// 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 db

import (
	"context"

	"code.superseriousbusiness.org/gotosocial/internal/gtsmodel"
	"code.superseriousbusiness.org/gotosocial/internal/paging"
)

// Timeline contains functionality for retrieving home/public/faved etc timelines for an account.
type Timeline interface {
	// GetHomeTimeline returns a slice of statuses from accounts that are followed by the given account id.
	GetHomeTimeline(ctx context.Context, accountID string, page *paging.Page) ([]*gtsmodel.Status, error)

	// GetPublicTimeline fetches the account's PUBLIC timeline -- ie., posts and replies that are public.
	// It will use the given filters and try to return as many statuses as possible up to the limit.
	GetPublicTimeline(ctx context.Context, page *paging.Page) ([]*gtsmodel.Status, error)

	// GetLocalTimeline fetches the account's LOCAL timeline -- i.e. PUBLIC posts by LOCAL users.
	GetLocalTimeline(ctx context.Context, page *paging.Page) ([]*gtsmodel.Status, error)

	// GetFavedTimeline fetches the account's FAVED timeline -- ie., posts and replies that the requesting account has faved.
	// It will use the given filters and try to return as many statuses as possible up to the limit.
	//
	// Note that unlike the other GetTimeline functions, the returned statuses will be arranged by their FAVE id, not the STATUS id.
	// In other words, they'll be returned in descending order of when they were faved by the requesting user, not when they were created.
	//
	// Also note the extra return values, which correspond to the nextMaxID and prevMinID for building Link headers.
	GetFavedTimeline(ctx context.Context, accountID string, maxID string, minID string, limit int) ([]*gtsmodel.Status, string, string, error)

	// GetListTimeline returns a slice of statuses from followed accounts collected within the list with the given listID.
	GetListTimeline(ctx context.Context, listID string, page *paging.Page) ([]*gtsmodel.Status, error)

	// GetTagTimeline returns a slice of public-visibility statuses that use the given tagID.
	GetTagTimeline(ctx context.Context, tagID string, page *paging.Page) ([]*gtsmodel.Status, error)
}