package com.zzg.system.convert.easyExcel;

import com.alibaba.excel.converters.Converter;
import com.alibaba.excel.converters.ReadConverterContext;
import com.alibaba.excel.converters.WriteConverterContext;
import com.alibaba.excel.enums.CellDataTypeEnum;
import com.alibaba.excel.metadata.data.WriteCellData;
import com.zzg.common.utils.StringUtils;

import java.util.Objects;


public class StringConverter implements Converter<String> {

    @Override
    public Class<?> supportJavaTypeKey() {
        return String.class;
    }

    @Override
    public CellDataTypeEnum supportExcelTypeKey() {
        return CellDataTypeEnum.STRING;
    }

    /**
     * 这里读的时候会调用
     *
     * @param context
     * @return
     */
    @Override
    public String convertToJavaData(ReadConverterContext<?> context) {
        if (StringUtils.isNotBlank(context.getReadCellData().getStringValue())) {
            return String.valueOf(context.getReadCellData().getStringValue());
        } else if (Objects.nonNull(context.getReadCellData().getNumberValue())) {
            return String.valueOf(context.getReadCellData().getNumberValue());
        }
        return "";

    }

    /**
     * 这里是写的时候会调用 不用管
     *
     * @return
     */
    @Override
    public WriteCellData<?> convertToExcelData(WriteConverterContext<String> context) {
        return new WriteCellData<>(String.valueOf(context.getValue()));
    }
}