package com.zx.util;

/**
 * @Author CaesarChang张旭
 * @Date 2020/11/11  8:10 下午
 * @Version 1.0
 */

import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

@Component
public class DateConverterConfig implements Converter<String, Date> {
    private static final List<String> formarts = new ArrayList<>(4);

    static {
        formarts.add("yyyy-MM");
        formarts.add("yyyy-MM-dd");
        formarts.add("yyyy-MM-dd hh:mm");
        formarts.add("yyyy-MM-dd hh:mm:ss");
    }

    @Override
    public Date convert(String source) {
        String value = source.trim();
        if ("".equals(value)) {
            return null;
        }
        if (source.matches("^\\d{4}-\\d{1,2}$")) {
            return parseDate(source, formarts.get(0));
        } else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2}$")) {
            return parseDate(source, formarts.get(1));
        } else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}$")) {
            return parseDate(source, formarts.get(2));
        } else if (source.matches("^\\d{4}-\\d{1,2}-\\d{1,2} {1}\\d{1,2}:\\d{1,2}:\\d{1,2}$")) {
            return parseDate(source, formarts.get(3));
        } else {
            throw new IllegalArgumentException("Invalid boolean value '" + source + "'");
        }
    }

    /*** 格式化日期 * @param dateStr String 字符型日期 * @param format String 格式 * @return Date 日期 */
    public Date parseDate(String dateStr, String format) {
        Date date = null;
        try {
            DateFormat dateFormat = new SimpleDateFormat(format);
            date = dateFormat.parse(dateStr);
        } catch (Exception e) {
        }
        return date;
    }
}