chore(sources/env): bump gosettings to v0.3.0-rc13

- Use `RetroKeys` option with env.* method calls
- Use `CSV*` typed methods
- Inject `handleDeprecatedKey` function

internal/configuration/sources/env/wireguard.go

@@ -1,10 +1,6 @@
 package env
 
 import (
-	"fmt"
-	"net/netip"
-	"strings"
-
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gosettings/sources/env"
 )
@@ -15,11 +11,11 @@ func (s *Source) readWireguard() (wireguard settings.Wireguard, err error) {
 	}()
 	wireguard.PrivateKey = s.env.Get("WIREGUARD_PRIVATE_KEY", env.ForceLowercase(false))
 	wireguard.PreSharedKey = s.env.Get("WIREGUARD_PRESHARED_KEY", env.ForceLowercase(false))
-	envKey, _ := s.getEnvWithRetro("VPN_INTERFACE",
-		[]string{"WIREGUARD_INTERFACE"}, env.ForceLowercase(false))
-	wireguard.Interface = s.env.String(envKey)
+	wireguard.Interface = s.env.String("VPN_INTERFACE",
+		env.RetroKeys("WIREGUARD_INTERFACE"), env.ForceLowercase(false))
 	wireguard.Implementation = s.env.String("WIREGUARD_IMPLEMENTATION")
-	wireguard.Addresses, err = s.readWireguardAddresses()
+	wireguard.Addresses, err = s.env.CSVNetipPrefixes("WIREGUARD_ADDRESSES",
+		env.RetroKeys("WIREGUARD_ADDRESS"))
 	if err != nil {
 		return wireguard, err // already wrapped
 	}
@@ -31,23 +27,3 @@ func (s *Source) readWireguard() (wireguard settings.Wireguard, err error) {
 	}
 	return wireguard, nil
 }
-
-func (s *Source) readWireguardAddresses() (addresses []netip.Prefix, err error) {
-	key, value := s.getEnvWithRetro("WIREGUARD_ADDRESSES",
-		[]string{"WIREGUARD_ADDRESS"})
-	if value == nil {
-		return nil, nil
-	}
-
-	addressStrings := strings.Split(*value, ",")
-	addresses = make([]netip.Prefix, len(addressStrings))
-	for i, addressString := range addressStrings {
-		addressString = strings.TrimSpace(addressString)
-		addresses[i], err = netip.ParsePrefix(addressString)
-		if err != nil {
-			return nil, fmt.Errorf("environment variable %s: %w", key, err)
-		}
-	}
-
-	return addresses, nil
-}