refactor: cleaned code

mobile/build.gradle.kts

@@ -23,7 +23,7 @@ android {
         minSdk = 30
         targetSdk = 36
         versionCode = generateVersionCode()
-        versionName = "4.3.0"
+        versionName = "4.3.1"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
@@ -81,4 +81,5 @@ dependencies {
     implementation("io.ktor:ktor-client-core:3.5.0")
     implementation("io.ktor:ktor-client-cio:3.5.0")
     implementation("androidx.compose.material:material-icons-extended")
+    implementation("sh.calvin.reorderable:reorderable:2.4.3")
 }

mobile/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.INTERNET" />
 
@@ -10,6 +11,14 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.OmniCards">
+        <activity
+            android:name="com.journeyapps.barcodescanner.CaptureActivity"
+            android:screenOrientation="portrait"
+            android:stateNotNeeded="true"
+            android:theme="@style/zxing_CaptureTheme"
+            android:windowSoftInputMode="stateAlwaysHidden"
+            tools:replace="android:screenOrientation" />
+
         <activity
             android:name=".SelectIconActivity"
             android:exported="false"

mobile/src/main/java/ru/omni_devel/cards/CardInfo.kt

@@ -15,5 +15,6 @@ class CardInfo (
     val codeType: BarcodeFormat,
     val codeValue: String,
     val color: String?,
-    val icon: String?
+    val icon: String?,
+    val position: Int
 ) {}

mobile/src/main/java/ru/omni_devel/cards/DbHelper.kt

@@ -2,15 +2,17 @@ package ru.omni_devel.cards
 
 import android.content.ContentValues
 import android.content.Context
+import android.database.Cursor
 import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteOpenHelper
 import androidx.core.database.getStringOrNull
+import androidx.core.database.sqlite.transaction
 import com.google.zxing.BarcodeFormat
 
-class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?) : SQLiteOpenHelper(context, "omni_cards", factory, 6) {
+class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?) : SQLiteOpenHelper(context, "omni_cards", factory, 8) {
     override fun onCreate(db: SQLiteDatabase?) {
         db!!.execSQL(
-            "CREATE TABLE IF NOT EXISTS cards (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, codeType TEXT, codeValue TEXT, color TEXT, icon TEXT)"
+            "CREATE TABLE IF NOT EXISTS cards (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, codeType TEXT, codeValue TEXT, color TEXT, icon TEXT, position DEFAULT 0)"
         )
     }
 
@@ -42,6 +44,32 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
         if (oldVersion < 6) {
             db!!.execSQL("ALTER TABLE cards ADD COLUMN icon TEXT")
         }
+
+        if (oldVersion < 7) {
+            db!!.execSQL("ALTER TABLE cards ADD COLUMN position INTEGER DEFAULT 0")
+            db.execSQL("UPDATE cards SET position = id")
+        }
+    }
+
+    private fun readCard(cursor: Cursor): CardInfo {
+        return CardInfo(
+            id = cursor.getInt(cursor.getColumnIndexOrThrow("id")),
+            name = cursor.getString(cursor.getColumnIndexOrThrow("name")),
+            codeType = BarcodeFormat.valueOf(cursor.getString(cursor.getColumnIndexOrThrow("codeType"))),
+            codeValue = cursor.getString(cursor.getColumnIndexOrThrow("codeValue")),
+            color = cursor.getString(cursor.getColumnIndexOrThrow("color")),
+            icon = cursor.getStringOrNull(cursor.getColumnIndexOrThrow("icon")),
+            position = cursor.getInt(cursor.getColumnIndexOrThrow("position"))
+        )
+    }
+
+    private fun nextPosition(db: SQLiteDatabase): Int {
+        val cursor = db.rawQuery("SELECT COALESCE(MAX(position), -1) + 1 FROM cards", null)
+        cursor.moveToFirst()
+        val next = cursor.getInt(0)
+        cursor.close()
+
+        return next
     }
 
     fun addCard(name: String, codeValue: String, codeType: BarcodeFormat, color: String?, icon: String?) {
@@ -54,6 +82,7 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
         values.put("codeType", codeType.name)
         values.put("color", color)
         values.put("icon", icon)
+        values.put("position", nextPosition(db))
 
         db.insert("cards", null, values)
 
@@ -79,18 +108,11 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
     fun getCards(): List<CardInfo> {
         val db = this.readableDatabase
 
-        val cursor = db.rawQuery("SELECT * FROM cards ORDER BY id ASC", null)
+        val cursor = db.rawQuery("SELECT * FROM cards ORDER BY position ASC", null)
         val cards = mutableListOf<CardInfo>()
 
         while (cursor.moveToNext()) {
-            cards.add(CardInfo(
-                id = cursor.getInt(cursor.getColumnIndexOrThrow("id")),
-                name = cursor.getString(cursor.getColumnIndexOrThrow("name")),
-                codeType = BarcodeFormat.valueOf(cursor.getString(cursor.getColumnIndexOrThrow("codeType"))),
-                codeValue = cursor.getString(cursor.getColumnIndexOrThrow("codeValue")),
-                color = cursor.getString(cursor.getColumnIndexOrThrow("color")),
-                icon = cursor.getStringOrNull(cursor.getColumnIndexOrThrow("icon"))
-            ))
+            cards.add(readCard(cursor))
         }
 
         cursor.close()
@@ -111,14 +133,7 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
             return null
         }
 
-        val cardInfo = CardInfo(
-            id = cursor.getInt(cursor.getColumnIndexOrThrow("id")),
-            name = cursor.getString(cursor.getColumnIndexOrThrow("name")),
-            codeType = BarcodeFormat.valueOf(cursor.getString(cursor.getColumnIndexOrThrow("codeType"))),
-            codeValue = cursor.getString(cursor.getColumnIndexOrThrow("codeValue")),
-            color = cursor.getString(cursor.getColumnIndexOrThrow("color")),
-            icon = cursor.getStringOrNull(cursor.getColumnIndexOrThrow("icon"))
-        )
+        val cardInfo = readCard(cursor)
 
         cursor.close()
         db.close()
@@ -143,19 +158,38 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
     fun addCards(cards: List<CardInfo>) {
         val db = this.writableDatabase
 
-        for (card in cards) {
-            val values = ContentValues()
+        db.use { db ->
+            db.transaction {
+                for (card in cards) {
+                    val values = ContentValues()
 
-            values.put("id", card.id)
-            values.put("name", card.name)
-            values.put("codeValue", card.codeValue)
-            values.put("codeType", card.codeType.name)
-            values.put("color", card.color)
-            values.put("icon", card.icon)
+                    values.put("id", card.id)
+                    values.put("name", card.name)
+                    values.put("codeValue", card.codeValue)
+                    values.put("codeType", card.codeType.name)
+                    values.put("color", card.color)
+                    values.put("icon", card.icon)
+                    values.put("position", nextPosition(db))
 
-            db.insert("cards", null, values)
+                    db.insert("cards", null, values)
+                }
+            }
         }
+    }
 
-        db.close()
+    fun updatePositions(orderedIds: List<Int>) {
+        val db = this.writableDatabase
+
+        db.use { db ->
+            db.transaction {
+                orderedIds.forEachIndexed { index, id ->
+                    val values = ContentValues()
+
+                    values.put("position", index)
+
+                    db.update("cards", values, "id = ?", arrayOf(id.toString()))
+                }
+            }
+        }
     }
 }

mobile/src/main/java/ru/omni_devel/cards/EditCardActivity.kt

@@ -46,6 +46,7 @@ import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
+import androidx.core.graphics.toColorInt
 import com.google.zxing.BarcodeFormat
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanOptions
@@ -96,6 +97,11 @@ fun CardEditable(
 
     val fieldModifier = Modifier.fillMaxWidth()
 
+    val cardColor = if (color == null)
+        MaterialTheme.colorScheme.primary
+    else
+        Color(color.toColorInt())
+
     val scanLauncher = rememberLauncherForActivityResult(
         contract = ScanContract()
     ) { result ->
@@ -267,7 +273,7 @@ fun CardEditable(
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.spacedBy(8.dp)
         ) {
-            CardIcon(if (icon == null) null else base64ToImageBitmap(icon), MaterialTheme.colorScheme.primary)
+            CardIcon(if (icon == null) null else base64ToImageBitmap(icon), cardColor)
 
             Text(stringResource(R.string.do_select_icon))
         }

mobile/src/main/java/ru/omni_devel/cards/Elements.kt

@@ -40,6 +40,7 @@ import androidx.compose.material3.Icon
 import androidx.compose.material.icons.outlined.Add
 import androidx.compose.material.icons.outlined.QrCode
 import androidx.compose.material.icons.outlined.DensityMedium
+import androidx.compose.material.icons.outlined.DragHandle
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ExtendedFloatingActionButton
 import androidx.compose.material3.FloatingActionButton
@@ -185,7 +186,7 @@ fun TopBar(
 }
 
 @Composable
-fun CardButton(cardInfo: CardInfo, onDeleteCard: (Int) -> Unit) {
+fun CardButton(cardInfo: CardInfo, onDeleteCard: (Int) -> Unit, reorderIcon: (@Composable () -> Unit)? = null) {
     val context = LocalContext.current
 
     var menuExpanded by remember { mutableStateOf(false) }
@@ -222,20 +223,30 @@ fun CardButton(cardInfo: CardInfo, onDeleteCard: (Int) -> Unit) {
                     .background(Color.Transparent)
                     .padding(horizontal = 8.dp),
                 verticalAlignment = Alignment.CenterVertically,
-                horizontalArrangement = Arrangement.spacedBy(8.dp)
+                horizontalArrangement = Arrangement.SpaceBetween
             ) {
-                CardIcon(
-                    if (cardInfo.icon == null) null else base64ToImageBitmap(cardInfo.icon),
-                    cardColor = cardColor
-                )
+                Row(
+                    modifier = Modifier.weight(1f),
+                    verticalAlignment = Alignment.CenterVertically,
+                    horizontalArrangement = Arrangement.spacedBy(8.dp)
+                ) {
+                    CardIcon(
+                        if (cardInfo.icon == null) null else base64ToImageBitmap(cardInfo.icon),
+                        cardColor = cardColor
+                    )
 
-                Text(
-                    cardInfo.name,
-                    fontSize = 16.sp,
-                    color = MaterialTheme.colorScheme.onPrimaryContainer,
-                    modifier = Modifier.fillMaxWidth(),
-                    textAlign = TextAlign.Start
-                )
+                    Text(
+                        cardInfo.name,
+                        fontSize = 16.sp,
+                        color = MaterialTheme.colorScheme.onPrimaryContainer,
+                        modifier = Modifier.fillMaxWidth(),
+                        textAlign = TextAlign.Start
+                    )
+                }
+
+                if (reorderIcon != null) {
+                    reorderIcon()
+                }
             }
         }
 

mobile/src/main/java/ru/omni_devel/cards/MainActivity.kt

@@ -9,23 +9,26 @@ import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.expandVertically
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
-import androidx.compose.animation.scaleIn
-import androidx.compose.animation.scaleOut
 import androidx.compose.animation.shrinkVertically
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.Add
 import androidx.compose.material.icons.outlined.Sync
 import androidx.compose.material.icons.outlined.Backup
 import androidx.compose.material.icons.outlined.Code
+import androidx.compose.material.icons.outlined.DragHandle
 import androidx.compose.material.icons.outlined.Search
 import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
@@ -37,12 +40,15 @@ import androidx.compose.ui.unit.dp
 import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.saveable.rememberSaveable
-import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshots.SnapshotStateList
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.platform.LocalUriHandler
 import androidx.compose.ui.res.stringResource
-import kotlinx.serialization.json.Json
 import ru.omni_devel.cards.ui.theme.OmniCardsTheme
+import sh.calvin.reorderable.ReorderableItem
+import sh.calvin.reorderable.rememberReorderableLazyListState
 
 class MainActivity : ComponentActivity() {
     private lateinit var db: DbHelper
@@ -60,13 +66,22 @@ class MainActivity : ComponentActivity() {
                 Scaffold(
                     modifier = Modifier.fillMaxSize()
                 ) { innerPadding ->
-                    MainPage(innerPadding, cards, onDeleteCard = { cardId ->
-                        db.removeCard(cardId)
-                        cards.removeIf { it.id == cardId }
-                        syncCardsWithWatch(this, db.getCards())
-                    }, getDbFun = {
-                        return@MainPage db
-                    })
+                    MainPage(
+                        innerPadding,
+                        cards,
+                        onDeleteCard = { cardId ->
+                            db.removeCard(cardId)
+                            cards.removeIf { it.id == cardId }
+                            syncCardsWithWatch(this, db.getCards())
+                       },
+                        onReorderCards = {
+                            db.updatePositions(it)
+                            syncCardsWithWatch(this, db.getCards())
+                        },
+                        getDbFun = {
+                            return@MainPage db
+                        }
+                    )
                 }
             }
         }
@@ -85,8 +100,9 @@ class MainActivity : ComponentActivity() {
 @Composable
 fun MainPage(
     innerPadding: PaddingValues,
-    cards: List<CardInfo>,
+    cards: SnapshotStateList<CardInfo>,
     onDeleteCard: (Int) -> Unit,
+    onReorderCards: (List<Int>) -> Unit,
     getDbFun: () -> DbHelper
 ) {
     val context = LocalContext.current
@@ -95,6 +111,19 @@ fun MainPage(
     var searchQuery by rememberSaveable { mutableStateOf("") }
     var isSearchFieldShowed by rememberSaveable { mutableStateOf(false) }
 
+    val lazyListState = rememberLazyListState()
+    val reorderableLazyListState = rememberReorderableLazyListState(lazyListState) { from, to ->
+        val fromId = from.key as? Int ?: return@rememberReorderableLazyListState
+        val toId = to.key as? Int ?: return@rememberReorderableLazyListState
+
+        val fromIndex = cards.indexOfFirst { it.id == fromId }
+        val toIndex = cards.indexOfFirst { it.id == toId }
+
+        if (fromIndex != -1 && toIndex != -1) {
+            cards.add(toIndex, cards.removeAt(fromIndex))
+        }
+    }
+
     Box(
         modifier = Modifier.fillMaxSize()
     ) {
@@ -151,14 +180,11 @@ fun MainPage(
                     cardNameCleaned = cardNameCleaned.replace(from, to)
                 }
 
-                if (cardNameCleaned.contains(queryCleaned)) {
-                    return@filter true
-                }
-
-                return@filter false
+                return@filter cardNameCleaned.contains(queryCleaned)
             }
 
             LazyColumn(
+                state = lazyListState,
                 verticalArrangement = Arrangement.spacedBy(8.dp)
             ) {
                 item {
@@ -192,8 +218,40 @@ fun MainPage(
                     }
                 } else {
                     for (card in searchResults) {
-                        item {
-                            CardButton(card, onDeleteCard)
+                        item(key = card.id) {
+                            ReorderableItem(reorderableLazyListState, key = card.id) { isDragging ->
+                                Row(
+                                    verticalAlignment = Alignment.CenterVertically,
+                                    modifier = Modifier
+                                        .fillMaxWidth()
+                                        .alpha(if (isDragging) 0.7f else 1f)
+                                ) {
+                                    var reorderIcon: (@Composable () -> Unit)? = null
+
+                                    if (queryCleaned.isEmpty()) {
+                                        reorderIcon = {
+                                            Icon(
+                                                imageVector = Icons.Outlined.DragHandle,
+                                                contentDescription = null,
+                                                tint = MaterialTheme.colorScheme.onPrimaryContainer,
+                                                modifier = Modifier
+                                                    .draggableHandle(
+                                                        onDragStopped = {
+                                                            onReorderCards(cards.map { it.id })
+                                                        }
+                                                    )
+                                                    .padding(8.dp)
+                                            )
+                                        }
+                                    }
+
+                                    CardButton(
+                                        card,
+                                        onDeleteCard,
+                                        reorderIcon
+                                    )
+                                }
+                            }
                         }
                     }
                 }

wear/src/main/java/ru/omni_devel/cards/presentation/CardInfo.kt

@@ -10,5 +10,6 @@ class CardInfo (
     val codeType: BarcodeFormat,
     val codeValue: String,
     val color: String?,
-    val icon: String?
+    val icon: String?,
+    val position: Int
 )

wear/src/main/java/ru/omni_devel/cards/presentation/DbHelper.kt

@@ -2,12 +2,14 @@ package ru.omni_devel.cards.presentation
 
 import android.content.ContentValues
 import android.content.Context
+import android.database.Cursor
 import android.database.sqlite.SQLiteDatabase
 import android.database.sqlite.SQLiteOpenHelper
 import androidx.core.database.getStringOrNull
+import androidx.core.database.sqlite.transaction
 import com.google.zxing.BarcodeFormat
 
-class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?) : SQLiteOpenHelper(context, "omni_cards", factory, 5) {
+class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?) : SQLiteOpenHelper(context, "omni_cards", factory, 6) {
     override fun onCreate(db: SQLiteDatabase?) {
         db!!.execSQL(
             "CREATE TABLE IF NOT EXISTS cards (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, codeType TEXT, codeValue TEXT, color TEXT, icon TEXT)"
@@ -37,6 +39,23 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
         if (oldVersion < 5) {
             db!!.execSQL("ALTER TABLE cards ADD COLUMN icon TEXT")
         }
+
+        if (oldVersion < 6) {
+            db!!.execSQL("ALTER TABLE cards ADD COLUMN position INTEGER DEFAULT 0")
+            db.execSQL("UPDATE cards SET position = id")
+        }
+    }
+
+    private fun readCard(cursor: Cursor): CardInfo {
+        return CardInfo(
+            id = cursor.getInt(cursor.getColumnIndexOrThrow("id")),
+            name = cursor.getString(cursor.getColumnIndexOrThrow("name")),
+            codeType = BarcodeFormat.valueOf(cursor.getString(cursor.getColumnIndexOrThrow("codeType"))),
+            codeValue = cursor.getString(cursor.getColumnIndexOrThrow("codeValue")),
+            color = cursor.getString(cursor.getColumnIndexOrThrow("color")),
+            icon = cursor.getStringOrNull(cursor.getColumnIndexOrThrow("icon")),
+            position = cursor.getInt(cursor.getColumnIndexOrThrow("position"))
+        )
     }
 
     fun clearDatabase() {
@@ -50,37 +69,33 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
     fun addCards(cards: List<CardInfo>) {
         val db = this.writableDatabase
 
-        for (card in cards) {
-            val values = ContentValues()
+        db.use { db ->
+            db.transaction {
+                for (card in cards) {
+                    val values = ContentValues()
 
-            values.put("id", card.id)
-            values.put("name", card.name)
-            values.put("codeValue", card.codeValue)
-            values.put("codeType", card.codeType.name)
-            values.put("color", card.color)
-            values.put("icon", card.icon)
+                    values.put("id", card.id)
+                    values.put("name", card.name)
+                    values.put("codeValue", card.codeValue)
+                    values.put("codeType", card.codeType.name)
+                    values.put("color", card.color)
+                    values.put("icon", card.icon)
+                    values.put("position", card.position)
 
-            db.insert("cards", null, values)
+                    db.insert("cards", null, values)
+                }
+            }
         }
-
-        db.close()
     }
 
     fun getCards(): List<CardInfo> {
         val db = this.readableDatabase
 
-        val cursor = db.rawQuery("SELECT * FROM cards", null)
+        val cursor = db.rawQuery("SELECT * FROM cards ORDER BY position", null)
         val cards = mutableListOf<CardInfo>()
 
         while (cursor.moveToNext()) {
-            cards.add(CardInfo(
-                id = cursor.getInt(cursor.getColumnIndexOrThrow("id")),
-                name = cursor.getString(cursor.getColumnIndexOrThrow("name")),
-                codeType = BarcodeFormat.valueOf(cursor.getString(cursor.getColumnIndexOrThrow("codeType"))),
-                codeValue = cursor.getString(cursor.getColumnIndexOrThrow("codeValue")),
-                color = cursor.getString(cursor.getColumnIndexOrThrow("color")),
-                icon = cursor.getStringOrNull(cursor.getColumnIndexOrThrow("icon"))
-            ))
+            cards.add(readCard(cursor))
         }
 
         cursor.close()
@@ -101,14 +116,7 @@ class DbHelper(val context: Context, val factory: SQLiteDatabase.CursorFactory?)
             return null
         }
 
-        val cardInfo = CardInfo(
-            id = cursor.getInt(cursor.getColumnIndexOrThrow("id")),
-            name = cursor.getString(cursor.getColumnIndexOrThrow("name")),
-            codeType = BarcodeFormat.valueOf(cursor.getString(cursor.getColumnIndexOrThrow("codeType"))),
-            codeValue = cursor.getString(cursor.getColumnIndexOrThrow("codeValue")),
-            color = cursor.getString(cursor.getColumnIndexOrThrow("color")),
-            icon = cursor.getStringOrNull(cursor.getColumnIndexOrThrow("icon"))
-        )
+        val cardInfo = readCard(cursor)
 
         cursor.close()
         db.close()

wear/src/main/java/ru/omni_devel/cards/presentation/MessagesReciever.kt

@@ -26,6 +26,11 @@ class MessagesReceiver : WearableListenerService() {
                 val json = String(event.data, Charsets.UTF_8)
 
                 val cards = Json.decodeFromString<List<CardInfo>>(json)
+                val oldCards = db.getCards()
+
+                if (cards == oldCards) {
+                    return
+                }
 
                 db.clearDatabase()
                 db.addCards(cards)