package com.example.model;

import java.util.HashMap;
import java.util.Map;

/**
 * 分页请求类
 */
public class PageRequest {
    private int page = 1;
    private int size = 10;
    private Map<String, Object> filters = new HashMap<>();
    private String sortField;
    private String sortOrder;

    public PageRequest() {
    }

    public int getPage() {
        return page;
    }

    public void setPage(int page) {
        this.page = page > 0 ? page : 1;
    }

    public int getSize() {
        return size;
    }

    public void setSize(int size) {
        this.size = size > 0 ? (size <= 100 ? size : 100) : 10;
    }

    public Map<String, Object> getFilters() {
        return filters;
    }

    public void setFilters(Map<String, Object> filters) {
        this.filters = filters != null ? filters : new HashMap<>();
    }

    public String getSortField() {
        return sortField;
    }

    public void setSortField(String sortField) {
        this.sortField = sortField;
    }

    public String getSortOrder() {
        return sortOrder;
    }

    public void setSortOrder(String sortOrder) {
        this.sortOrder = sortOrder;
    }

    /**
     * 获取偏移量
     */
    public int getOffset() {
        return (page - 1) * size;
    }

    /**
     * 获取限制数
     */
    public int getLimit() {
        return size;
    }

    @Override
    public String toString() {
        return "PageRequest{" +
                "page=" + page +
                ", size=" + size +
                ", filters=" + filters +
                ", sortField='" + sortField + '\'' +
                ", sortOrder='" + sortOrder + '\'' +
                '}';
    }
}