chore(updater): move updater packages to pkg/updaters/<name>

pkg/updaters/vpnunlimited/servers.go

@@ -0,0 +1,43 @@
+package vpnunlimited
+
+import (
+	"context"
+	"fmt"
+	"sort"
+
+	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/provider/common"
+)
+
+func (u *Updater) FetchServers(ctx context.Context, minServers int) (
+	servers []models.Server, err error,
+) {
+	// Hardcoded data from a user provided ZIP file since it's behind a login wall
+	hts, warnings := getHostToServer()
+	for _, warning := range warnings {
+		u.warner.Warn(warning)
+	}
+
+	hosts := hts.toHostsSlice()
+	resolveSettings := parallelResolverSettings(hosts)
+	hostToIPs, warnings, err := u.parallelResolver.Resolve(ctx, resolveSettings)
+	for _, warning := range warnings {
+		u.warner.Warn(warning)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if len(hostToIPs) < minServers {
+		return nil, fmt.Errorf("%w: %d and expected at least %d",
+			common.ErrNotEnoughServers, len(servers), minServers)
+	}
+
+	hts.adaptWithIPs(hostToIPs)
+
+	servers = hts.toServersSlice()
+
+	sort.Sort(models.SortableServers(servers))
+
+	return servers, nil
+}