package logic

import (
	"context"

	"spark-server/internal/pkg/errs"
)

func (s *Service) Get(ctx context.Context, userID, groupID int64) (*View, error) {
	if !s.ready() || userID <= 0 {
		return nil, errs.ErrUnauthorized
	}
	g, err := s.loadActive(ctx, groupID)
	if err != nil {
		return nil, err
	}
	mem, err := s.requireMember(ctx, groupID, userID)
	if err != nil {
		return nil, err
	}
	return viewOf(g, mem.Role), nil
}

func (s *Service) List(ctx context.Context, userID int64, limit int) (*List, error) {
	if !s.ready() || userID <= 0 {
		return nil, errs.ErrUnauthorized
	}
	groups, err := s.repo.ListByUser(ctx, userID, limit)
	if err != nil {
		return nil, err
	}
	items := make([]*View, 0, len(groups))
	for _, g := range groups {
		role := 0
		if mem, err := s.repo.GetMember(ctx, g.ID, userID); err == nil {
			role = mem.Role
		}
		items = append(items, viewOf(g, role))
	}
	return &List{Items: items}, nil
}