Notifications (#34)

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internal/federation/federatingdb/delete.go

@@ -0,0 +1,86 @@
+package federatingdb
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/util"
+)
+
+// Delete removes the entry with the given id.
+//
+// Delete is only called for federated objects. Deletes from the Social
+// Protocol instead call Update to create a Tombstone.
+//
+// The library makes this call only after acquiring a lock first.
+func (f *federatingDB) Delete(ctx context.Context, id *url.URL) error {
+	l := f.log.WithFields(
+		logrus.Fields{
+			"func": "Delete",
+			"id":   id.String(),
+		},
+	)
+	l.Debugf("received DELETE id %s", id.String())
+
+	inboxAcctI := ctx.Value(util.APAccount)
+	if inboxAcctI == nil {
+		l.Error("inbox account wasn't set on context")
+		return nil
+	}
+	inboxAcct, ok := inboxAcctI.(*gtsmodel.Account)
+	if !ok {
+		l.Error("inbox account was set on context but couldn't be parsed")
+		return nil
+	}
+
+	fromFederatorChanI := ctx.Value(util.APFromFederatorChanKey)
+	if fromFederatorChanI == nil {
+		l.Error("from federator channel wasn't set on context")
+		return nil
+	}
+	fromFederatorChan, ok := fromFederatorChanI.(chan gtsmodel.FromFederator)
+	if !ok {
+		l.Error("from federator channel was set on context but couldn't be parsed")
+		return nil
+	}
+
+	// in a delete we only get the URI, we can't know if we have a status or a profile or something else,
+	// so we have to try a few different things...
+	where := []db.Where{{Key: "uri", Value: id.String()}}
+
+	s := &gtsmodel.Status{}
+	if err := f.db.GetWhere(where, s); err == nil {
+		// it's a status
+		l.Debugf("uri is for status with id: %s", s.ID)
+		if err := f.db.DeleteByID(s.ID, &gtsmodel.Status{}); err != nil {
+			return fmt.Errorf("Delete: err deleting status: %s", err)
+		}
+		fromFederatorChan <- gtsmodel.FromFederator{
+			APObjectType:     gtsmodel.ActivityStreamsNote,
+			APActivityType:   gtsmodel.ActivityStreamsDelete,
+			GTSModel:         s,
+			ReceivingAccount: inboxAcct,
+		}
+	}
+
+	a := &gtsmodel.Account{}
+	if err := f.db.GetWhere(where, a); err == nil {
+		// it's an account
+		l.Debugf("uri is for an account with id: %s", s.ID)
+		if err := f.db.DeleteByID(a.ID, &gtsmodel.Account{}); err != nil {
+			return fmt.Errorf("Delete: err deleting account: %s", err)
+		}
+		fromFederatorChan <- gtsmodel.FromFederator{
+			APObjectType:     gtsmodel.ActivityStreamsProfile,
+			APActivityType:   gtsmodel.ActivityStreamsDelete,
+			GTSModel:         a,
+			ReceivingAccount: inboxAcct,
+		}
+	}
+
+	return nil
+}