feat: add lottery win notification

backend/src/main/java/com/openisle/model/NotificationType.java

@@ -32,6 +32,8 @@ public enum NotificationType {
     REGISTER_REQUEST,
     /** A user redeemed an activity reward */
     ACTIVITY_REDEEM,
+    /** You won a lottery post */
+    LOTTERY_WIN,
     /** You were mentioned in a post or comment */
     MENTION
 }

backend/src/main/java/com/openisle/service/PostService.java

@@ -69,6 +69,8 @@ public class PostService {
     private final EmailSender emailSender;
     private final ApplicationContext applicationContext;
     private final ConcurrentMap<Long, ScheduledFuture<?>> scheduledFinalizations = new ConcurrentHashMap<>();
+    @Value("${app.website-url:https://www.open-isle.com}")
+    private String websiteUrl;
 
     @org.springframework.beans.factory.annotation.Autowired
     public PostService(PostRepository postRepository,
@@ -249,6 +251,8 @@ public class PostService {
                 if (w.getEmail() != null) {
                     emailSender.sendEmail(w.getEmail(), "你中奖了", "恭喜你在抽奖贴 \"" + lp.getTitle() + "\" 中获奖");
                 }
+                notificationService.createNotification(w, NotificationType.LOTTERY_WIN, lp, null, null, lp.getAuthor(), null, null);
+                notificationService.sendCustomPush(w, "你中奖了", String.format("%s/posts/%d", websiteUrl, lp.getId()));
             }
         });
     }