Start building the post file service

src/models/PostMeta.ts

@@ -1,6 +1,6 @@
 export type PostMeta = {
   title: string,
-  slug?: string,
+  slug: string,
   description?: string,
   html?: string,
   date: Date,

src/services/post-file.ts

@@ -4,33 +4,9 @@ import type { Post } from '@blog/models/Post';
 import * as yamlFront from 'yaml-front-matter';
 import { marked } from 'marked';
 
-export class PostFileService {
+export async function readPostFile(fileName: string): Promise<Post> {
-  private postFiles: string[];
-  private posts: Record<string, Post>;
-
-  public constructor(postFiles: string[]) {
-    this.postFiles = postFiles;
-    this.posts = new Record<string, Post>();
-  }
-
-  public static async create() {
-    const posts = new Record<string, Post>();
-    const postFiles: string[] = await readdir(POST_PATH);
-    for (const postFile in postFiles) {
-      const post = await this.readPostFile(postFile);
-      posts.add(postFile, post);
-    }
-
-    return new PostFileService(postFiles);
-  }
-
-  protected async openFileAsText(fileName: string): Promise<string> {
   const file = Bun.file(POST_PATH + '/' + fileName);
-    return file.text();
+  const fileContent = await file.text();
-  }
-
-  protected async readPostFile(fileName: string): Promise<Post> {
-    const fileContent = await this.openFileAsText(fileName);
   const parsedData = yamlFront.loadFront(fileContent);  
   const postHtml = await marked.parse(parsedData.__content);
 
@@ -47,4 +23,44 @@ export class PostFileService {
     html: postHtml
   };
 }
+
+export class PostFileService {
+  private posts: Map<string, Post>; 
+
+  public constructor(posts: Map<string, Post>) {
+    this.posts = posts;
+  }
+
+  public static async create() {
+    const posts = new Map<string, Post>();
+    const postFiles: string[] = await readdir(POST_PATH);
+
+    for (const postFile in postFiles) {
+      const post = await readPostFile(postFile);
+      const key = post.meta?.slug || postFile.slice(0, -3);
+      posts.set(key, post);
+    }
+
+    return new PostFileService(posts);
+  }
+
+  public getPostHtml(slug: string): string {
+    const html = this.posts.get(slug)?.html;
+
+    if (!html?.length) {
+      throw new Error("Post does not exist.");
+    }
+
+    return html;
+  }
+
+  public getPostRawContent(slug: string): string {
+    const content = this.posts.get(slug)?.content;
+
+    if (!content?.length) {
+      throw new Error("Post does not exist.");
+    }
+
+    return content;
+  }
 }