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

internal/provider/windscribe/updater/servers.go

@@ -0,0 +1,79 @@
+// Package windscribe contains code to obtain the server information
+// for the Windscribe provider.
+package windscribe
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"net/http"
+
+	"github.com/qdm12/gluetun/internal/constants/vpn"
+	"github.com/qdm12/gluetun/internal/models"
+)
+
+var (
+	ErrNotEnoughServers = errors.New("not enough servers found")
+	ErrNoWireguardKey   = errors.New("no wireguard public key found")
+)
+
+func GetServers(ctx context.Context, client *http.Client, minServers int) (
+	servers []models.Server, err error) {
+	data, err := fetchAPI(ctx, client)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, regionData := range data.Data {
+		region := regionData.Region
+		for _, group := range regionData.Groups {
+			city := group.City
+			x5090Name := group.OvpnX509
+			wgPubKey := group.WgPubKey
+			for _, node := range group.Nodes {
+				ips := make([]net.IP, 0, 2) // nolint:gomnd
+				if node.IP != nil {
+					ips = append(ips, node.IP)
+				}
+				if node.IP2 != nil {
+					ips = append(ips, node.IP2)
+				}
+				server := models.Server{
+					VPN:      vpn.OpenVPN,
+					TCP:      true,
+					UDP:      true,
+					Region:   region,
+					City:     city,
+					Hostname: node.Hostname,
+					OvpnX509: x5090Name,
+					IPs:      ips,
+				}
+				servers = append(servers, server)
+
+				if node.IP3 == nil { // Wireguard + Stealth
+					continue
+				} else if wgPubKey == "" {
+					return nil, fmt.Errorf("%w: for node %s", ErrNoWireguardKey, node.Hostname)
+				}
+
+				server.VPN = vpn.Wireguard
+				server.UDP = true
+				server.TCP = false
+				server.OvpnX509 = ""
+				server.WgPubKey = wgPubKey
+				server.IPs = []net.IP{node.IP3}
+				servers = append(servers, server)
+			}
+		}
+	}
+
+	if len(servers) < minServers {
+		return nil, fmt.Errorf("%w: %d and expected at least %d",
+			ErrNotEnoughServers, len(servers), minServers)
+	}
+
+	sortServers(servers)
+
+	return servers, nil
+}