Notifications (#34)

Notifications working for:

* Mentions
* Faves
* New follow requests
* New followers

internal/gtsmodel/notification.go

@@ -0,0 +1,70 @@
+/*
+   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 gtsmodel
+
+import "time"
+
+// Notification models an alert/notification sent to an account about something like a reblog, like, new follow request, etc.
+type Notification struct {
+	// ID of this notification in the database
+	ID string `pg:"type:uuid,default:gen_random_uuid(),pk,notnull"`
+	// Type of this notification
+	NotificationType NotificationType `pg:",notnull"`
+	// Creation time of this notification
+	CreatedAt time.Time `pg:"type:timestamp,notnull,default:now()"`
+	// Which account does this notification target (ie., who will receive the notification?)
+	TargetAccountID string `pg:",notnull"`
+	// Which account performed the action that created this notification?
+	OriginAccountID string `pg:",notnull"`
+	// If the notification pertains to a status, what is the database ID of that status?
+	StatusID string
+	// Has this notification been read already?
+	Read bool
+
+	/*
+		NON-DATABASE fields
+	*/
+
+	// gts model of the target account, won't be put in the database, it's just for convenience when passing the notification around.
+	GTSTargetAccount *Account `pg:"-"`
+	// gts model of the origin account, won't be put in the database, it's just for convenience when passing the notification around.
+	GTSOriginAccount *Account `pg:"-"`
+	// gts model of the relevant status, won't be put in the database, it's just for convenience when passing the notification around.
+	GTSStatus *Status `pg:"-"`
+}
+
+// NotificationType describes the reason/type of this notification.
+type NotificationType string
+
+const (
+	// NotificationFollow -- someone followed you
+	NotificationFollow NotificationType = "follow"
+	// NotificationFollowRequest -- someone requested to follow you
+	NotificationFollowRequest NotificationType = "follow_request"
+	// NotificationMention -- someone mentioned you in their status
+	NotificationMention NotificationType = "mention"
+	// NotificationReblog -- someone boosted one of your statuses
+	NotificationReblog NotificationType = "reblog"
+	// NotifiationFave -- someone faved/liked one of your statuses
+	NotificationFave NotificationType = "favourite"
+	// NotificationPoll -- a poll you voted in or created has ended
+	NotificationPoll NotificationType = "poll"
+	// NotificationStatus -- someone you enabled notifications for has posted a status.
+	NotificationStatus NotificationType = "status"
+)