add content service and core config

src/modules/content/content.module.ts

@@ -1,8 +1,12 @@
 import { Module } from '@nestjs/common';
 
+import { PostService } from '@/modules/content/services/post.service';
+
 import { PostController } from './controllers/post.controller';
 
 @Module({
     controllers: [PostController],
+    providers: [PostService],
+    exports: [PostService],
 })
 export class ContentModule {}

src/modules/content/controllers/post.controller.ts

@@ -3,43 +3,30 @@ import {
     Controller,
     Delete,
     Get,
-    NotFoundException,
     Param,
+    ParseIntPipe,
     Patch,
     Post,
     ValidationPipe,
 } from '@nestjs/common';
 
-import { isNil } from '@nestjs/common/utils/shared.utils';
-
 import { CreatePostDto } from '@/modules/content/dtos/create-post.dto';
 import { UpdatePostDto } from '@/modules/content/dtos/update-post.dto';
 
-import { PostEntity } from '../types';
-
-let posts: PostEntity[] = [
-    { title: '第一篇文章标题', body: '第一篇文章内容' },
-    { title: '第二篇文章标题', body: '第二篇文章内容' },
-    { title: '第三篇文章标题', body: '第三篇文章内容' },
-    { title: '第四篇文章标题', body: '第四篇文章内容' },
-    { title: '第五篇文章标题', body: '第五篇文章内容' },
-    { title: '第六篇文章标题', body: '第六篇文章内容' },
-].map((v, id) => ({ ...v, id }));
+import { PostService } from '@/modules/content/services/post.service';
 
 @Controller('posts')
 export class PostController {
+    constructor(private postService: PostService) {}
+
     @Get()
     async index() {
-        return posts;
+        return this.postService.findAll();
     }
 
     @Get(':id')
-    async show(@Param('id') id: number) {
-        const post = posts.find((item) => item.id === Number(id));
-        if (isNil(post)) {
-            throw new NotFoundException(`the post with id ${id} not exits!`);
-        }
-        return post;
+    async show(@Param('id', new ParseIntPipe()) id: number) {
+        return this.postService.findOne(id);
     }
 
     @Post()
@@ -55,12 +42,7 @@ export class PostController {
         )
         data: CreatePostDto,
     ) {
-        const newPost: PostEntity = {
-            id: Math.max(...posts.map(({ id }) => id + 1)),
-            ...data,
-        };
-        posts.push(newPost);
-        return newPost;
+        return this.postService.create(data);
     }
 
     @Patch()
@@ -74,25 +56,13 @@ export class PostController {
                 groups: ['update'],
             }),
         )
-        { id, ...data }: UpdatePostDto,
+        data: UpdatePostDto,
     ) {
-        let toUpdate = posts.find((item) => item.id === Number(id));
-        if (isNil(toUpdate)) {
-            throw new NotFoundException(`the post with id ${id} not exits!`);
-        }
-
-        toUpdate = { ...toUpdate, ...data };
-        posts = posts.map((item) => (item.id === Number(id) ? toUpdate : item));
-        return toUpdate;
+        return this.postService.update(data);
     }
 
     @Delete(':id')
-    async delete(@Param('id') id: number) {
-        const toDelete = posts.find((item) => item.id === Number(id));
-        if (isNil(toDelete)) {
-            throw new NotFoundException(`the post with id ${id} not exits!`);
-        }
-        posts = posts.filter((item) => item.id !== Number(id));
-        return toDelete;
+    async delete(@Param('id', new ParseIntPipe()) id: number) {
+        return this.postService.delete(id);
     }
 }

src/modules/content/services/post.service.ts

@@ -0,0 +1,58 @@
+import { Injectable, NotFoundException } from '@nestjs/common';
+import { isNil } from '@nestjs/common/utils/shared.utils';
+
+import { CreatePostDto } from '@/modules/content/dtos/create-post.dto';
+import { UpdatePostDto } from '@/modules/content/dtos/update-post.dto';
+import { PostEntity } from '@/modules/content/types';
+
+@Injectable()
+export class PostService {
+    protected posts: PostEntity[] = [
+        { title: '第一篇文章标题', body: '第一篇文章内容' },
+        { title: '第二篇文章标题', body: '第二篇文章内容' },
+        { title: '第三篇文章标题', body: '第三篇文章内容' },
+        { title: '第四篇文章标题', body: '第四篇文章内容' },
+        { title: '第五篇文章标题', body: '第五篇文章内容' },
+        { title: '第六篇文章标题', body: '第六篇文章内容' },
+    ].map((v, id) => ({ ...v, id }));
+
+    async findAll() {
+        return this.posts;
+    }
+
+    async findOne(id: number) {
+        const post = this.posts.find((item) => item.id === id);
+        if (isNil(post)) {
+            throw new NotFoundException(`the post with id ${id} not exits!`);
+        }
+        return post;
+    }
+
+    async create(data: CreatePostDto) {
+        const newPost: PostEntity = {
+            id: Math.max(...this.posts.map(({ id }) => id + 1)),
+            ...data,
+        };
+        this.posts.push(newPost);
+        return newPost;
+    }
+
+    async update(data: UpdatePostDto) {
+        let toUpdate = this.posts.find((item) => item.id === data.id);
+        if (isNil(toUpdate)) {
+            throw new NotFoundException(`the post with id ${data.id} not exits!`);
+        }
+        toUpdate = { ...toUpdate, ...data };
+        this.posts = this.posts.filter((item) => (item.id === data.id ? toUpdate : item));
+        return toUpdate;
+    }
+
+    async delete(id: number) {
+        const toDelete = this.posts.find((item) => item.id === id);
+        if (isNil(toDelete)) {
+            throw new NotFoundException(`the post with id ${id} not exits!`);
+        }
+        this.posts = this.posts.filter((item) => item.id !== id);
+        return toDelete;
+    }
+}

src/modules/core/services/config.service.ts

@@ -0,0 +1,31 @@
+import { Global, Injectable, Module } from '@nestjs/common';
+import { get } from 'lodash';
+
+import { AppController } from '@/app.controller';
+import { AppService } from '@/app.service';
+import { ContentModule } from '@/modules/content/content.module';
+
+const config: Record<string, any> = {
+    name: 'ray',
+};
+
+@Injectable()
+export class ConfigService {
+    get<T>(key: string, defaultValue?: T): T | undefined {
+        return get(config, key, defaultValue);
+    }
+}
+
+@Global()
+@Module({
+    providers: [ConfigService],
+    exports: [ConfigService],
+})
+export class CoreModule {}
+
+@Module({
+    imports: [ContentModule, CoreModule],
+    providers: [AppService],
+    controllers: [AppController],
+})
+export class AppModule {}