/*
   GoToSocial
   Copyright (C) 2021-2022 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 processing

import (
	"context"

	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
	"github.com/superseriousbusiness/gotosocial/internal/log"
	"github.com/superseriousbusiness/gotosocial/internal/oauth"
	"github.com/superseriousbusiness/gotosocial/internal/timeline"
	"github.com/superseriousbusiness/gotosocial/internal/util"
)

func (p *processor) NotificationsGet(ctx context.Context, authed *oauth.Auth, limit int, maxID string, sinceID string) (*apimodel.TimelineResponse, gtserror.WithCode) {
	notifs, err := p.db.GetNotifications(ctx, authed.Account.ID, limit, maxID, sinceID)
	if err != nil {
		return nil, gtserror.NewErrorInternalError(err)
	}

	if len(notifs) == 0 {
		return util.EmptyTimelineResponse(), nil
	}

	timelineables := []timeline.Timelineable{}
	for _, n := range notifs {
		apiNotif, err := p.tc.NotificationToAPINotification(ctx, n)
		if err != nil {
			log.Debugf("got an error converting a notification to api, will skip it: %s", err)
			continue
		}
		timelineables = append(timelineables, apiNotif)
	}

	return util.PackageTimelineableResponse(util.TimelineableResponseParams{
		Items:          timelineables,
		Path:           "api/v1/notifications",
		NextMaxIDValue: timelineables[len(timelineables)-1].GetID(),
		PrevMinIDKey:   "since_id",
		PrevMinIDValue: timelineables[0].GetID(),
		Limit:          limit,
	})
}