package com.consum.base.core.utils;
// @formatter:off

import cn.hutool.core.util.ReflectUtil;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import jakarta.servlet.ServletInputStream;import jakarta.servlet.http.HttpServletRequest;import jakarta.servlet.http.HttpServletResponse;import org.springframework.beans.BeanUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.reflect.Field;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * .-~~~~~~~~~-._       _.-~~~~~~~~~-.
 * __.'  @Author     ~.   .~    代码无Bug   `.__
 * .'//     liu.q        \./       (秘籍)      \\`.
 * .'// [916000612@qq.com]  |   欲练神功   引刀自宫  \\`.
 * .'// .-~"""""""~~~~-._     |    _,-~~~~"""""""~-.  \\`.
 * .'//.-"  2019-04-09     `-.  |  .-'     10:48       "-.\\`.
 * .'//______.============-..   \ | /   ..-============.______\\`.
 * .'______________________________\|/______________________________`.
 *
 * @Description :
 */
// @formatter:on
public class CommonUtil {

    /**
     * @Author : liuq
     * @Date : Create in 2018/7/1 上午1:20
     * @Description : 驼峰转下划线
     */
    public static String camel2Underline(String line) {
        if (line == null || "".equals(line)) {
            return "";
        }
        line = String.valueOf(line.charAt(0)).toUpperCase().concat(line.substring(1));
        StringBuffer sb = new StringBuffer(512);
        Pattern pattern = Pattern.compile("[A-Z]([a-z\\d]+)?");
        Matcher matcher = pattern.matcher(line);
        while (matcher.find()) {
            String word = matcher.group();
            sb.append(word.toUpperCase());
            sb.append(matcher.end() == line.length() ? "" : "_");
        }
        return sb.toString();
    }

    /*
     * @Author : liu.q [916000612@qq.com]
     *
     * @Date : 2019-04-29 16:45
     *
     * @Description : 下划线转驼峰
     */
    public static String Underline2camel(String para) {
        StringBuilder result = new StringBuilder();
        String[] a = para.split("_");
        for (String s : a) {
            if (!para.contains("_")) {
                result.append(s);
                continue;
            }
            if (result.length() == 0) {
                result.append(s.toLowerCase());
            } else {
                result.append(s.substring(0, 1).toUpperCase());
                result.append(s.substring(1).toLowerCase());
            }
        }
        return result.toString();
    }

    /**
     * @Author : liu.q
     * @Date : 2019-03-01 09:49
     * @Description : 获取request
     */
    public static HttpServletRequest getRequest() {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes();
        HttpServletRequest request = requestAttributes.getRequest();
        return request;
    }

    /**
     * @Author : liu.q
     * @Date : 2019-03-01 09:49
     * @Description : response
     */
    public static HttpServletResponse getResponse() {
        ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
                .getRequestAttributes();
        HttpServletResponse response = requestAttributes.getResponse();
        return response;
    }


    //    /**
//     * 获取请求参数
//     *
//     * @return
//     */
    public static Map getParameterMap() {
        // 参数Map
        Map properties = CommonUtil.getRequest().getParameterMap();
        // 返回值Map
        Map returnMap = new HashMap();
        Iterator entries = properties.entrySet().iterator();
        Map.Entry entry;
        String name = "";
        String value = "";
        while (entries.hasNext()) {
            entry = (Map.Entry) entries.next();
            name = (String) entry.getKey();
            Object valueObj = entry.getValue();
            if (null == valueObj) {
                continue;
            } else if (valueObj instanceof String[]) {
                String[] values = (String[]) valueObj;
                for (int i = 0; i < values.length; i++) {
                    value = values[i] + ",";
                }
                value = value.substring(0, value.length() - 1);
            } else {
                value = valueObj.toString();
            }
            if ("".equals(value)) {
                continue;
            }
            returnMap.put(name, value);
        }

        // 判断排序asc和desc
        if (returnMap.containsKey("sortOrder") && returnMap.get("sortOrder") != null && returnMap.get("sortOrder") != "") {
            if (!"DESC".equals(convert2Str(returnMap.get("sortOrder")).toUpperCase())
                    && !"ASC".equals(convert2Str(returnMap.get("sortOrder")).toUpperCase())) {
                returnMap.put("sortOrder", "");
            }
        }
        return returnMap;
    }

    private static String convert2Str(Object object) {
        if (object == null) {
            return "";
        }
        if (object instanceof String) {
            return (String) object;
        } else {
            return object.toString();
        }

    }


    private static ObjectMapper mapper = null;

    static {
        mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    }


    public static <T> T getObjFromReq(Class<T> clazz) {
        T t = null;
        try {
            Map parameterMap = getParameterMap();
            String jsonStr = mapper.writeValueAsString(parameterMap);
            t = mapper.readValue(jsonStr, clazz);
            if (t == null) {
                t = clazz.newInstance();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return t;
    }

    public static <T> T getObjFromReqBody(Class<T> clazz) {
        T t = null;
        try {
            String jsonStr = getRequestBody();
            t = mapper.readValue(jsonStr, clazz);
            if (t == null) {
                return clazz.newInstance();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return t;
    }

    public static String getStringFromInputStream(ServletInputStream stream) throws IOException {
        StringBuilder sb = new StringBuilder();
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
            char[] ch = new char[1024];
            int bytesRead;
            while ((bytesRead = reader.read(ch)) != -1) {
                sb.append(ch, 0, bytesRead);
            }
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return sb.toString();
    }

    /**
     * 获取request body值
     *
     * @param
     * @return
     */
    private static String getRequestBody() {
        HttpServletRequest request = getRequest();
        try {
            return getStringFromInputStream(request.getInputStream());
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void copyProperties(Object source, Object target) {
        BeanUtils.copyProperties(source, target);
        Class<?> sourceClass = source.getClass();
        // 获取当前类以及所有父类的字段
        while (sourceClass != null) {
            Field[] fields = sourceClass.getDeclaredFields();
            for (Field field : fields) {
                String fieldName = field.getName();
                if (!fieldName.startsWith("isset_")) {
                    continue;
                }
                try {
                    Object fieldValue = ReflectUtil.getFieldValue(source, field);
                    ReflectUtil.setFieldValue(target, field, fieldValue);
                } catch (Exception e) {
                    System.out.println(e.getMessage());
                }
            }
            sourceClass = sourceClass.getSuperclass();
        }
    }

}