package com.moral.common.util;

import com.mysql.jdbc.TimeUtil;

import javax.validation.constraints.NotNull;

import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.commons.lang3.Conversion;

/**
 *
 * 功能描述: string 工具类
 * @author: fengxiang
 * @date: 2018/7/30 10:53
 */
public class StringUtils {
	public static final char UNDERLINE = '_';
	public static final String NULL = "null";

    /**
     * 驼峰格式字符串转换为下划线格式字符串
     * 
     * @param param
     * @return
     */
    public static String camelToUnderline(String param) {
        if (param == null || "".equals(param.trim())) {
            return "";
        }
        int len = param.length();
        StringBuilder sb = new StringBuilder(len);
        for (int i = 0; i < len; i++) {
            char c = param.charAt(i);
            if (Character.isUpperCase(c)) {
                sb.append(UNDERLINE);
                sb.append(Character.toLowerCase(c));
            } else {
                sb.append(c);
            }
        }
        return sb.toString();
    }

    
    /**
     * //首字母转大写
     * 
     * @param s
     * @return
     */
    public static String toUpperCaseFirstOne(String s){
        StringBuilder sb = new StringBuilder(s);
        sb.setCharAt(0, Character.toUpperCase(sb.charAt(0)));
        return sb.toString();
    }
	public static boolean isNullOrEmpty(String toTest) {
		return toTest == null || toTest.length() == 0 || NULL.equals(toTest);
	}
	public static Object stringToObject4Type(Class<?> type,String value) throws Exception{
		Object result = value;
		if (type == double.class || type == Double.class) {
			result = Double.parseDouble(value);
		} else if (type == float.class || type == Float.class) {
			result = Float.parseFloat(value);
		} else if (type == long.class || type == Long.class) {
			result = Long.parseLong(value);
		} else if (type == int.class || type == Integer.class) {
			result = Integer.parseInt(value);
		} else if (type == short.class || type == Short.class) {
			result = Short.parseShort(value);
		} else if (type == boolean.class || type == Boolean.class) {
			result = Boolean.parseBoolean(value);
		} else if (type == Date.class) {
			value = value.replace("T", " ");
			SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
			try {
				result = df.parse(value);
			} catch (Exception e) {
				df = new SimpleDateFormat("yyyy-MM-dd HH:mm");
				try {
					result = df.parse(value);
				} catch (ParseException e1) {
					df = new SimpleDateFormat("yyyy-MM-dd");
					try {
						result = df.parse(value);
					} catch (ParseException e2) {
					}
				}
			}
		}
		return result;
	}

	/**
	 *  中英文字符长度控制
	 * @param str
	 * @param maxLength
	 * @return
	 */
	public static String subStringCN(final String str, final int maxLength) {
		if (str == null) {
			return str;
		}
		String suffix = "...";
		int suffixLen = suffix.length();

		final StringBuffer sbuffer = new StringBuffer();
		final char[] chr = str.trim().toCharArray();
		int len = 0;
		for (int i = 0; i < chr.length; i++) {

			if (chr[i] >= 0xa1) {
				len += 2;
			} else {
				len++;
			}
		}

		if(len<=maxLength){
			return str;
		}

		len = 0;
		for (int i = 0; i < chr.length; i++) {

			if (chr[i] >= 0xa1) {
				len += 2;
				if (len + suffixLen > maxLength) {
					break;
				}else {
					sbuffer.append(chr[i]);
				}
			} else {
				len++;
				if (len + suffixLen > maxLength) {
					break;
				}else {
					sbuffer.append(chr[i]);
				}
			}
		}
		sbuffer.append(suffix);
		return sbuffer.toString();
	}
	public static boolean isNumericZidai(String str) {
		for (int i = 0; i < str.length(); i++) {
			//System.out.println(str.charAt(i));
			if (!Character.isDigit(str.charAt(i))) {
				return false;
			}
		}
		return true;
	}

}