func formatCanonicalResponse(docs model.DocumentSlice, languages acceptlang.AcceptLanguages) ([]byte, error) {
var formatFilterPriori []string
if languages.Len() > 0 {
var langstr []string
for _, lang := range languages {
langstr = append(langstr, lang.Language)
}
formatFilterPriori = append(langstr, canonFormatFilterPriority...)
} else {
formatFilterPriori = canonFormatFilterPriority
}
// Language Map 型をもつフィールドの言語の種類を一つに絞る
docs.Map(func(d model.Document) model.Document {
// TODO: 工夫すれば、Mongo の Projection 機能でいけるかもしれない
if verb, ok := d.Data["verb"].(map[string]interface{}); ok {
if display, ok := verb["display"].(map[string]interface{}); ok {
verb["display"] = projectMapSingle(display, formatFilterPriori)
}
}
if object, ok := d.Data["object"].(map[string]interface{}); ok {
if objectDefinition, ok := object["definition"].(map[string]interface{}); ok {
if name, ok := objectDefinition["name"].(map[string]interface{}); ok {
objectDefinition["name"] =
projectMapSingle(name, formatFilterPriori)
}
if description, ok := objectDefinition["description"].(map[string]interface{}); ok {
objectDefinition["description"] =
projectMapSingle(description, formatFilterPriori)
}
if choices, ok := objectDefinition["choices"].([]interface{}); ok {
objectDefinition["choices"] =
projectDescriptionInArray(choices, formatFilterPriori)
}
if scale, ok := objectDefinition["scale"].([]interface{}); ok {
objectDefinition["scale"] =
projectDescriptionInArray(scale, formatFilterPriori)
}
if source, ok := objectDefinition["source"].([]interface{}); ok {
objectDefinition["source"] =
projectDescriptionInArray(source, formatFilterPriori)
}
if target, ok := objectDefinition["target"].([]interface{}); ok {
objectDefinition["target"] =
projectDescriptionInArray(target, formatFilterPriori)
}
if steps, ok := objectDefinition["steps"].([]interface{}); ok {
objectDefinition["steps"] =
projectDescriptionInArray(steps, formatFilterPriori)
}
}
}
if attachments, ok := d.Data["attachments"].(map[string]interface{}); ok {
if display, ok := attachments["display"].(map[string]interface{}); ok {
attachments["display"] =
projectMapSingle(display, formatFilterPriori)
}
if display, ok := attachments["description"].(map[string]interface{}); ok {
attachments["description"] =
projectMapSingle(display, formatFilterPriori)
}
}
return d
})
return json.Marshal(map[string]interface{}{
"statements": docs.ToDataArray(),
"more": "",
})
}
