120 lines
2.8 KiB
Go
120 lines
2.8 KiB
Go
package utils
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import (
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"errors"
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"fmt"
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"strconv"
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"strings"
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"github.com/qdm12/gluetun/internal/configuration"
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"github.com/qdm12/gluetun/internal/constants"
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)
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func commaJoin(slice []string) string {
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return strings.Join(slice, ", ")
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}
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var ErrNoServerFound = errors.New("no server found")
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func NoServerFoundError(selection configuration.ServerSelection) (err error) {
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var messageParts []string
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protocol := constants.UDP
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if selection.TCP {
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protocol = constants.TCP
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}
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messageParts = append(messageParts, "protocol "+protocol)
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if selection.Group != "" {
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part := "group " + selection.Group
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messageParts = append(messageParts, part)
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}
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switch len(selection.Countries) {
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case 0:
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case 1:
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part := "country " + selection.Countries[0]
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messageParts = append(messageParts, part)
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default:
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part := "countries " + commaJoin(selection.Countries)
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messageParts = append(messageParts, part)
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}
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switch len(selection.Regions) {
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case 0:
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case 1:
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part := "region " + selection.Regions[0]
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messageParts = append(messageParts, part)
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default:
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part := "regions " + commaJoin(selection.Regions)
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messageParts = append(messageParts, part)
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}
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switch len(selection.Cities) {
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case 0:
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case 1:
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part := "city " + selection.Cities[0]
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messageParts = append(messageParts, part)
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default:
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part := "cities " + commaJoin(selection.Cities)
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messageParts = append(messageParts, part)
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}
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if selection.Owned {
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messageParts = append(messageParts, "owned servers only")
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}
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switch len(selection.ISPs) {
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case 0:
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case 1:
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part := "ISP " + selection.ISPs[0]
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messageParts = append(messageParts, part)
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default:
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part := "ISPs " + commaJoin(selection.ISPs)
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messageParts = append(messageParts, part)
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}
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switch len(selection.Hostnames) {
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case 0:
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case 1:
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part := "hostname " + selection.Hostnames[0]
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messageParts = append(messageParts, part)
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default:
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part := "hostnames " + commaJoin(selection.Hostnames)
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messageParts = append(messageParts, part)
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}
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switch len(selection.Names) {
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case 0:
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case 1:
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part := "name " + selection.Names[0]
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messageParts = append(messageParts, part)
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default:
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part := "names " + commaJoin(selection.Names)
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messageParts = append(messageParts, part)
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}
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switch len(selection.Numbers) {
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case 0:
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case 1:
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part := "server number " + strconv.Itoa(int(selection.Numbers[0]))
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messageParts = append(messageParts, part)
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default:
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serverNumbers := make([]string, len(selection.Numbers))
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for i := range selection.Numbers {
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serverNumbers[i] = strconv.Itoa(int(selection.Numbers[i]))
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}
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part := "server numbers " + commaJoin(serverNumbers)
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messageParts = append(messageParts, part)
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}
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if selection.EncryptionPreset != "" {
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part := "encryption preset " + selection.EncryptionPreset
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messageParts = append(messageParts, part)
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}
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message := "for " + strings.Join(messageParts, "; ")
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return fmt.Errorf("%w: %s", ErrNoServerFound, message)
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}
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