DBService object to class with logger injection

src/main/scala/db/DBService.scala

@@ -2,6 +2,8 @@ package db
 
 import cats.effect.{IO, Resource}
 import cats.implicits.toTraverseOps
+import org.typelevel.log4cats.Logger
+import org.typelevel.log4cats.slf4j.Slf4jLogger
 
 import java.io.File
 import java.nio.file.{Files, Paths}
@@ -11,6 +13,12 @@ import scala.io.Source
 import scala.util.Try
 
 object DBService {
+  def of: IO[DBService] = {
+    Slf4jLogger.create[IO].map(logger => new DBService(logger))
+  }
+}
+
+class DBService(log: Logger[IO]) {
   private val dateFormatter = DateTimeFormatter.ofPattern("yyyyMMdd_HHmm")
   private val dataPath = "./data"
 

src/main/scala/db/Main.scala

@@ -3,7 +3,6 @@ package db
 import cats.effect.IO
 import cats.effect.unsafe.implicits.global
 import cats.implicits.toTraverseOps
-import db.DBService
 
 import java.time.{LocalDate, LocalDateTime}
 import java.time.format.DateTimeFormatter
@@ -16,21 +15,24 @@ object Main {
     val to = LocalDateTime.parse("20230501_1230", dateFormatter)
 
     for {
-      lines <- DBService.getInRange(from, to)
+      dbService <- DBService.of
+      lines <- dbService.getInRange(from, to)
       _ <- lines.traverse(IO.println)
     } yield ()
   }
 
   private def testGetDates: IO[Unit] = {
     for {
-      dates <- DBService.getDates()
+      dbService <- DBService.of
+      dates <- dbService.getDates()
       _ <- IO.println(dates)
     } yield ()
   }
 
   private def testGetDate: IO[Unit] = {
     for {
-      dates <- DBService.getDateFileNames(LocalDate.of(2023, 4, 23))
+      dbService <- DBService.of
+      dates <- dbService.getDateFileNames(LocalDate.of(2023, 4, 23))
       _ <- IO.println(dates)
     } yield ()
   }