WIP: enhancements for cs3org/cs3apis#145

Author: glpatcern

changelog/unreleased/appreg-mimetypes.md

@@ -0,0 +1,4 @@
+Enhancement: handle mimetypes and their friendly names
+
+https://github.com/cs3org/cs3apis/pull/145
+https://github.com/cs3org/reva/pull/123456

go.mod

@@ -82,4 +82,5 @@ replace (
 	github.com/eventials/go-tus => github.com/andrewmostello/go-tus v0.0.0-20200314041820-904a9904af9a
 	github.com/oleiade/reflections => github.com/oleiade/reflections v1.0.1
 	google.golang.org/grpc => google.golang.org/grpc v1.26.0 // temporary downgrade
+        github.com/cs3org/go-cs3apis => /home/lopresti/CS3API/build/go-cs3apis
 )

internal/grpc/services/storageprovider/storageprovider.go

@@ -93,7 +93,8 @@ func (c *config) init() {
 		c.AvailableXS = map[string]uint32{"md5": 100, "unset": 1000}
 	}
 	if c.MimeTypes == nil || len(c.MimeTypes) == 0 {
-		c.MimeTypes = map[string]string{".zmd": "application/compressed-markdown"}
+		c.MimeTypes = map[string]string{".zmd": "application/compressed-markdown",
+			".epd": "application/etherpad"}
 	}
 
 }

internal/http/services/appprovider/appprovider.go

@@ -124,16 +124,15 @@ func (s *svc) handleList(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	apps := listRes.Apps
+	filterAppsByUserAgent(apps, r.UserAgent())
 	mimeTypes := listRes.MimeTypes
-	filterAppsByUserAgent(mimeTypes, r.UserAgent())
-
-	filterMimeTypes(mimeTypes)
-
-	if mimeTypes == nil {
-		mimeTypes = make(map[string]*appregistry.AppProviderList) // ensure array empty object instead of null in json
+	res := mapMerge(apps, mimeTypes)
+	if res == nil {
+		res = make(map[string]*appregistry.AppProviderList) // ensure array empty object instead of null in json
 	}
 
-	js, err := json.Marshal(map[string]interface{}{"mime-types": mimeTypes})
+	js, err := json.Marshal(map[string]interface{}{"mime-types": res})
 	if err != nil {
 		ocmd.WriteError(w, r, ocmd.APIErrorServerError, "error marshalling JSON response", err)
 		return
@@ -189,39 +188,31 @@ func (s *svc) handleOpen(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func filterMimeTypes(mimeTypes map[string]*appregistry.AppProviderList) {
-	for m, providers := range mimeTypes {
+func filterAppsByUserAgent(appProviders map[string]*appregistry.AppProviderList, userAgent string) {
+	ua := ua.Parse(userAgent)
+
+	for m, providers := range appProviders {
 		apps := []*appregistry.ProviderInfo{}
 		for _, p := range providers.AppProviders {
 			p.Address = "" // address is internal only and not needed in the client
-			// apps are called by name, so if it has no name you cannot call it. Therefore we should not advertise it.
-			if p.Name != "" {
+			// apps are called by name, so if it has no name it cannot be called and should not be advertised
+			// also filter Desktop-only apps if ua is not Desktop
+			if p.Name != "" && (ua.Desktop || !p.DesktopOnly) {
 				apps = append(apps, p)
 			}
 		}
-		if len(apps) > 0 {
-			mimeTypes[m] = &appregistry.AppProviderList{AppProviders: apps}
-		} else {
-			delete(mimeTypes, m)
-		}
+		appProviders[m] = &appregistry.AppProviderList{AppProviders: apps}
 	}
 }
 
-func filterAppsByUserAgent(mimeTypes map[string]*appregistry.AppProviderList, userAgent string) {
-	ua := ua.Parse(userAgent)
-	if ua.Desktop {
-		return
-	}
-
-	for m, providers := range mimeTypes {
-		apps := []*appregistry.ProviderInfo{}
-		for _, p := range providers.AppProviders {
-			if !p.DesktopOnly {
-				apps = append(apps, p)
-			}
+func mapMerge(ms ...map[string]interface{}) map[string]interface{} {
+	res := map[string]interface{}
+	for _, m := range ms {
+		for k, v := range m {
+			res[k] = append(res[k], v)
 		}
-		mimeTypes[m] = &appregistry.AppProviderList{AppProviders: apps}
 	}
+	return res
 }
 
 func (s *svc) getStatInfo(ctx context.Context, fileID string, client gateway.GatewayAPIClient) (*provider.ResourceInfo, ocmd.APIErrorCode, error) {