Implement author/uploader display in Media Details

Co-authored-by: nicolas-raoul <99590+nicolas-raoul@users.noreply.github.com>

app/src/main/java/fr/free/nrw/commons/media/MediaDetailFragment.kt

@@ -320,11 +320,8 @@ class MediaDetailFragment : CommonsDaggerSupportFragment(), CategoryEditHelper.C
 
         binding.seeMore.setUnderlinedText(R.string.nominated_see_more)
 
-        if (isCategoryImage) {
-            binding.authorLinearLayout.visibility = View.VISIBLE
-        } else {
-            binding.authorLinearLayout.visibility = View.GONE
-        }
+        // Author/uploader visibility will be determined in setTextFields based on available data
+        // This initial setting for category images is overridden in setTextFields()
 
         if (!sessionManager.isUserLoggedIn) {
             binding.categoryEditButton.visibility = View.GONE
@@ -814,10 +811,27 @@ class MediaDetailFragment : CommonsDaggerSupportFragment(), CategoryEditHelper.C
         categoryNames.clear()
         categoryNames.addAll(media.categories!!)
 
-        if (media.author == null || media.author == "") {
+        // Show author or uploader information for licensing compliance
+        val authorName = media.author
+        val uploaderName = media.user
+        
+        when {
+            !authorName.isNullOrEmpty() -> {
+                // Show author if available
+                binding.mediaDetailAuthorLabel.text = getString(R.string.media_detail_author)
+                binding.mediaDetailAuthor.text = authorName
+                binding.authorLinearLayout.visibility = View.VISIBLE
+            }
+            !uploaderName.isNullOrEmpty() -> {
+                // Show uploader as fallback
+                binding.mediaDetailAuthorLabel.text = getString(R.string.media_detail_uploader)
+                binding.mediaDetailAuthor.text = uploaderName
+                binding.authorLinearLayout.visibility = View.VISIBLE
+            }
+            else -> {
+                // Hide if neither author nor uploader is available
                 binding.authorLinearLayout.visibility = View.GONE
-        } else {
-            binding.mediaDetailAuthor.text = media.author
+            }
         }
     }
 

app/src/main/res/layout/fragment_media_detail.xml

@@ -133,6 +133,7 @@
                   android:orientation="horizontal">
 
                     <TextView
+                      android:id="@+id/mediaDetailAuthorLabel"
                       style="@style/MediaDetailTextLabelGeneric"
                       android:layout_width="@dimen/widget_margin"
                       android:layout_height="match_parent"

app/src/main/res/values/strings.xml

@@ -211,6 +211,7 @@
   <string name="media_detail_description">Description</string>
   <string name="media_detail_discussion">Discussion</string>
   <string name="media_detail_author">Author</string>
+  <string name="media_detail_uploader">Uploader</string>
   <string name="media_detail_uploaded_date">Uploaded date</string>
   <string name="media_detail_license">License</string>
   <string name="media_detail_coordinates">Coordinates</string>