chore(config): define Source interface locally where needed

internal/cli/healthcheck.go

@@ -6,11 +6,10 @@ import (
 	"net/http"
 	"time"
 
-	"github.com/qdm12/gluetun/internal/configuration/sources"
 	"github.com/qdm12/gluetun/internal/healthcheck"
 )
 
-func (c *CLI) HealthCheck(ctx context.Context, source sources.Source, warner Warner) error {
+func (c *CLI) HealthCheck(ctx context.Context, source Source, warner Warner) error {
 	// Extract the health server port from the configuration.
 	config, err := source.ReadHealth()
 	if err != nil {

internal/cli/interfaces.go

@@ -0,0 +1,9 @@
+package cli
+
+import "github.com/qdm12/gluetun/internal/configuration/settings"
+
+type Source interface {
+	Read() (settings settings.Settings, err error)
+	ReadHealth() (health settings.Health, err error)
+	String() string
+}

internal/cli/openvpnconfig.go

@@ -8,7 +8,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/qdm12/gluetun/internal/configuration/sources"
 	"github.com/qdm12/gluetun/internal/constants"
 	"github.com/qdm12/gluetun/internal/openvpn/extract"
 	"github.com/qdm12/gluetun/internal/provider"
@@ -36,7 +35,7 @@ type IPFetcher interface {
 	FetchMultiInfo(ctx context.Context, ips []net.IP) (data []ipinfo.Response, err error)
 }
 
-func (c *CLI) OpenvpnConfig(logger OpenvpnConfigLogger, source sources.Source) error {
+func (c *CLI) OpenvpnConfig(logger OpenvpnConfigLogger, source Source) error {
 	storage, err := storage.New(logger, constants.ServersData)
 	if err != nil {
 		return err