package diff

// ExtensionsDiff describes the changes between a pair of sets of specification extensions: https://swagger.io/specification/#specification-extensions

type ExtensionsDiff InterfaceMapDiff

// Empty indicates whether a change was found in this element

func (diff *ExtensionsDiff) Empty() bool {

return (*InterfaceMapDiff)(diff).Empty()

}

func getExtensionsDiff(config *Config, extensions1, extensions2 map[string]any) (*ExtensionsDiff, error) {

if config.IsExcludeExtensions() {

return nil, nil

}

// Filter out excluded extension names

filtered1 := filterExtensions(extensions1, config)

filtered2 := filterExtensions(extensions2, config)

diff, err := getExtensionsDiffInternal(filtered1, filtered2)

if err != nil {

return nil, err

}

if diff.Empty() {

return nil, nil

}

return (*ExtensionsDiff)(diff), nil

}

func getExtensionsDiffInternal(extensions1, extensions2 map[string]any) (*InterfaceMapDiff, error) {

return getInterfaceMapDiff(extensions1, extensions2)

}

// filterExtensions returns a copy of the extensions map with excluded extensions removed

func filterExtensions(extensions map[string]any, config *Config) map[string]any {

if len(config.ExcludeExtensions) == 0 {

return extensions

}

filtered := make(map[string]any)

for name, value := range extensions {

if !config.IsExcludedExtension(name) {

filtered[name] = value

}

}

return filtered

}