fix(playback): 恢复已删除的观看进度

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/dal/mapper/WatchProgressMapper.java

@@ -4,6 +4,32 @@ package com.fruitshorts.playback.dal.mapper;
 
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import com.fruitshorts.playback.dal.entity.WatchProgress;
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
 
 public interface WatchProgressMapper extends BaseMapper<WatchProgress> {
+
+    /** 含逻辑删除行。唯一索引不区分 deleted，再看同一部剧必须能找回旧行。 */
+    @Select("""
+            SELECT * FROM watch_progress
+            WHERE user_id = #{userId} AND drama_id = #{dramaId}
+            LIMIT 1
+            """)
+    WatchProgress selectAny(@Param("userId") Long userId, @Param("dramaId") Long dramaId);
+
+    /** 恢复并更新。手写 SQL 不带 deleted=0 条件，逻辑删除行也能写回。 */
+    @Update("""
+            UPDATE watch_progress SET
+              deleted = 0,
+              episode_id = #{episodeId},
+              position_ms = #{positionMs},
+              duration_ms = #{durationMs},
+              finished = #{finished},
+              play_count = #{playCount},
+              device_id = #{deviceId},
+              source = #{source}
+            WHERE id = #{id}
+            """)
+    int updateAny(WatchProgress progress);
 }

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/service/WatchProgressService.java

@@ -17,6 +17,7 @@ import com.fruitshorts.playback.dal.mapper.WatchProgressMapper;
 import com.fruitshorts.playback.vo.ProgressRespVO;
 import com.fruitshorts.playback.vo.ProgressSaveReqVO;
 import lombok.RequiredArgsConstructor;
+import org.springframework.dao.DuplicateKeyException;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -58,30 +59,23 @@ public class WatchProgressService {
         boolean finished = Boolean.TRUE.equals(req.getFinished())
                 || (duration > 0 && position + FINISH_THRESHOLD_MS >= duration);
 
-        WatchProgress existing = progressMapper.selectOne(Wrappers.<WatchProgress>lambdaQuery()
-                .eq(WatchProgress::getUserId, userId)
-                .eq(WatchProgress::getDramaId, drama.getId())
-                .last("limit 1"));
-        if (existing == null) {
-            WatchProgress progress = new WatchProgress();
-            progress.setUserId(userId);
-            progress.setDramaId(drama.getId());
-            progress.setEpisodeId(episode.getId());
-            progress.setPositionMs(position);
-            progress.setDurationMs(duration);
-            progress.setFinished(finished ? 1 : 0);
-            progress.setPlayCount(1);
-            progress.setDeviceId(req.getDeviceId() == null ? "" : req.getDeviceId());
-            progress.setSource(req.getSource() == null ? "" : req.getSource());
-            progressMapper.insert(progress);
+        LoadedProgress loaded = loadForSave(userId, drama.getId(), episode, position, duration,
+                finished, req);
+        WatchProgress existing = loaded.progress();
+        if (loaded.created()) {
             appendHistory(userId, drama.getId(), episode.getId(), position, duration,
-                    progress.getSource(), progress.getDeviceId());
-            // updated_at 由触发器维护，回读一次，保证响应与后续 recent 列表口径一致
-            return toResp(progressMapper.selectById(progress.getId()));
+                    existing.getSource(), existing.getDeviceId());
+            return toResp(progressMapper.selectById(existing.getId()));
         }
 
+        boolean hidden = existing.getDeleted() != null && existing.getDeleted() != 0;
         boolean sameEpisode = existing.getEpisodeId() != null
                 && existing.getEpisodeId().equals(episode.getId());
+        if (hidden && sameEpisode) {
+            existing.setPlayCount((existing.getPlayCount() == null ? 0 : existing.getPlayCount()) + 1);
+            appendHistory(userId, drama.getId(), episode.getId(), position, duration,
+                    req.getSource(), existing.getDeviceId());
+        }
         if (!sameEpisode) {
             // 换集：直接采纳新集与新的播放位置
             existing.setEpisodeId(episode.getId());
@@ -103,10 +97,52 @@ public class WatchProgressService {
         }
         existing.setDeviceId(req.getDeviceId() == null ? "" : req.getDeviceId());
         existing.setSource(req.getSource() == null ? "" : req.getSource());
-        progressMapper.updateById(existing);
+        if (hidden) {
+            existing.setDeleted(0);
+            progressMapper.updateAny(existing);
+        } else {
+            progressMapper.updateById(existing);
+        }
         return toResp(progressMapper.selectById(existing.getId()));
     }
 
+    private LoadedProgress loadForSave(Long userId, Long dramaId, DramaEpisode episode, long position,
+                                       long duration, boolean finished, ProgressSaveReqVO req) {
+        WatchProgress existing = progressMapper.selectAny(userId, dramaId);
+        if (existing != null) {
+            return new LoadedProgress(existing, false);
+        }
+        WatchProgress created = newProgress(userId, dramaId, episode, position, duration, finished, req);
+        try {
+            progressMapper.insert(created);
+            return new LoadedProgress(created, true);
+        } catch (DuplicateKeyException ex) {
+            WatchProgress raced = progressMapper.selectAny(userId, dramaId);
+            if (raced == null) {
+                throw ex;
+            }
+            return new LoadedProgress(raced, false);
+        }
+    }
+
+    private WatchProgress newProgress(Long userId, Long dramaId, DramaEpisode episode, long position,
+                                      long duration, boolean finished, ProgressSaveReqVO req) {
+        WatchProgress progress = new WatchProgress();
+        progress.setUserId(userId);
+        progress.setDramaId(dramaId);
+        progress.setEpisodeId(episode.getId());
+        progress.setPositionMs(position);
+        progress.setDurationMs(duration);
+        progress.setFinished(finished ? 1 : 0);
+        progress.setPlayCount(1);
+        progress.setDeviceId(req.getDeviceId() == null ? "" : req.getDeviceId());
+        progress.setSource(req.getSource() == null ? "" : req.getSource());
+        return progress;
+    }
+
+    private record LoadedProgress(WatchProgress progress, boolean created) {
+    }
+
     public ProgressRespVO ofDrama(Long userId, Long dramaId) {
         WatchProgress progress = progressMapper.selectOne(Wrappers.<WatchProgress>lambdaQuery()
                 .eq(WatchProgress::getUserId, userId)
@@ -185,6 +221,7 @@ public class WatchProgressService {
                 vo.setDramaTitle(drama.getTitle());
                 vo.setDramaCover(drama.getCoverUrl());
                 vo.setTotalEpisodes(drama.getTotalEpisodes());
+                vo.setViewCount(drama.getViewCount());
             }
             DramaEpisode episode = episodeById.get(progress.getEpisodeId());
             if (episode != null) {

fruitshorts-module-playback/src/main/java/com/fruitshorts/playback/vo/ProgressRespVO.java

@@ -20,6 +20,8 @@ public class ProgressRespVO {
     private Integer episodeNumber;
     /** 短剧总集数；短剧不存在时为空。 */
     private Integer totalEpisodes;
+    /** 短剧热度，取 drama.view_count。不是用户自己的播放次数。 */
+    private Long viewCount;
     private Long positionMs;
     private Long durationMs;
     private Boolean finished;