backend/src/main/java/nju/seec/helper/controller/response/PageResponse.java

package nju.seec.helper.controller.response;

import lombok.AllArgsConstructor;
import lombok.Data;
import org.springframework.data.domain.Page;

import java.util.List;

/**
 * @author cst
 */
@Data
@AllArgsConstructor
public class PageResponse<T> {
    private List<T> data;
    private PageInfo page;

    public static <T> PageResponse<T> of(Page<T> page) {
        return new PageResponse<>(page.getContent(), PageInfo.of(page.getNumber(), page.getSize(), page.getTotalPages(), page.getNumberOfElements()));
    }

    @Data
    @AllArgsConstructor(staticName = "of")
    public static class PageInfo {
        private int number;
        private int size;
        private int totalPages;
        private int totalElements;
    }
}