restructured viewmodels, better serialization

providers/xmlprovider/categories.go

@@ -0,0 +1,45 @@
+package xmlprovider
+
+import (
+	"encoding/xml"
+	"fmt"
+)
+
+type CategoryProvider struct {
+	XMLProvider[Categories]
+}
+
+type Categories struct {
+	XMLName  xml.Name   `xml:"kategorien"`
+	Category []Category `xml:"kategorie"`
+}
+
+type Category struct {
+	XMLName  xml.Name `xml:"kategorie"`
+	Names    []string `xml:"name"`
+	SortName string   `xml:"sortiername"`
+	Identifier
+	AnnotationNote
+}
+
+func (c Categories) Append(data Categories) Categories {
+	c.Category = append(c.Category, data.Category...)
+	return c
+}
+
+func (c Categories) String() string {
+	var res []string
+	for _, category := range c.Category {
+		res = append(res, category.String())
+	}
+
+	return fmt.Sprintf("Categories: %v", res)
+}
+
+func (c *Category) String() string {
+	return fmt.Sprintf("ID: %s\nNames: %v\nSortName: %s\nAnnotations: %v\nNotes: %v\n", c.ID, c.Names, c.SortName, c.Annotations, c.Notes)
+}
+
+func NewCategoryProvider(paths []string) *CategoryProvider {
+	return &CategoryProvider{XMLProvider: XMLProvider[Categories]{paths: paths}}
+}