feat:添加模块

@@ -2197,6 +2197,19 @@
         "uuid": "8.3.2"
       }
     },
+    "@nestjs/config": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/@nestjs/config/-/config-0.6.3.tgz",
+      "integrity": "sha512-JxvvUpmH0/WOrTB+zh8dEkxSUQXhB7V3d/qeQXyCnMiEFjaq89+fNFztpWjz4DlOfdS4/eYTzIEy9PH2uGnfzA==",
+      "requires": {
+        "dotenv": "8.2.0",
+        "dotenv-expand": "5.1.0",
+        "lodash.get": "4.4.2",
+        "lodash.has": "4.5.2",
+        "lodash.set": "4.3.2",
+        "uuid": "8.3.2"
+      }
+    },
     "@nestjs/core": {
       "version": "7.6.12",
       "resolved": "https://registry.npmjs.org/@nestjs/core/-/core-7.6.12.tgz",
@@ -5354,6 +5367,16 @@
         }
       }
     },
+    "dotenv": {
+      "version": "8.2.0",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-8.2.0.tgz",
+      "integrity": "sha512-8sJ78ElpbDJBHNeBzUbUVLsqKdccaa/BXF1uPTw3GrvQTBgrQrtObr2mUrE38vzYd8cEv+m/JBfDLioYcfXoaw=="
+    },
+    "dotenv-expand": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/dotenv-expand/-/dotenv-expand-5.1.0.tgz",
+      "integrity": "sha512-YXQl1DSa4/PQyRfgrv6aoNjhasp/p4qs9FjJ4q4cQk+8m4r6k4ZSiEyytKG8f8W9gi8WsQtIObNmKd+tMzNTmA=="
+    },
     "ecc-jsbn": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
@@ -8041,6 +8064,21 @@
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.20.tgz",
       "integrity": "sha512-PlhdFcillOINfeV7Ni6oF1TAEayyZBoZ8bcshTHqOYJYlrqzRK5hagpagky5o4HfCzzd1TRkXPMFq6cKk9rGmA=="
     },
+    "lodash.get": {
+      "version": "4.4.2",
+      "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
+      "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk="
+    },
+    "lodash.has": {
+      "version": "4.5.2",
+      "resolved": "https://registry.npmjs.org/lodash.has/-/lodash.has-4.5.2.tgz",
+      "integrity": "sha1-0Z9NwQlQWMzL4rDN9O4P5Ko3yGI="
+    },
+    "lodash.set": {
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/lodash.set/-/lodash.set-4.3.2.tgz",
+      "integrity": "sha1-2HV7HagH3eJIFrDWqEvqGnYjCyM="
+    },
     "lodash.sortby": {
       "version": "4.7.0",
       "resolved": "https://registry.npmjs.org/lodash.sortby/-/lodash.sortby-4.7.0.tgz",
@@ -8480,6 +8518,19 @@
       "integrity": "sha512-Yd3UES5mWCSqR+qNT93S3UoYUkqAZ9lLg8a7g9rimsWmYGK8cVToA4/sF3RrshdyV3sAGMXVUmpMYOw+dLpOuw==",
       "dev": true
     },
+    "nestjs-config": {
+      "version": "1.4.7",
+      "resolved": "https://registry.npmjs.org/nestjs-config/-/nestjs-config-1.4.7.tgz",
+      "integrity": "sha512-lD/tW5UZ3J+awJSUOjjCjJ6QwXVoJBYuigDJONQj4FETxImPLeB30Brxgt6ZyGX8o3BvA5osDdNfYO2iKQUXRQ==",
+      "requires": {
+        "dotenv": "^8.0.0",
+        "glob": "^7.1.2",
+        "lodash.get": "^4.4.2",
+        "lodash.set": "^4.3.2",
+        "reflect-metadata": "^0.1.12",
+        "rxjs": "^6.0.0"
+      }
+    },
     "nice-try": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",

@@ -22,12 +22,14 @@
   },
   "dependencies": {
     "@nestjs/common": "^7.5.1",
+    "@nestjs/config": "^0.6.3",
     "@nestjs/core": "^7.5.1",
     "@nestjs/graphql": "^7.9.9",
     "@nestjs/platform-express": "^7.5.1",
     "apollo-server-express": "^2.21.0",
     "graphql": "^15.5.0",
     "graphql-tools": "^7.0.4",
+    "nestjs-config": "^1.4.7",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
     "rxjs": "^6.6.3"

 import { Module } from '@nestjs/common';
-import { AppController } from './app.controller';
-import { AppService } from './app.service';
+import { GraphQLModule } from '@nestjs/graphql';
+import { ConfigModule, ConfigService } from 'nestjs-config';
+// import { AppController } from './app.controller';
+// import { AppService } from './app.service';
+import * as path from 'path';
 
 @Module({
-  imports: [],
-  controllers: [AppController],
-  providers: [AppService],
+  imports: [
+    ConfigModule.load(path.resolve(__dirname, 'config', '**/!(*.d).{ts,js}')),
+    GraphQLModule.forRootAsync({
+      imports: [ConfigModule],
+      useFactory: (config: ConfigService) => config.get('graphql'),
+      inject: [ConfigService],
+    }),
+  ],
+  // controllers: [AppController],
+  // providers: [AppService],
 })
-export class AppModule {}
+// export class AppModule {}
+export class ApplicationModule {}

+import * as path from 'path';
+
+export default {
+  autoSchemaFile: path.join(process.cwd(), 'src/schema.gql'), // 最后生成`Schema 文件，不可修改`
+  installSubscriptionHandlers: true, // 启动订阅
+};

+import { ValidationPipe } from '@nestjs/common';
 import { NestFactory } from '@nestjs/core';
-import { AppModule } from './app.module';
+import { ApplicationModule } from './app.module';
 
 async function bootstrap() {
-  const app = await NestFactory.create(AppModule);
+  const app = await NestFactory.create(ApplicationModule);
+  app.useGlobalPipes(new ValidationPipe());
+
   await app.listen(3000);
+  console.log(`Application is running on: ${await app.getUrl()}`);
 }
 bootstrap();

+import { Module } from '@nestjs/common';
+import { AuthorService } from './author.service';
+import { AuthorResolver } from './author.resolver';
+@Module({
+  providers: [AuthorService, AuthorResolver],
+})
+export class AuthorModule {}

+import {
+  Args,
+  Mutation,
+  Query,
+  Resolver,
+  Subscription,
+  ResolveField,
+  Parent,
+  Int,
+} from '@nestjs/graphql';
+import { PubSub } from 'graphql-subscriptions';
+import { Author } from './models/aothor.model';
+import { Post } from './models/post.model';
+import { AuthorService } from './author.service';
+
+const pubSub = new PubSub();
+
+@Resolver(() => Author)
+export class AuthorResolver {
+  constructor(private authorsService: AuthorService) {}
+  // 根据id查询作者信息
+  @Query((returns) => Author, {
+    name: 'author',
+    description: 'get author info by id',
+    nullable: false,
+  })
+  async getAuthor(
+    @Args('id', {
+      type: () => Int,
+      description: 'author id',
+      nullable: false,
+    })
+    id: number,
+  ): Promise<any> {
+    return {
+      id,
+      firstName: 'wu',
+      lastName: 'pat',
+    };
+  }
+  // 修改作者信息
+  @Mutation((returns) => Author, {
+    name: 'changeAuthor',
+    description: 'change author info by id',
+    nullable: false,
+  })
+  async changeAuthor(
+    @Args('id') id: number,
+    @Args('firstName') firstName: string,
+    @Args('lastName') lastName: string,
+  ): Promise<any> {
+    return {
+      id,
+      firstName,
+      lastName,
+    };
+  }
+  // 解析posts字段
+  @ResolveField()
+  async posts(@Parent() author: Author): Promise<any> {
+    const { id } = author;
+    return [
+      {
+        id: 4,
+        title: 'hello',
+        votes: 2112,
+      },
+    ];
+  }
+  // 新增文章
+  @Mutation((returns) => Post)
+  async addPost() {
+    const newPost = {
+      id: 1,
+      title: '新增文章',
+    };
+    // 新增成功后，通知更新
+    await pubSub.publish('postAdded', { postAdded: newPost });
+    return newPost;
+  }
+
+  // 监听变更
+  @Subscription((returns) => Post, {
+    name: 'postAdded',
+  })
+  async postAdded(/*@Args('title') title: string*/) {
+    return pubSub.asyncIterator('postAdded');
+  }
+}

+import { Injectable } from '@nestjs/common';
+@Injectable()
+export class AuthorService {
+  async findOneById() {}
+}
\ No newline at end of file

+export class GetAuthorArgs {}

+import { Field, Int, ObjectType } from '@nestjs/graphql';
+import { Post } from './post.model';
+
+@ObjectType({ description: 'Author model' })
+export class Author {
+  @Field((type) => Int, {
+    description: '作者id',
+  })
+  id: number;
+
+  @Field({
+    nullable: true,
+    description: '作者姓氏',
+  })
+  firstName?: string;
+
+  @Field({
+    nullable: true,
+    description: '作者名字',
+  })
+  lastName?: string;
+
+  @Field((type) => [Post], {
+    nullable: 'items',
+    description: '作者发表的文章',
+  })
+  posts: Post[];
+}

+import { Field, Int, ObjectType } from '@nestjs/graphql';
+
+@ObjectType()
+export class Post {
+  @Field((type) => Int)
+  id: number;
+
+  @Field() title: string;
+
+  @Field((type) => Int, {
+    nullable: true,
+  })
+  votes?: number;
+}