package com.yc.utils;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.yc.action.grid.GtTranInfo;
import com.yc.exception.ApplicationException;
import com.yc.service.grid.GridData;
import org.apache.commons.io.IOUtils;
import org.jetbrains.annotations.NotNull;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Type;
import java.util.Arrays;
import java.util.List;


/**
 * 转换json2java
 *
 * @author 邓文峰
 * 2010-2-24
 **/
public class JOSNUtils {
    public static GTJson fromJosn(String json) {
        Gson gson = new Gson();
        GTJson gt = gson.fromJson(json, new com.google.gson.reflect.TypeToken<GTJson>() {
        }.getType());
        //----增加处理
        gt.process();

        return gt;
    }

    public static GtTranInfo fromJosn2(String json) {
        Gson gson = new Gson();
        GtTranInfo gt = gson.fromJson(json, new com.google.gson.reflect.TypeToken<GtTranInfo>() {
        }.getType());
        //----增加处理
        //gt.process();

        return gt;
    }

    public static PageInfo fromJosnTree(String json) {
        Gson gson = new Gson();
        return gson.fromJson(json, new com.google.gson.reflect.TypeToken<PageInfo>() {
        }.getType());

    }

    /**
     * 处理分页信息
     **/
    public static Page init(HttpServletRequest request) {
        GTJson json = JOSNUtils.fromJosn(request.getParameter("TGData"));// 取得gt-grid返回的信息
        Page page = new Page();
        page.setPageNum(json.getPageInfo().getPageNum());
        page.setPageSize(json.getPageInfo().getPageSize());
        page.setExpr(json.getExpr());
        page.setSql(Array2String(json.getFieldsName()));
        return page;
    }

    public static String prossBase64(String exwhere) {

        try {
            if (exwhere == null) return "";
            byte[] bytes = exwhere.getBytes("utf-8");
            if (EncodeUtil.isArrayByteBase64(bytes)) {
                exwhere = EncodeUtil.base64Decode(exwhere);//base64解密所有请求where参数
                if (exwhere.indexOf("%2B") != -1) {
                    exwhere = exwhere.replaceAll("%2B", "+");//base64编码中包含+ / 等符号 所以要进行处理
                }
                if (exwhere.indexOf("%2F") != -1) {
                    exwhere = exwhere.replaceAll("%2F", "/");
                }
                if (exwhere.indexOf("%3D") != -1) {
                    exwhere = exwhere.replaceAll("%3D", "=");
                }
                return exwhere;
            } else {
                String st = "";
                String orgwhere=exwhere;
                try {
                    if (exwhere.indexOf("+") != -1) {
                        exwhere = exwhere.replaceAll("\\+", "%2B");//包含+ / 等符号 所以要进行处理
                    }
                    if (exwhere.indexOf("/") != -1) {
                        exwhere = exwhere.replaceAll("\\/", "%2F");
                    }
                    st = java.net.URLDecoder.decode(exwhere, "utf-8");
                    return st;
                } catch (Exception e) {
                    return orgwhere;
                }
            }
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            return "";
        }

    }

    /**
     * 处理分页信息
     **/
    public static Page initTree(HttpServletRequest request) {
        String tgData = null;
        if (request.getHeader("x-app-type") != null) {//手机端传过来
            try {
                if ("ionic".equalsIgnoreCase(request.getHeader("x-app-type")))
                    tgData = IOUtils.toString(request.getInputStream(), "utf-8");
                else
                    tgData = prossBase64(request.getParameter("TGData"));
            } catch (IOException e) {
                e.printStackTrace();
                throw new ApplicationException("转换数据出错");
            }
        } else {
            tgData = prossBase64(request.getParameter("TGData"));
        }

        return getPage(request, tgData);
    }

    @NotNull
    public static Page getPage(HttpServletRequest request, String tgData) {
        PageInfo json = JOSNUtils.fromJosnTree(tgData);// 取得gt-grid返回的信息
        Page page = new Page();
        if (json != null) {
            int k = json.getBody() == null ? 0 : json.getBody().get(0).getPos();
            page.setCp(json.getCps() == null ? "" : json.getCps().getCp());
            page.setPageNum(k == 0 ? 1 : k + 1);
            page.setPos(k);
            page.setFirstIndex(request.getParameter("firstIndex")==null?0:Integer.parseInt(request.getParameter("firstIndex")+""));
            page.setFilter("0".equalsIgnoreCase(json.getCutFilter() == null ? "0" : json.getCutFilter().getFilter()) ? "" : json.getCutFilter().getFilter());
            page.setExpr(json.getExprs() == null ? null : json.getExprs().getExpr());
            page.setCssexpr(json.getCssExprs() == null ? null : json.getCssExprs().getcssExpr());
            page.setTipsexpr(json.getTipsExprs() == null ? null : json.getTipsExprs().getTipsexpr());
            page.setOrderBy(getOrderBy(json));
            page.setRowSpan(json.getRowspan() == null ? "" : json.getRowspan());
            page.setExcelTitle(json.getExcelTitle() == null ? "" : json.getExcelTitle());
            page.setFormName(json.getFormName() == null ? "" : json.getFormName());
            String[] s = json.getFields() == null ? null : json.getFields().getFieldsName().split(",");
            page.setSql(Array2String(s));
        }
        return page;
    }

    public static Page setPageInfoData(GridData json) {
        Page page = new Page();
        int k =0;//json.getBody()==null?0:json.getBody().get(0).getPos();
        page.setPageNum(k == 0 ? 1 : k + 1);
        page.setPos(k);
        page.setFilter("");
        page.setExpr(json.expr);
        page.setCssexpr(json.cssexpr);
        page.setOrderBy("");
        String[] s = json.field.split(",");
        page.setSql(Array2String(s));
        return page;
    }

    private static String getOrderBy(PageInfo json) {//转换排序
        String order = "";
        if (json.getCfg().getSortCols().length() == 0) return "";
        String[] cols = json.getCfg().getSortCols().split(",");
        cols = Arrays.stream(cols).filter(x -> !x.equals("_DefaultSort")).toArray(String[]::new);
        String s = json.getCfg().getSortTypes();
        if ("".equalsIgnoreCase(s) || s == null) s = "0";
        String[] types = s.split(",");
        for (int i = 0; i < cols.length; i++) {
            if (i > 0) order += ",";
            order += cols[i].replaceAll("_ycid_", "id") + ("1".equalsIgnoreCase(types[i]) ? " desc" : " asc");

        }
        return order;
    }

    /**
     * 数组转字符串
     **/
    public static String Array2String(String[] s) {
        if (s == null) return "";
        StringBuilder sb = new StringBuilder();
        String temp = "";
        if (s.length > 0) {
            for (String st : s) {
                if (st.indexOf("_expr") > -1 || st.equalsIgnoreCase("G") || st.equalsIgnoreCase("_DefaultSort"))
                    continue;
                if (!st.equalsIgnoreCase(temp)) sb.append("[").append(st).append("],");
                temp = st;
            }
            return sb.length() > 0 ? sb.substring(0, sb.length() - 1) : " * ";//by 11-12-09
        }
        return " * ";
    }

    /**
     * 处理删除对象
     **/
    @SuppressWarnings({"unchecked"})
    public static List del(HttpServletRequest request) {
        Gson gson = new GsonBuilder().setDateFormat(
                "yyyy-MM-dd").disableHtmlEscaping().create();
        GTJson json = gson.fromJson(request.getParameter("_gt_json"), new com.google.gson.reflect.TypeToken<GTJson>() {
        }.getType());// 取得gt-grid返回的信息
        return json.getDeletedRecords();
    }

    public static String toJosn(Page page, Type dataType) {
        StringBuffer sb = new StringBuffer();
        sb.append("<Grid><Body><B  Pos='" + (page.getPos()) + "'>");
        sb.append(JsonUtil.list2Xml(page));
        sb.append("</B></Body></Grid>");
        if (page.getIsCp() == 1) sb.append(";#^#;");
        return sb.toString();

    }

    public static String toJosn38(Page page) {
        StringBuffer sb = new StringBuffer();
        sb.append(JsonUtil.list2Xml2(page));
        return sb.toString();

    }

    /**
     * 处理38,238类型图表功能所需数据
     */
    public static String toJosn38Graph(Page page) {
        StringBuffer sb = new StringBuffer();
        sb.append(JsonUtil.list2json(page.getData()));
        return sb.toString();

    }
}