Room Database setup

composeApp/src/iosMain/kotlin/ac/aux/compose/PlatformContext.ios.kt

@@ -0,0 +1,3 @@
+package ac.aux.compose
+
+actual class PlatformContext

composeApp/src/iosMain/kotlin/ac/aux/compose/database/builder/PlatformDatabaseBuilder.ios.kt

@@ -0,0 +1,32 @@
+package ac.aux.compose.database.builder
+
+import ac.aux.compose.PlatformContext
+import ac.aux.compose.database.AuxDatabase
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import kotlinx.cinterop.ExperimentalForeignApi
+import platform.Foundation.NSDocumentDirectory
+import platform.Foundation.NSFileManager
+import platform.Foundation.NSUserDomainMask
+
+actual object PlatformDatabaseBuilder {
+    actual fun getDatabaseBuilder(platformContext: PlatformContext): RoomDatabase.Builder<AuxDatabase> {
+        val dbFilePath = documentDirectory() + "/aux.db"
+        return Room.databaseBuilder<AuxDatabase>(
+            name = dbFilePath,
+        )
+    }
+
+    @OptIn(ExperimentalForeignApi::class)
+    private fun documentDirectory(): String {
+        val documentDirectory = NSFileManager.defaultManager.URLForDirectory(
+            directory = NSDocumentDirectory,
+            inDomain = NSUserDomainMask,
+            appropriateForURL = null,
+            create = false,
+            error = null,
+        )
+        return requireNotNull(documentDirectory?.path)
+    }
+
+}