feat：添加日志功能

src/business/admin/admin.controller.ts

@@ -6,22 +6,30 @@
  * - GET  /admin/users                     用户列表（需要管理员Token）
  * - GET  /admin/users/:id                 用户详情（需要管理员Token）
  * - POST /admin/users/:id/reset-password  重置指定用户密码（需要管理员Token）
+ * - GET  /admin/logs/runtime              获取运行日志尾部（需要管理员Token）
  * 
  * @author jianuo
  * @version 1.0.0
  * @since 2025-12-19
  */
 
-import { Body, Controller, Get, HttpCode, HttpStatus, Param, ParseIntPipe, Post, Query, UseGuards, ValidationPipe, UsePipes } from '@nestjs/common';
-import { ApiBearerAuth, ApiBody, ApiOperation, ApiParam, ApiQuery, ApiResponse, ApiTags } from '@nestjs/swagger';
+import { Body, Controller, Get, HttpCode, HttpStatus, Param, Post, Query, UseGuards, ValidationPipe, UsePipes, Res, Logger } from '@nestjs/common';
+import { ApiBearerAuth, ApiBody, ApiOperation, ApiParam, ApiProduces, ApiQuery, ApiResponse, ApiTags } from '@nestjs/swagger';
 import { AdminGuard } from '../../core/guards/admin.guard';
 import { AdminService } from './admin.service';
 import { AdminLoginDto, AdminResetPasswordDto } from '../../dto/admin.dto';
-import { AdminLoginResponseDto, AdminUsersResponseDto, AdminCommonResponseDto, AdminUserResponseDto } from '../../dto/admin_response.dto';
+import { AdminLoginResponseDto, AdminUsersResponseDto, AdminCommonResponseDto, AdminUserResponseDto, AdminRuntimeLogsResponseDto } from '../../dto/admin_response.dto';
+import type { Response } from 'express';
+import * as fs from 'fs';
+import * as path from 'path';
+import { spawn } from 'child_process';
+import { pipeline } from 'stream';
 
 @ApiTags('admin')
 @Controller('admin')
 export class AdminController {
+  private readonly logger = new Logger(AdminController.name);
+
   constructor(private readonly adminService: AdminService) {}
 
   @ApiOperation({ summary: '管理员登录', description: '仅允许 role=9 的账户登录后台' })
@@ -72,4 +80,92 @@ export class AdminController {
   async resetPassword(@Param('id') id: string, @Body() dto: AdminResetPasswordDto) {
     return await this.adminService.resetPassword(BigInt(id), dto.new_password);
   }
+
+  @ApiBearerAuth('JWT-auth')
+  @ApiOperation({ summary: '获取运行日志尾部', description: '从 logs/ 目录读取最近的日志行（默认200行）' })
+  @ApiQuery({ name: 'lines', required: false, description: '返回行数（默认200，最大2000）' })
+  @ApiResponse({ status: 200, description: '获取成功', type: AdminRuntimeLogsResponseDto })
+  @UseGuards(AdminGuard)
+  @Get('logs/runtime')
+  async getRuntimeLogs(@Query('lines') lines?: string) {
+    const parsedLines = lines ? Number(lines) : undefined;
+    return await this.adminService.getRuntimeLogs(parsedLines);
+  }
+
+  @ApiBearerAuth('JWT-auth')
+  @ApiOperation({ summary: '下载全部运行日志', description: '将 logs/ 目录打包为 tar.gz 并下载（需要管理员Token）' })
+  @ApiProduces('application/gzip')
+  @ApiResponse({ status: 200, description: '打包下载成功（tar.gz 二进制流）' })
+  @UseGuards(AdminGuard)
+  @Get('logs/archive')
+  async downloadLogsArchive(@Res() res: Response) {
+    const logDir = this.adminService.getLogDirAbsolutePath();
+
+    if (!fs.existsSync(logDir)) {
+      res.status(404).json({ success: false, message: '日志目录不存在' });
+      return;
+    }
+
+    const stats = fs.statSync(logDir);
+    if (!stats.isDirectory()) {
+      res.status(404).json({ success: false, message: '日志目录不可用' });
+      return;
+    }
+
+    const parentDir = path.dirname(logDir);
+    const baseName = path.basename(logDir);
+    const ts = new Date().toISOString().replace(/[:.]/g, '-');
+    const filename = `logs-${ts}.tar.gz`;
+
+    res.setHeader('Content-Type', 'application/gzip');
+    res.setHeader('Content-Disposition', `attachment; filename="${filename}"`);
+    res.setHeader('Cache-Control', 'no-store');
+
+    const tar = spawn('tar', ['-czf', '-', '-C', parentDir, baseName], {
+      stdio: ['ignore', 'pipe', 'pipe'],
+    });
+
+    tar.stderr.on('data', (chunk: Buffer) => {
+      const msg = chunk.toString('utf8').trim();
+      if (msg) {
+        this.logger.warn(`tar stderr: ${msg}`);
+      }
+    });
+
+    tar.on('error', (err: any) => {
+      this.logger.error('打包日志失败（tar 进程启动失败）', err?.stack || String(err));
+      if (!res.headersSent) {
+        const msg = err?.code === 'ENOENT' ? '服务器缺少 tar 命令，无法打包日志' : '日志打包失败';
+        res.status(500).json({ success: false, message: msg });
+      } else {
+        res.end();
+      }
+    });
+
+    const pipelinePromise = new Promise<void>((resolve, reject) => {
+      pipeline(tar.stdout, res, (err) => (err ? reject(err) : resolve()));
+    });
+
+    const exitPromise = new Promise<void>((resolve, reject) => {
+      tar.on('close', (code) => {
+        if (code === 0) {
+          resolve();
+        } else {
+          reject(new Error(`tar exited with code ${code ?? 'unknown'}`));
+        }
+      });
+    });
+
+    try {
+      await pipelinePromise;
+      await exitPromise;
+    } catch (err) {
+      this.logger.error('打包日志失败（tar 执行或输出失败）', err instanceof Error ? err.stack : String(err));
+      if (!res.headersSent) {
+        res.status(500).json({ success: false, message: '日志打包失败' });
+      } else {
+        res.end();
+      }
+    }
+  }
 }