// 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

// Marker represents the last read position within a user's timelines.
type Marker struct {
	// Information about the user's position in the home timeline.
	Home *TimelineMarker `json:"home"`
	// Information about the user's position in their notifications.
	Notifications *TimelineMarker `json:"notifications"`
}

// TimelineMarker contains information about a user's progress through a specific timeline.
type TimelineMarker struct {
	// The ID of the most recently viewed entity.
	LastReadID string `json:"last_read_id"`
	// The timestamp of when the marker was set (ISO 8601 Datetime)
	UpdatedAt string `json:"updated_at"`
	// Used for locking to prevent write conflicts.
	Version string `json:"version"`
}