Add Web Push sender (similar to email sender)

internal/api/model/pushnotification.go

@@ -0,0 +1,52 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 model
+
+// PushNotification represents a notification summary delivered to the client by the Web Push server.
+// It does not contain an entire Notification, just the NotificationID and some preview information.
+// It is not used in the client API directly.
+//
+// swagger:model pushNotification
+type PushNotification struct {
+	// NotificationID is the Notification.ID of the referenced Notification.
+	NotificationID string `json:"notification_id"`
+
+	// NotificationType is the Notification.Type of the referenced Notification.
+	NotificationType string `json:"notification_type"`
+
+	// Title is a title for the notification,
+	// generally describing an action taken by a user.
+	Title string `json:"title"`
+
+	// Body is a preview of the notification body,
+	// such as the first line of a status's CW or text,
+	// or the first line of an account bio.
+	Body string `json:"body"`
+
+	// Icon is an image URL that can be displayed with the notification,
+	// normally the account's avatar.
+	Icon string `json:"icon"`
+
+	// PreferredLocale is a BCP 47 language tag for the receiving user's locale.
+	PreferredLocale string `json:"preferred_locale"`
+
+	// AccessToken is the access token associated with the Web Push subscription.
+	// I don't know why this is sent, given that the client should know that already,
+	// but Feditext does use it.
+	AccessToken string `json:"access_token"`
+}