package com.zy.system.controller;

import com.core.common.Cools;
import com.core.common.R;
import com.zy.system.entity.license.*;
import de.schlichtherle.license.LicenseContent;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.IOException;
import java.util.Date;

/**
 *
 * 用于生成证书文件，不能放在给客户部署的代码里
 */
@RestController
@RequestMapping("/license")
public class LicenseCreatorController {

    @Value("${license.licensePath}")
    private String licensePath;

    @Autowired
    private LicenseCheckListener licenseCheckListener;

    /**
     * 获取服务器硬件信息
     * @param osName 操作系统类型，如果为空则自动判断
     */
    @RequestMapping(value = "/getServerInfos", produces = {MediaType.APPLICATION_JSON_UTF8_VALUE})
    public LicenseCheck getServerInfos(@RequestParam(value = "osName", required = false) String osName) {
        //操作系统类型
        if (Cools.isEmpty(osName)) {
            osName = System.getProperty("os.name");
        }
        osName = osName.toLowerCase();

        AbstractServerInfos abstractServerInfos = null;

        //根据不同操作系统类型选择不同的数据获取方法
        if (osName.startsWith("windows")) {
            abstractServerInfos = new WindowsServerInfos();
        } else if (osName.startsWith("linux")) {
//            abstractServerInfos = new LinuxServerInfos();
        } else {//其他服务器类型
            abstractServerInfos = new WindowsServerInfos();
        }

        return abstractServerInfos.getServerInfos();
    }

    /**
     * 获取许可证有效期天数
     */
    @RequestMapping(value = "/getLicenseDays")
    public R getLicenseDays() {
        LicenseVerify licenseVerify = new LicenseVerify();
        LicenseContent verifyInfo = licenseVerify.getVerifyInfo();
        if (verifyInfo == null) {
            return R.error();
        }

        Date start = new Date();
        Date end = verifyInfo.getNotAfter();
        Long starTime = start.getTime();
        Long endTime = end.getTime();
        Long num = endTime - starTime;//时间戳相差的毫秒数
        int day = (int) (num / 24 / 60 / 60 / 1000);
        return R.ok().add(day);
    }

    @RequestMapping(value = "/updateLicense")
    public R updateLicense(@RequestParam("file") MultipartFile[] files) {
        MultipartFile file = files[0];

        String licensePathFileName = this.getClass().getClassLoader().getResource(licensePath).getPath();
        File licensePathFile = new File(licensePathFileName);
        //服务器端保存的文件对象
        File serverFile = new File(licensePathFile.getPath());
        if (serverFile.exists()) {
            try {
                serverFile.delete();//存在文件，删除
            } catch (Exception e) {
                e.printStackTrace();
            }
        }

        try {
            //创建文件
            serverFile.createNewFile();
            //将上传的文件写入到服务器端文件内
            file.transferTo(serverFile);
        } catch (IOException e) {
            e.printStackTrace();
        }

        //重新加载许可证
        boolean loadedLicense = licenseCheckListener.loadLicense();
        if (loadedLicense) {
            return R.ok();
        }
        return R.error("许可证更新失败");
    }

}