API - CRUD for peers, interfaces and users (#340)

Public REST API implementation to handle peers, interfaces and users. It also includes some simple provisioning endpoints.

The Swagger API documentation is available under /api/v1/doc.html

internal/app/api/v1/backend/interface_service.go

@@ -0,0 +1,109 @@
+package backend
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/h44z/wg-portal/internal/config"
+	"github.com/h44z/wg-portal/internal/domain"
+)
+
+type InterfaceServiceInterfaceManagerRepo interface {
+	GetAllInterfacesAndPeers(ctx context.Context) ([]domain.Interface, [][]domain.Peer, error)
+	GetInterfaceAndPeers(ctx context.Context, id domain.InterfaceIdentifier) (*domain.Interface, []domain.Peer, error)
+	CreateInterface(ctx context.Context, in *domain.Interface) (*domain.Interface, error)
+	UpdateInterface(ctx context.Context, in *domain.Interface) (*domain.Interface, []domain.Peer, error)
+	DeleteInterface(ctx context.Context, id domain.InterfaceIdentifier) error
+}
+
+type InterfaceService struct {
+	cfg *config.Config
+
+	interfaces InterfaceServiceInterfaceManagerRepo
+	users      PeerServiceUserManagerRepo
+}
+
+func NewInterfaceService(cfg *config.Config, interfaces InterfaceServiceInterfaceManagerRepo) *InterfaceService {
+	return &InterfaceService{
+		cfg:        cfg,
+		interfaces: interfaces,
+	}
+}
+
+func (s InterfaceService) GetAll(ctx context.Context) ([]domain.Interface, [][]domain.Peer, error) {
+	if err := domain.ValidateAdminAccessRights(ctx); err != nil {
+		return nil, nil, err
+	}
+
+	interfaces, interfacePeers, err := s.interfaces.GetAllInterfacesAndPeers(ctx)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return interfaces, interfacePeers, nil
+}
+
+func (s InterfaceService) GetById(ctx context.Context, id domain.InterfaceIdentifier) (
+	*domain.Interface,
+	[]domain.Peer,
+	error,
+) {
+	if err := domain.ValidateAdminAccessRights(ctx); err != nil {
+		return nil, nil, err
+	}
+
+	interfaceData, interfacePeers, err := s.interfaces.GetInterfaceAndPeers(ctx, id)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return interfaceData, interfacePeers, nil
+}
+
+func (s InterfaceService) Create(ctx context.Context, iface *domain.Interface) (*domain.Interface, error) {
+	if err := domain.ValidateAdminAccessRights(ctx); err != nil {
+		return nil, err
+	}
+
+	createdInterface, err := s.interfaces.CreateInterface(ctx, iface)
+	if err != nil {
+		return nil, err
+	}
+
+	return createdInterface, nil
+}
+
+func (s InterfaceService) Update(ctx context.Context, id domain.InterfaceIdentifier, iface *domain.Interface) (
+	*domain.Interface,
+	[]domain.Peer,
+	error,
+) {
+	if err := domain.ValidateAdminAccessRights(ctx); err != nil {
+		return nil, nil, err
+	}
+
+	if iface.Identifier != id {
+		return nil, nil, fmt.Errorf("interface id mismatch: %s != %s: %w",
+			iface.Identifier, id, domain.ErrInvalidData)
+	}
+
+	updatedInterface, updatedPeers, err := s.interfaces.UpdateInterface(ctx, iface)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return updatedInterface, updatedPeers, nil
+}
+
+func (s InterfaceService) Delete(ctx context.Context, id domain.InterfaceIdentifier) error {
+	if err := domain.ValidateAdminAccessRights(ctx); err != nil {
+		return err
+	}
+
+	err := s.interfaces.DeleteInterface(ctx, id)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}