().isLink()
+    /**
+     * Checks if the message contains a link, either as an enriched link (attachment) or as a plain text URL.
+     */
+    private fun isLink(message: Message) = hasEnrichedLink(message) || hasLinkInText(message)
+
+    private fun hasEnrichedLink(message: Message) = message.attachments.run {
+        // Messages with enriched links have an image attachment with title_link or og_scrape_url set.
+        if (size == 1) {
+            val lastAttachment = last()
+            lastAttachment.isImage() && (lastAttachment.titleLink != null || lastAttachment.ogUrl != null)
+        } else {
+            false
+        }
     }
 
+    @SuppressLint("RestrictedApi")
+    private fun hasLinkInText(message: Message) =
+        PatternsCompat.AUTOLINK_WEB_URL.matcher(message.text).matches()
+
     private fun setAttachmentImage(message: Message) {
         if (ChatUI.quotedAttachmentFactoryManager.canHandle(message)) {
             binding.attachmentContainer.isVisible = true
@@ -227,9 +244,7 @@ public class MessageReplyView : FrameLayout {
                 displayedText
             }
         } else {
-            if (attachment.isLink()) {
-                attachment.titleLink ?: attachment.ogUrl
-            } else if (attachment.isAudioRecording()) {
+            if (attachment.isAudioRecording()) {
                 context.getString(R.string.stream_ui_message_audio_reply_info)
             } else {
                 attachment.title ?: attachment.name

stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/feature/messages/list/adapter/viewholder/attachment/UnsupportedAttachmentFactory.kt

@@ -98,7 +98,6 @@ public class UnsupportedAttachmentFactory : AttachmentFactory {
             AttachmentType.VIDEO,
             AttachmentType.AUDIO,
             AttachmentType.FILE,
-            AttachmentType.LINK,
             AttachmentType.AUDIO_RECORDING,
         )
     }

stream-chat-android-ui-components/src/main/kotlin/io/getstream/chat/android/ui/navigation/destinations/AttachmentDestination.kt

@@ -97,10 +97,7 @@ public open class AttachmentDestination(
             return
         }
 
-        val intent = Intent(context, AttachmentActivity::class.java).apply {
-            putExtra("type", type)
-            putExtra("url", url)
-        }
+        val intent = AttachmentActivity.createIntent(context, type, url)
         start(intent)
     }