package store

import (
	"os"

	"git.andreafazzi.eu/andrea/probo/lib/models"
	"github.com/gocarina/gocsv"
)

type ParticipantStore struct {
	*FilterStore[*models.Participant]
}

func NewParticipantStore() *ParticipantStore {
	store := new(ParticipantStore)
	store.FilterStore = NewFilterStore[*models.Participant]()

	return store
}

func (s *ParticipantStore) ImportCSV(path string) ([]*models.Participant, error) {
	file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, os.ModePerm)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	participants := make([]*models.Participant, 0)

	if err := gocsv.UnmarshalFile(file, &participants); err != nil {
		return nil, err
	}

	memParticipants := make([]*models.Participant, 0)

	for _, p := range participants {
		memParticipant, err := s.Create(p)
		if err != nil {
			return nil, err
		}
		memParticipants = append(memParticipants, memParticipant)
	}

	return memParticipants, nil

}

func (s *ParticipantStore) FilterInGroup(group *models.Group, filter map[string]string) []*models.Participant {
	participants := s.ReadAll()

	if filter == nil {
		return participants
	}

	filteredParticipants := s.Filter(participants, func(p *models.Participant) bool {
		for pk, pv := range p.Attributes {
			for fk, fv := range filter {
				if pk == fk && pv == fv {
					return true
				}
			}
		}

		return false
	})

	group.Participants = filteredParticipants

	return group.Participants
}