added filtering and cronjob soft delete for old events

backend/services/EventService.go

@@ -2,11 +2,18 @@ package services
 
 import (
 	"log"
+	"time"
 	"whimsoc/vindn-backend/models"
 	"whimsoc/vindn-backend/repositories"
 	"whimsoc/vindn-backend/utils"
 )
 
+// Events older than this are pure housekeeping — the frontend's display
+// queries already hide anything past its own end_date immediately, so this
+// buffer is just how long a soft-deleted event's detail page (e.g. a
+// bookmarked or shared link) keeps resolving before it's cleaned up too.
+const cleanupAfterDays = 90
+
 func FetchEvents() ([]models.Event, error) {
 	return utils.FetchDataFromAPI()
 }
@@ -36,3 +43,19 @@ func (s *EventService) ImportEvents() error {
 
 	return nil
 }
+
+// CleanupOldEvents soft-deletes events that ended more than
+// cleanupAfterDays ago, so the events table doesn't grow forever — the ODH
+// import only ever upserts and never removes rows on its own.
+func (s *EventService) CleanupOldEvents() error {
+	cutoff := time.Now().AddDate(0, 0, -cleanupAfterDays).Format("2006-01-02")
+
+	affected, err := s.repo.SoftDeleteEndedBefore(cutoff)
+	if err != nil {
+		return err
+	}
+
+	log.Printf("Cleanup: soft-deleted %d event(s) that ended before %s", affected, cutoff)
+
+	return nil
+}