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/*
GoToSocial
Copyright (C) 2021 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 pg
import (
"context"
"github.com/go-pg/pg/v10"
"github.com/go-pg/pg/v10/orm"
"github.com/sirupsen/logrus"
"github.com/superseriousbusiness/gotosocial/internal/cache"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
type notificationDB struct {
config *config.Config
conn *pg.DB
log *logrus.Logger
cancel context.CancelFunc
cache cache.Cache
}
func (n *notificationDB) cacheNotification(id string, notification *gtsmodel.Notification) {
if n.cache == nil {
n.cache = cache.New()
}
if err := n.cache.Store(id, notification); err != nil {
n.log.Panicf("notificationDB: error storing in cache: %s", err)
}
}
func (n *notificationDB) notificationCached(id string) (*gtsmodel.Notification, bool) {
if n.cache == nil {
n.cache = cache.New()
return nil, false
}
nI, err := n.cache.Fetch(id)
if err != nil || nI == nil {
return nil, false
}
notification, ok := nI.(*gtsmodel.Notification)
if !ok {
n.log.Panicf("notificationDB: cached interface with key %s was not a notification", id)
}
return notification, true
}
func (n *notificationDB) newNotificationQ(i interface{}) *orm.Query {
return n.conn.Model(i).
Relation("OriginAccount").
Relation("TargetAccount").
Relation("Status")
}
func (n *notificationDB) GetNotification(id string) (*gtsmodel.Notification, db.Error) {
if notification, cached := n.notificationCached(id); cached {
return notification, nil
}
notification := >smodel.Notification{}
q := n.newNotificationQ(notification).
Where("notification.id = ?", id)
err := processErrorResponse(q.Select())
if err == nil && notification != nil {
n.cacheNotification(id, notification)
}
return notification, err
}
func (n *notificationDB) GetNotifications(accountID string, limit int, maxID string, sinceID string) ([]*gtsmodel.Notification, db.Error) {
// begin by selecting just the IDs
notifIDs := []*gtsmodel.Notification{}
q := n.conn.
Model(¬ifIDs).
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 := processErrorResponse(q.Select())
if err != nil {
return nil, 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
notifications := []*gtsmodel.Notification{}
for _, notifID := range notifIDs {
notif, err := n.GetNotification(notifID.ID)
errP := processErrorResponse(err)
if errP != nil {
return nil, errP
}
notifications = append(notifications, notif)
}
return notifications, nil
}
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