refactor: major project restructure

internal/store/store.go

@@ -0,0 +1,32 @@
+package store
+
+import (
+	"fmt"
+	"path"
+
+	bolt "go.etcd.io/bbolt"
+)
+
+var (
+	db          *bolt.DB
+	trackBucket = []byte("tracks")
+)
+
+func OpenDB(cfgDir string) error {
+	var err error
+
+	dbPath := path.Join(cfgDir, "tracks.db")
+	db, err = bolt.Open(dbPath, 0600, nil)
+	if err != nil {
+		return fmt.Errorf("failed to open database: %w", err)
+	}
+
+	if err := db.Update(func(tx *bolt.Tx) error {
+		_, err := tx.CreateBucketIfNotExists(trackBucket)
+		return err
+	}); err != nil {
+		return fmt.Errorf("failed to create bucket: %w", err)
+	}
+
+	return nil
+}