Save Emoji data offline on sqlite using Room

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

@@ -137,11 +137,12 @@ class MainPresenter @Inject constructor(
                         category = EmojiCategory.CUSTOM.name,
                         url = "$currentServer/emoji-custom/${customEmoji.name}.${customEmoji.extension}",
                         count = 0,
-                        fitzpatrick = Fitzpatrick.Default,
+                        fitzpatrick = Fitzpatrick.Default.type,
                         keywords = customEmoji.aliases,
                         shortnameAlternates = customEmoji.aliases,
                         siblings = mutableListOf(),
-                        unicode = ""
+                        unicode = "",
+                        default = true
                     ))
                 }
 

emoji/build.gradle

@@ -37,6 +37,8 @@ dependencies {
     implementation libraries.material
     implementation libraries.glide
     kapt libraries.glideProcessor
+    implementation libraries.room
+    kapt libraries.roomProcessor
 }
 
 kotlin {

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

 package chat.rocket.android.emoji
 
+import androidx.room.Entity
+import androidx.room.Ignore
+import androidx.room.PrimaryKey
+
+@Entity
 data class Emoji(
-    val shortname: String,
-    val shortnameAlternates: List<String>,
-    val unicode: String,
-    val keywords: List<String>,
-    val category: String,
-    val count: Int = 0,
-    val siblings: MutableCollection<Emoji> = mutableListOf(),
-    val fitzpatrick: Fitzpatrick = Fitzpatrick.Default,
-    val url: String? = null // Filled for custom emojis
+    @PrimaryKey
+    var shortname: String = "",
+    var shortnameAlternates: List<String> = listOf(),
+    var unicode: String = "",
+    @Ignore val keywords: List<String> = listOf(),
+    var category: String = "",
+    var count: Int = 0,
+    var siblings: List<String> = listOf(),
+    var fitzpatrick: String = Fitzpatrick.Default.type,
+    var url: String? = null, // Filled for custom emojis
+    var default: Boolean = true
 )

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

+package chat.rocket.android.emoji
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy.IGNORE
+import androidx.room.Query
+import androidx.room.Update
+
+@Dao
+interface EmojiDao {
+
+    @Query("SELECT * FROM emoji")
+    fun loadAllEmojis(): List<Emoji>
+
+    @Query("SELECT * FROM emoji WHERE url IS NULL")
+    fun loadSimpleEmojis(): List<Emoji>
+
+    @Query("SELECT * FROM emoji WHERE url IS NOT NULL")
+    fun loadAllCustomEmojis(): List<Emoji>
+
+    @Query("SELECT * FROM emoji WHERE shortname=:shortname")
+    fun loadEmojiByShortname(shortname: String): Emoji?
+
+    @Query("SELECT * FROM emoji WHERE UPPER(category)=UPPER(:category)")
+    fun loadEmojisByCategory(category: String): List<Emoji>
+
+    @Insert(onConflict = IGNORE)
+    fun insertEmoji(emoji: Emoji)
+
+    @Insert(onConflict = IGNORE)
+    fun insertAllEmojis(vararg emojis: Emoji)
+
+    @Update
+    fun updateEmoji(emoji: Emoji)
+
+    @Delete
+    fun deleteEmoji(emoji: Emoji)
+
+    @Query("DELETE FROM emoji")
+    fun deleteAll()
+}

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

@@ -22,6 +22,8 @@ import chat.rocket.android.emoji.internal.EmojiCategory
 import chat.rocket.android.emoji.internal.EmojiPagerAdapter
 import chat.rocket.android.emoji.internal.PREF_EMOJI_SKIN_TONE
 import com.google.android.material.tabs.TabLayout
+import kotlinx.coroutines.experimental.android.UI
+import kotlinx.coroutines.experimental.launch
 
 
 class EmojiKeyboardPopup(context: Context, view: View) : OverKeyboardPopupWindow(context, view) {
@@ -49,9 +51,11 @@ class EmojiKeyboardPopup(context: Context, view: View) : OverKeyboardPopupWindow
     }
 
     override fun onViewCreated(view: View) {
+        launch(UI) {
             setupViewPager()
             setupBottomBar()
         }
+    }
 
     private fun setupBottomBar() {
         searchView.setOnClickListener {
@@ -148,7 +152,7 @@ class EmojiKeyboardPopup(context: Context, view: View) : OverKeyboardPopupWindow
         }
     }
 
-    private fun setupViewPager() {
+    private suspend fun setupViewPager() {
         context.let {
             val callback = when (it) {
                 is EmojiKeyboardListener -> it
@@ -167,6 +171,7 @@ class EmojiKeyboardPopup(context: Context, view: View) : OverKeyboardPopupWindow
                     callback.onEmojiAdded(emoji)
                 }
             })
+
             viewPager.offscreenPageLimit = EmojiCategory.values().size
             viewPager.adapter = adapter
 
@@ -183,6 +188,7 @@ class EmojiKeyboardPopup(context: Context, view: View) : OverKeyboardPopupWindow
             } else {
                 EmojiCategory.RECENTS.ordinal
             }
+
             viewPager.currentItem = currentTab
         }
     }

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

@@ -2,19 +2,14 @@ package chat.rocket.android.emoji
 
 import android.content.Context
 import android.graphics.Bitmap
-import android.graphics.drawable.BitmapDrawable
 import android.text.Spannable
 import android.text.SpannableString
 import android.text.Spanned
 import android.text.style.ImageSpan
 import android.util.Log
 import chat.rocket.android.emoji.internal.GlideApp
-import com.bumptech.glide.Glide
 import com.bumptech.glide.load.engine.DiskCacheStrategy
 import com.bumptech.glide.load.resource.gif.GifDrawable
-import com.bumptech.glide.request.FutureTarget
-import com.bumptech.glide.request.RequestFutureTarget
-import com.bumptech.glide.request.RequestOptions
 import kotlinx.coroutines.experimental.CommonPool
 import kotlinx.coroutines.experimental.Deferred
 import kotlinx.coroutines.experimental.async

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

@@ -14,6 +14,8 @@ import chat.rocket.android.emoji.internal.EmojiCategory
 import chat.rocket.android.emoji.internal.EmojiPagerAdapter
 import chat.rocket.android.emoji.internal.PREF_EMOJI_SKIN_TONE
 import kotlinx.android.synthetic.main.emoji_picker.*
+import kotlinx.coroutines.experimental.android.UI
+import kotlinx.coroutines.experimental.launch
 
 
 class EmojiPickerPopup(context: Context) : Dialog(context) {
@@ -27,9 +29,11 @@ class EmojiPickerPopup(context: Context) : Dialog(context) {
         setContentView(R.layout.emoji_picker)
 
         tabs.setupWithViewPager(pager_categories)
+        launch(UI) {
             setupViewPager()
             setSize()
         }
+    }
 
     private fun setSize() {
         val lp = WindowManager.LayoutParams()
@@ -39,7 +43,7 @@ class EmojiPickerPopup(context: Context) : Dialog(context) {
         window.setLayout(dialogWidth, dialogHeight)
     }
 
-    private fun setupViewPager() {
+    private suspend fun setupViewPager() {
         adapter = EmojiPagerAdapter(object : EmojiKeyboardListener {
             override fun onEmojiAdded(emoji: Emoji) {
                 EmojiRepository.addToRecents(emoji)

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

@@ -5,9 +5,11 @@ import android.content.SharedPreferences
 import android.graphics.Typeface
 import chat.rocket.android.emoji.internal.EmojiCategory
 import chat.rocket.android.emoji.internal.PREF_EMOJI_RECENTS
+import chat.rocket.android.emoji.internal.db.EmojiDatabase
 import com.bumptech.glide.Glide
 import kotlinx.coroutines.experimental.CommonPool
 import kotlinx.coroutines.experimental.launch
+import kotlinx.coroutines.experimental.withContext
 import org.json.JSONArray
 import org.json.JSONObject
 import java.io.BufferedReader
@@ -24,18 +26,20 @@ object EmojiRepository {
     private val FITZPATRICK_REGEX = "(.*)_(tone[0-9]):".toRegex(RegexOption.IGNORE_CASE)
     private val shortNameToUnicode = HashMap<String, String>()
     private val SHORTNAME_PATTERN = Pattern.compile(":([-+\\w]+):")
-    private val ALL_EMOJIS = mutableListOf<Emoji>()
-    private var customEmojis: List<Emoji> = emptyList()
+    private var customEmojis = listOf<Emoji>()
     private lateinit var preferences: SharedPreferences
     internal lateinit var cachedTypeface: Typeface
+    private lateinit var db: EmojiDatabase
 
     fun load(context: Context, customEmojis: List<Emoji> = emptyList(), path: String = "emoji.json") {
         launch(CommonPool) {
-            cachedTypeface = Typeface.createFromAsset(context.assets, "fonts/emojione-android.ttf")
             this@EmojiRepository.customEmojis = customEmojis
+            val allEmojis = mutableListOf<Emoji>()
+            db = EmojiDatabase.getInstance(context)
+            cachedTypeface = Typeface.createFromAsset(context.assets, "fonts/emojione-android.ttf")
             preferences = context.getSharedPreferences("emoji", Context.MODE_PRIVATE)
-            ALL_EMOJIS.clear()
             val stream = context.assets.open(path)
+            // Load emojis from emojione ttf file temporarily here. We still need to work on them.
             val emojis = loadEmojis(stream).also {
                 it.addAll(customEmojis)
             }.toList()
@@ -43,9 +47,11 @@ object EmojiRepository {
             for (emoji in emojis) {
                 val unicodeIntList = mutableListOf<Int>()
 
-                // If empty it's a custom emoji.
+                emoji.category = emoji.category.toUpperCase()
+
+                // If unicode is empty it's a custom emoji, just add it.
                 if (emoji.unicode.isEmpty()) {
-                    ALL_EMOJIS.add(emoji)
+                    allEmojis.add(emoji)
                     continue
                 }
 
@@ -59,31 +65,38 @@ object EmojiRepository {
                         unicodeIntList.add(value)
                     }
                 }
+
                 val unicodeIntArray = unicodeIntList.toIntArray()
                 val unicode = String(unicodeIntArray, 0, unicodeIntArray.size)
                 val emojiWithUnicode = emoji.copy(unicode = unicode)
+
                 if (hasFitzpatrick(emoji.shortname)) {
                     val matchResult = FITZPATRICK_REGEX.find(emoji.shortname)
                     val prefix = matchResult!!.groupValues[1] + ":"
                     val fitzpatrick = Fitzpatrick.valueOf(matchResult.groupValues[2])
-                    val defaultEmoji = ALL_EMOJIS.firstOrNull { it.shortname == prefix }
-                    val emojiWithFitzpatrick = emojiWithUnicode.copy(fitzpatrick = fitzpatrick)
+                    val defaultEmoji = allEmojis.firstOrNull { it.shortname == prefix }
+                    val emojiWithFitzpatrick = emojiWithUnicode.copy(fitzpatrick = fitzpatrick.type)
+
                     if (defaultEmoji != null) {
-                        defaultEmoji.siblings.add(emojiWithFitzpatrick)
+                        emojiWithFitzpatrick.default = false
+                        defaultEmoji.siblings.toMutableList().add(emoji.shortname)
                     } else {
                         // This emoji doesn't have a default tone, ie. :man_in_business_suit_levitating_tone1:
                         // In this case, the default emoji becomes the first toned one.
-                        ALL_EMOJIS.add(emojiWithFitzpatrick)
+                        allEmojis.add(emojiWithFitzpatrick)
                     }
                 } else {
-                    ALL_EMOJIS.add(emojiWithUnicode)
+                    allEmojis.add(emojiWithUnicode)
                 }
+
                 shortNameToUnicode.apply {
                     put(emoji.shortname, unicode)
                     emoji.shortnameAlternates.forEach { alternate -> put(alternate, unicode) }
                 }
             }
 
+            saveEmojisToDatabase(allEmojis.toList())
+
             val density = context.resources.displayMetrics.density
             val px = (32 * density).toInt()
 
@@ -96,6 +109,12 @@ object EmojiRepository {
         }
     }
 
+    private suspend fun saveEmojisToDatabase(emojis: List<Emoji>) {
+        withContext(CommonPool) {
+            db.emojiDao().insertAllEmojis(*emojis.toTypedArray())
+        }
+    }
+
     private fun hasFitzpatrick(shortname: String): Boolean {
         return FITZPATRICK_REGEX matches shortname
     }
@@ -105,21 +124,15 @@ object EmojiRepository {
      *
      * @return All emojis for all categories.
      */
-    internal fun getAll() = ALL_EMOJIS
+    internal suspend fun getAll(): List<Emoji> = withContext(CommonPool) {
+        return@withContext db.emojiDao().loadAllEmojis()
+    }
 
-    /**
-     * Get all emojis for a given category.
-     *
-     * @param category Emoji category such as: PEOPLE, NATURE, ETC
-     *
-     * @return All emoji from specified category
-     */
-    internal fun getEmojisByCategory(category: EmojiCategory): List<Emoji> {
-        return ALL_EMOJIS.filter { it.category.toLowerCase() == category.name.toLowerCase() }
+    internal suspend fun getEmojiSequenceByCategory(category: EmojiCategory): Sequence<Emoji> {
+        val list = withContext(CommonPool) {
+            db.emojiDao().loadEmojisByCategory(category.name.toLowerCase())
         }
 
-    internal fun getEmojiSequenceByCategory(category: EmojiCategory): Sequence<Emoji> {
-        val list = ALL_EMOJIS.filter { it.category.toLowerCase() == category.name.toLowerCase() }
         return buildSequence {
             list.forEach {
                 yield(it)
@@ -134,7 +147,9 @@ object EmojiRepository {
      *
      * @return Emoji given by shortname or null
      */
-    internal fun getEmojiByShortname(shortname: String) = ALL_EMOJIS.firstOrNull { it.shortname == shortname }
+    private suspend fun getEmojiByShortname(shortname: String): Emoji? = withContext(CommonPool) {
+        return@withContext db.emojiDao().loadEmojiByShortname(shortname)
+    }
 
     /**
      * Add an emoji to the Recents category.
@@ -151,6 +166,14 @@ object EmojiRepository {
         preferences.edit().putString(PREF_EMOJI_RECENTS, recentsJson.toString()).apply()
     }
 
+    internal suspend fun getCustomEmojisAsync(): List<Emoji> {
+        return withContext(CommonPool) {
+            db.emojiDao().loadAllCustomEmojis().also {
+                this.customEmojis = it
+            }
+        }
+    }
+
     internal fun getCustomEmojis(): List<Emoji> = customEmojis
 
     /**
@@ -158,19 +181,22 @@ object EmojiRepository {
      *
      * @return All recent emojis ordered by usage.
      */
-    internal fun getRecents(): List<Emoji> {
+    internal suspend fun getRecents(): List<Emoji> {
         val list = mutableListOf<Emoji>()
         val recentsJson = JSONObject(preferences.getString(PREF_EMOJI_RECENTS, "{}"))
-        for (shortname in recentsJson.keys()) {
-            val emoji = getEmojiByShortname(shortname)
-            emoji?.let {
-                val useCount = recentsJson.getInt(it.shortname)
-                list.add(it.copy(count = useCount))
-            }
-        }
-        list.sortWith(Comparator { o1, o2 ->
-            o2.count - o1.count
-        })
+
+//        for (shortname in recentsJson.keys()) {
+//            val emoji = getEmojiByShortname(shortname)
+//            emoji?.let {
+//                val useCount = recentsJson.getInt(it.shortname)
+//                list.add(it.copy(count = useCount))
+//            }
+//        }
+//
+//        list.sortWith(Comparator { o1, o2 ->
+//            o2.count - o1.count
+//        })
+
         return list
     }
 

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

@@ -53,17 +53,21 @@ internal class EmojiPagerAdapter(private val listener: EmojiKeyboardListener) :
                 } else {
                     sequenceOf(*EmojiRepository.getRecents().toTypedArray())
                 }
+
                 val recentEmojiSize = EmojiRepository.getRecents().size
                 text_no_recent_emoji.isVisible = category == EmojiCategory.RECENTS && recentEmojiSize == 0
+
                 if (adapters[category] == null) {
                     val adapter = EmojiAdapter(listener = listener)
                     emoji_recycler_view.adapter = adapter
                     adapters[category] = adapter
                     adapter.addEmojisFromSequence(emojis)
                 }
+
                 adapters[category]!!.setFitzpatrick(fitzpatrick)
             }
         }
+
         return view
     }
 
@@ -126,7 +130,13 @@ internal class EmojiPagerAdapter(private val listener: EmojiKeyboardListener) :
         override fun onBindViewHolder(holder: EmojiRowViewHolder, position: Int) {
             val emoji = emojis[position]
             holder.bind(
-                emoji.siblings.find { it.fitzpatrick == fitzpatrick } ?: emoji
+                emoji.siblings.find {
+                    it.endsWith(fitzpatrick.type)
+                }?.let { shortname ->
+                    emojis.firstOrNull {
+                        it.shortname == shortname
+                    }
+                } ?: emoji
             )
         }
 

emoji/src/main/java/chat/rocket/android/emoji/internal/db/EmojiDatabase.kt

+package chat.rocket.android.emoji.internal.db
+
+import android.content.Context
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverters
+import chat.rocket.android.emoji.Emoji
+import chat.rocket.android.emoji.EmojiDao
+
+@Database(entities = [Emoji::class], version = 1)
+@TypeConverters(StringListConverter::class)
+abstract class EmojiDatabase : RoomDatabase() {
+
+    abstract fun emojiDao(): EmojiDao
+
+    companion object : SingletonHolder<EmojiDatabase, Context>({
+        Room.databaseBuilder(it.applicationContext,
+            EmojiDatabase::class.java, "emoji.db")
+            .fallbackToDestructiveMigration()
+            .build()
+    })
+}
+
+open class SingletonHolder<out T, in A>(creator: (A) -> T) {
+    private var creator: ((A) -> T)? = creator
+    @kotlin.jvm.Volatile
+    private var instance: T? = null
+
+    fun getInstance(arg: A): T {
+        val i = instance
+        if (i != null) {
+            return i
+        }
+
+        return synchronized(this) {
+            val i2 = instance
+            if (i2 != null) {
+                i2
+            } else {
+                val created = creator!!(arg)
+                instance = created
+                creator = null
+                created
+            }
+        }
+    }
+}

emoji/src/main/java/chat/rocket/android/emoji/internal/db/StringListConverter.kt

+package chat.rocket.android.emoji.internal.db
+
+import androidx.room.TypeConverter
+
+internal object StringListConverter {
+
+    @TypeConverter
+    @JvmStatic
+    fun toString(list: List<String>?): String? {
+        return if (list == null) null else list.joinToString(separator = ",")
+    }
+
+    @TypeConverter
+    @JvmStatic
+    fun toStringList(value: String?): List<String>? {
+        return value?.split(",")
+    }
+}