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/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package bundb
import (
"context"
"github.com/ReneKroon/ttlcache"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/uptrace/bun"
)
type notificationDB struct {
conn *DBConn
cache *ttlcache.Cache
}
func (n *notificationDB) newNotificationQ(i interface{}) *bun.SelectQuery {
return n.conn.
NewSelect().
Model(i).
Relation("OriginAccount").
Relation("TargetAccount").
Relation("Status")
}
func (n *notificationDB) GetNotification(ctx context.Context, id string) (*gtsmodel.Notification, db.Error) {
if notification, cached := n.getNotificationCache(id); cached {
return notification, nil
}
notif := >smodel.Notification{}
err := n.getNotificationDB(ctx, id, notif)
if err != nil {
return nil, err
}
return notif, nil
}
func (n *notificationDB) GetNotifications(ctx context.Context, accountID string, limit int, maxID string, sinceID string) ([]*gtsmodel.Notification, db.Error) {
// Ensure reasonable
if limit < 0 {
limit = 0
}
// Make a guess for slice size
notifications := make([]*gtsmodel.Notification, 0, limit)
q := n.conn.
NewSelect().
Model(¬ifications).
Column("id").
Where("target_account_id = ?", accountID).
Order("id DESC")
if maxID != "" {
q = q.Where("id < ?", maxID)
}
if sinceID != "" {
q = q.Where("id > ?", sinceID)
}
if limit != 0 {
q = q.Limit(limit)
}
err := q.Scan(ctx)
if err != nil {
return nil, n.conn.ProcessError(err)
}
// now we have the IDs, select the notifs one by one
// reason for this is that for each notif, we can instead get it from our cache if it's cached
for i, notif := range notifications {
// Check cache for notification
nn, cached := n.getNotificationCache(notif.ID)
if cached {
notifications[i] = nn
continue
}
// Check DB for notification
err := n.getNotificationDB(ctx, notif.ID, notif)
if err != nil {
return nil, err
}
}
return notifications, nil
}
func (n *notificationDB) getNotificationCache(id string) (*gtsmodel.Notification, bool) {
v, ok := n.cache.Get(id)
if !ok {
return nil, false
}
return v.(*gtsmodel.Notification), true
}
func (n *notificationDB) putNotificationCache(notif *gtsmodel.Notification) {
n.cache.Set(notif.ID, notif)
}
func (n *notificationDB) getNotificationDB(ctx context.Context, id string, dst *gtsmodel.Notification) error {
q := n.newNotificationQ(dst).
Where("notification.id = ?", id)
if err := q.Scan(ctx); err != nil {
return n.conn.ProcessError(err)
}
n.putNotificationCache(dst)
return nil
}
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