chore(all): move sub-packages to internal/provider

internal/provider/mullvad/updater/hosttoserver.go

@@ -0,0 +1,86 @@
+package mullvad
+
+import (
+	"errors"
+	"fmt"
+	"net"
+	"strings"
+
+	"github.com/qdm12/gluetun/internal/constants/vpn"
+	"github.com/qdm12/gluetun/internal/models"
+)
+
+type hostToServer map[string]models.Server
+
+var (
+	ErrNoIP                = errors.New("no IP address for VPN server")
+	ErrParseIPv4           = errors.New("cannot parse IPv4 address")
+	ErrParseIPv6           = errors.New("cannot parse IPv6 address")
+	ErrVPNTypeNotSupported = errors.New("VPN type not supported")
+)
+
+func (hts hostToServer) add(data serverData) (err error) {
+	if !data.Active {
+		return
+	}
+
+	if data.IPv4 == "" && data.IPv6 == "" {
+		return ErrNoIP
+	}
+
+	server, ok := hts[data.Hostname]
+	if ok { // API returns a server per hostname at most
+		return nil
+	}
+
+	switch data.Type {
+	case "openvpn":
+		server.VPN = vpn.OpenVPN
+		server.UDP = true
+		server.TCP = true
+	case "wireguard":
+		server.VPN = vpn.Wireguard
+		server.UDP = true
+	case "bridge":
+		// ignore bridge servers
+		return nil
+	default:
+		return fmt.Errorf("%w: %s", ErrVPNTypeNotSupported, data.Type)
+	}
+
+	if data.IPv4 != "" {
+		ipv4 := net.ParseIP(data.IPv4)
+		if ipv4 == nil || ipv4.To4() == nil {
+			return fmt.Errorf("%w: %s", ErrParseIPv4, data.IPv4)
+		}
+		server.IPs = append(server.IPs, ipv4)
+	}
+
+	if data.IPv6 != "" {
+		ipv6 := net.ParseIP(data.IPv6)
+		if ipv6 == nil || ipv6.To4() != nil {
+			return fmt.Errorf("%w: %s", ErrParseIPv6, data.IPv6)
+		}
+		server.IPs = append(server.IPs, ipv6)
+	}
+
+	server.Country = data.Country
+	server.City = strings.ReplaceAll(data.City, ",", "")
+	server.Hostname = data.Hostname
+	server.ISP = data.Provider
+	server.Owned = data.Owned
+	server.WgPubKey = data.PubKey
+
+	hts[data.Hostname] = server
+
+	return nil
+}
+
+func (hts hostToServer) toServersSlice() (servers []models.Server) {
+	servers = make([]models.Server, 0, len(hts))
+	for _, server := range hts {
+		server.IPs = uniqueSortedIPs(server.IPs)
+		servers = append(servers, server)
+	}
+	return servers
+}