refactor(storage): new storage file structure

- new directory structure containing manifest.json and one json file per provider, by default.
- the manifest.json file can specify a filepath for each vpn provider
- each vpn provider json data file can contain the `"preferred": true` field to enforce it is used even if outdated, unless there is a version mismatch
- `STORAGE_SERVERS_DIRECTORY_PATH` replaces `STORAGE_FILEPATH` (which is now a migration source only). It sets the directory where server manifest and per-provider JSON files are stored (default: `/gluetun/servers/`).
- First-run migration: On startup, gluetun checks for the old /gluetun/servers.json file; if found and no new manifest exists, it automatically migrates all data to /gluetun/servers/ directory structure
- Silent fallback: If legacy file isn't found, uses the new directory path normally
- Legacy cleanup: After successful migration, attempts to remove the old fat JSON file (logs warning only if removal fails, e.g., read-only bind mounts)

internal/provider/utils/connection.go

@@ -4,10 +4,10 @@ import (
 	"fmt"
 	"slices"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
+	umodels "github.com/qdm12/gluetun-servers/pkg/models"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gluetun/internal/models"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
-	umodels "github.com/qdm12/gluetun/pkg/updaters/models"
 )
 
 type ConnectionDefaults struct {

internal/provider/utils/connection_test.go

@@ -7,12 +7,12 @@ import (
 	"testing"
 
 	"github.com/golang/mock/gomock"
+	"github.com/qdm12/gluetun-servers/pkg/constants"
+	umodels "github.com/qdm12/gluetun-servers/pkg/models"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gluetun/internal/constants/providers"
 	"github.com/qdm12/gluetun/internal/models"
 	"github.com/qdm12/gluetun/internal/provider/common"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
-	umodels "github.com/qdm12/gluetun/pkg/updaters/models"
 	"github.com/stretchr/testify/assert"
 )
 

internal/provider/utils/nofetcher.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/qdm12/gluetun/pkg/updaters/models"
+	"github.com/qdm12/gluetun-servers/pkg/models"
 )
 
 type NoFetcher struct {

internal/provider/utils/openvpn.go

@@ -4,11 +4,11 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gluetun/internal/constants/openvpn"
 	"github.com/qdm12/gluetun/internal/models"
 	"github.com/qdm12/gluetun/internal/openvpn/pkcs8"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 )
 
 type OpenVPNProviderSettings struct {

internal/provider/utils/pick.go

@@ -8,9 +8,9 @@ import (
 	"net/netip"
 	"sync"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gluetun/internal/models"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 )
 
 // ConnectionPicker is a struct that holds the state of the connection pool cycler.

internal/provider/utils/pick_test.go

@@ -4,9 +4,9 @@ import (
 	"net/netip"
 	"testing"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
 	"github.com/qdm12/gluetun/internal/models"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 	"github.com/stretchr/testify/assert"
 )
 

internal/provider/utils/port.go

@@ -3,8 +3,8 @@ package utils
 import (
 	"fmt"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 )
 
 func getPort(selection settings.ServerSelection,

internal/provider/utils/port_test.go

@@ -3,8 +3,8 @@ package utils
 import (
 	"testing"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 	"github.com/stretchr/testify/assert"
 )
 

internal/provider/utils/protocol.go

@@ -1,8 +1,8 @@
 package utils
 
 import (
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 )
 
 func getProtocol(selection settings.ServerSelection) (protocol string) {

internal/provider/utils/protocol_test.go

@@ -3,8 +3,8 @@ package utils
 import (
 	"testing"
 
+	"github.com/qdm12/gluetun-servers/pkg/constants"
 	"github.com/qdm12/gluetun/internal/configuration/settings"
-	"github.com/qdm12/gluetun/pkg/updaters/constants"
 	"github.com/stretchr/testify/assert"
 )