# All files / modules/video-generator video-generator.controller.ts

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     /**
     * 视频生成模块 - API 路由控制器
     */

    import Router from '@koa/router';
    import {
      createVideoProject,
      getVideoProjects,
      getVideoProject,
      updateVideoProject,
      deleteVideoProject,
      generateVideoForProject,
      getGenerateProgress,
      getMaterials,
      uploadMaterial,
      deleteMaterial,
      createVideoProjectFromBook,
    } from './video-generator.service';

    const router = new Router();

    // ============ 视频项目管理 ============

    /**
     * GET /api/video/projects
     * 获取视频项目列表
     */
    router.get('/projects', async (ctx) => {
      const query = {
        userId: ctx.query.userId ? Number(ctx.query.userId) : undefined,
        status: ctx.query.status as any,
        page: ctx.query.page ? Number(ctx.query.page) : 1,
        pageSize: ctx.query.pageSize ? Number(ctx.query.pageSize) : 10,
      };

      const result = await getVideoProjects(query);
      ctx.body = { success: true, data: result };
    });

    /**
     * POST /api/video/projects
     * 创建视频项目
     */
    router.post('/projects', async (ctx) => {
      const body = ctx.request.body as any;
      const userId = ctx.state.user?.id;

      const project = await createVideoProject(body, userId);
      ctx.body = { success: true, data: project };
    });

    /**
     * GET /api/video/projects/:id
     * 获取视频项目详情
     */
    router.get('/projects/:id', async (ctx) => {
      const id = Number(ctx.params.id);
      const project = await getVideoProject(id);

      if (!project) {
        ctx.status = 404;
        ctx.body = { success: false, error: '项目不存在' };
        return;
      }

      ctx.body = { success: true, data: project };
    });

    /**
     * PUT /api/video/projects/:id
     * 更新视频项目
     */
    router.put('/projects/:id', async (ctx) => {
      const id = Number(ctx.params.id);
      const body = ctx.request.body as any;

      const project = await updateVideoProject(id, body);

      if (!project) {
        ctx.status = 404;
        ctx.body = { success: false, error: '项目不存在' };
        return;
      }

      ctx.body = { success: true, data: project };
    });

    /**
     * DELETE /api/video/projects/:id
     * 删除视频项目
     */
    router.delete('/projects/:id', async (ctx) => {
      const id = Number(ctx.params.id);
      const success = await deleteVideoProject(id);

      if (!success) {
        ctx.status = 404;
        ctx.body = { success: false, error: '项目不存在' };
        return;
      }

      ctx.body = { success: true };
    });

    // ============ 视频生成 ============

    /**
     * POST /api/video/projects/:id/generate
     * 开始生成视频
     */
    router.post('/projects/:id/generate', async (ctx) => {
      const id = Number(ctx.params.id);
      const result = await generateVideoForProject(id);

      if (!result.success) {
        ctx.status = 400;
        ctx.body = { success: false, error: result.error };
        return;
      }

      ctx.body = {
        success: true,
        data: {
          outputUrl: result.outputUrl,
          duration: result.duration,
          fileSize: result.fileSize,
        },
      };
    });

    /**
     * GET /api/video/projects/:id/status
     * 获取生成状态
     */
    router.get('/projects/:id/status', async (ctx) => {
      const id = Number(ctx.params.id);
      const status = await getGenerateProgress(id);

      ctx.body = { success: true, data: status };
    });

    // ============ 素材管理 ============

    /**
     * GET /api/video/materials
     * 获取素材列表
     */
    router.get('/materials', async (ctx) => {
      const query = {
        userId: ctx.query.userId ? Number(ctx.query.userId) : undefined,
        type: ctx.query.type as any,
        category: ctx.query.category as string,
        page: ctx.query.page ? Number(ctx.query.page) : 1,
        pageSize: ctx.query.pageSize ? Number(ctx.query.pageSize) : 20,
      };

      const result = await getMaterials(query);
      ctx.body = { success: true, data: result };
    });

    /**
     * POST /api/video/materials/upload
     * 上传素材（处理 multipart/form-data 文件上传）
     */
    router.post('/materials/upload', async (ctx) => {
      const userId = ctx.state.user?.id;

      // 处理 multipart form data
      const body = ctx.request.body as any;
      const files = (ctx.request as any).files as any;

      // 获取上传的文件
      const file = files?.file;

      let materialUrl = '';

      if (file) {
        // 文件已上传，url 就是文件的路径
        materialUrl = `/uploads/materials/${file.newFilename || file.filename}`;
      } else if (body.url) {
        // 如果没有文件，使用传入的url
        materialUrl = body.url;
      } else {
        ctx.status = 400;
        ctx.body = { success: false, error: 'No file uploaded' };
        return;
      }

      const material = await uploadMaterial({
        type: body.type || 'image',
        name: body.name || file?.newFilename || 'unnamed',
        url: materialUrl,
        thumbnail: body.thumbnail,
        tags: body.tags ? JSON.parse(body.tags) : [],
        category: body.category,
        duration: body.duration ? Number(body.duration) : undefined,
        size: body.size ? Number(body.size) : undefined,
        width: body.width ? Number(body.width) : undefined,
        height: body.height ? Number(body.height) : undefined,
      }, userId);

      ctx.body = { success: true, data: material };
    });

    /**
     * DELETE /api/video/materials/:id
     * 删除素材
     */
    router.delete('/materials/:id', async (ctx) => {
      const id = Number(ctx.params.id);
      const success = await deleteMaterial(id);

      if (!success) {
        ctx.status = 404;
        ctx.body = { success: false, error: '素材不存在' };
        return;
      }

      ctx.body = { success: true };
    });

    // ============ 快捷入口 ============

    /**
     * POST /api/video/books/:bookId/generate
     * 从书籍生成视频项目
     */
    router.post('/books/:bookId/generate', async (ctx) => {
      const bookId = Number(ctx.params.bookId);
      const userId = ctx.state.user?.id;

      const project = await createVideoProjectFromBook(bookId, userId);

      if (!project) {
        ctx.status = 404;
        ctx.body = { success: false, error: '书籍不存在' };
        return;
      }

      ctx.body = { success: true, data: project };
    });

    export default router;