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package shortcuts
import (
"fmt"
"maps"
"path"
"reflect"
"strings"
"dove/utils/errors"
"github.com/gofiber/fiber/v2"
)
func Render(context *fiber.Ctx, templateName string, data any) error {
templateData := make(fiber.Map)
mergeContextValues(context, templateData)
if data != nil {
if mergeError := mergeBindData(templateData, data); mergeError != nil {
return mergeError
}
}
return context.Render(resolveTemplate(context, templateName), templateData)
}
func RenderWithStatus(context *fiber.Ctx, templateName string, data any, statusCode int) error {
context.Status(statusCode)
return Render(context, templateName, data)
}
func resolveTemplate(context *fiber.Ctx, templateName string) string {
switch {
case context.Get("HX-Request") == "true" && context.Get("HX-Boosted") != "true":
directory := path.Dir(templateName)
filename := path.Base(templateName)
return fmt.Sprintf("%s/htmx/%s.htmx", directory, filename)
default:
return templateName
}
}
func mergeContextValues(context *fiber.Ctx, targetMap fiber.Map) {
context.Context().VisitUserValues(func(key []byte, value any) {
targetMap[string(key)] = value
})
}
func mergeBindData(targetMap fiber.Map, data any) error {
normalizedData, normalizeError := normalizeToMap(data)
if normalizeError != nil {
return normalizeError
}
maps.Copy(targetMap, normalizedData)
return nil
}
func normalizeToMap(data any) (fiber.Map, error) {
switch typedData := data.(type) {
case fiber.Map:
return typedData, nil
case map[string]any:
return fiber.Map(typedData), nil
default:
return convertStructToMap(data)
}
}
func convertStructToMap(data any) (fiber.Map, error) {
structValue := reflect.ValueOf(data)
switch structValue.Kind() {
case reflect.Pointer:
structValue = structValue.Elem()
}
switch structValue.Kind() {
case reflect.Struct:
return extractStructFields(structValue), nil
default:
return nil, errors.Error(UnsupportedBindType)
}
}
func extractStructFields(structValue reflect.Value) fiber.Map {
structType := structValue.Type()
fieldMap := make(fiber.Map, structValue.NumField())
for fieldIndex := range structType.NumField() {
fieldDescriptor := structType.Field(fieldIndex)
if !fieldDescriptor.IsExported() {
continue
}
fieldKey := resolveFieldKey(fieldDescriptor)
fieldMap[fieldKey] = structValue.Field(fieldIndex).Interface()
}
return fieldMap
}
func resolveFieldKey(fieldDescriptor reflect.StructField) string {
jsonTag := fieldDescriptor.Tag.Get("json")
switch {
case jsonTag == "" || jsonTag == "-":
return fieldDescriptor.Name
default:
return extractTagName(jsonTag, fieldDescriptor.Name)
}
}
func extractTagName(jsonTag string, fallbackName string) string {
separatorIndex := strings.IndexByte(jsonTag, ',')
switch {
case separatorIndex < 0:
return jsonTag
case separatorIndex > 0:
return jsonTag[:separatorIndex]
default:
return fallbackName
}
}
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