krystal/go-katapult

package buildspec //nolint:dupl

import (
    "encoding/xml"
    "fmt"
)

type Network struct {
    ID        string `json:"id,omitempty" yaml:"id,omitempty"`
    Permalink string `json:"permalink,omitempty" yaml:"permalink,omitempty"`
}

func (s *Network) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
    x := &xmlNetwork{}

    switch {
    case s.ID != "":
        x.Value = s.ID
    case s.Permalink != "":
        x.By = permalink
        x.Value = s.Permalink
    }

    return e.EncodeElement(x, start)
}

func (s *Network) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
    x := &xmlNetwork{}
    _ = d.DecodeElement(x, &start)

    v := Network{}

    switch {
    case x.By == "":
        v.ID = x.Value
    case x.By == permalink:
        v.Permalink = x.Value
    default:
        return fmt.Errorf(
            `%w: Network by="%s" is not supported`, ErrParseXML, x.By,
        )
    }

    *s = v

    return nil
}

type xmlNetwork xmlLookupElem