feat: 优化项目目录结构

2025-12-12 17:25:26 +08:00
parent ae627d0496
commit b89f83291e
235 changed files with 0 additions and 0 deletions
--- a/apps/backend/src/blog/blog.service.ts
+++ b/apps/backend/src/blog/blog.service.ts
@@ -0,0 +1,143 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Blog } from './entity/Blog.entity';
+import { Repository } from 'typeorm';
+import { BlogComment } from './entity/BlogComment.entity';
+import { BlogPermission } from './blog.permission.enum';
+import { createHash } from 'crypto';
+
+@Injectable()
+export class BlogService {
+  constructor(
+    @InjectRepository(Blog)
+    private readonly blogRepository: Repository<Blog>,
+    @InjectRepository(BlogComment)
+    private readonly blogCommentRepository: Repository<BlogComment>,
+  ) {}
+
+  async list(
+    option: {
+      withAll?: boolean;
+    } = {},
+  ) {
+    return (
+      await this.blogRepository.find({
+        order: {
+          createdAt: 'DESC',
+        },
+      })
+    )
+      .filter(
+        (i) => option.withAll || i.permissions.includes(BlogPermission.List),
+      )
+      .map((i) => {
+        if (option.withAll) {
+          return i;
+        }
+
+        const { createdAt, deletedAt, id, title, viewCount } = i;
+        return {
+          createdAt,
+          deletedAt,
+          id,
+          title,
+          viewCount,
+        };
+      });
+  }
+
+  async create(dto: Partial<Blog> & { password: string }) {
+    const { password, ...blog } = dto;
+    if (blog.permissions.includes(BlogPermission.ByPassword)) {
+      if (password) {
+        blog.password_hash = createHash('sha256')
+          .update(`${password}`)
+          .digest('hex');
+      }
+    }
+
+    const newBlog = this.blogRepository.create(blog);
+    return this.blogRepository.save(newBlog);
+  }
+
+  async setPassword(id: string, password: string) {
+    const blog = await this.findById(id);
+    if (!blog) {
+      throw new Error('博客不存在');
+    }
+
+    return (
+      (
+        await this.blogRepository.update(id, {
+          ...blog,
+          password_hash: this.hashPassword(password),
+        })
+      ).affected > 0
+    );
+  }
+
+  async update(id: string, blog: Partial<Blog>) {
+    await this.blogRepository.update(id, blog);
+    return this.blogRepository.findOneBy({ id });
+  }
+
+  async remove(id: string) {
+    const blog = await this.blogRepository.findOneBy({ id });
+    if (!blog) return null;
+    return this.blogRepository.softRemove(blog);
+  }
+
+  async findById(id: string) {
+    return await this.blogRepository.findOneBy({ id });
+  }
+
+  async incrementViewCount(id: string) {
+    await this.blogRepository.increment({ id }, 'viewCount', 1);
+  }
+
+  async getComments(blog: Blog) {
+    const comments = await this.blogCommentRepository.find({
+      where: { blog: { id: blog.id } },
+      relations: ['user'],
+      order: {
+        createdAt: 'DESC',
+      },
+    });
+
+    return comments.map((comment) => {
+      const { user, ...rest } = comment;
+      delete rest.blog;
+      return {
+        ...rest,
+        user: user
+          ? {
+              userId: user.userId,
+              username: user.username,
+              nickname: user.nickname,
+            }
+          : null,
+      };
+    });
+  }
+
+  async createComment(comment: Partial<BlogComment>) {
+    const newComment = this.blogCommentRepository.create(comment);
+    const savedComment = await this.blogCommentRepository.save(newComment, {});
+    const { user, ...commentWithoutBlog } = savedComment;
+    delete commentWithoutBlog.blog;
+    return {
+      ...commentWithoutBlog,
+      user: user
+        ? {
+            userId: user.userId,
+            username: user.username,
+            nickname: user.nickname,
+          }
+        : null,
+    };
+  }
+
+  hashPassword(password: string) {
+    return createHash('sha256').update(`${password}`).digest('hex');
+  }
+}