初步实现图床和api功能

.env

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+PORT=3000
+DEBUG=true# 调试日志

.gitignore

@@ -1 +1,13 @@
-/node_modules/
+/tmp
+/out-tsc
+
+/node_modules
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+/.pnp
+.pnp.js
+
+.vscode/*
+/dist/
+/logs/

.idea/.gitignore

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+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/crystelf-core.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.tmp" />
+      <excludeFolder url="file://$MODULE_DIR$/temp" />
+      <excludeFolder url="file://$MODULE_DIR$/tmp" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="Eslint" enabled="true" level="WARNING" enabled_by_default="true" />
+  </profile>
+</component>

.idea/jsLibraryMappings.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptLibraryMappings">
+    <includedPredefinedLibrary name="Node.js Core" />
+  </component>
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/crystelf-core.iml" filepath="$PROJECT_DIR$/.idea/crystelf-core.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

.prettierrc

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+{
+  "semi": true,
+  "singleQuote": true,
+  "printWidth": 100,
+  "tabWidth": 2,
+  "trailingComma": "es5"
+}

README.md

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-# crystelf-core
-晶灵核心服务

app.ts

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-import express from 'express';

package.json

@@ -1,5 +1,22 @@
 {
+  "name": "crystelf-core",
+  "version": "1.0.0",
+  "scripts": {
+    "dev": "ts-node-dev src/main.ts",
+    "start": "node dist/main.js",
+    "build": "tsc"
+  },
   "dependencies": {
-		"express": "^5.1.0"
+    "chalk": "4",
+    "dotenv": "^16.0.0",
+    "express": "^4.18.0"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.0",
+    "@types/mkdirp": "^2.0.0",
+    "@types/node": "^18.0.0",
+    "prettier": "^3.5.3",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^5.0.0"
   }
 }

src/app.ts

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+import express from 'express';
+import logger from './utils/logger';
+import fc from './utils/file';
+import paths from './utils/path';
+import sampleController from './modules/sample/sample.controller';
+import imageController from './modules/image/image.controller';
+
+const apps = {
+  createApp() {
+    const app = express();
+
+    app.use(express.json());
+    app.use('/public', express.static(paths.get('public')));
+    logger.debug(`路由/public挂载成功..`);
+    app.use('/api/sample', sampleController.getRouter());
+    logger.debug(`路由/api/sample挂载成功..`);
+    app.use('/images', imageController.getRouter());
+    logger.debug(`路由/images挂载成功..`);
+    fc.createDir(paths.get('log'));
+    logger.info('晶灵核心初始化成功！');
+    return app;
+  },
+};
+
+export default apps;

src/main.ts

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+import apps from './app';
+import logger from './utils/logger';
+
+const PORT = process.env.PORT || 3000;
+
+const app = apps.createApp();
+
+app.listen(PORT, () => {
+  logger.info(`Crystelf-core listening on ${PORT}`);
+});

src/modules/image/image.controller.ts

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+import express from 'express';
+import ImageService from './image.service';
+import logger from '../../utils/logger';
+
+class ImageController {
+  private readonly router: express.Router;
+  private readonly imageService: ImageService;
+
+  constructor() {
+    this.router = express.Router();
+    this.imageService = new ImageService();
+    this.initializeRoutes();
+  }
+
+  public getRouter(): express.Router {
+    return this.router;
+  }
+
+  private initializeRoutes(): void {
+    this.router.get('/:filename', this.handleGetImage);
+  }
+
+  private handleGetImage = (req: express.Request, res: express.Response): void => {
+    try {
+      const filename = req.params.filename;
+      logger.debug(`有个小可爱正在请求${filename}噢..`);
+
+      const filePath = this.imageService.getImage(filename);
+      if (!filePath) {
+        this.sendError(res, 404, '文件不存在啦！');
+        return;
+      }
+
+      res.sendFile(filePath);
+      logger.info(`成功投递文件: ${filePath}`);
+    } catch (error) {
+      this.sendError(res, 500, '晶灵服务处理图像请求时出错..');
+      logger.error('晶灵图像请求处理失败:', error);
+    }
+  };
+
+  private sendError(res: express.Response, statusCode: number, message: string): void {
+    res.status(statusCode).json({
+      success: false,
+      error: message,
+      timestamp: new Date().toISOString(),
+    });
+  }
+}
+
+export default new ImageController();

src/modules/image/image.service.ts

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+import path from 'path';
+import fs from 'fs';
+import paths from '../../utils/path';
+import logger from '../../utils/logger';
+
+class ImageService {
+  private readonly imageDir: string;
+
+  constructor() {
+    this.imageDir = paths.get('images');
+    logger.info(`晶灵云图数据中心初始化..数据存储在: ${this.imageDir}`);
+  }
+
+  public getImage(filename: string): string | null {
+    const filePath = path.join(this.imageDir, filename);
+    logger.debug(`尝试访问图像路径: ${filePath}`);
+
+    if (!this.isValidFilename(filename)) {
+      throw new Error('无效的文件名格式..');
+    }
+
+    return fs.existsSync(filePath) ? filePath : null;
+  }
+
+  private isValidFilename(filename: string): boolean {
+    return /^[a-zA-Z0-9_\-\.]+$/.test(filename);
+  }
+}
+
+export default ImageService;

src/modules/sample/sample.controller.ts

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+import express from 'express';
+import sampleService from './sample.service';
+
+class SampleController {
+  private readonly router: express.Router;
+
+  constructor() {
+    this.router = express.Router();
+    this.initializeRoutes();
+  }
+
+  public getRouter(): express.Router {
+    return this.router;
+  }
+
+  private initializeRoutes(): void {
+    this.router.get('/hello', this.getHello);
+    this.router.post('/greet', this.postGreet);
+  }
+
+  private getHello = (req: express.Request, res: express.Response): void => {
+    try {
+      const result = sampleService.getHello();
+      this.sendSuccess(res, result);
+    } catch (error) {
+      this.sendError(res, error);
+    }
+  };
+
+  private postGreet = (req: express.Request, res: express.Response): void => {
+    try {
+      const { name } = req.body;
+      const result = sampleService.generateGreeting(name);
+      this.sendSuccess(res, result);
+    } catch (error) {
+      this.sendError(res, error);
+    }
+  };
+
+  private sendSuccess(res: express.Response, data: any, statusCode = 200): void {
+    res.status(statusCode).json({
+      success: true,
+      data,
+      timestamp: new Date().toISOString(),
+    });
+  }
+
+  private sendError(res: express.Response, error: any, statusCode = 500): void {
+    res.status(statusCode).json({
+      success: false,
+      message: error.message,
+      timestamp: new Date().toISOString(),
+    });
+  }
+}
+
+export default new SampleController();

src/modules/sample/sample.service.ts

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+import logger from '../../utils/logger';
+
+class SampleService {
+  getHello() {
+    logger.debug(`有个小可爱正在请求GetHello方法..`);
+    return { message: 'Hello World!' };
+  }
+
+  generateGreeting(name: string) {
+    logger.debug(`有个小可爱正在请求generateGreeting方法..`);
+    if (!name) {
+      logger.warn('Name is required');
+      throw new Error('Name is required');
+    }
+    return { message: `Hello, ${name}!` };
+  }
+}
+
+export default new SampleService();

src/utils/config.ts

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+import dotenv from 'dotenv';
+
+dotenv.config();
+
+let config = {
+  get: (key: string, defaultValue: any) => {
+    const value = process.env[key];
+    if (value === undefined) {
+      if (defaultValue !== undefined) return defaultValue;
+      throw new Error(`环境变量${key}未定义..`);
+    }
+
+    if (typeof defaultValue === 'number') return Number(value);
+    if (typeof defaultValue === 'boolean') return value === 'true';
+    return value;
+  },
+
+  set: (key: string, value: any) => {
+    process.env[key] = value;
+  },
+};
+
+export default config;

src/utils/date.ts

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+let date = {
+  getCurrentDate: () => {
+    const now = new Date();
+    return `${now.getFullYear()}${(now.getMonth() + 1).toString().padStart(2, '0')}${now.getDate().toString().padStart(2, '0')}`;
+  },
+  getCurrentTime: () => {
+    return new Date().toLocaleTimeString('en-US', { hour12: false });
+  },
+};
+
+export default date;

src/utils/file.ts

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+import path from 'path';
+import paths from './path';
+import date from './date';
+import fs from 'fs';
+import chalk from 'chalk';
+import logger from './logger';
+
+let fc = {
+  createDir: (targetPath: string = '', includeFile: boolean = false) => {
+    const root = paths.get('root');
+    if (path.isAbsolute(targetPath)) {
+      if (includeFile) {
+        const parentDir = path.dirname(targetPath);
+        if (!fs.existsSync(parentDir)) {
+          fs.mkdirSync(parentDir, { recursive: true });
+          logger.debug(`成功创建绝对目录: ${parentDir}`);
+        }
+        return;
+      }
+      if (!fs.existsSync(targetPath)) {
+        fs.mkdirSync(targetPath, { recursive: true });
+        logger.debug(`成功创建绝对目录: ${targetPath}`);
+      }
+      return;
+    }
+
+    const fullPath = includeFile
+      ? path.join(root, path.dirname(targetPath))
+      : path.join(root, targetPath);
+    if (!fs.existsSync(fullPath)) {
+      fs.mkdirSync(fullPath, { recursive: true });
+      logger.debug(`成功创建相对目录: ${fullPath}`);
+    }
+  },
+
+  logToFile: (level: string, message: string) => {
+    const logFile = path.join(paths.get('log'), `${date.getCurrentDate()}.log`);
+    const logMessage = `[${date.getCurrentTime()}] [${level}] ${message}\n`;
+
+    fs.appendFile(logFile, logMessage, (err) => {
+      if (err) console.error(chalk.red('[LOGGER] 写入日志失败:'), err);
+    });
+  },
+};
+
+export default fc;

src/utils/logger.ts

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+import chalk from 'chalk';
+import config from './config';
+import fc from './file';
+
+const logger = {
+  debug: (...args: any[]) => {
+    if (config.get('DEBUG', false)) {
+      //const message = args.join(' ');
+      console.log(chalk.cyan('[DEBUG]'), ...args);
+      //fc.logToFile('DEBUG', message);
+    }
+  },
+  info: (...args: any[]) => {
+    const message = args.join(' ');
+    console.log(chalk.green('[INFO]'), ...args);
+    fc.logToFile('INFO', message);
+  },
+  warn: (...args: any[]) => {
+    const message = args.join(' ');
+    console.log(chalk.yellow('[WARN]'), ...args);
+    fc.logToFile('WARN', message);
+  },
+  error: (...args: any[]) => {
+    const message = args.join(' ');
+    console.log(chalk.red('[ERROR]'), ...args);
+    fc.logToFile('ERROR', message);
+  },
+};
+
+export default logger;

src/utils/path.ts

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+import path from 'path';
+
+const paths = {
+  get: (value?: string) => {
+    switch (value) {
+      case 'root':
+        return path.join(__dirname, '..');
+      case 'public':
+        return path.join(__dirname, '../public');
+      case 'images':
+        return path.join(__dirname, '../../public/images/');
+      case 'log':
+        return path.join(__dirname, '../../logs');
+      default:
+        return path.join(__dirname, '..');
+    }
+  },
+
+  resolve: (segments: string) => {
+    return path.join(__dirname, segments);
+  },
+};
+
+export default paths;

tsconfig.json

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+{
+  "compilerOptions": {
+    "target": "es2016",
+    "module": "commonjs",
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "outDir": "dist"
+  },
+  "include": ["src"]
+}