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package cn.wizzer.app.web.commons.utils;

import org.nutz.ioc.loader.annotation.IocBean;
import org.nutz.json.Json;
import org.nutz.json.JsonFormat;
import org.nutz.lang.Strings;
import org.nutz.mvc.Mvcs;

import javax.servlet.http.HttpServletRequest;
import java.util.Random;

/**
 * Created by wizzer on 2018/3/17.
 */
@IocBean
public class StringUtil {
    /**
     * 获取平台后台登陆UID
     *
     * @return
     */
    public static String getPlatformUid() {
        try {
            HttpServletRequest request = Mvcs.getReq();
            if (request != null) {
                return Strings.sNull(request.getSession(true).getAttribute("platform_uid"));
            }
        } catch (Exception e) {

        }
        return "";
    }

    /**
     * 获取平台后台登陆用户名称
     *
     * @return
     */
    public static String getPlatformLoginname() {
        try {
            HttpServletRequest request = Mvcs.getReq();
            if (request != null) {
                return Strings.sNull(request.getSession(true).getAttribute("platform_loginname"));
            }
        } catch (Exception e) {

        }
        return "";
    }

    /**
     * 获取平台后台登陆用户名称
     *
     * @return
     */
    public static String getPlatformUsername() {
        try {
            HttpServletRequest request = Mvcs.getReq();
            if (request != null) {
                return Strings.sNull(request.getSession(true).getAttribute("platform_username"));
            }
        } catch (Exception e) {

        }
        return "";
    }

    /**
     * 去掉URL中?后的路径
     *
     * @param p
     * @return
     */
    public static String getPath(String p) {
        if (Strings.sNull(p).contains("?")) {
            return p.substring(0, p.indexOf("?"));
        }
        return Strings.sNull(p);
    }

    /**
     * 获得父节点ID
     *
     * @param s
     * @return
     */
    public static String getParentId(String s) {
        if (!Strings.isEmpty(s) && s.length() > 4) {
            return s.substring(0, s.length() - 4);
        }
        return "";
    }

    /**
     * 得到n位随机数
     *
     * @param s
     * @return
     */
    public static String getRndNumber(int s) {
        Random ra = new Random();
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < s; i++) {
            sb.append(String.valueOf(ra.nextInt(8)));
        }
        return sb.toString();
    }

    /**
     * 判断是否以字符串开头
     *
     * @param str
     * @param s
     * @return
     */
    public boolean startWith(String str, String s) {
        return Strings.sNull(str).startsWith(Strings.sNull(s));
    }

    /**
     * 判断是否包含字符串
     *
     * @param str
     * @param s
     * @return
     */
    public boolean contains(String str, String s) {
        return Strings.sNull(str).contains(Strings.sNull(s));
    }

    /**
     * 将对象转为JSON字符串（页面上使用）
     *
     * @param obj
     * @return
     */
    public String toJson(Object obj) {
        return Json.toJson(obj, JsonFormat.compact());
    }
}