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package com.pighand.framework.spring.util;

import jakarta.servlet.http.HttpServletRequest;

import java.lang.reflect.Method;
import java.util.*;

/**
 * 公共工具类
 *
 * @author wangshuli
 */
public class CommonUtil {

    /**
     * 通过 HttpServletRequest 返回IP地址
     *
     * @param request
     * @return IP
     */
    public static String getIp(HttpServletRequest request) {
        String[] headers = {"X-Real-IP", "x-forwarded-for", "Proxy-Client-IP", "WL-Proxy-Client-IP", "HTTP_CLIENT_IP",
            "HTTP_X_FORWARDED_FOR"};

        for (String header : headers) {
            String ip = request.getHeader(header);
            if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {
                // 处理x-forwarded-for可能包含多个IP地址的情况
                if (ip.contains(",")) {
                    ip = ip.split(",")[0].trim(); // 取第一个非私有IP地址
                }
                return ip;
            }
        }

        return request.getRemoteAddr();
    }

    /**
     * 设置class的默认值
     *
     * @param clz 要设置值得class
     * @return
     */
    public static Object setDefValue(Class clz) {
        return setDefValue(clz, null);
    }

    /**
     * 设置class的默认值
     *
     * @param clz           要设置值得class
     * @param genericityClz List类型的泛型
     * @return
     */
    public static Object setDefValue(Class clz, Class genericityClz) {
        String clzName = clz.getName();

        if (clzName.equals(Object.class.getName())) {
            return "Object";
        } else if (clzName.equals(String.class.getName())) {
            return "String";
        } else if (clzName.equals(Boolean.class.getName()) || boolean.class.getName().equals(clzName)) {
            return true;
        } else if (clzName.equals(Byte.class.getName()) || clzName.equals(Short.class.getName()) || clzName.equals(
            Integer.class.getName()) || clzName.equals(Long.class.getName()) || byte.class.getName().equals(clzName)
            || short.class.getName().equals(clzName) || int.class.getName().equals(clzName) || long.class.getName()
            .equals(clzName)) {
            return 0;
        } else if (clzName.equals(Float.class.getName()) || clzName.equals(Double.class.getName())) {
            return 0.0;
        } else if (clzName.equals(List.class.getName()) || clzName.equals(ArrayList.class.getName()) || clzName.equals(
            Set.class.getName())) {
            List