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package element
import (
"fmt"
"strconv"
"github.com/mitch000001/go-hbci/charset"
"github.com/mitch000001/go-hbci/domain"
)
// NewReferencingMessage returns a new referencing message for the given
// dialogID and messageNumber
func NewReferencingMessage(dialogID string, messageNumber int) *ReferencingMessageDataElement {
r := &ReferencingMessageDataElement{
DialogID: NewIdentification(dialogID),
MessageNumber: NewNumber(messageNumber, 4),
}
r.DataElement = NewDataElementGroup(referenceMessageDEG, 2, r)
return r
}
// ReferencingMessageDataElement represents a reference to another message for
// a given dialog
type ReferencingMessageDataElement struct {
DataElement
DialogID *IdentificationDataElement
MessageNumber *NumberDataElement
}
// Val returns the value of r as domain.ReferencingMessage
func (r *ReferencingMessageDataElement) Val() domain.MessageReference {
return domain.MessageReference{
DialogID: r.DialogID.Val(),
MessageNumber: r.MessageNumber.Val(),
}
}
// IsValid returns true if the DialogID and MessageNumber are set and the
// underlying value is valid.
func (r *ReferencingMessageDataElement) IsValid() bool {
if r.DialogID == nil || r.MessageNumber == nil {
return false
}
return r.DataElement.IsValid()
}
// UnmarshalHBCI unmarshals value into r
func (r *ReferencingMessageDataElement) UnmarshalHBCI(value []byte) error {
elements, err := ExtractElements(value)
if len(elements) != 2 {
return fmt.Errorf("Malformed marshaled value")
}
dialogID := charset.ToUTF8(elements[0])
num, err := strconv.Atoi(charset.ToUTF8(elements[1]))
if err != nil {
return fmt.Errorf("%T: Malformed message number: %v", r, err)
}
*r = *NewReferencingMessage(dialogID, num)
return nil
}
// GroupDataElements returns the grouped DataElements
func (r *ReferencingMessageDataElement) GroupDataElements() []DataElement {
return []DataElement{
r.DialogID,
r.MessageNumber,
}
}
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