package com.ynxbd.common.service.params;

import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.math.BigDecimal;

public class RequestParams {
    private final HttpServletRequest request;

    public RequestParams(HttpServletRequest request) {
        this.request = request;
    }

    protected String getString(String param) {
        String parameter = this.request.getParameter(param);
        if ("".equals(parameter)) {
            return null;
        }
        return parameter;
    }

    protected Integer getInteger(String param) {
        try {
            String val = this.request.getParameter(param);
            return StringUtils.isEmpty(val) ? null : Integer.valueOf(val);
        } catch (Exception e) {
            return null;
        }
    }

    protected Double getDouble(String param) {
        try {
            String val = this.request.getParameter(param);
            return StringUtils.isEmpty(val) ? null : Double.valueOf(val);
        } catch (Exception e) {
            return null;
        }
    }

    protected BigDecimal getBigDecimal(String param) {
        try {
            String val = this.request.getParameter(param);
            return StringUtils.isEmpty(val) ? null : new BigDecimal(val);
        } catch (Exception e) {
            return null;
        }
    }

    protected Boolean getBoolean(String param) {
        try {
            String val = this.request.getParameter(param);
            return StringUtils.isEmpty(val) ? null : Boolean.valueOf(val);
        } catch (Exception e) {
            return null;
        }
    }

}