package com.estate.expert.admin.domain.common.response;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import org.springframework.data.domain.Page;

import java.util.List;

@ApiModel("分页响应")
@Data
public class PageResp<T> {

    @ApiModelProperty("总页数")
    private int totalPages;

    @ApiModelProperty("总记录数")
    private long totalElements;

    @ApiModelProperty("每页大小")
    private int pageSize;

    @ApiModelProperty("当前页码, 从0开始")
    private int number;

    @ApiModelProperty("数据列表")
    private List<T> list;

    public PageResp(Page<?> page, List<T> list) {
        this.totalPages = page.getTotalPages();
        this.totalElements = page.getTotalElements();
        this.pageSize = page.getSize();
        this.number = page.getNumber();
        this.list = list;
    }

    public PageResp(Page<T> page) {
        this.totalPages = page.getTotalPages();
        this.totalElements = page.getTotalElements();
        this.pageSize = page.getSize();
        this.number = page.getNumber();
        this.list = page.getContent();
    }

    public PageResp(List<T> list) {
        this.list = list;
        this.totalPages = 1;
        this.totalElements = list.size();
        this.pageSize = list.size();
        this.number = 0;
    }

    // of
    public static <T> PageResp<T> of(Page<?> page, List<T> list) {
        return new PageResp<>(page, list);
    }

    // of
    public static <T> PageResp<T> of(Page<T> page) {
        return new PageResp<>(page);
    }

    // of
    public static <T> PageResp<T> of(List<T> list) {
        return new PageResp<>(list);
    }


    // empty
    public static <T> PageResp<T> empty() {
        return new PageResp<>(Page.empty());
    }
}