init

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = false

.eslintrc.js

@@ -0,0 +1,25 @@
+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    tsconfigRootDir: __dirname,
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended',
+  ],
+  root: true,
+  env: {
+    node: true,
+    jest: true,
+  },
+  ignorePatterns: ['.eslintrc.js'],
+  rules: {
+    '@typescript-eslint/interface-name-prefix': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+  },
+};

.gitignore

@@ -0,0 +1,56 @@
+# compiled output
+/dist
+/node_modules
+/build
+
+# Logs
+logs
+*.log
+npm-debug.log*
+pnpm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+
+# Tests
+/coverage
+/.nyc_output
+
+# IDEs and editors
+/.idea
+.project
+.classpath
+.c9/
+*.launch
+.settings/
+*.sublime-workspace
+
+# IDE - VSCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# temp directory
+.temp
+.tmp
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

nest-cli.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "deleteOutDir": true
+  }
+}

package.json

@@ -0,0 +1,73 @@
+{
+  "name": "danmu_server",
+  "version": "0.0.1",
+  "description": "",
+  "author": "",
+  "private": true,
+  "license": "UNLICENSED",
+  "scripts": {
+    "build": "nest build",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "start": "nest start",
+    "start:dev": "nest start --watch",
+    "start:debug": "nest start --debug --watch",
+    "start:prod": "node dist/main",
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:cov": "jest --coverage",
+    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
+    "test:e2e": "jest --config ./test/jest-e2e.json"
+  },
+  "dependencies": {
+    "@nestjs/common": "^10.0.0",
+    "@nestjs/core": "^10.0.0",
+    "@nestjs/platform-express": "^10.0.0",
+    "@nestjs/typeorm": "^10.0.2",
+    "axios": "^1.7.7",
+    "mysql2": "^3.11.3",
+    "reflect-metadata": "^0.2.0",
+    "rxjs": "^7.8.1",
+    "typeorm": "^0.3.20"
+  },
+  "devDependencies": {
+    "@nestjs/cli": "^10.0.0",
+    "@nestjs/schematics": "^10.0.0",
+    "@nestjs/testing": "^10.0.0",
+    "@types/express": "^4.17.17",
+    "@types/jest": "^29.5.2",
+    "@types/node": "^20.3.1",
+    "@types/supertest": "^6.0.0",
+    "@typescript-eslint/eslint-plugin": "^8.0.0",
+    "@typescript-eslint/parser": "^8.0.0",
+    "eslint": "^8.42.0",
+    "eslint-config-prettier": "^9.0.0",
+    "eslint-plugin-prettier": "^5.0.0",
+    "jest": "^29.5.0",
+    "prettier": "^3.0.0",
+    "source-map-support": "^0.5.21",
+    "supertest": "^7.0.0",
+    "ts-jest": "^29.1.0",
+    "ts-loader": "^9.4.3",
+    "ts-node": "^10.9.1",
+    "tsconfig-paths": "^4.2.0",
+    "typescript": "^5.1.3"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": [
+      "**/*.(t|j)s"
+    ],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
+  }
+}

src/app.controller.ts

@@ -0,0 +1,36 @@
+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+    constructor(private readonly appService: AppService) {}
+
+    @Get()
+    getHello(): string {
+        return this.appService.getHello();
+    }
+
+    /*
+     * 弹幕生成控制器
+     * */
+    @Get('create_danmu')
+    getDanmu() {
+        return this.appService.createDanmu();
+    }
+
+    /*
+     * 弹幕删除控制器
+     * */
+    @Get('delete_danmu')
+    delDanmu() {
+        return this.appService.deleteDanmu();
+    }
+
+    /*
+     * 弹幕获取控制器
+     * */
+    @Get('get_danmu')
+    getDanmuList() {
+        return this.appService.getDanmu();
+    }
+}

src/app.module.ts

@@ -0,0 +1,25 @@
+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { DanmuEntity } from './danmu.entity';
+
+@Module({
+    imports: [
+        TypeOrmModule.forRoot({
+            type: 'mysql',
+            // host: '1Panel-mysql-Hjwt',
+            host: '193.134.209.123',
+            port: 3306,
+            username: 'danmu_db',
+            password: 'KydF2JtxPBwExPNG',
+            database: 'danmu_db',
+            autoLoadEntities: true,
+            synchronize: false,
+        }),
+        TypeOrmModule.forFeature([DanmuEntity]),
+    ],
+    controllers: [AppController],
+    providers: [AppService],
+})
+export class AppModule {}

src/app.service.ts

@@ -0,0 +1,97 @@
+import { Injectable } from '@nestjs/common';
+import { DanmuEntity } from './danmu.entity';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import axios from 'axios';
+
+@Injectable()
+export class AppService {
+    constructor(
+        @InjectRepository(DanmuEntity)
+        private readonly danmuRepository: Repository<DanmuEntity>,
+    ) {}
+
+    getHello(): string {
+        return 'Hello NestJS!';
+    }
+
+    /*
+     * 生成弹幕并保存
+     * */
+    async createDanmu() {
+        try {
+            const { data: name_res } = await axios({
+                url: 'https://www.yuanxiapi.cn/api/wangming/?num=1',
+                method: 'get',
+            });
+            const { data: avatar_res } = await axios({
+                url: 'https://api.vvhan.com/api/avatar/rand?type=json',
+                method: 'get',
+            });
+            const random_num = Math.floor(Math.random() * (5000 - 100));
+            const random_num_hundred = Math.floor(random_num / 100) * 100;
+            const danmu = new DanmuEntity();
+            danmu.avatar = avatar_res.url;
+            danmu.nick_name = name_res.name;
+            danmu.draw_num = random_num_hundred;
+            danmu.win_number = random_num_hundred / 100;
+            const res = await this.danmuRepository.save(danmu);
+            return {
+                code: 200,
+                data: res,
+                message: '生成成功',
+            };
+        } catch (err) {
+            return {
+                code: 500,
+                data: err,
+                message: '生成失败',
+            };
+        }
+    }
+
+    /*
+     * 删除全部draw_num为0的弹幕
+     * */
+    async deleteDanmu() {
+        try {
+            const res = await this.danmuRepository.delete({ draw_num: 0 });
+            return {
+                code: 200,
+                data: res,
+                message: '删除成功',
+            };
+        } catch (err) {
+            return {
+                code: 500,
+                data: err,
+                message: '删除失败',
+            };
+        }
+    }
+
+    /*
+     * 获取弹幕
+     * */
+    async getDanmu() {
+        try {
+            const random_num = Math.floor(Math.random() * (200 - 100));
+            const res = await this.danmuRepository
+                .createQueryBuilder('user')
+                .orderBy('RAND()') // 对于 MySQL 或 MariaDB 数据库
+                .limit(random_num)
+                .getMany();
+            return {
+                code: 200,
+                data: res,
+                message: '获取成功',
+            };
+        } catch (err) {
+            return {
+                code: 500,
+                data: err,
+                message: '获取失败',
+            };
+        }
+    }
+}

src/danmu.entity.ts

@@ -0,0 +1,31 @@
+import {
+    Entity,
+    Column,
+    PrimaryGeneratedColumn,
+    CreateDateColumn,
+    UpdateDateColumn,
+} from 'typeorm';
+
+@Entity('danmu')
+export class DanmuEntity {
+    @PrimaryGeneratedColumn()
+    id: number;
+
+    @Column()
+    avatar: string;
+
+    @Column()
+    nick_name: string;
+
+    @Column()
+    draw_num: number;
+
+    @Column()
+    win_number: number;
+
+    @CreateDateColumn()
+    createdAt: Date;
+
+    @UpdateDateColumn()
+    updatedAt: Date;
+}

src/main.ts

@@ -0,0 +1,10 @@
+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+
+async function bootstrap() {
+    const app = await NestFactory.create(AppModule);
+    app.enableCors();
+    await app.listen(3000);
+}
+
+bootstrap();

test/app.e2e-spec.ts

@@ -0,0 +1,24 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { INestApplication } from '@nestjs/common';
+import * as request from 'supertest';
+import { AppModule } from './../src/app.module';
+
+describe('AppController (e2e)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it('/ (GET)', () => {
+    return request(app.getHttpServer())
+      .get('/')
+      .expect(200)
+      .expect('Hello World!');
+  });
+});

test/jest-e2e.json

@@ -0,0 +1,9 @@
+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}

tsconfig.build.json

@@ -0,0 +1,4 @@
+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
+}

tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "allowSyntheticDefaultImports": true,
+    "target": "ES2021",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true,
+    "skipLibCheck": true,
+    "strictNullChecks": false,
+    "noImplicitAny": false,
+    "strictBindCallApply": false,
+    "forceConsistentCasingInFileNames": false,
+    "noFallthroughCasesInSwitch": false
+  }
+}