package category

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

// CategoryQueries contains the query handlers for the category aggregate.
type CategoryQueries struct {
	repo domain.CategoryRepository
}

// NewCategoryQueries creates a new CategoryQueries handler.
func NewCategoryQueries(repo domain.CategoryRepository) *CategoryQueries {
	return &CategoryQueries{
		repo: repo,
	}
}

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

// ListCategories returns a paginated list of categories.
func (q *CategoryQueries) ListCategories(ctx context.Context, page, pageSize int) (*domain.PaginatedResult[domain.Category], error) {
	return q.repo.List(ctx, page, pageSize)
}