feat(backend): Add user notifications and public video APIs

video-content/src/main/java/com/nuaa/video/content/controller/VideoController.java

@@ -4,6 +4,7 @@ import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.nuaa.video.common.model.vo.Result;
 import com.nuaa.video.content.dto.*;
 import com.nuaa.video.content.entity.ContentVideo;
+import com.nuaa.video.content.mapper.ContentVideoMapper;
 import com.nuaa.video.content.service.VideoService;
 import com.nuaa.video.content.vo.UploadResultVO;
 import com.nuaa.video.content.vo.VideoInfoVO;
@@ -25,6 +26,7 @@ import org.springframework.web.multipart.MultipartFile;
 public class VideoController {
 
     private final VideoService videoService;
+    private final ContentVideoMapper videoMapper;
 
     /**
      * 上传视频
@@ -50,6 +52,29 @@ public class VideoController {
         return videoService.createVideo(uploadDTO, userId);
     }
 
+    /**
+     * 获取视频详情(公开接口)
+     */
+    @GetMapping("/public/{id}")
+    public Result<VideoInfoVO> getVideoInfoPublic(@PathVariable Long id, HttpServletRequest request) {
+        Long userId = getUserIdFromRequest(request);
+        return videoService.getVideoInfo(id, userId);
+    }
+
+    /**
+     * 获取视频列表(公开接口)
+     */
+    @GetMapping("/public/list")
+    public Result<Page<VideoListVO>> getVideoListPublic(
+            @RequestParam(value = "pageNum", defaultValue = "1") Integer pageNum,
+            @RequestParam(value = "pageSize", defaultValue = "10") Integer pageSize,
+            VideoQueryDTO queryDTO,
+            HttpServletRequest request) {
+        Page<ContentVideo> page = new Page<>(pageNum, pageSize);
+        Long userId = getUserIdFromRequest(request);
+        return videoService.getVideoList(page, queryDTO, userId);
+    }
+
     /**
      * 获取视频详情
      */
@@ -217,6 +242,35 @@ public class VideoController {
         return videoService.reviewVideo(videoId, reviewerId, status, reason);
     }
 
+    /**
+     * 增加视频评论数量
+     */
+    @PostMapping("/count/comment/{videoId}/{count}")
+    public Result<Void> increaseCommentCount(
+            @PathVariable Long videoId,
+            @PathVariable Integer count,
+            HttpServletRequest request) {
+        // 验证权限(实际可以根据需要添加更复杂的权限验证)
+        Long userId = getUserIdFromRequest(request);
+        if (userId == null) {
+            return Result.error("未登录");
+        }
+
+        try {
+            ContentVideo video = videoService.getById(videoId);
+            if (video == null) {
+                return Result.error("视频不存在");
+            }
+
+            // 更新评论数
+            videoMapper.increaseCommentCount(videoId, count);
+            return Result.success();
+        } catch (Exception e) {
+            log.error("增加视频评论数失败，videoId={}，count={}", videoId, count, e);
+            return Result.error("更新视频评论数失败");
+        }
+    }
+
     /**
      * 从请求中获取用户ID
      */

video-user/src/main/java/com/nuaa/video/user/controller/UserNotificationController.java

@@ -10,6 +10,8 @@ import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.*;
 
+import java.time.LocalDateTime;
+
 /**
  * 用户通知控制器
  */
@@ -74,6 +76,62 @@ public class UserNotificationController {
         return userNotificationService.getUnreadNotificationCount(userId);
     }
 
+    /**
+     * 发送用户通知
+     */
+    @PostMapping("/send/{userId}/{type}")
+    public Result<Void> sendNotification(
+            @PathVariable("userId") Long userId,
+            @PathVariable("type") Integer type,
+            @RequestParam(required = false) String content,
+            @RequestParam(required = false) Long relatedId,
+            HttpServletRequest request) {
+        // 验证调用者身份
+        Long currentUserId = getUserIdFromRequest(request);
+        if (currentUserId == null) {
+            return Result.error("未登录");
+        }
+
+        // 创建通知对象
+        UserNotification notification = new UserNotification();
+        notification.setUserId(userId);
+        notification.setType(type);
+
+        // 设置通知内容
+        String notificationContent;
+        if (content != null && !content.isEmpty()) {
+            notificationContent = content;
+        } else {
+            // 根据类型生成默认内容
+            switch (type) {
+                case 1: // 点赞
+                    notificationContent = "有人赞了你的内容";
+                    break;
+                case 2: // 评论
+                    notificationContent = "有人评论了你的内容";
+                    break;
+                case 3: // 关注
+                    notificationContent = "有人关注了你";
+                    break;
+                case 4: // 系统通知
+                    notificationContent = "系统通知";
+                    break;
+                default:
+                    notificationContent = "新通知";
+            }
+        }
+        notification.setContent(notificationContent);
+
+        notification.setRelatedId(relatedId);
+        notification.setIsRead(0); // 未读
+        notification.setCreateTime(LocalDateTime.now());
+
+        // 保存通知
+        userNotificationService.save(notification);
+
+        return Result.success();
+    }
+
     /**
      * 从请求中获取用户ID
      */