wishlists + statics + some fixes

src/main/kotlin/space/luminic/budgerapp/services/StaticService.kt

@@ -0,0 +1,29 @@
+package space.luminic.budgerapp.services
+
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.reactor.awaitSingleOrNull
+import kotlinx.coroutines.withContext
+import org.springframework.http.codec.multipart.FilePart
+import org.springframework.stereotype.Service
+import space.luminic.budgerapp.configs.StorageConfig
+import java.nio.file.Files
+import java.nio.file.Paths
+import java.util.*
+
+@Service
+class StaticService(private val storageConfig: StorageConfig) {
+
+    suspend fun saveFile(spaceId: String, wishListItemId: String, filePart: FilePart): String {
+
+        val folder = Paths.get(storageConfig.rootLocation.toString(), spaceId, "wishlists", wishListItemId)
+        withContext(Dispatchers.IO) {
+            Files.createDirectories(folder)
+        }
+        val filename = UUID.randomUUID().toString().split("-")[0] + "." + filePart.filename().split(".").last()
+        val filePath =
+            folder.resolve(filename)
+        filePart.transferTo(filePath).awaitSingleOrNull()
+        return filePath.toString()
+    }
+
+}