Added Mullvad settings setup

internal/settings/settings.go

@@ -1,6 +1,7 @@
 package settings
 
 import (
+	"fmt"
 	"strings"
 
 	"github.com/qdm12/private-internet-access-docker/internal/params"
@@ -8,8 +9,10 @@ import (
 
 // Settings contains all settings for the program to run
 type Settings struct {
+	VPNSP       string
 	OpenVPN     OpenVPN
 	PIA         PIA
+	Mullvad     Mullvad
 	DNS         DNS
 	Firewall    Firewall
 	TinyProxy   TinyProxy
@@ -17,10 +20,17 @@ type Settings struct {
 }
 
 func (s *Settings) String() string {
+	var vpnServiceProvider string
+	switch s.VPNSP {
+	case "pia":
+		vpnServiceProvider = s.PIA.String()
+	case "mullvad":
+		vpnServiceProvider = s.Mullvad.String()
+	}
 	return strings.Join([]string{
 		"Settings summary below:",
 		s.OpenVPN.String(),
-		s.PIA.String(),
+		vpnServiceProvider,
 		s.DNS.String(),
 		s.Firewall.String(),
 		s.TinyProxy.String(),
@@ -32,10 +42,28 @@ func (s *Settings) String() string {
 // GetAllSettings obtains all settings for the program and returns an error as soon
 // as an error is encountered reading them.
 func GetAllSettings(params params.ParamsReader) (settings Settings, err error) {
+	settings.VPNSP, err = params.GetVPNSP()
+	if err != nil {
+		return settings, err
+	}
 	settings.OpenVPN, err = GetOpenVPNSettings(params)
 	if err != nil {
 		return settings, err
 	}
+	switch settings.VPNSP {
+	case "pia":
+		settings.PIA, err = GetPIASettings(params)
+		if err != nil {
+			return settings, err
+		}
+	case "mullvad":
+		settings.Mullvad, err = GetMullvadSettings(params)
+		if err != nil {
+			return settings, err
+		}
+	default:
+		return settings, fmt.Errorf("VPN service provider %q is not valid", settings.VPNSP)
+	}
 	settings.PIA, err = GetPIASettings(params)
 	if err != nil {
 		return settings, err