package feed

import (
	"github.com/pocketbase/dbx"
	"github.com/pocketbase/pocketbase/daos"
	database "htwkalender/service/db"
	localTime "htwkalender/service/functions/time"
	"log"
)

func ClearFeeds(db *daos.Dao, months int, clock localTime.Clock) {
	feeds, err := database.GetAllFeeds(db)
	if err != nil {
		log.Println("CleanFeeds: get all feeds failed")
		return
	}
	for _, feed := range feeds {
		// if retrieved time is older than a half year delete feed
		now := clock.Now()
		feedRetrievedTime := feed.Retrieved.Time()
		timeShift := now.AddDate(0, -months, 0)

		if feedRetrievedTime.Before(timeShift) {
			// delete feed
			sqlResult, err := db.DB().Delete("feeds", dbx.NewExp("id = {:id}", dbx.Params{"id": feed.GetId()})).Execute()
			if err != nil {
				log.Println("CleanFeeds: delete feed " + feed.GetId() + " failed")
				log.Println(err)
				log.Println(sqlResult)
			} else {
				log.Println("CleanFeeds: delete feed " + feed.GetId() + " successful")
			}
		}
	}
}