adding migrator

internal/db/db.go

@@ -0,0 +1,35 @@
+package db
+
+import (
+	"database/sql",
+	"log"
+
+	"github.com/golang-migrate/migrate/v4"
+	"github.com/golang-migrate/migrate/v4/database/sqlite3"
+	_ "github.com/golang-migrate/migrate/v4/source/file"
+	_ "github.com/mattn/go-sqlite3"
+)
+
+func main() {
+	db, err := sql.Open("sqlite3", "database.sqlite")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	driver, err := sqlite3.WithInstance(db, &sqlite3.Config{})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	migrator, err := migrate.NewWithDatabaseInstance(
+		"file://migrations/", "sqlite3", driver
+	)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if err := migrator.Up(); err != nill && err != migrate.ErrNoChange {
+		log.Fatal(err)
+	}
+}