content: package org.catframework.agileworking.scheduling;
  
  import java.util.Date;
  import java.util.HashSet;
  import java.util.Set;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.catframework.agileworking.domain.Schedule;
  import org.catframework.agileworking.domain.ScheduleRepository;
  import org.catframework.agileworking.domain.User;
  import org.catframework.agileworking.domain.UserRepository;
  import org.catframework.agileworking.utils.DateUtils;
  import org.catframework.agileworking.utils.JsonUtils;
  import org.catframework.agileworking.vo.NotifyMessageTemplate;
  import org.catframework.agileworking.vo.ScheduleVO;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.scheduling.annotation.Scheduled;
  import org.springframework.stereotype.Component;
  import org.springframework.web.client.RestTemplate;
  
  /**
   * 发送会议通知，每60秒轮训一次，在会前 15 分钟发送提醒，目前的实现比较简单仅在内存中增加了缓存来存放已发送的排期.
   * 
   * 提示：目前版本只考虑了单 JVM 环境运行，作业调度未考虑并发的问题，如果运行在集群环境下，需要修改此类.
   * 
   * @author devzzm
   */
  @Component
  public class SendNotifyMessageJob {
  
  	private static final Log logger = LogFactory.getLog(SendNotifyMessageJob.class);
  
  	@Value("${wechat.app-id}")
  	private String appId;
  
  	@Value("${wechat.app-secret}")
  	private String appSecret;
  
  	@Value("${wechat.notify.template-id}")
  	private String templateId;
  
  	@Value("${wecaht.acquire-access-token-url}")
  	private String acquireAccessTokenUrl;
  
  	@Value("${wecaht.send-messag-url}")
  	private String sendMessageUrl;
  
  	@Autowired
  	private ScheduleRepository scheduleRepository;
  
  	@Autowired
  	private UserRepository userRepository;
  
  	private RestTemplate restTemplate = new RestTemplate();
  
  	private Set<Long> cache = new HashSet<>();
  
  	private Date date = DateUtils.parse(DateUtils.format(new Date(), DateUtils.PATTERN_SIMPLE_DATE),
  			DateUtils.PATTERN_SIMPLE_DATE);
  
  	@Scheduled(fixedDelay = 60 * 1000)
  	public void execute() {
  		Date date = DateUtils.parse(DateUtils.format(new Date(), DateUtils.PATTERN_SIMPLE_DATE),
  				DateUtils.PATTERN_SIMPLE_DATE);
  		if (date.compareTo(this.date) > 0) {
  			this.date = date;
  			cache.clear();
  		}
  
  		String accessToken = getAccessToken();
  		scheduleRepository.findByDate(date).forEach(s -> {
  			if (cache.contains(new Long(s.getScheduleId().intValue()))) {
  				return;
  			}
  			if (isNeedSendMessageNow(s)) {
  				doSend(accessToken, s);
  				cache.add(new Long(s.getScheduleId().intValue()));
  			}
  		});
  	}
  
  	private void doSend(String accessToken, ScheduleVO s) {
  		Schedule schedule = scheduleRepository.findOne(new Long(s.getScheduleId().intValue()));
  		User creator = userRepository.findOneByOpenId(s.getOpenId());
  		schedule.getParticipants().stream().forEach(p -> {
  			NotifyMessageTemplate template = new NotifyMessageTemplate(creator, schedule, p, templateId);
  			String result = restTemplate.postForObject(sendMessageUrl, template.toTemplateMessage(), String.class,
  					accessToken);
  			logger.info("send notify message result is :" + result);
  		});
  	}
  
  	/* 会议开始前15分钟开始发送通知. */
  	private boolean isNeedSendMessageNow(ScheduleVO scheduleVO) {
  		long now = System.currentTimeMillis();
  		return (now + 15 * 60 * 1000) > DateUtils.parse(
  				DateUtils.format(scheduleVO.getDate(), DateUtils.PATTERN_SIMPLE_DATE) + " " + scheduleVO.getStartTime(),
  				DateUtils.PATTERN_SIMPLE_DATE + " HH:mm").getTime();
  	}
  
  	private String getAccessToken() {
  		String result = restTemplate.getForObject(acquireAccessTokenUrl, String.class, appId, appSecret);
  		return (String) JsonUtils.decode(result).get("access_token");
  
  	}
  
  	public void setAppId(String appId) {
  		this.appId = appId;
  	}
  
  	public void setAppSecret(String appSecret) {
  		this.appSecret = appSecret;
  	}
  
  	public void setTemplateId(String templateId) {
  		this.templateId = templateId;
  	}
  
  	public void setScheduleRepository(ScheduleRepository scheduleRepository) {
  		this.scheduleRepository = scheduleRepository;
  	}
  
  	public void setUserRepository(UserRepository userRepository) {
  		this.userRepository = userRepository;
  	}
  
  	public void setRestTemplate(RestTemplate restTemplate) {
  		this.restTemplate = restTemplate;
  	}
  }
  