init

internal/validator/file_validator.go

@@ -0,0 +1,90 @@
+package validator
+
+import (
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+
+	"fmt"
+
+	"github.com/go-playground/validator/v10"
+)
+
+type FileValidator interface {
+	Validate(interface{}) error
+}
+
+type FileValidatorImpl struct {
+	validate *validator.Validate
+}
+
+func NewFileValidatorImpl() *FileValidatorImpl {
+	v := validator.New()
+
+	// Register custom validations
+	v.RegisterValidation("file_type", validateFileType)
+
+	return &FileValidatorImpl{
+		validate: v,
+	}
+}
+
+func (v *FileValidatorImpl) Validate(i interface{}) error {
+	return v.validate.Struct(i)
+}
+
+// Custom validation functions
+func validateFileType(fl validator.FieldLevel) bool {
+	fileType, ok := fl.Field().Interface().(string)
+	if !ok {
+		return false
+	}
+	return constants.IsValidFileType(constants.FileType(fileType))
+}
+
+// Specific validation methods for different request types
+func (v *FileValidatorImpl) ValidateUploadFileRequest(req *contract.UploadFileRequest) error {
+	if req == nil {
+		return fmt.Errorf("request cannot be nil")
+	}
+
+	// Validate file type
+	if req.FileType == "" {
+		return fmt.Errorf("file type is required")
+	}
+
+	if !constants.IsValidFileType(constants.FileType(req.FileType)) {
+		return fmt.Errorf("invalid file type: %s", req.FileType)
+	}
+
+	return nil
+}
+
+func (v *FileValidatorImpl) ValidateUpdateFileRequest(req *contract.UpdateFileRequest) error {
+	if req == nil {
+		return fmt.Errorf("request cannot be nil")
+	}
+
+	// Additional validation can be added here
+	return nil
+}
+
+func (v *FileValidatorImpl) ValidateListFilesRequest(req *contract.ListFilesRequest) error {
+	if req == nil {
+		return fmt.Errorf("request cannot be nil")
+	}
+
+	if req.Page < 1 {
+		return fmt.Errorf("page must be greater than 0")
+	}
+
+	if req.Limit < 1 || req.Limit > 100 {
+		return fmt.Errorf("limit must be between 1 and 100")
+	}
+
+	// Validate file type if provided
+	if req.FileType != nil && !constants.IsValidFileType(constants.FileType(*req.FileType)) {
+		return fmt.Errorf("invalid file type: %s", *req.FileType)
+	}
+
+	return nil
+}