package user

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

// UserQueries contains the query handlers for the user aggregate.
type UserQueries struct {
	repo domain.UserRepository
}

// NewUserQueries creates a new UserQueries handler.
func NewUserQueries(repo domain.UserRepository) *UserQueries {
	return &UserQueries{
		repo: repo,
	}
}

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

// ListUsers returns a paginated list of users.
func (q *UserQueries) ListUsers(ctx context.Context, page, pageSize int) (*domain.PaginatedResult[domain.User], error) {
	return q.repo.List(ctx, page, pageSize)
}

// ListUsersByRole returns a list of users by role.
func (q *UserQueries) ListUsersByRole(ctx context.Context, role domain.UserRole) ([]domain.User, error) {
	return q.repo.ListByRole(ctx, role)
}