package com.xzx.gc.util;

import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class PageQuery<T> implements Serializable {
    private static final long serialVersionUID = -7523359884334787081L;
    public static final String pageFlag = "_page";
    public static final Boolean pageObj;
    public static long DEFAULT_PAGE_SIZE;
    protected List<T> list;
    protected Object paras;
    protected String orderBy;
    protected long pageNumber;
    protected long pageSize;
    protected long totalPage;
    protected long totalRow;
    private transient PageQuery.ParasBuilder parasBuilder;

    public PageQuery() {
        this(1L, (Object)null);
    }

    public PageQuery(long pageNumber) {
        this(pageNumber, (Object)null);
    }

    public PageQuery(long pageNumber, long pageSize) {
        this(pageNumber, (Object)null);
        this.pageSize = pageSize;
    }

    public PageQuery(long pageNumber, long pageSize, Object paras) {
        this(pageNumber, paras);
        this.pageSize = pageSize;
    }

    public PageQuery(long pageNumber, Object paras) {
        this.pageSize = DEFAULT_PAGE_SIZE;
        this.totalRow = -1L;
        this.parasBuilder = new PageQuery.ParasBuilder();
        this.pageNumber = pageNumber;
        this.paras = paras;
    }

    public PageQuery(long pageNumber, Object paras, String userDefinedOrderBy) {
        this.pageSize = DEFAULT_PAGE_SIZE;
        this.totalRow = -1L;
        this.parasBuilder = new PageQuery.ParasBuilder();
        this.pageNumber = pageNumber;
        this.paras = paras;
        this.orderBy = userDefinedOrderBy;
    }

    public PageQuery(long pageNumber, Object paras, long totalRow) {
        this(pageNumber, paras);
        this.totalRow = totalRow;
    }

    public PageQuery(long pageNumber, Object paras, String userDefinedOrderBy, long totalRow) {
        this.pageSize = DEFAULT_PAGE_SIZE;
        this.totalRow = -1L;
        this.parasBuilder = new PageQuery.ParasBuilder();
        this.pageNumber = pageNumber;
        this.paras = paras;
        this.orderBy = userDefinedOrderBy;
        this.totalRow = totalRow;
    }

    public PageQuery(long pageNumber, Object paras, long totalRow, long pageSize) {
        this(pageNumber, paras);
        this.totalRow = totalRow;
        this.pageSize = pageSize;
    }

    public List<T> getList() {
        return this.list;
    }

    public void setList(List list) {
        this.list = list;
    }

    public long getPageNumber() {
        return this.pageNumber;
    }

    public void setPageNumber(long pageNumber) {
        this.pageNumber = pageNumber;
    }

    public long getPageSize() {
        return this.pageSize;
    }

    public void setPageSize(long pageSize) {
        this.pageSize = pageSize;
    }

    public long getTotalPage() {
        this.calcTotalPage();
        return this.totalPage;
    }

    public long getTotalRow() {
        return this.totalRow;
    }

    public void setTotalRow(long totalRow) {
        this.totalRow = totalRow;
    }

    public boolean isFirstPage() {
        return this.pageNumber == 1L;
    }

    public boolean isLastPage() {
        this.calcTotalPage();
        return this.pageNumber == this.totalPage;
    }

    public Object getParas() {
        return this.paras;
    }

    public void setParas(Object paras) {
        this.parasBuilder.setRoot(paras);
        this.paras = this.parasBuilder.build();
    }

    public void setPara(String key, Object value) {
        this.parasBuilder.set(key, value);
        this.paras = this.parasBuilder.build();
    }

    public String getOrderBy() {
        return this.orderBy;
    }

    public void setOrderBy(String orderBy) {
        this.orderBy = orderBy;
    }

    public PageQuery.ParasBuilder parasBuilder() {
        return this.parasBuilder;
    }

    private void calcTotalPage() {
        if (this.totalRow == 0L) {
            this.totalPage = 1L;
        } else if (this.totalRow % this.pageSize == 0L) {
            this.totalPage = this.totalRow / this.pageSize;
        } else {
            this.totalPage = this.totalRow / this.pageSize + 1L;
        }

    }

    @Override
    public int hashCode() {
        boolean prime = true;
        int result = 1;
        result = 31 * result + (this.orderBy == null ? 0 : this.orderBy.hashCode());
        result = 31 * result + (int)(this.pageNumber ^ this.pageNumber >>> 32);
        result = 31 * result + (int)(this.pageSize ^ this.pageSize >>> 32);
        result = 31 * result + (this.paras == null ? 0 : this.paras.hashCode());
        return result;
    }
    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        } else if (obj == null) {
            return false;
        } else if (this.getClass() != obj.getClass()) {
            return false;
        } else {
            PageQuery other = (PageQuery)obj;
            if (this.orderBy == null) {
                if (other.orderBy != null) {
                    return false;
                }
            } else if (!this.orderBy.equals(other.orderBy)) {
                return false;
            }

            if (this.pageNumber != other.pageNumber) {
                return false;
            } else if (this.pageSize != other.pageSize) {
                return false;
            } else if (this.paras == null) {
                return other.paras == null;
            } else {
                return this.paras.equals(other.paras);
            }
        }
    }

    static {
        pageObj = Boolean.TRUE;
        DEFAULT_PAGE_SIZE = 20L;
    }

    public static class ParasBuilder {
        private Object root;
        private Map map = null;

        public ParasBuilder() {
        }

        public Object build() {
            if (this.map != null && this.root != null) {
                this.map.put("_root", this.root);
                return this.map;
            } else if (this.map == null && this.root != null) {
                return this.root;
            } else {
                return this.map != null && this.root == null ? this.map : null;
            }
        }

        public Object getRoot() {
            return this.root;
        }

        public void setRoot(Object o) {
            this.root = o;
        }

        public void set(String key, Object value) {
            if (this.map == null) {
                this.map = new HashMap();
            }

            this.map.put(key, value);
        }
    }
}