package collection

import (
	"context"
	"errors"
	"tercul/internal/domain"
)

// CollectionQueries contains the query handlers for the collection aggregate.
type CollectionQueries struct {
	repo domain.CollectionRepository
}

// NewCollectionQueries creates a new CollectionQueries handler.
func NewCollectionQueries(repo domain.CollectionRepository) *CollectionQueries {
	return &CollectionQueries{
		repo: repo,
	}
}

// GetCollectionByID retrieves a collection by ID.
func (q *CollectionQueries) GetCollectionByID(ctx context.Context, id uint) (*domain.Collection, error) {
	if id == 0 {
		return nil, errors.New("invalid collection ID")
	}
	return q.repo.GetByID(ctx, id)
}