package services

import (
	"encoding/csv"
	"fmt"
	"strings"

	"github.com/pkg/errors"
)

type Member struct {
	Name  string
	Email string
}

func ParseMembersFromBytes(year int, fileBytes []byte) ([]Member, error) {
	reader := csv.NewReader(strings.NewReader(string(fileBytes)))
	records, err := reader.ReadAll()
	if err != nil {
		return nil, errors.Wrap(err, "failed to read CSV from bytes")
	}

	var members []Member
	for i, record := range records {
		if i == 0 {
			continue // Skip the first line (column headers)
		}
		if len(record) < 4 {
			continue
		}
		firstName := record[1]
		lastName := record[2]
		email := record[3]
		members = append(members, Member{
			Name:  fmt.Sprintf("%s %s", firstName, lastName),
			Email: email,
		})
	}

	if len(members) == 0 {
		members = []Member{}
	}

	return members, nil
}