add auth

internal/auth/domain/errors.go

@@ -0,0 +1,11 @@
+package domain
+
+import "errors"
+
+var (
+	ErrUserNotFound      = errors.New("user not found")
+	ErrInvalidEmail      = errors.New("invalid email")
+	ErrInvalidPassword   = errors.New("invalid password")
+	ErrUserAlreadyExists = errors.New("user already exists")
+	ErrInvalidToken      = errors.New("invalid token")
+)

internal/auth/domain/id.go

@@ -0,0 +1,13 @@
+package domain
+
+import "github.com/google/uuid"
+
+type ID = uuid.UUID
+
+func NewID() ID {
+	return uuid.New()
+}
+
+func ParseID(s string) (ID, error) {
+	return uuid.Parse(s)
+}

internal/auth/domain/user.go

@@ -0,0 +1,19 @@
+package domain
+
+import "time"
+
+type User struct {
+	ID        ID
+	Email     string
+	Username  string
+	Password  string
+	CreatedAt time.Time
+	UpdatedAt time.Time
+}
+
+type UserWithoutPassword struct {
+	ID        ID
+	Email     string
+	Username  string
+	CreatedAt time.Time
+}