Notifications (#34)

Notifications working for:

* Mentions
* Faves
* New follow requests
* New followers

internal/federation/federatingdb/outbox.go

@@ -0,0 +1,71 @@
+package federatingdb
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	"github.com/go-fed/activity/streams"
+	"github.com/go-fed/activity/streams/vocab"
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+// GetOutbox 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) GetOutbox(c context.Context, outboxIRI *url.URL) (inbox vocab.ActivityStreamsOrderedCollectionPage, err error) {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func": "GetOutbox",
+		},
+	)
+	l.Debug("entering GETOUTBOX function")
+
+	return streams.NewActivityStreamsOrderedCollectionPage(), nil
+}
+
+// SetOutbox saves the outbox value given from GetOutbox, 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) SetOutbox(c context.Context, outbox vocab.ActivityStreamsOrderedCollectionPage) error {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func": "SetOutbox",
+		},
+	)
+	l.Debug("entering SETOUTBOX function")
+
+	return nil
+}
+
+// OutboxForInbox fetches the corresponding actor's outbox IRI for the
+// actor's inbox IRI.
+//
+// The library makes this call only after acquiring a lock first.
+func (f *federatingDB) OutboxForInbox(c context.Context, inboxIRI *url.URL) (outboxIRI *url.URL, err error) {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func":     "OutboxForInbox",
+			"inboxIRI": inboxIRI.String(),
+		},
+	)
+	l.Debugf("entering OUTBOXFORINBOX function with inboxIRI %s", inboxIRI.String())
+
+	if !util.IsInboxPath(inboxIRI) {
+		return nil, fmt.Errorf("%s is not an inbox URI", inboxIRI.String())
+	}
+	acct := &gtsmodel.Account{}
+	if err := f.db.GetWhere([]db.Where{{Key: "inbox_uri", Value: inboxIRI.String()}}, acct); err != nil {
+		if _, ok := err.(db.ErrNoEntries); ok {
+			return nil, fmt.Errorf("no actor found that corresponds to inbox %s", inboxIRI.String())
+		}
+		return nil, fmt.Errorf("db error searching for actor with inbox %s", inboxIRI.String())
+	}
+	return url.Parse(acct.OutboxURI)
+}