Merge pull request #62 from techknowledge-blog/feature/add-estimated-time-column

Estimated Time

Author: leticiadia

prisma/migrations/20250825191729_add_estimated_time_column/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Post" ADD COLUMN     "estimated_time" INTEGER NOT NULL DEFAULT 0;

prisma/migrations/20250826002145_add_views_to_post/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Post" ADD COLUMN     "views" INTEGER NOT NULL DEFAULT 0;

prisma/migrations/20250826015513_remove_views_column/migration.sql

@@ -0,0 +1,8 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `views` on the `Post` table. All the data in the column will be lost.
+
+*/
+-- AlterTable
+ALTER TABLE "Post" DROP COLUMN "views";

prisma/schema.prisma

@@ -43,6 +43,7 @@ model Post {
   coverImageLink   String?
   slug             String    @unique
   previewImageLink String?
+  estimated_time   Int       @default(0)
   authorId         Int
   categoryId       Int
   createdAt        DateTime  @default(now())

src/modules/posts/posts.controller.ts

@@ -1,38 +1,43 @@
-import { Controller, Get, Param } from '@nestjs/common';
+import {
+  Body,
+  Controller,
+  Delete,
+  Get,
+  Param,
+  Patch,
+  Post,
+} from '@nestjs/common';
 import { PostsService } from './posts.service';
 import { Post as PostModel } from '@prisma/client';
+import { CreatePostDto } from './dto/create-post.dto';
+import { UpdatePostDto } from './dto/update-post.dto';
 
 @Controller('posts')
 export class PostsController {
   constructor(private readonly postService: PostsService) {}
 
-  @Get('published')
-  async findPublishedPosts(): Promise<PostModel[]> {
-    return this.postService.posts({
-      where: { isPublished: true },
-    });
+  @Post()
+  async create(@Body() dto: CreatePostDto) {
+    return this.postService.createPost(dto);
   }
 
-  @Get('filtered-posts/:searchString')
-  async findFilteredPosts(
-    @Param('searchString') searchString: string,
-  ): Promise<PostModel[]> {
-    return this.postService.posts({
-      where: {
-        OR: [
-          {
-            title: { contains: searchString },
-          },
-          {
-            content: { contains: searchString },
-          },
-        ],
-      },
-    });
+  @Get('published')
+  async findPublishedPosts(): Promise<PostModel[]> {
+    return this.postService.findPublishedPosts();
   }
 
   @Get(':slug')
   async findPostBySlug(@Param('slug') slug: string): Promise<PostModel> {
     return this.postService.findPostBySlug(slug);
   }
+
+  @Patch(':slug')
+  update(@Param('slug') slug: string, @Body() dto: UpdatePostDto) {
+    return this.postService.updatePost(slug, dto);
+  }
+
+  @Delete(':slug')
+  remove(@Param('slug') slug: string) {
+    return this.postService.removePost(slug);
+  }
 }

src/modules/posts/posts.service.ts

@@ -1,11 +1,43 @@
 import { Injectable, NotFoundException } from '@nestjs/common';
 import { PrismaService } from '../../prisma.service';
-import { Post, Prisma } from '@prisma/client';
+import { Post } from '@prisma/client';
+import { CreatePostDto } from './dto/create-post.dto';
+import { UpdatePostDto } from './dto/update-post.dto';
 
 @Injectable()
 export class PostsService {
   constructor(private prisma: PrismaService) {}
 
+  private calculateEstimatedTime(content: string): number {
+    if (!content) {
+      new NotFoundException('Conteúdo não encontrado!');
+      return 0;
+    }
+
+    const countWords = content.trim().split(/\s+/).length;
+
+    return Math.ceil(countWords / 200);
+  }
+
+  async createPost(data: CreatePostDto): Promise<Post> {
+    const estimated_time = this.calculateEstimatedTime(data.content as string);
+
+    return this.prisma.post.create({
+      data: {
+        title: data.title,
+        previewContent: data.previewContent,
+        content: data.content,
+        slug: data.slug,
+        isPublished: data.isPublished,
+        coverImageLink: data.coverImageLink,
+        previewImageLink: data.previewImageLink,
+        estimated_time,
+        author: { connect: { id: data.authorId } },
+        category: { connect: { id: data.categoryId } },
+      },
+    });
+  }
+
   async findPostBySlug(slug: string): Promise<Post | null> {
     const post = await this.prisma.post.findUnique({
       where: { slug },
@@ -24,26 +56,17 @@ export class PostsService {
     });
 
     if (!post) {
-      throw new NotFoundException('Post not found!');
+      throw new NotFoundException('Artigo não encontrado!');
     }
 
     return post;
   }
 
-  async posts(params: {
-    skip?: number;
-    take?: number;
-    cursor?: Prisma.PostWhereUniqueInput;
-    where?: Prisma.PostWhereInput;
-    orderBy?: Prisma.PostOrderByWithRelationInput;
-  }): Promise<Post[]> {
-    const { skip, take, cursor, where, orderBy } = params;
-    return this.prisma.post.findMany({
-      skip,
-      take,
-      cursor,
-      where,
-      orderBy,
+  async findPublishedPosts(): Promise<Post[]> {
+    const posts = await this.prisma.post.findMany({
+      where: {
+        isPublished: true,
+      },
       include: {
         category: {
           select: {
@@ -57,28 +80,37 @@ export class PostsService {
         },
       },
     });
-  }
 
-  async createPost(data: Prisma.PostCreateInput): Promise<Post> {
-    return this.prisma.post.create({
-      data,
-    });
+    if (!posts) {
+      throw new NotFoundException('Artigos não encontrados!');
+    }
+
+    return posts;
   }
 
-  async updatePost(params: {
-    where: Prisma.PostWhereUniqueInput;
-    data: Prisma.PostUpdateInput;
-  }): Promise<Post> {
-    const { data, where } = params;
-    return this.prisma.post.update({
-      data,
-      where,
-    });
+  async updatePost(slug: string, data: UpdatePostDto) {
+    const findPost = await this.findPostBySlug(slug);
+
+    if (!findPost) {
+      throw new NotFoundException(
+        `Não foi encontrado o artigo com o slug "${slug}"`,
+      );
+    }
+
+    return this.prisma.post.update({ where: { slug }, data });
   }
 
-  async deletePost(where: Prisma.PostWhereUniqueInput): Promise<Post> {
-    return this.prisma.post.delete({
-      where,
-    });
+  async removePost(slug: string) {
+    const findPost = await this.findPostBySlug(slug);
+
+    if (!findPost) {
+      throw new NotFoundException(
+        `Não foi encontrado o artigo com o slug "${slug}"`,
+      );
+    }
+
+    await this.prisma.post.delete({ where: { slug } });
+
+    return { message: 'Artigo removido com sucesso!' };
   }
 }