Add fallback destructive migration. Up version to 2.4.0

app/build.gradle

@@ -19,8 +19,8 @@ android {
         applicationId "com.garnegsoft.hubs"
         minSdk 23
         targetSdk 34
-        versionCode 10
-        versionName "2.3.2"
+        versionCode 13
+        versionName "2.4.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {

app/src/main/java/com/garnegsoft/hubs/api/article/offline/OfflineArticle.kt

@@ -0,0 +1,184 @@
+package com.garnegsoft.hubs.api.article.offline
+
+import android.content.Context
+import androidx.room.*
+import androidx.room.migration.Migration
+import kotlinx.coroutines.flow.Flow
+
+
+private const val SNIPPETS_TABLE_NAME = "offline_articles_snippets"
+private const val ARTICLES_TABLE_NAME = "offline_articles"
+private const val DATABASE_NAME = "offline_db"
+
+@Entity(
+	tableName = SNIPPETS_TABLE_NAME,
+	indices = [Index("article_id", unique = true)]
+)
+data class OfflineArticleSnippet(
+
+	@ColumnInfo("article_id")
+	val articleId: Int,
+
+	@ColumnInfo("author_name")
+	val authorName: String?,
+
+	@ColumnInfo("author_avatar_url")
+	val authorAvatarUrl: String?,
+
+	@ColumnInfo("time_published")
+	val timePublished: String,
+
+	val title: String,
+
+	@ColumnInfo("reading_time")
+	val readingTime: Int,
+
+	@ColumnInfo("is_translation")
+	val isTranslation: Boolean,
+
+	@ColumnInfo("text_snippet")
+	val textSnippet: String,
+
+	@ColumnInfo("thumbnail_url")
+	val thumbnailUrl: String?,
+
+	@TypeConverters(HubsConverter::class)
+	val hubs: HubsList,
+
+	@ColumnInfo
+	@PrimaryKey(autoGenerate = true)
+	val id: Int = 0,
+)
+
+@Entity(
+	tableName = ARTICLES_TABLE_NAME,
+)
+data class OfflineArticle(
+	@ColumnInfo("article_id", index = true)
+	val articleId: Int,
+
+	@ColumnInfo("author_name")
+	val authorName: String?,
+
+	@ColumnInfo("author_avatar_url")
+	val authorAvatarUrl: String?,
+
+	@ColumnInfo("time_published")
+	val timePublished: String,
+
+	val title: String,
+
+	@ColumnInfo("reading_time")
+	val readingTime: Int,
+
+	@ColumnInfo("is_translation")
+	val isTranslation: Boolean,
+
+
+	@ColumnInfo("content_html")
+	val contentHtml: String,
+
+	@TypeConverters(HubsConverter::class)
+	val hubs: HubsList,
+
+	@PrimaryKey(autoGenerate = true)
+	val id: Int = 0,
+
+	)
+
+@ProvidedTypeConverter
+class HubsConverter {
+
+	@TypeConverter
+	fun fromHubs(hubs: HubsList): String {
+		return hubs.hubsList.joinToString(",")
+	}
+
+	@TypeConverter
+	fun fromString(hubs: String): HubsList {
+		return HubsList(hubs.split(","))
+	}
+
+
+}
+
+class HubsList(
+	val hubsList: List<String>
+)
+
+val Context.offlineArticlesDatabase: OfflineArticlesDatabase
+	get() = OfflineArticlesDatabase.getDb(this)
+
+
+@Dao
+interface OfflineArticlesDao {
+
+	/**
+	 * @return article entity by **article_id**, not by room table id
+	 */
+	@Query("SELECT * FROM $ARTICLES_TABLE_NAME WHERE article_id = :articleId")
+	fun getArticleById(articleId: Int): OfflineArticle
+
+	@Query("SELECT EXISTS (SELECT * FROM $ARTICLES_TABLE_NAME WHERE article_id = :articleId)")
+	fun exists(articleId: Int): Boolean
+
+	@Query("SELECT EXISTS (SELECT * FROM $ARTICLES_TABLE_NAME WHERE article_id = :articleId)")
+	fun existsFlow(articleId: Int): Flow<Boolean>
+
+	@Insert(onConflict = OnConflictStrategy.REPLACE)
+	fun insertSnippet(entity: OfflineArticleSnippet)
+
+	@Delete
+	fun deleteSnippet(entity: OfflineArticleSnippet)
+
+	@Insert(onConflict = OnConflictStrategy.REPLACE)
+	fun insert(entity: OfflineArticle)
+
+	@Query("DELETE FROM $ARTICLES_TABLE_NAME WHERE article_id = :id")
+	fun delete(id: Int)
+
+	@Query("DELETE FROM $SNIPPETS_TABLE_NAME WHERE article_id = :id")
+	fun deleteSnippet(id: Int)
+
+	/**
+	 * @return list of article entities from older to newer
+	 */
+	@Query("SELECT * FROM $SNIPPETS_TABLE_NAME ORDER BY id ASC")
+	fun getAllSnippetsSortedByIdAsc(): Flow<List<OfflineArticleSnippet>>
+
+	/**
+	 * @return list of article entities from newer to older
+	 */
+	@Query("SELECT * FROM $SNIPPETS_TABLE_NAME ORDER BY id DESC")
+	fun getAllSnippetsSortedByIdDesc(): Flow<List<OfflineArticleSnippet>>
+
+}
+
+@TypeConverters(HubsConverter::class)
+@Database(
+	entities = [OfflineArticleSnippet::class, OfflineArticle::class],
+	version = 2
+)
+abstract class OfflineArticlesDatabase : RoomDatabase() {
+
+	abstract fun articlesDao(): OfflineArticlesDao
+
+	companion object {
+		@Volatile
+		private var instance: OfflineArticlesDatabase? = null
+		fun getDb(context: Context): OfflineArticlesDatabase {
+			return instance ?: synchronized(this) {
+				val inst = Room.databaseBuilder(
+					context = context,
+					klass = OfflineArticlesDatabase::class.java,
+					name = DATABASE_NAME
+				)
+					.addTypeConverter(HubsConverter())
+					.fallbackToDestructiveMigration()
+					.build()
+				instance = inst
+				inst
+			}
+		}
+	}
+}

app/src/main/java/com/garnegsoft/hubs/ui/screens/user/UserProfile.kt

@@ -307,6 +307,7 @@ internal fun UserProfile(
 								) {
 									whoIs?.let { whoIs ->
 										whoIs.badges.let {
+
 											TitledColumn(title = "Значки") {
 												FlowRow(
 													horizontalArrangement = Arrangement.spacedBy(8.dp),