feat: 支持外部端点映射与视频元数据扩展

1. 在 MinioConfig 中增加 externalEndpoint 配置，支持将生成的预签名 URL
   内部地址替换为外部访问地址。
2. 更新数据库脚本及查询逻辑，增加视频时长、缩略图 ID 等字段支持，并在
   查询列表时过滤掉作为缩略图存在的冗余记录。
3. 优化图片上传流程，增加压缩失败时的降级处理机制，防止非图片文件导致
   上传中断。

deploy/update_image_info.sql

@@ -0,0 +1,8 @@
+ALTER TABLE `image_info` 
+ADD COLUMN `thumbnail_instance_id` varchar(32) DEFAULT NULL COMMENT '视频缩略图ID',
+ADD COLUMN `duration` bigint DEFAULT NULL COMMENT '视频时长(秒)';ALTER TABLE `story_item`
+ADD COLUMN `video_url` VARCHAR(64) COMMENT '视频文件 Instance ID',
+ADD COLUMN `duration` BIGINT COMMENT '视频时长(秒)',
+ADD COLUMN `thumbnail_url` VARCHAR(64) COMMENT '视频封面 Instance ID';ALTALTER TABLE story_item ADD COLUMN share_id VARCHAR(64) DEFAULT NULL COMMENT '分享ID';ER TABLE `image_info` 
+ADD COLUMN `thumbnail_instance_id` varchar(32) DEFAULT NULL COMMENT '视频缩略图ID',
+ADD COLUMN `duration` bigint DEFAULT NULL COMMENT '视频时长(秒)';

timeline-file-service/src/main/java/com/timeline/file/config/MinioConfig.java

@@ -11,6 +11,7 @@ import org.springframework.context.annotation.Configuration;
 @ConfigurationProperties(prefix = "minio")
 public class MinioConfig {
     private String endpoint;
+    private String externalEndpoint;
     private String accessKey;
     private String secretKey;
     private String bucketName;

timeline-file-service/src/main/java/com/timeline/file/service/impl/FileServiceImpl.java

@@ -90,27 +90,44 @@ public class FileServiceImpl implements FileService {
         }
     }
 
+    private String replaceWithExternalEndpoint(String url) {
+        String externalEndpoint = minioConfig.getExternalEndpoint();
+        if (externalEndpoint != null && !externalEndpoint.isEmpty()) {
+            String internalEndpoint = minioConfig.getEndpoint();
+            // 简单替换：将内部 Endpoint 替换为外部 Endpoint
+            // 注意：MinIO 生成的 URL 肯定以配置的 Endpoint 开头
+            if (url.startsWith(internalEndpoint)) {
+                return url.replaceFirst(java.util.regex.Pattern.quote(internalEndpoint), externalEndpoint);
+            }
+        }
+        return url;
+    }
+
     @Override
     public String generateUploadUrl(String fileName) throws Throwable {
         String userId = currentUserId();
         String bucket = userBucket(userId);
         createUserBucket(userId);
-        return minioClient.getPresignedObjectUrl(
+        String url = minioClient.getPresignedObjectUrl(
                 GetPresignedObjectUrlArgs.builder()
                         .method(Method.PUT)
                         .bucket(bucket)
-                        .object(fileName).build());
+                        .object(fileName)
+                        .expiry(30 * 60) // 30 minutes
+                        .build());
+        return replaceWithExternalEndpoint(url);
     }
 
     @Override
     public String generateDownloadUrl(String fileName) throws Throwable {
         String userId = currentUserId();
         String bucket = userBucket(userId);
-        return minioClient.getPresignedObjectUrl(
+        String url = minioClient.getPresignedObjectUrl(
                 GetPresignedObjectUrlArgs.builder()
                         .method(Method.GET)
                         .bucket(bucket)
                         .object(fileName).build());
+        return replaceWithExternalEndpoint(url);
     }
 
     @Override
@@ -121,13 +138,14 @@ public class FileServiceImpl implements FileService {
         }
         String bucket = userBucket(imageInfo.getUserId());
         // 生成预签名 URL，有效期例如 1 小时
-        return minioClient.getPresignedObjectUrl(
+        String url = minioClient.getPresignedObjectUrl(
                 GetPresignedObjectUrlArgs.builder()
                         .method(Method.GET)
                         .bucket(bucket)
                         .object(imageInfo.getObjectKey())
                         .expiry(3600) // 1小时
                         .build());
+        return replaceWithExternalEndpoint(url);
     }
 
     @Override
@@ -237,7 +255,7 @@ public class FileServiceImpl implements FileService {
                             .bucket(bucket)
                             .object(info.getObjectKey())
                             .build());
-            urls.add(url);
+            urls.add(replaceWithExternalEndpoint(url));
         }
         return urls;
     }
@@ -267,20 +285,39 @@ public class FileServiceImpl implements FileService {
             log.info("当前文件已存在，不进行minio文件上传");
         } else {
             // 1. 上传到 MinIO
-            // 对原图进行压缩
+            // 尝试对原图进行压缩
             ByteArrayOutputStream compressedOutputStream = new ByteArrayOutputStream();
+            boolean compressionSuccess = false;
+            try {
                 Thumbnails.of(image.getInputStream())
                         .scale(1.0) // 保持原图尺寸
                         .outputQuality(0.8) // 设置压缩质量
                         .toOutputStream(compressedOutputStream);
-            ByteArrayInputStream compressedInputStream = new ByteArrayInputStream(compressedOutputStream.toByteArray());
+                compressionSuccess = true;
+            } catch (Exception e) {
+                log.warn("图片压缩失败（可能是格式不支持或非图片文件），降级为直接上传原图: {}", image.getOriginalFilename(), e);
+            }
 
+            if (compressionSuccess) {
+                ByteArrayInputStream compressedInputStream = new ByteArrayInputStream(
+                        compressedOutputStream.toByteArray());
                 minioClient.putObject(PutObjectArgs.builder()
                         .bucket(bucket)
                         .object(objectKey)
                         .stream(compressedInputStream, compressedInputStream.available(), -1)
                         .contentType(image.getContentType())
                         .build());
+            } else {
+                // 压缩失败，直接上传原图
+                try (InputStream inputStream = image.getInputStream()) {
+                    minioClient.putObject(PutObjectArgs.builder()
+                            .bucket(bucket)
+                            .object(objectKey)
+                            .stream(inputStream, image.getSize(), -1)
+                            .contentType(image.getContentType())
+                            .build());
+                }
+            }
             // 生成并上传低分辨率版本
             try (InputStream inputStream = image.getInputStream()) {
                 ByteArrayOutputStream lowResOutputStream = new ByteArrayOutputStream();
@@ -296,10 +333,10 @@ public class FileServiceImpl implements FileService {
                         .stream(lowResInputStream, lowResInputStream.available(), -1)
                         .contentType(image.getContentType())
                         .build());
-
                 log.info("低分辨率版本已生成并上传: {}", lowResolutionObjectKey);
             } catch (Exception e) {
                 log.error("生成低分辨率版本失败", e);
+                // 低分辨率生成失败不影响主流程
             }
         }
         fileHashMapper.insertFileHash(new FileHash(imageInfo.getInstanceId(), hash));

timeline-file-service/src/main/resources/com/timeline/file/dao/ImageInfoMapper.xml

@@ -22,7 +22,14 @@
     </select>
 
     <select id="selectListByOwnerId" resultType="com.timeline.file.entity.ImageInfo" parameterType="java.util.Map">
-        SELECT * FROM image_info WHERE user_id = #{ownerId} AND is_deleted = 0
+        SELECT * FROM image_info t1
+        WHERE user_id = #{ownerId}
+          AND is_deleted = 0
+          AND NOT EXISTS (
+            SELECT 1 FROM image_info t2
+            WHERE t2.thumbnail_instance_id = t1.instance_id
+              AND t2.is_deleted = 0
+        )
     </select>
 
     <select id="selectByInstanceId" resultType="com.timeline.file.entity.ImageInfo">