feat: 添加爬虫统计信息页面和功能

新增爬虫统计信息页面，展示各来源的爬取数量、最新更新时间、错误信息等统计指标
后端添加爬虫统计信息存储和查询接口，记录每次爬取的结果
支持按关键词过滤招标信息查询

src/app.module.ts

@@ -17,7 +17,7 @@ import { AiModule } from './ai/ai.module';
     ScheduleModule.forRoot(),
     ServeStaticModule.forRoot({
       rootPath: join(__dirname, '..', 'frontend', 'dist'),
-      exclude: ['/api/(.*)'],
+      exclude: ['/api/:path(*)'],
     }),
     LoggerModule,
     DatabaseModule,

src/bids/controllers/bid.controller.ts

@@ -26,7 +26,13 @@ export class BidsController {
   }
 
   @Get('by-date-range')
-  getByDateRange(@Query('startDate') startDate: string, @Query('endDate') endDate: string) {
-    return this.bidsService.getBidsByDateRange(startDate, endDate);
+  getByDateRange(@Query('startDate') startDate: string, @Query('endDate') endDate?: string, @Query('keywords') keywords?: string) {
+    const keywordsArray = keywords ? keywords.split(',') : undefined;
+    return this.bidsService.getBidsByDateRange(startDate, endDate, keywordsArray);
+  }
+
+  @Get('crawl-info-stats')
+  getCrawlInfoStats() {
+    return this.bidsService.getCrawlInfoAddStats();
   }
 }

src/bids/services/bid.service.ts

@@ -88,7 +88,7 @@ export class BidsService {
       .getMany();
   }
 
-  async getBidsByDateRange(startDate?: string, endDate?: string) {
+  async getBidsByDateRange(startDate?: string, endDate?: string, keywords?: string[]) {
     const qb = this.bidRepository.createQueryBuilder('bid');
 
     if (startDate) {
@@ -103,6 +103,49 @@ export class BidsService {
       qb.andWhere('bid.publishDate <= :endDate', { endDate: end });
     }
 
+    if (keywords && keywords.length > 0) {
+      const keywordConditions = keywords.map((keyword, index) => {
+        return `bid.title LIKE :keyword${index}`;
+      }).join(' OR ');
+      qb.andWhere(`(${keywordConditions})`, keywords.reduce((params, keyword, index) => {
+        params[`keyword${index}`] = `%${keyword}%`;
+        return params;
+      }, {}));
+    }
+
     return qb.orderBy('bid.publishDate', 'DESC').getMany();
   }
+
+  async getCrawlInfoAddStats() {
+    const { InjectRepository } = require('@nestjs/typeorm');
+    const { Repository } = require('typeorm');
+    const { CrawlInfoAdd } = require('../../crawler/entities/crawl-info-add.entity');
+
+    // 获取每个来源的最新一次爬虫记录
+    const query = `
+      SELECT
+        source,
+        count,
+        latestPublishDate,
+        error,
+        createdAt as latestUpdate
+      FROM crawl_info_add
+      WHERE id IN (
+        SELECT MAX(id)
+        FROM crawl_info_add
+        GROUP BY source
+      )
+      ORDER BY source ASC
+    `;
+
+    const results = await this.bidRepository.query(query);
+
+    return results.map((item: any) => ({
+      source: item.source,
+      count: item.count,
+      latestUpdate: item.latestUpdate,
+      latestPublishDate: item.latestPublishDate,
+      error: item.error,
+    }));
+  }
 }

src/crawler/crawler.module.ts

@@ -1,10 +1,12 @@
 import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
 import { BidCrawlerService } from './services/bid-crawler.service';
 import { CrawlerController } from './crawler.controller';
 import { BidsModule } from '../bids/bids.module';
+import { CrawlInfoAdd } from './entities/crawl-info-add.entity';
 
 @Module({
-  imports: [BidsModule],
+  imports: [BidsModule, TypeOrmModule.forFeature([CrawlInfoAdd])],
   controllers: [CrawlerController],
   providers: [BidCrawlerService],
   exports: [BidCrawlerService],

src/crawler/entities/crawl-info-add.entity.ts

@@ -0,0 +1,22 @@
+import { Entity, PrimaryGeneratedColumn, Column, CreateDateColumn } from 'typeorm';
+
+@Entity('crawl_info_add')
+export class CrawlInfoAdd {
+  @PrimaryGeneratedColumn('uuid')
+  id: string;
+
+  @Column()
+  source: string;
+
+  @Column()
+  count: number;
+
+  @Column({ type: 'datetime', nullable: true })
+  latestPublishDate: Date | null;
+
+  @Column({ type: 'text', nullable: true })
+  error: string;
+
+  @CreateDateColumn()
+  createdAt: Date;
+}

src/crawler/services/bid-crawler.service.ts

@@ -1,7 +1,10 @@
 import { Injectable, Logger } from '@nestjs/common';
 import { ConfigService } from '@nestjs/config';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
 import * as puppeteer from 'puppeteer';
 import { BidsService } from '../../bids/services/bid.service';
+import { CrawlInfoAdd } from '../entities/crawl-info-add.entity';
 import { ChdtpCrawler } from './chdtp_target';
 import { ChngCrawler } from './chng_target';
 import { SzecpCrawler } from './szecp_target';
@@ -22,6 +25,8 @@ export class BidCrawlerService {
   constructor(
     private bidsService: BidsService,
     private configService: ConfigService,
+    @InjectRepository(CrawlInfoAdd)
+    private crawlInfoRepository: Repository<CrawlInfoAdd>,
   ) {}
 
   async crawlAll() {
@@ -93,6 +98,14 @@ export class BidCrawlerService {
             zeroDataCrawlers.push(crawler);
           }
 
+          // 获取最新的发布日期
+          const latestPublishDate = results.length > 0
+            ? results.reduce((latest, item) => {
+                const itemDate = new Date(item.publishDate);
+                return itemDate > latest ? itemDate : latest;
+              }, new Date(0))
+            : null;
+
           for (const item of results) {
             await this.bidsService.createOrUpdate({
               title: item.title,
@@ -102,10 +115,16 @@ export class BidCrawlerService {
               unit: '',
             });
           }
+
+          // 保存爬虫统计信息到数据库
+          await this.saveCrawlInfo(crawler.name, results.length, latestPublishDate);
         } catch (err) {
           this.logger.error(`Error crawling ${crawler.name}: ${err.message}`);
           // 记录错误信息
           crawlResults[crawler.name] = { success: 0, error: err.message };
+
+          // 保存错误信息到数据库
+          await this.saveCrawlInfo(crawler.name, 0, null, err.message);
         }
       }
       
@@ -131,6 +150,14 @@ export class BidCrawlerService {
             // 更新统计结果
             crawlResults[crawler.name] = { success: results.length };
 
+            // 获取最新的发布日期
+            const latestPublishDate = results.length > 0
+              ? results.reduce((latest, item) => {
+                  const itemDate = new Date(item.publishDate);
+                  return itemDate > latest ? itemDate : latest;
+                }, new Date(0))
+              : null;
+
             for (const item of results) {
               await this.bidsService.createOrUpdate({
                 title: item.title,
@@ -140,10 +167,16 @@ export class BidCrawlerService {
                 unit: '',
               });
             }
+
+            // 更新爬虫统计信息到数据库
+            await this.saveCrawlInfo(crawler.name, results.length, latestPublishDate);
           } catch (err) {
             this.logger.error(`Error retrying ${crawler.name}: ${err.message}`);
             // 记录错误信息
             crawlResults[crawler.name] = { success: 0, error: err.message };
+
+            // 更新错误信息到数据库
+            await this.saveCrawlInfo(crawler.name, 0, null, err.message);
           }
         }
       }
@@ -184,4 +217,24 @@ export class BidCrawlerService {
       this.logger.log('='.repeat(50));
     }
   }
+
+  private async saveCrawlInfo(
+    source: string,
+    count: number,
+    latestPublishDate: Date | null,
+    error?: string,
+  ) {
+    try {
+      const crawlInfo = this.crawlInfoRepository.create({
+        source,
+        count,
+        latestPublishDate,
+        error,
+      });
+      await this.crawlInfoRepository.save(crawlInfo);
+      this.logger.log(`Saved crawl info for ${source}: ${count} items`);
+    } catch (err) {
+      this.logger.error(`Failed to save crawl info for ${source}: ${err.message}`);
+    }
+  }
 }