//Calendar implementation for the HTWK Leipzig timetable. Evaluation and display of the individual dates in iCal format.
//Copyright (C) 2024 HTWKalender support@htwkalender.de

//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 <https://www.gnu.org/licenses/>.

package ical

import (
	"encoding/json"
	"htwkalender/data-manager/model"
	"htwkalender/data-manager/service/db"

	"github.com/pocketbase/pocketbase"
	"github.com/pocketbase/pocketbase/apis"
)

func CreateIndividualFeed(modules []model.FeedCollection, pb *pocketbase.PocketBase) (string, error) {
	return CreateIndividualFeedWithType(modules, "", "", pb)
}

// CreateIndividualFeedWithType creates a feed with specified type and user
func CreateIndividualFeedWithType(modules []model.FeedCollection, feedType string, userId string, pb *pocketbase.PocketBase) (string, error) {
	var icalFeed model.Feed
	jsonModules, _ := json.Marshal(modules)
	icalFeed.Modules = string(jsonModules)

	// Set feed type (defaults to "student" in SaveFeed if not provided)
	if feedType != "" {
		icalFeed.Type = feedType
	}

	// Set user relation for professor feeds
	if userId != "" {
		icalFeed.User = userId
	}

	collection, dbError := pb.FindCollectionByNameOrId("feeds")
	if dbError != nil {
		return "", apis.NewNotFoundError("Collection could not be found", dbError)
	}

	record, err := db.SaveFeed(icalFeed, collection, pb)
	if err != nil {
		return "", apis.NewNotFoundError("Could not save feed", err)
	}

	return record.Id, nil
}
