package com.ruoyi.cai.util;

import com.ruoyi.cai.enums.version.VersionPlatformEnum;
import com.ruoyi.common.utils.ServletUtils;

import javax.servlet.http.HttpServletRequest;

public class VersionUtil {

    public static String getAppVersion(){
        HttpServletRequest request = ServletUtils.getRequest();
        return request.getHeader("version");
    }

    public static VersionPlatformEnum getVersionPlatform(){
        HttpServletRequest request = ServletUtils.getRequest();
        String sourceId = request.getHeader("source_id");
        if("2".equals(sourceId)){
            return VersionPlatformEnum.IOS;
        }
        return VersionPlatformEnum.ANDROID;
    }

    public static int compareVersion(String v1, String v2) {
        String[] ss1 = v1.split("\\."), ss2 = v2.split("\\.");
        int n = ss1.length, m = ss2.length;
        int i = 0, j = 0;
        while (i < n || j < m) {
            int a = 0, b = 0;
            if (i < n) a = Integer.parseInt(ss1[i++]);
            if (j < m) b = Integer.parseInt(ss2[j++]);
            if (a != b) return a > b ? 1 : -1;
        }
        return 0;
    }
}