feat: 新增剧集封面、集数管理与上传优化功能

1. 新增Cover实体类并注册到数据库模块
2. 为剧集添加总集数字段及自动创建集数槽功能
3. 新增管理员更新剧集集数接口
4. 优化发布剧集列表：支持标题过滤与默认分页大小10
5. 扩展MediaUploadJob实体字段，完善媒体上传流程
6. 重构订单与媒体服务，新增数据库持久化支持
7. 新增剧集标题过滤的端到端测试用例

src/modules/dramas/dramas.service.ts

@@ -6,7 +6,7 @@ import {
   UnprocessableEntityException,
 } from '@nestjs/common';
 import { InjectDataSource } from '@nestjs/typeorm';
-import { DataSource } from 'typeorm';
+import { DataSource, Like } from 'typeorm';
 import { PaginatedResponse } from '../../common/dto/paginated-response.dto';
 import { ConfigureEpisodesDto } from './dto/configure-episodes.dto';
 import { CreateDramaDto } from './dto/create-drama.dto';
@@ -26,6 +26,10 @@ interface PaginationInput {
   pageSize: number;
 }
 
+interface PublishedDramaListInput extends PaginationInput {
+  title?: string;
+}
+
 @Injectable()
 export class DramasService {
   private dramaSequence = 1;
@@ -40,6 +44,7 @@ export class DramasService {
   ) {}
 
   async createDrama(dto: CreateDramaDto): Promise<DramaRecord> {
+    const { totalEpisodes } = dto;
     if (this.hasDatabase()) {
       const repository = this.dataSource.getRepository(Drama);
       const entity = repository.create({
@@ -61,6 +66,12 @@ export class DramasService {
         onlineVersion: dto.onlineVersion ?? 1,
       });
       const saved = await repository.save(entity);
+      if (totalEpisodes) {
+        await this.configureEpisodes(Number(saved.id), {
+          episodeCount: totalEpisodes,
+        });
+        return this.getDramaOrThrow(Number(saved.id));
+      }
       return this.toDramaRecord(saved, 0, 0);
     }
 
@@ -90,6 +101,10 @@ export class DramasService {
     };
 
     this.dramas.push(drama);
+    if (totalEpisodes) {
+      await this.configureEpisodes(drama.id, { episodeCount: totalEpisodes });
+      return this.getDramaOrThrow(drama.id);
+    }
     return drama;
   }
 
@@ -137,14 +152,23 @@ export class DramasService {
   }
 
   async updateDrama(id: number, dto: UpdateDramaDto): Promise<DramaRecord> {
+    const { totalEpisodes, ...dramaUpdates } = dto;
     if (this.hasDatabase()) {
       const repository = this.dataSource.getRepository(Drama);
       const drama = await repository.findOne({ where: { id } });
       if (!drama) {
         throw new NotFoundException('Drama not found');
       }
-      repository.merge(drama, { ...dto, tags: dto.tags ?? drama.tags });
+      repository.merge(drama, {
+        ...dramaUpdates,
+        tags: dramaUpdates.tags ?? drama.tags,
+      });
       const saved = await repository.save(drama);
+      if (totalEpisodes) {
+        await this.configureEpisodes(Number(saved.id), {
+          episodeCount: totalEpisodes,
+        });
+      }
       return this.toDramaRecordWithCounts(saved);
     }
 
@@ -154,10 +178,13 @@ export class DramasService {
     }
 
     Object.assign(drama, {
-      ...dto,
-      tags: dto.tags ?? drama.tags,
+      ...dramaUpdates,
+      tags: dramaUpdates.tags ?? drama.tags,
       updatedAt: new Date().toISOString(),
     });
+    if (totalEpisodes) {
+      await this.configureEpisodes(drama.id, { episodeCount: totalEpisodes });
+    }
     return this.withEpisodeCounts(drama);
   }
 
@@ -474,6 +501,28 @@ export class DramasService {
     return episode;
   }
 
+  async updateDramaEpisode(
+    dramaId: number,
+    episodeId: number,
+    dto: UpdateEpisodeDto,
+  ): Promise<EpisodeRecord> {
+    if (this.hasDatabase()) {
+      const episode = await this.dataSource.getRepository(Episode).findOne({
+        where: { id: episodeId, dramaId },
+      });
+      if (!episode) {
+        throw new NotFoundException('Episode not found');
+      }
+    } else {
+      const episode = await this.getMemEpisodeOrThrow(episodeId);
+      if (episode.dramaId !== dramaId) {
+        throw new NotFoundException('Episode not found');
+      }
+    }
+
+    return this.updateEpisode(episodeId, { ...dto, dramaId });
+  }
+
   async attachEpisodeMedia(input: {
     episodeId: number;
     byteplusVid: string;
@@ -546,14 +595,18 @@ export class DramasService {
   }
 
   async listPublishedDramas(
-    pagination: PaginationInput,
+    input: PublishedDramaListInput,
   ): Promise<PaginatedResponse<DramaRecord>> {
+    const title = input.title?.trim();
     if (this.hasDatabase()) {
-      const { page, pageSize, skip, take } = this.resolvePagination(pagination);
+      const { page, pageSize, skip, take } = this.resolvePagination(input);
       const [records, total] = await this.dataSource
         .getRepository(Drama)
         .findAndCount({
-          where: { status: PublishStatus.Published },
+          where: {
+            status: PublishStatus.Published,
+            ...(title ? { title: Like(`%${title}%`) } : {}),
+          },
           order: { sortOrder: 'DESC', id: 'DESC' },
           skip,
           take,
@@ -568,9 +621,10 @@ export class DramasService {
       this.sortDramas(
         this.dramas
           .filter((item) => item.status === PublishStatus.Published)
+          .filter((item) => !title || item.title.includes(title))
           .map((drama) => this.withEpisodeCounts(drama)),
       ),
-      pagination,
+      input,
     );
   }