# All files / modules/search search.controller.ts

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     import Router from '@koa/router';
    import { searchService } from './search.service';

    const router = new Router();

    /**
     * 搜索音频
     * GET /api/search?q=关键词
     */
    router.get('/', async (ctx) => {
      try {
        const { q, limit } = ctx.query as { q?: string; limit?: string };

        if (!q || q.trim() === '') {
          ctx.body = {
            code: 0,
            message: 'success',
            data: [],
          };
          return;
        }

        const results = await searchService.searchAudio(q, parseInt(limit || '20'));

        ctx.body = {
          code: 0,
          message: 'success',
          data: results,
        };
      } catch (error: any) {
        ctx.body = {
          code: 400,
          message: error.message || '搜索失败',
        };
      }
    });

    /**
     * 获取热门搜索词
     * GET /api/search/hot
     */
    router.get('/hot', async (ctx) => {
      try {
        const { limit } = ctx.query as { limit?: string };
        const hotSearches = await searchService.getHotSearches(parseInt(limit || '10'));

        ctx.body = {
          code: 0,
          message: 'success',
          data: hotSearches,
        };
      } catch (error: any) {
        ctx.body = {
          code: 400,
          message: error.message || '获取热门搜索失败',
        };
      }
    });

    /**
     * 获取搜索历史
     * GET /api/search/history?userId=1
     */
    router.get('/history', async (ctx) => {
      try {
        const { userId, limit } = ctx.query as { userId?: string; limit?: string };
        const userIdNum = parseInt(userId || '0') || 0;

        const history = await searchService.getSearchHistory(userIdNum, parseInt(limit || '5'));

        ctx.body = {
          code: 0,
          message: 'success',
          data: history,
        };
      } catch (error: any) {
        ctx.body = {
          code: 400,
          message: error.message || '获取搜索历史失败',
        };
      }
    });

    /**
     * 保存搜索历史
     * POST /api/search/history
     */
    router.post('/history', async (ctx) => {
      try {
        const { userId, keyword } = ctx.request.body as { userId?: number; keyword?: string };

        if (!keyword || keyword.trim() === '') {
          ctx.body = {
            code: 400,
            message: '关键词不能为空',
          };
          return;
        }

        const userIdNum = userId || 0;
        await searchService.saveSearchHistory(userIdNum, keyword);

        ctx.body = {
          code: 0,
          message: 'success',
        };
      } catch (error: any) {
        ctx.body = {
          code: 400,
          message: error.message || '保存搜索历史失败',
        };
      }
    });

    /**
     * 删除单条搜索历史
     * DELETE /api/search/history?userId=1&keyword=关键词
     */
    router.delete('/history', async (ctx) => {
      try {
        const { userId, keyword } = ctx.query as { userId?: string; keyword?: string };

        if (!keyword) {
          ctx.body = {
            code: 400,
            message: '关键词不能为空',
          };
          return;
        }

        const userIdNum = parseInt(userId || '0') || 0;
        await searchService.deleteSearchHistoryItem(userIdNum, keyword);

        ctx.body = {
          code: 0,
          message: 'success',
        };
      } catch (error: any) {
        ctx.body = {
          code: 400,
          message: error.message || '删除搜索历史失败',
        };
      }
    });

    /**
     * 清空搜索历史
     * DELETE /api/search/history/all?userId=1
     */
    router.delete('/history/all', async (ctx) => {
      try {
        const { userId } = ctx.query as { userId?: string };
        const userIdNum = parseInt(userId || '0') || 0;

        await searchService.clearSearchHistory(userIdNum);

        ctx.body = {
          code: 0,
          message: 'success',
        };
      } catch (error: any) {
        ctx.body = {
          code: 400,
          message: error.message || '清空搜索历史失败',
        };
      }
    });

    export default router;