Query custom emojis by current url prefix in order to contemplate multiple servers

app/src/main/java/chat/rocket/android/main/presentation/MainPresenter.kt

@@ -125,8 +125,13 @@ class MainPresenter @Inject constructor(
         }
     }
 
+    /**
+     * Load all emojis for the current server. Simple emojis are always the same for every server,
+     * but custom emojis vary according to the its url.
+     */
     fun loadEmojis() {
         launchUI(strategy) {
+            EmojiRepository.setCurrentServerUrl(currentServer)
             val customEmojiList = mutableListOf<Emoji>()
             try {
                 for (customEmoji in retryIO("getCustomEmojis()") { client.getCustomEmojis() }) {

emoji/src/main/java/chat/rocket/android/emoji/EmojiDao.kt

@@ -25,6 +25,9 @@ interface EmojiDao {
     @Query("SELECT * FROM emoji WHERE UPPER(category)=UPPER(:category)")
     fun loadEmojisByCategory(category: String): List<Emoji>
 
+    @Query("SELECT * FROM emoji WHERE UPPER(category)=UPPER(:category) AND url LIKE :url")
+    fun loadEmojisByCategoryAndUrl(category: String, url: String): List<Emoji>
+
     @Insert(onConflict = IGNORE)
     fun insertEmoji(emoji: Emoji)
 

emoji/src/main/java/chat/rocket/android/emoji/EmojiRepository.kt

@@ -31,6 +31,15 @@ object EmojiRepository {
     private lateinit var preferences: SharedPreferences
     internal lateinit var cachedTypeface: Typeface
     private lateinit var db: EmojiDatabase
+    private lateinit var currentServerUrl: String
+
+    fun setCurrentServerUrl(url: String) {
+        currentServerUrl = url
+    }
+
+    fun getCurrentServerUrl(): String? {
+        return if (::currentServerUrl.isInitialized) currentServerUrl else null
+    }
 
     fun load(context: Context, customEmojis: List<Emoji> = emptyList(), path: String = "emoji.json") {
         launch(CommonPool) {
@@ -141,6 +150,18 @@ object EmojiRepository {
         }
     }
 
+    internal suspend fun getEmojiSequenceByCategoryAndUrl(category: EmojiCategory, url: String): Sequence<Emoji> {
+        val list = withContext(CommonPool) {
+            db.emojiDao().loadEmojisByCategoryAndUrl(category.name, "$url%")
+        }
+
+        return buildSequence {
+            list.forEach {
+                yield(it)
+            }
+        }
+    }
+
     /**
      * Get the emoji given by a specified shortname. Returns null if can't find any.
      *

emoji/src/main/java/chat/rocket/android/emoji/internal/EmojiPagerAdapter.kt

@@ -45,8 +45,15 @@ internal class EmojiPagerAdapter(private val listener: EmojiKeyboardListener) :
 
             container.addView(view)
             launch(UI) {
+                val currentServerUrl = EmojiRepository.getCurrentServerUrl()
                 val emojis = if (category != EmojiCategory.RECENTS) {
-                    EmojiRepository.getEmojiSequenceByCategory(category)
+                    if (category == EmojiCategory.CUSTOM) {
+                        currentServerUrl?.let { url ->
+                            EmojiRepository.getEmojiSequenceByCategoryAndUrl(category, url)
+                        } ?: emptySequence()
+                    } else {
+                        EmojiRepository.getEmojiSequenceByCategory(category)
+                    }
                 } else {
                     sequenceOf(*EmojiRepository.getRecents().toTypedArray())
                 }