Improved default peer handling (#674)

* create default peers for newly created interfaces (#666)

* allow to manually create default peers for an interface (#666)

internal/app/api/v0/backend/interface_service.go

@@ -2,6 +2,7 @@ package backend
 
 import (
 	"context"
+	"fmt"
 	"io"
 
 	"github.com/h44z/wg-portal/internal/config"
@@ -18,6 +19,7 @@ type InterfaceServiceInterfaceManager interface {
 	DeleteInterface(ctx context.Context, id domain.InterfaceIdentifier) error
 	PrepareInterface(ctx context.Context) (*domain.Interface, error)
 	ApplyPeerDefaults(ctx context.Context, in *domain.Interface) error
+	CreateDefaultPeers(ctx context.Context, id domain.InterfaceIdentifier) error
 }
 
 type InterfaceServiceConfigFileManager interface {
@@ -89,3 +91,10 @@ func (i InterfaceService) PersistInterfaceConfig(ctx context.Context, id domain.
 func (i InterfaceService) ApplyPeerDefaults(ctx context.Context, in *domain.Interface) error {
 	return i.interfaces.ApplyPeerDefaults(ctx, in)
 }
+
+func (i InterfaceService) CreateDefaultPeers(ctx context.Context, id domain.InterfaceIdentifier) error {
+	if !i.cfg.DefaultPeerCreationEnabled() {
+		return fmt.Errorf("default peer creation is not enabled")
+	}
+	return i.interfaces.CreateDefaultPeers(ctx, id)
+}

internal/app/api/v0/handlers/endpoint_config.go

@@ -145,7 +145,7 @@ func (e ConfigEndpoint) handleSettingsGet() http.HandlerFunc {
 				MinPasswordLength:         e.cfg.Auth.MinPasswordLength,
 				AvailableBackends:         controllerFn(),
 				LoginFormVisible:          !e.cfg.Auth.HideLoginForm || !hasSocialLogin,
-				CreateDefaultPeer:         e.cfg.Core.CreateDefaultPeer,
+				CreateDefaultPeer:         e.cfg.DefaultPeerCreationEnabled(),
 			})
 		}
 	}

internal/app/api/v0/handlers/endpoint_interfaces.go

@@ -33,6 +33,8 @@ type InterfaceService interface {
 	PersistInterfaceConfig(ctx context.Context, id domain.InterfaceIdentifier) error
 	// ApplyPeerDefaults applies the peer defaults to all peers of the given interface.
 	ApplyPeerDefaults(ctx context.Context, in *domain.Interface) error
+	// CreateDefaultPeers creates default peers for all existing users on the given interface.
+	CreateDefaultPeers(ctx context.Context, id domain.InterfaceIdentifier) error
 }
 
 type InterfaceEndpoint struct {
@@ -73,6 +75,7 @@ func (e InterfaceEndpoint) RegisterRoutes(g *routegroup.Bundle) {
 	apiGroup.HandleFunc("GET /config/{id}", e.handleConfigGet())
 	apiGroup.HandleFunc("POST /{id}/save-config", e.handleSaveConfigPost())
 	apiGroup.HandleFunc("POST /{id}/apply-peer-defaults", e.handleApplyPeerDefaultsPost())
+	apiGroup.HandleFunc("POST /{id}/create-default-peers", e.handleCreateDefaultPeersPost())
 
 	apiGroup.HandleFunc("GET /peers/{id}", e.handlePeersGet())
 }
@@ -421,3 +424,34 @@ func (e InterfaceEndpoint) handleApplyPeerDefaultsPost() http.HandlerFunc {
 		respond.Status(w, http.StatusNoContent)
 	}
 }
+
+// handleCreateDefaultPeersPost returns a gorm Handler function.
+//
+// @ID interfaces_handleCreateDefaultPeersPost
+// @Tags Interface
+// @Summary Create default peers for all existing users on the given interface.
+// @Produce json
+// @Param id path string true "The interface identifier"
+// @Success 204 "No content if creating the default peers was successful"
+// @Failure 400 {object} model.Error
+// @Failure 500 {object} model.Error
+// @Router /interface/{id}/create-default-peers [post]
+func (e InterfaceEndpoint) handleCreateDefaultPeersPost() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		id := Base64UrlDecode(request.Path(r, "id"))
+		if id == "" {
+			respond.JSON(w, http.StatusBadRequest,
+				model.Error{Code: http.StatusBadRequest, Message: "missing interface id"})
+			return
+		}
+
+		if err := e.interfaceService.CreateDefaultPeers(r.Context(), domain.InterfaceIdentifier(id)); err != nil {
+			respond.JSON(w, http.StatusInternalServerError, model.Error{
+				Code: http.StatusInternalServerError, Message: err.Error(),
+			})
+			return
+		}
+
+		respond.Status(w, http.StatusNoContent)
+	}
+}