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package io.leangen.graphql.spqr.spring.modules.data;

import io.leangen.graphql.annotations.GraphQLQuery;
import io.leangen.graphql.annotations.types.GraphQLType;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;

@GraphQLType(name = "Pageable")
public class Pagination {

    @GraphQLQuery
    public int pageNumber;
    @GraphQLQuery
    public Integer pageSize;
    @GraphQLQuery
    public Sorting sort;

    public Pagination() {
    }

    Pagination(Pageable pageable) {
        this.pageNumber = pageable.getPageNumber();
        this.pageSize = pageable.getPageSize();
        this.sort = new Sorting(pageable.getSort());
    }

    Pageable toPageable() {
        if (pageSize == Integer.MAX_VALUE) {
            return Pageable.unpaged();
        }
        return PageRequest.of(pageNumber, pageSize, sort != null ? sort.toSort() : Sort.unsorted());
    }
}