feat: user domain -- errors

internal/domain/entity/user.go

@@ -0,0 +1,38 @@
+package entity
+
+import (
+	"backend/pkg/validate/national"
+	"backend/pkg/validate/phone"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type User struct {
+	ID          uuid.UUID
+	Name        string
+	LastName    string
+	PhoneNumber string
+	Email       string
+	PubKey      string
+	NationalID  string
+	BirthDate   time.Time // format YYYY-MM-DD in presentation
+	CreatedAt   time.Time
+	UpdatedAt   time.Time
+}
+
+func (u *User) ValidatePhoneNumber(phoneNumber string) error {
+	ok, err := phone.IsValid(phoneNumber)
+	if !ok {
+		return err
+	}
+	return nil
+}
+
+func (u *User) ValidateNationalID(ID string) error {
+	ok, err := national.IsValid(ID)
+	if !ok {
+		return err
+	}
+	return nil
+}