Notifications (#34)

Notifications working for:

* Mentions
* Faves
* New follow requests
* New followers

internal/federation/federatingdb/inbox.go

@@ -0,0 +1,73 @@
+package federatingdb
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	"github.com/go-fed/activity/pub"
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+// InboxContains returns true if the OrderedCollection at 'inbox'
+// contains the specified 'id'.
+//
+// The library makes this call only after acquiring a lock first.
+func (f *federatingDB) InboxContains(c context.Context, inbox, id *url.URL) (contains bool, err error) {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func": "InboxContains",
+			"id":   id.String(),
+		},
+	)
+	l.Debugf("entering INBOXCONTAINS function with for inbox %s and id %s", inbox.String(), id.String())
+
+	if !util.IsInboxPath(inbox) {
+		return false, fmt.Errorf("%s is not an inbox URI", inbox.String())
+	}
+
+	activityI := c.Value(util.APActivity)
+	if activityI == nil {
+		return false, fmt.Errorf("no activity was set for id %s", id.String())
+	}
+	activity, ok := activityI.(pub.Activity)
+	if !ok || activity == nil {
+		return false, fmt.Errorf("could not parse contextual activity for id %s", id.String())
+	}
+
+	l.Debugf("activity type %s for id %s", activity.GetTypeName(), id.String())
+
+	return false, nil
+}
+
+// GetInbox returns the first ordered collection page of the outbox at
+// the specified IRI, for prepending new items.
+//
+// The library makes this call only after acquiring a lock first.
+func (f *federatingDB) GetInbox(c context.Context, inboxIRI *url.URL) (inbox vocab.ActivityStreamsOrderedCollectionPage, err error) {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func": "GetInbox",
+		},
+	)
+	l.Debugf("entering GETINBOX function with inboxIRI %s", inboxIRI.String())
+	return streams.NewActivityStreamsOrderedCollectionPage(), nil
+}
+
+// SetInbox saves the inbox value given from GetInbox, with new items
+// prepended. Note that the new items must not be added as independent
+// database entries. Separate calls to Create will do that.
+//
+// The library makes this call only after acquiring a lock first.
+func (f *federatingDB) SetInbox(c context.Context, inbox vocab.ActivityStreamsOrderedCollectionPage) error {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func": "SetInbox",
+		},
+	)
+	l.Debug("entering SETINBOX function")
+	return nil
+}