enhancement: add the ability to provide collabora fonts from openCloud

.gitignore

@@ -65,4 +65,10 @@ go.work.sum
 .DS_Store
 
 # example deployments
-**/opencloud-sandbox-*
+**/opencloud-sandbox-*
+
+# web apps
+!./services/web/assets/
+!./services/web/assets/apps/
+!./services/web/assets/apps/collaboration-settings
+!./services/web/assets/apps/collaboration-settings/**

services/collaboration/pkg/collaboration/collaboration.go

@@ -0,0 +1,39 @@
+package collaboration
+
+import (
+	"context"
+	"fmt"
+
+	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
+	userpb "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
+	permissionsapi "github.com/cs3org/go-cs3apis/cs3/permissions/v1beta1"
+	rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
+	revactx "github.com/opencloud-eu/reva/v2/pkg/ctx"
+)
+
+type Permission string
+
+const (
+	PermissionCollaborationManageFonts Permission = "Collaboration.Fonts.Manage"
+)
+
+func CheckPermissions(gatewayClient gateway.GatewayAPIClient, ctx context.Context, permission Permission) (*userpb.User, bool, error) {
+	user, ok := revactx.ContextGetUser(ctx)
+	if !ok {
+		return nil, false, fmt.Errorf("could not get user from context")
+	}
+
+	rsp, err := gatewayClient.CheckPermission(ctx, &permissionsapi.CheckPermissionRequest{
+		Permission: string(permission),
+		SubjectRef: &permissionsapi.SubjectReference{
+			Spec: &permissionsapi.SubjectReference_UserId{
+				UserId: user.GetId(),
+			},
+		},
+	})
+	if err != nil {
+		return user, false, fmt.Errorf("could not check permissions: %w", err)
+	}
+
+	return user, rsp.GetStatus().GetCode() == rpc.Code_CODE_OK, nil
+}

services/collaboration/pkg/command/server.go

@@ -4,27 +4,32 @@ import (
 	"context"
 	"fmt"
 	"net"
+	"net/url"
 	"os/signal"
 	"time"
 
+	"github.com/opencloud-eu/reva/v2/pkg/rgrpc/todo/pool"
+	"github.com/opencloud-eu/reva/v2/pkg/store"
+	"github.com/spf13/afero"
+
+	"github.com/spf13/cobra"
+	"go-micro.dev/v4/selector"
+	microstore "go-micro.dev/v4/store"
+
 	"github.com/opencloud-eu/opencloud/pkg/config/configlog"
 	"github.com/opencloud-eu/opencloud/pkg/log"
 	"github.com/opencloud-eu/opencloud/pkg/registry"
 	"github.com/opencloud-eu/opencloud/pkg/runner"
 	"github.com/opencloud-eu/opencloud/pkg/tracing"
+	"github.com/opencloud-eu/opencloud/pkg/x/io/fsx"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/config"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/config/parser"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/connector"
+	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/font"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/helpers"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/server/debug"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/server/grpc"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/server/http"
-	"github.com/opencloud-eu/reva/v2/pkg/rgrpc/todo/pool"
-	"github.com/opencloud-eu/reva/v2/pkg/store"
-
-	"github.com/spf13/cobra"
-	"go-micro.dev/v4/selector"
-	microstore "go-micro.dev/v4/store"
 )
 
 // Server is the entrypoint for the server command.
@@ -137,6 +142,35 @@ func Server(cfg *config.Config) *cobra.Command {
 			}
 			gr.Add(runner.NewGolangHttpServerRunner(cfg.Service.Name+".debug", debugServer))
 
+			var fontService font.Service
+			{
+				fontFS := afero.NewBasePathFs(fsx.NewOsFs(), cfg.Font.AssetPath)
+				if err := fontFS.MkdirAll("/", 0o755); err != nil {
+					logger.Error().Err(err).Msg("Failed to initialize the fonts directory")
+					return err
+				}
+
+				fontServiceRootURI, err := url.JoinPath(cfg.Commons.OpenCloudURL, "/collaboration/fonts")
+				if err := fontFS.MkdirAll("/", 0o755); err != nil {
+					logger.Error().Err(err).Msg("Failed to build font service root uri")
+					return err
+				}
+
+				service, err := font.NewService(
+					font.ServiceOptions{}.
+						WithFontFS(fontFS).
+						WithRootURI(fontServiceRootURI).
+						WithGatewaySelector(gatewaySelector).
+						WithLogger(logger).
+						WithPreviewText(cfg.Font.PreviewText),
+				)
+				if err != nil {
+					return err
+				}
+
+				fontService = service
+			}
+
 			// start HTTP server
 			httpServer, err := http.Server(
 				http.Adapter(connector.NewHttpAdapter(gatewaySelector, cfg, st, selector.NewSelector(selector.Registry(registry.GetRegistry())))),
@@ -145,6 +179,7 @@ func Server(cfg *config.Config) *cobra.Command {
 				http.Context(ctx),
 				http.TracerProvider(traceProvider),
 				http.Store(st),
+				http.FontService(fontService),
 			)
 			if err != nil {
 				logger.Info().Err(err).Str("transport", "http").Msg("Failed to initialize server")

services/collaboration/pkg/config/config.go

@@ -12,6 +12,7 @@ type Config struct {
 
 	Service Service `yaml:"-"`
 	App     App     `yaml:"app"`
+	Font    Font    `yaml:"font"`
 	Store   Store   `yaml:"store"`
 
 	TokenManager *TokenManager `yaml:"token_manager"`

services/collaboration/pkg/config/defaults/defaultconfig.go

@@ -1,8 +1,10 @@
 package defaults
 
 import (
+	"path/filepath"
 	"time"
 
+	"github.com/opencloud-eu/opencloud/pkg/config/defaults"
 	"github.com/opencloud-eu/opencloud/pkg/shared"
 	"github.com/opencloud-eu/opencloud/pkg/structs"
 	"github.com/opencloud-eu/opencloud/services/collaboration/pkg/config"
@@ -33,6 +35,10 @@ func DefaultConfig() *config.Config {
 				Duration: "12h",
 			},
 		},
+		Font: config.Font{
+			AssetPath:   filepath.Join(defaults.BaseDataPath(), "collaboration/fonts"),
+			PreviewText: "OpenCloud",
+		},
 		Store: config.Store{
 			Store:    "nats-js-kv",
 			Nodes:    []string{"127.0.0.1:9233"},

services/collaboration/pkg/config/font.go

@@ -0,0 +1,6 @@
+package config
+
+type Font struct {
+	AssetPath   string `yaml:"asset_path" env:"COLLABORATION_FONT_ASSET_PATH" desc:"Serve fonts from a path on the filesystem instead of the builtin assets. If not defined, the root directory derives from $OC_BASE_DATA_PATH/web/assets/fonts" introductionVersion:"%%NEXT%%"`
+	PreviewText string `yaml:"preview_text" env:"COLLABORATION_ASSET_APPS_PATH" desc:"The text that will be displayed in the font preview." introductionVersion:"%%NEXT%%"`
+}