add forget password

internal/handlers/request/auth.go

@@ -1,5 +1,11 @@
 package request
 
+import (
+	"errors"
+	"fmt"
+	"github.com/go-playground/validator/v10"
+)
+
 type LoginRequest struct {
 	Email    string `json:"email"`
 	Password string `json:"password"`
@@ -10,6 +16,63 @@ type ResetPasswordRequest struct {
 }
 
 type ResetPasswordChangeRequest struct {
-	Token    string `json:"token" validate:"required"`
-	Password string `json:"password" validate:"required"`
+	OldPassword string `json:"old_password" validate:"required"`
+	NewPassword string `json:"new_password" validate:"required,strongpwd"`
+}
+
+func (e *ResetPasswordChangeRequest) Validate() error {
+	validate := validator.New()
+
+	validate.RegisterValidation("strongpwd", validateStrongPassword)
+
+	if err := validate.Struct(e); err != nil {
+		// Handle the validation errors
+		for _, err := range err.(validator.ValidationErrors) {
+			switch err.Field() {
+			case "NewPassword":
+				return fmt.Errorf("%w", validatePasswordError(err.Tag()))
+			default:
+				return fmt.Errorf("validation failed: %w", err)
+			}
+		}
+	}
+
+	return nil
+}
+
+func validateStrongPassword(fl validator.FieldLevel) bool {
+	password := fl.Field().String()
+
+	var (
+		hasMinLen = len(password) >= 8
+	)
+
+	return hasMinLen
+}
+
+// Error messages for password validation
+var (
+	ErrPasswordTooShort   = errors.New("password must be at least 8 characters long")
+	ErrPasswordNoUpper    = errors.New("password must contain at least one uppercase letter")
+	ErrPasswordNoLower    = errors.New("password must contain at least one lowercase letter")
+	ErrPasswordNoNumber   = errors.New("password must contain at least one digit")
+	ErrPasswordNoSpecial  = errors.New("password must contain at least one special character (!@#$%^&*)")
+	ErrPasswordValidation = errors.New("password does not meet the strength requirements")
+)
+
+func validatePasswordError(tag string) error {
+	switch tag {
+	case "min":
+		return ErrPasswordTooShort
+	case "uppercase":
+		return ErrPasswordNoUpper
+	case "lowercase":
+		return ErrPasswordNoLower
+	case "number":
+		return ErrPasswordNoNumber
+	case "special":
+		return ErrPasswordNoSpecial
+	default:
+		return ErrPasswordValidation
+	}
 }