start messing about with streaming api

internal/processing/synchronous/streaming/streaming.go

@@ -0,0 +1,45 @@
+package streaming
+
+import (
+	"sync"
+
+	"github.com/gorilla/websocket"
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/internal/typeutils"
+	"github.com/superseriousbusiness/gotosocial/internal/visibility"
+)
+
+// Processor wraps a bunch of functions for processing streaming.
+type Processor interface {
+	// AuthorizeStreamingRequest returns an oauth2 token info in response to an access token query from the streaming API
+	AuthorizeStreamingRequest(accessToken string) (*gtsmodel.Account, error)
+	StreamForAccount(c *websocket.Conn, account *gtsmodel.Account, streamType string) gtserror.WithCode
+}
+
+type processor struct {
+	tc          typeutils.TypeConverter
+	config      *config.Config
+	db          db.DB
+	filter      visibility.Filter
+	log         *logrus.Logger
+	oauthServer oauth.Server
+	streamMap   *sync.Map
+}
+
+// New returns a new status processor.
+func New(db db.DB, tc typeutils.TypeConverter, oauthServer oauth.Server, config *config.Config, log *logrus.Logger) Processor {
+	return &processor{
+		tc:          tc,
+		config:      config,
+		db:          db,
+		filter:      visibility.NewFilter(db, log),
+		log:         log,
+		oauthServer: oauthServer,
+		streamMap:   &sync.Map{},
+	}
+}