Management API: POST/DELETE /materials/{id}/files (attach.Store, 50 MB, 20 files), DELETE /materials/{id} removes files; download keeps the file name

controllers/api/api.go

@@ -14,6 +14,7 @@ import (
 	"git.golem15.com/golem15/summercms/modules/bouncer"
 	"git.golem15.com/golem15/summercms/modules/phrasebook"
 	"git.golem15.com/golem15/summercms/modules/wire"
+	"gocloud.dev/blob"
 	"gorm.io/gorm"
 )
 
@@ -33,6 +34,9 @@ type Handlers struct {
 	PerPage int
 	// DashboardLimit is the number of sessions and deadlines on /dashboard.
 	DashboardLimit int
+	// Bucket returns the uploads bucket for material files, or nil while
+	// none is published.
+	Bucket func() *blob.Bucket
 	// PublicURL is the absolute base URL of the application
 	// (jz.bm.public_url), used for the calendar feed URL and the links in
 	// it. Empty means the scheme and Host of the request.