feat: add local DB to save downloads

internal/db/setup.go

@@ -0,0 +1,44 @@
+package db
+
+import (
+	"fmt"
+	"os"
+	"path"
+
+	"github.com/mathismqn/godeez/internal/utils"
+	bolt "go.etcd.io/bbolt"
+)
+
+var (
+	db          *bolt.DB
+	trackBucket = []byte("tracks")
+)
+
+func Init() {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: could not get home directory: %v\n", err)
+		os.Exit(1)
+	}
+
+	appDir := path.Join(homeDir, ".godeez")
+	if err := utils.EnsureDir(appDir); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: could not create app directory: %v\n", err)
+		os.Exit(1)
+	}
+
+	dbPath := path.Join(appDir, "tracks.db")
+	db, err = bolt.Open(dbPath, 0600, nil)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error: could not open database: %v\n", err)
+		os.Exit(1)
+	}
+
+	if err := db.Update(func(tx *bolt.Tx) error {
+		_, err := tx.CreateBucketIfNotExists(trackBucket)
+		return err
+	}); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: could not create bucket: %v\n", err)
+		os.Exit(1)
+	}
+}