refactor: Decompose tell and eject funcs

pkg/hardware/config.go

@@ -0,0 +1,5 @@
+package hardware
+
+type DriveConfig struct {
+	Drive string
+}

pkg/hardware/eject.go

@@ -0,0 +1,19 @@
+package hardware
+
+import (
+	"os"
+
+	"github.com/pojntfx/stfs/internal/controllers"
+)
+
+func Eject(
+	state DriveConfig,
+) error {
+	f, err := os.OpenFile(state.Drive, os.O_RDONLY, os.ModeCharDevice)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	return controllers.EjectTape(f)
+}

pkg/hardware/hardware.go

@@ -1,13 +0,0 @@
-package hardware
-
-type DriveConfig struct {
-	Drive string
-}
-
-func Eject(
-	state DriveConfig,
-) error
-
-func Tell(
-	state DriveConfig,
-) (int, error)

pkg/hardware/tell.go

@@ -0,0 +1,19 @@
+package hardware
+
+import (
+	"os"
+
+	"github.com/pojntfx/stfs/internal/controllers"
+)
+
+func Tell(
+	state DriveConfig,
+) (int64, error) {
+	f, err := os.OpenFile(state.Drive, os.O_RDONLY, os.ModeCharDevice)
+	if err != nil {
+		return -1, err
+	}
+	defer f.Close()
+
+	return controllers.GetCurrentRecordFromTape(f)
+}