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package com.cybermkd.mongo.validation;

import com.cybermkd.mongo.constraints.Chinese;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

/**
 * 创建人:T-baby
 * 创建日期: 16/8/3
 * 文件描述:
 */
public class ChineseValidator implements ConstraintValidator {

    private boolean value = false;

    @Override
    public void initialize(Chinese chinese) {
        value = chinese.value();
    }

    @Override
    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {

        if (value) {
            return isChinese(s);
        } else {
            return !isChinese(s);
        }

    }

    // 根据Unicode编码判断中文汉字和符号
    private static boolean isChinese(char c) {
        Character.UnicodeBlock ub = Character.UnicodeBlock.of(c);
        if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS
                || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
                || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS
                || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION) {
            return true;
        }
        return false;
    }

    // 判断中文汉字和符号
    public static boolean isChinese(String strName) {
        char[] ch = strName.toCharArray();
        for (int i = 0; i < ch.length; i++) {
            char c = ch[i];
            if (isChinese(c)) {
                return true;
            }
        }
        return false;
    }
}