feat(provider): интерфейс Provider, Credentials, Zone

internal/provider/provider.go

@@ -0,0 +1,28 @@
+package provider
+
+import (
+	"context"
+
+	"github.com/vasyakrg/dns-autoresolver/internal/diff"
+	"github.com/vasyakrg/dns-autoresolver/internal/model"
+)
+
+// Credentials holds the secret used to authenticate against a provider.
+// For Selectel this is the project-scoped token sent as X-Auth-Token.
+type Credentials struct {
+	Secret string
+}
+
+// Zone is a provider-neutral DNS zone reference.
+type Zone struct {
+	ID   string
+	Name string
+}
+
+// Provider is implemented per DNS provider (Selectel first).
+type Provider interface {
+	Name() string
+	ListZones(ctx context.Context, creds Credentials) ([]Zone, error)
+	GetRecords(ctx context.Context, creds Credentials, zoneID string) ([]model.Record, error)
+	ApplyChanges(ctx context.Context, creds Credentials, zoneID string, cs diff.Changeset) error
+}