refactor: change structure project

hub/internal/migrator/migrator.go

@@ -0,0 +1,47 @@
+package migrator
+
+import (
+	"database/sql"
+	"embed"
+	"errors"
+	"fmt"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+
+	"github.com/golang-migrate/migrate/v4"
+	"github.com/golang-migrate/migrate/v4/database/postgres"
+	"github.com/golang-migrate/migrate/v4/source"
+	"github.com/golang-migrate/migrate/v4/source/iofs"
+)
+
+type Migrator struct {
+	srcDriver source.Driver
+}
+
+func NewMigrator(sqlFiles embed.FS, dirname string) (*Migrator, error) {
+	d, err := iofs.New(sqlFiles, dirname)
+	if err != nil {
+		return nil, fmt.Errorf("failed to initialize migration driver: %w", err)
+	}
+	return &Migrator{srcDriver: d}, nil
+}
+
+func (m *Migrator) ApplyMigrations(db *sql.DB) error {
+	driver, err := postgres.WithInstance(db, &postgres.Config{})
+	if err != nil {
+		return fmt.Errorf("unable to create db instance: %w", err)
+	}
+
+	migrator, err := migrate.NewWithInstance("migration_embeded_sql_files", m.srcDriver, "psql_db", driver)
+	if err != nil {
+		return fmt.Errorf("unable to create migration: %w", err)
+	}
+
+	defer migrator.Close()
+
+	if err = migrator.Up(); err != nil && !errors.Is(err, migrate.ErrNoChange) {
+		return fmt.Errorf("unable to apply migrations: %w", err)
+	}
+
+	return nil
+}