DBService object to class with logger injection

src/main/scala/server/Main.scala

@@ -6,19 +6,21 @@ import fetch.{FetchService, FileNameService}
 
 object Main extends IOApp {
   def run(args: List[String]): IO[ExitCode] = {
-    // TODO looks like fetchTask fails server if no csv on meteo server
-    val fetchTask = FileNameService.generateCurrentHour.flatMap(FetchService.fetchSingleFile)
-    val scheduler = Scheduler.scheduleTask(fetchTask)
-      .evalMap { case (name, content) =>
-        IO(println(s"fetched: $name")) *>
-          DBService.save(name, content).attempt.flatMap {
-            case Right(savedName) => IO(println(s"File saved: $savedName"))
-            case Left(err) => IO(println(s"Error: $err"))
-          }
-      }.compile.drain // Convert Stream[IO, Unit] to IO[Unit]
+    for {
+      dbService <- DBService.of
+      fetchTask = FileNameService.generateCurrentHour.flatMap(FetchService.fetchSingleFile)
+      scheduler = Scheduler.scheduleTask(fetchTask)
+        .evalMap { case (name, content) =>
+          IO(println(s"fetched: $name")) *>
+            dbService.save(name, content).attempt.flatMap {
+              case Right(savedName) => IO(println(s"File saved: $savedName"))
+              case Left(err) => IO(println(s"Error: $err"))
+            }
+        }.compile.drain // Convert Stream[IO, Unit] to IO[Unit]
 
-    val server = Server.run // This is an IO[Server]
+      server = Server.run // This is an IO[Server]
 
-    (server, scheduler).parMapN((_, _) => ExitCode.Success)
+      exitCode <- (server, scheduler).parMapN((_, _) => ExitCode.Success)
+    } yield exitCode
   }
 }