From 8d8519b52e50dc52aee03c69ec707d645ed7c89f Mon Sep 17 00:00:00 2001
From: Sagar <85388413+Sagar0-0@users.noreply.github.com>
Date: Tue, 8 Apr 2025 21:11:29 +0530
Subject: [PATCH] Linkify story captions.

---
 .../viewer/page/StoryViewerPageFragment.kt    | 37 ++++++++++++++++---
 .../layout/stories_viewer_fragment_page.xml   | 17 +++------
 2 files changed, 38 insertions(+), 16 deletions(-)

diff --git a/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPageFragment.kt b/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPageFragment.kt
index a770775396..45f43bc6fb 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPageFragment.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/stories/viewer/page/StoryViewerPageFragment.kt
@@ -9,11 +9,14 @@ import android.graphics.Rect
 import android.graphics.Typeface
 import android.media.AudioManager
 import android.os.Bundle
+import android.text.Spannable
 import android.text.SpannableString
 import android.text.Spanned
-import android.text.method.ScrollingMovementMethod
+import android.text.method.LinkMovementMethod
 import android.text.style.ClickableSpan
 import android.text.style.StyleSpan
+import android.text.style.URLSpan
+import android.text.util.Linkify
 import android.view.GestureDetector
 import android.view.MotionEvent
 import android.view.ScaleGestureDetector
@@ -27,6 +30,7 @@ import androidx.constraintlayout.widget.ConstraintSet
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import androidx.core.os.bundleOf
+import androidx.core.text.util.LinkifyCompat
 import androidx.core.view.GestureDetectorCompat
 import androidx.core.view.animation.PathInterpolatorCompat
 import androidx.fragment.app.DialogFragment
@@ -89,6 +93,8 @@ import org.thoughtcrime.securesms.util.AvatarUtil
 import org.thoughtcrime.securesms.util.BottomSheetUtil
 import org.thoughtcrime.securesms.util.DateUtils
 import org.thoughtcrime.securesms.util.Debouncer
+import org.thoughtcrime.securesms.util.LinkUtil
+import org.thoughtcrime.securesms.util.LongClickCopySpan
 import org.thoughtcrime.securesms.util.LongClickMovementMethod
 import org.thoughtcrime.securesms.util.Projection
 import org.thoughtcrime.securesms.util.ServiceUtil
@@ -941,7 +947,7 @@ class StoryViewerPageFragment :
       if (ranges != null && displayBodySpan.isNotEmpty()) {
         MessageStyler.style(storyPost.conversationMessage.messageRecord.dateSent, ranges, displayBodySpan)
       }
-
+      linkifyUrlLinks(displayBodySpan)
       displayBodySpan
     } else {
       ""
@@ -960,9 +966,9 @@ class StoryViewerPageFragment :
     caption.setOverflowText(overflow)
     caption.maxLines = 5
     caption.text = displayBody
-    caption.setMaxLength(280)
+    caption.setMaxLength(SMALL_CAPTION_TEXT_MAX_LENGTH)
 
-    if (caption.text.length == displayBody.length) {
+    if (displayBody.length <= SMALL_CAPTION_TEXT_MAX_LENGTH) {
       caption.setOnClickListener(null)
       caption.isClickable = false
     } else {
@@ -972,13 +978,32 @@ class StoryViewerPageFragment :
     }
   }
 
+  fun linkifyUrlLinks(spannable: Spannable) {
+    val hasLinks = LinkifyCompat.addLinks(spannable, CAPTION_LINK_PATTERN)
+
+    if (hasLinks) {
+      spannable.getSpans(0, spannable.length, URLSpan::class.java)
+        .filterNot { url -> LinkUtil.isLegalUrl(url.url) }
+        .forEach { spannable.removeSpan(it) }
+
+      val urlSpans = spannable.getSpans(0, spannable.length, URLSpan::class.java)
+
+      for (urlSpan in urlSpans) {
+        val start = spannable.getSpanStart(urlSpan)
+        val end = spannable.getSpanEnd(urlSpan)
+        val span = LongClickCopySpan(urlSpan.url)
+        spannable.setSpan(span, start, end, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+      }
+    }
+  }
+
   private fun onShowCaptionOverlay(caption: TextView, largeCaption: TextView, largeCaptionOverlay: View) {
     sharedViewModel.setIsChildScrolling(true)
 
     caption.visible = false
     largeCaption.visible = true
     largeCaptionOverlay.visible = true
-    largeCaption.movementMethod = ScrollingMovementMethod()
+    largeCaption.movementMethod = LinkMovementMethod.getInstance()
     largeCaption.scrollY = 0
     largeCaption.setOnClickListener {
       onHideCaptionOverlay(caption, largeCaption, largeCaptionOverlay)
@@ -1273,6 +1298,8 @@ class StoryViewerPageFragment :
     private val CHARACTERS_PER_SECOND = 15L
     private val DEFAULT_DURATION = TimeUnit.SECONDS.toMillis(5)
     private val ONBOARDING_DURATION = TimeUnit.SECONDS.toMillis(10)
+    private const val SMALL_CAPTION_TEXT_MAX_LENGTH = 280
+    private const val CAPTION_LINK_PATTERN = Linkify.WEB_URLS or Linkify.EMAIL_ADDRESSES or Linkify.PHONE_NUMBERS
 
     private const val ARGS = "args"
 
diff --git a/app/src/main/res/layout/stories_viewer_fragment_page.xml b/app/src/main/res/layout/stories_viewer_fragment_page.xml
index 0ab97505a4..df867b3ae7 100644
--- a/app/src/main/res/layout/stories_viewer_fragment_page.xml
+++ b/app/src/main/res/layout/stories_viewer_fragment_page.xml
@@ -138,24 +138,19 @@
 
     <FrameLayout
         android:id="@+id/story_caption_container"
-        android:layout_width="0dp"
+        android:layout_width="wrap_content"
         android:layout_height="95sp"
         android:layout_marginBottom="12dp"
-        app:layout_constrainedHeight="true"
         app:layout_constraintBottom_toTopOf="@id/story_from_barrier"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="1">
+        app:layout_constraintStart_toStartOf="parent">
 
         <org.thoughtcrime.securesms.components.emoji.EmojiTextView
             android:id="@+id/story_caption"
-            android:layout_width="match_parent"
-            android:layout_height="95sp"
-            android:layout_marginStart="16dp"
-            android:layout_marginEnd="16dp"
-            android:layout_marginBottom="24dp"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginHorizontal="16dp"
             android:gravity="bottom"
+            android:layout_gravity="bottom"
             android:textAppearance="@style/Signal.Text.BodyLarge"
             android:textColor="@color/core_white"
             app:emoji_renderSpoilers="true"