43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
package settings
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// Retro-compatibility because SERVER_REGIONS changed to SERVER_COUNTRIES
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// and SERVER_REGIONS is now the continent field for servers.
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// TODO v4 remove.
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func nordvpnRetroRegion(selection ServerSelection, validRegions, validCountries []string) (
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updatedSelection ServerSelection) {
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validRegionsMap := stringSliceToMap(validRegions)
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validCountriesMap := stringSliceToMap(validCountries)
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updatedSelection = selection.copy()
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updatedSelection.Regions = make([]string, 0, len(selection.Regions))
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for _, region := range selection.Regions {
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_, isValid := validRegionsMap[region]
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if isValid {
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updatedSelection.Regions = append(updatedSelection.Regions, region)
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continue
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}
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_, isValid = validCountriesMap[region]
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if !isValid {
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// Region is not valid for the country or region
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// just leave it to the validation to fail it later
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continue
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}
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// Region is not valid for a region, but is a valid country
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// Handle retro-compatibility and transfer the value to the
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// country field.
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updatedSelection.Countries = append(updatedSelection.Countries, region)
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}
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return updatedSelection
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}
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func stringSliceToMap(slice []string) (m map[string]struct{}) {
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m = make(map[string]struct{}, len(slice))
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for _, s := range slice {
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m[s] = struct{}{}
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}
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return m
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}
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