no more typescript parser. only rust!

SSE Changed a bit to fit the Rust Parser

src/app/api/posts/[slug]/route.ts

@@ -1,172 +1,34 @@
-export const dynamic = "force-dynamic";
-
 import { NextResponse } from 'next/server';
-import fs from 'fs';
 import path from 'path';
-import matter from 'gray-matter';
-import { marked } from 'marked';
-import DOMPurify from 'dompurify';
-import { JSDOM } from 'jsdom';
-import hljs from 'highlight.js';
 import { getPostsDirectory } from '@/lib/postsDirectory';
 import { spawnSync } from 'child_process';
 
 const postsDirectory = getPostsDirectory();
 
-// Function to get file creation date
-function getFileCreationDate(filePath: string): Date {
-  const stats = fs.statSync(filePath);
-  return stats.birthtime ?? stats.mtime;
-}
-
-// Function to generate ID from text (matches frontend logic)
-function generateId(text: string): string {
-  return text
-    .toLowerCase()
-    .replace(/[^a-z0-9]+/g, '-')
-    .replace(/^-+|-+$/g, '');
-}
-
-const renderer = new marked.Renderer();
-
-// Custom heading renderer to add IDs
-renderer.heading = (text, level) => {
-  const id = generateId(text);
-  return `<h${level} id="${id}">${text}</h${level}>`;
-};
-
-renderer.code = (code, infostring, escaped) => {
-  const lang = (infostring || '').match(/\S*/)?.[0];
-  const highlighted = lang && hljs.getLanguage(lang)
-    ? hljs.highlight(code, { language: lang }).value
-    : hljs.highlightAuto(code).value;
-  const langClass = lang ? `language-${lang}` : '';
-  return `<pre><code class="hljs ${langClass}">${highlighted}</code></pre>`;
-};
-
-marked.setOptions({
-  gfm: true,
-  breaks: true,
-  renderer,
-});
-
-async function getPostBySlug(slug: string) {
-  const realSlug = slug.replace(/\.md$/, '');
-  const fullPath = path.join(postsDirectory, `${realSlug}.md`);
-  let rustResult;
-  try {
-    // Try Rust backend first
-    rustResult = spawnSync(
-      path.resolve(process.cwd(), 'markdown_backend/target/release/markdown_backend'),
-      ['show', realSlug],
-      { encoding: 'utf-8' }
-    );
-    if (rustResult.status === 0 && rustResult.stdout) {
-      // Expect Rust to output a JSON object matching the post shape
-      const post = JSON.parse(rustResult.stdout);
-      // Map snake_case to camelCase for frontend compatibility
-      post.createdAt = post.created_at;
-      delete post.created_at;
-      return post;
-    } else {
-      console.error('[Rust parser error]', rustResult.stderr || rustResult.error);
-    }
-  } catch (e) {
-    console.error('[Rust parser exception]', e);
-  }
-
-  // Fallback to TypeScript parser
-  const fileContents = fs.readFileSync(fullPath, 'utf8');
-  const { data, content } = matter(fileContents);
-  const createdAt = getFileCreationDate(fullPath);
-
-  let processedContent = '';
-  try {
-    // Convert markdown to HTML
-    const rawHtml = marked.parse(content);
-    const window = new JSDOM('').window;
-    const purify = DOMPurify(window);
-    processedContent = purify.sanitize(rawHtml as string, {
-      ALLOWED_TAGS: [
-        'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
-        'p', 'a', 'ul', 'ol', 'li', 'blockquote',
-        'pre', 'code', 'em', 'strong', 'del',
-        'hr', 'br', 'img', 'table', 'thead', 'tbody',
-        'tr', 'th', 'td', 'div', 'span', 'iframe'
-      ],
-      ALLOWED_ATTR: [
-        'class', 'id', 'style',
-        'href', 'target', 'rel',
-        'src', 'alt', 'title', 'width', 'height',
-        'frameborder', 'allowfullscreen'
-      ],
-      ALLOWED_URI_REGEXP: /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|cid|xmpp):|[^a-z]|[a-z+.-]+(?:[^a-z+.-:]|$))/i
-    });
-  } catch (err) {
-    console.error(`Error processing markdown for slug "${realSlug}":`, err);
-    processedContent = `<div class="error-message">
-      <p>Error processing markdown content. Please check the console for details.</p>
-      <pre>${err instanceof Error ? err.message : 'Unknown error'}</pre>
-    </div>`;
-  }
-
-  return {
-    slug: realSlug,
-    title: data.title,
-    date: data.date,
-    tags: data.tags || [],
-    summary: data.summary,
-    content: processedContent,
-    createdAt: createdAt.toISOString(),
-    author: (process.env.NEXT_PUBLIC_BLOG_OWNER || 'Anonymous') + "'s",
-  };
-}
-
 export async function GET(
   request: Request,
   { params }: { params: { slug: string[] | string } }
 ) {
-  let parser = 'typescript';
-  let rustError = '';
   try {
     const slugArr = Array.isArray(params.slug) ? params.slug : [params.slug];
     const slugPath = slugArr.join('/');
-    let post;
-    try {
-      const rustResult = spawnSync(
-        path.resolve(process.cwd(), 'markdown_backend/target/release/markdown_backend'),
-        ['show', slugPath],
-        { encoding: 'utf-8' }
-      );
-      if (rustResult.status === 0 && rustResult.stdout) {
-        post = JSON.parse(rustResult.stdout);
-        post.createdAt = post.created_at;
-        delete post.created_at;
-        parser = 'rust';
-      } else {
-        rustError = rustResult.stderr || rustResult.error?.toString() || 'Unknown error';
-        console.error('[Rust parser error]', rustError);
-      }
-    } catch (e) {
-      rustError = e instanceof Error ? e.message : String(e);
-      console.error('[Rust parser exception]', rustError);
+    const rustResult = spawnSync(
+      path.resolve(process.cwd(), 'markdown_backend/target/release/markdown_backend'),
+      ['show', slugPath],
+      { encoding: 'utf-8' }
+    );
+    if (rustResult.status === 0 && rustResult.stdout) {
+      const post = JSON.parse(rustResult.stdout);
+      post.createdAt = post.created_at;
+      delete post.created_at;
+      return NextResponse.json(post);
+    } else {
+      const rustError = rustResult.stderr || rustResult.error?.toString() || 'Unknown error';
+      return NextResponse.json({ error: 'Rust parser error', details: rustError }, { status: 500 });
     }
-    if (!post) {
-      post = await getPostBySlug(slugPath);
-    }
-    const response = NextResponse.json(post);
-    response.headers.set('X-Parser', parser);
-    if (parser !== 'rust' && rustError) {
-      response.headers.set('X-Rust-Parser-Error', rustError);
-    }
-    return response;
   } catch (error) {
-    console.error('Error loading post:', error);
     return NextResponse.json(
-      { 
-        error: 'Error loading post',
-        details: error instanceof Error ? error.message : 'Unknown error'
-      }, 
+      { error: 'Error loading post', details: error instanceof Error ? error.message : 'Unknown error' },
       { status: 500 }
     );
   }

src/app/api/posts/stream/route.ts

@@ -1,5 +1,5 @@
 import { NextRequest, NextResponse } from 'next/server';
-import { watchPosts, stopWatching } from '@/lib/markdown';
+import { spawn } from 'child_process';
 
 // Prevent static generation of this route
 export const dynamic = 'force-dynamic';
@@ -37,35 +37,87 @@ export async function GET(request: NextRequest) {
           return;
         }
 
-        // Set up file watcher if not already set up
+        // Set up Rust file watcher if not already set up
         if (clients.size === 1) {
           try {
-            watchPosts(() => {
-              // Notify all connected clients about the update
-              const message = JSON.stringify({ type: 'update', timestamp: new Date().toISOString() });
-              const clientsToRemove: ReadableStreamDefaultController[] = [];
+            const rustWatcher = spawn(
+              process.cwd() + '/markdown_backend/target/release/markdown_backend',
+              ['watch'],
+              { stdio: ['pipe', 'pipe', 'pipe'] }
+            );
+
+            rustWatcher.stdout.on('data', (data) => {
+              const message = data.toString().trim();
+              console.log('Rust watcher output:', message);
               
-              clients.forEach(client => {
-                try {
-                  client.enqueue(`data: ${message}\n\n`);
-                } catch (error) {
-                  // Mark client for removal
-                  clientsToRemove.push(client);
+              if (message.includes('Posts directory changed!')) {
+                // Notify all connected clients about the update
+                const updateMessage = JSON.stringify({ type: 'update', timestamp: new Date().toISOString() });
+                const clientsToRemove: ReadableStreamDefaultController[] = [];
+                
+                clients.forEach(client => {
+                  try {
+                    client.enqueue(`data: ${updateMessage}\n\n`);
+                  } catch (error) {
+                    // Mark client for removal
+                    clientsToRemove.push(client);
+                  }
+                });
+                
+                // Remove disconnected clients
+                clientsToRemove.forEach(client => {
+                  clients.delete(client);
+                });
+                
+                // Stop watching if no clients are connected
+                if (clients.size === 0) {
+                  console.log('No clients connected, stopping watcher');
+                  rustWatcher.kill();
                 }
-              });
-              
-              // Remove disconnected clients
-              clientsToRemove.forEach(client => {
-                clients.delete(client);
-              });
-              
-              // Stop watching if no clients are connected
-              if (clients.size === 0) {
-                stopWatching();
               }
             });
+
+            rustWatcher.stderr.on('data', (data) => {
+              const errorMessage = data.toString().trim();
+              console.error('Rust watcher error:', errorMessage);
+              
+              // Don't treat RecvError as a real error - it's expected when the process is terminated
+              if (!errorMessage.includes('RecvError')) {
+                // Send error to clients
+                const errorData = JSON.stringify({ type: 'error', message: errorMessage });
+                const clientsToRemove: ReadableStreamDefaultController[] = [];
+                
+                clients.forEach(client => {
+                  try {
+                    client.enqueue(`data: ${errorData}\n\n`);
+                  } catch (error) {
+                    clientsToRemove.push(client);
+                  }
+                });
+                
+                clientsToRemove.forEach(client => {
+                  clients.delete(client);
+                });
+              }
+            });
+
+            rustWatcher.on('error', (error) => {
+              console.error('Rust watcher spawn error:', error);
+            });
+
+            rustWatcher.on('close', (code) => {
+              console.log('Rust watcher closed with code:', code);
+              // Only restart if we still have clients
+              if (clients.size > 0) {
+                console.log('Restarting watcher due to unexpected close');
+                // The watcher will be restarted when the next client connects
+              }
+            });
+
+            // Store the watcher process for cleanup
+            (controller as any).rustWatcher = rustWatcher;
           } catch (error) {
-            console.error('Error setting up file watcher:', error);
+            console.error('Error setting up Rust file watcher:', error);
           }
         }
 
@@ -75,16 +127,17 @@ export async function GET(request: NextRequest) {
           
           // Stop watching if no clients are connected
           if (clients.size === 0) {
-            stopWatching();
+            const rustWatcher = (controller as any).rustWatcher;
+            if (rustWatcher) {
+              console.log('Last client disconnected, stopping watcher');
+              rustWatcher.kill();
+            }
           }
         });
       },
       cancel() {
-        // Handle stream cancellation - we can't access the specific controller here
-        // The abort event handler will handle cleanup for the specific controller
-        if (clients.size === 0) {
-          stopWatching();
-        }
+        // Handle stream cancellation - this is called when the stream is cancelled
+        // We can't access the specific controller here, so we'll handle cleanup in the abort event
       }
     });
 

src/lib/markdown.ts

@@ -1,272 +0,0 @@
-// This is the frontend Markdown parser.
-// It is written in TypeScript
-// While I was writing this, only I and God knew how it works.
-// Now, only God knows.
-//
-// If you are trying to understand how it works , and optimize it. Please increse the counter
-// 
-// Hours wasted here: 12
-
-import fs from 'fs';
-import path from 'path';
-import matter from 'gray-matter';
-import { marked } from 'marked';
-import DOMPurify from 'dompurify';
-import { JSDOM } from 'jsdom';
-import chokidar from 'chokidar';
-import type { FSWatcher } from 'chokidar';
-import hljs from 'highlight.js';
-import { getPostsDirectory } from './postsDirectory';
-
-export interface Post {
-  slug: string;
-  title: string;
-  date: string;
-  tags: string[];
-  summary: string;
-  content: string;
-  createdAt: Date;
-  author: string;
-}
-
-const postsDirectory = getPostsDirectory();
-
-// Function to get file creation date
-function getFileCreationDate(filePath: string): Date {
-  const stats = fs.statSync(filePath);
-  return stats.birthtime;
-}
-
-// Function to generate ID from text (matches frontend logic)
-function generateId(text: string): string {
-  return text
-    .toLowerCase()
-    .replace(/[^a-z0-9]+/g, '-')
-    .replace(/^-+|-+$/g, '');
-}
-
-// Enhanced slugification function that matches GitHub-style anchor links
-function slugify(text: string): string {
-  return text
-    .toLowerCase()
-    .trim()
-    .replace(/[^\w\s-]/g, '') // Remove special characters except spaces and hyphens
-    .replace(/[\s_-]+/g, '-') // Replace spaces, underscores, and multiple hyphens with single hyphen
-    .replace(/^-+|-+$/g, ''); // Remove leading/trailing hyphens
-}
-
-// Function to process anchor links in markdown content
-function processAnchorLinks(content: string): string {
-  // Find all markdown links that point to anchors (e.g., [text](#anchor))
-  return content.replace(/\[([^\]]+)\]\(#([^)]+)\)/g, (match, linkText, anchor) => {
-    // Only slugify if the anchor doesn't already look like a slug
-    // This prevents double-processing of already-correct anchor links
-    const isAlreadySlugified = /^[a-z0-9-]+$/.test(anchor);
-    const slugifiedAnchor = isAlreadySlugified ? anchor : slugify(anchor);
-    return `[${linkText}](#${slugifiedAnchor})`;
-  });
-}
-
-// Utility function to debug anchor links (for development)
-export function debugAnchorLinks(content: string): void {
-  if (process.env.NODE_ENV !== 'development') return;
-  
-  console.log('=== Anchor Link Debug Info ===');
-  
-  // Extract all headings and their IDs
-  const headingRegex = /^(#{1,6})\s+(.+)$/gm;
-  const headings: Array<{ level: number; text: string; id: string }> = [];
-  
-  let match;
-  while ((match = headingRegex.exec(content)) !== null) {
-    const level = match[1].length;
-    const text = match[2].trim();
-    const id = slugify(text);
-    headings.push({ level, text, id });
-  }
-  
-  console.log('Generated heading IDs:');
-  headings.forEach(({ level, text, id }) => {
-    console.log(`  H${level}: "${text}" -> id="${id}"`);
-  });
-  
-  // Extract all anchor links
-  const anchorLinkRegex = /\[([^\]]+)\]\(#([^)]+)\)/g;
-  const anchorLinks: Array<{ linkText: string; originalAnchor: string; slugifiedAnchor: string }> = [];
-  
-  while ((match = anchorLinkRegex.exec(content)) !== null) {
-    const linkText = match[1];
-    const originalAnchor = match[2];
-    const slugifiedAnchor = slugify(originalAnchor);
-    anchorLinks.push({ linkText, originalAnchor, slugifiedAnchor });
-  }
-  
-  console.log('Anchor links found:');
-  anchorLinks.forEach(({ linkText, originalAnchor, slugifiedAnchor }) => {
-    const headingExists = headings.some(h => h.id === slugifiedAnchor);
-    const status = headingExists ? '✅' : '❌';
-    console.log(`  ${status} [${linkText}](#${originalAnchor}) -> [${linkText}](#${slugifiedAnchor})`);
-  });
-  
-  // Show missing headings
-  const missingAnchors = anchorLinks.filter(({ slugifiedAnchor }) => 
-    !headings.some(h => h.id === slugifiedAnchor)
-  );
-  
-  if (missingAnchors.length > 0) {
-    console.warn('Missing headings for these anchor links:');
-    missingAnchors.forEach(({ linkText, originalAnchor, slugifiedAnchor }) => {
-      console.warn(`  - [${linkText}](#${originalAnchor}) -> id="${slugifiedAnchor}"`);
-    });
-  }
-  
-  console.log('=== End Debug Info ===');
-}
-
-const renderer = new marked.Renderer();
-
-// Custom heading renderer to add IDs
-renderer.heading = (text, level) => {
-  const id = slugify(text);
-  return `<h${level} id="${id}">${text}</h${level}>`;
-};
-
-renderer.code = (code, infostring, escaped) => {
-  const lang = (infostring || '').match(/\S*/)?.[0];
-  const highlighted = lang && hljs.getLanguage(lang)
-    ? hljs.highlight(code, { language: lang }).value
-    : hljs.highlightAuto(code).value;
-  const langClass = lang ? `language-${lang}` : '';
-  return `<pre><code class="hljs ${langClass}">${highlighted}</code></pre>`;
-};
-
-marked.setOptions({
-  gfm: true,
-  breaks: true,
-  renderer,
-});
-
-export async function getPostBySlug(slug: string): Promise<Post> {
-  const realSlug = slug.replace(/\.md$/, '');
-  const fullPath = path.join(postsDirectory, `${realSlug}.md`);
-  const fileContents = fs.readFileSync(fullPath, 'utf8');
-  const { data, content } = matter(fileContents);
-  const createdAt = getFileCreationDate(fullPath);
-
-  let processedContent = '';
-  try {
-    // Debug anchor links in development
-    debugAnchorLinks(content);
-    
-    // Process anchor links before parsing markdown
-    const processedMarkdown = processAnchorLinks(content);
-    const rawHtml = marked.parse(processedMarkdown);
-    const window = new JSDOM('').window;
-    const purify = DOMPurify(window);
-    processedContent = purify.sanitize(rawHtml as string, {
-      ALLOWED_TAGS: [
-        'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
-        'p', 'a', 'ul', 'ol', 'li', 'blockquote',
-        'pre', 'code', 'em', 'strong', 'del',
-        'hr', 'br', 'img', 'table', 'thead', 'tbody',
-        'tr', 'th', 'td', 'div', 'span', 'iframe'
-      ],
-      ALLOWED_ATTR: [
-        'class', 'id', 'style',
-        'href', 'target', 'rel',
-        'src', 'alt', 'title', 'width', 'height',
-        'frameborder', 'allowfullscreen'
-      ],
-      ALLOWED_URI_REGEXP: /^(?:(?:(?:f|ht)tps?|mailto|tel|callto|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i
-    });
-  } catch (err) {
-    console.error(`Error processing markdown for ${realSlug}:`, err);
-    processedContent = `<div class="error-message">
-      <p>Error processing markdown content. Please check the console for details.</p>
-      <pre>${err instanceof Error ? err.message : 'Unknown error'}</pre>
-    </div>`;
-  }
-
-  return {
-    slug: realSlug,
-    title: data.title,
-    date: data.date,
-    tags: data.tags || [],
-    summary: data.summary,
-    content: processedContent,
-    createdAt,
-    author: process.env.NEXT_PUBLIC_BLOG_OWNER || 'Anonymous',
-  };
-}
-
-export async function getAllPosts(): Promise<Post[]> {
-  const fileNames = fs.readdirSync(postsDirectory);
-  const allPostsData = await Promise.all(
-    fileNames
-      .filter((fileName) => fileName.endsWith('.md'))
-      .map(async (fileName) => {
-        const slug = fileName.replace(/\.md$/, '');
-        return getPostBySlug(slug);
-      })
-  );
-
-  // Sort by creation date (newest first)
-  return allPostsData.sort((a, b) => b.createdAt.getTime() - a.createdAt.getTime());
-}
-
-export async function getPostsByTag(tag: string): Promise<Post[]> {
-  const allPosts = await getAllPosts();
-  return allPosts.filter((post) => post.tags.includes(tag));
-}
-
-// File watcher setup
-let watcher: FSWatcher | null = null;
-let onChangeCallback: (() => void) | null = null;
-
-export function watchPosts(callback: () => void) {
-  if (watcher) {
-    watcher.close();
-  }
-
-  onChangeCallback = callback;
-  watcher = chokidar.watch(postsDirectory, {
-    ignored: [
-      /(^|[\/\\])\../, // ignore dotfiles
-      /node_modules/,
-      /\.git/,
-      /\.next/,
-      /\.cache/,
-      /\.DS_Store/,
-      /Thumbs\.db/,
-      /\.tmp$/,
-      /\.temp$/
-    ],
-    persistent: true,
-    ignoreInitial: true, // Don't trigger on initial scan
-    awaitWriteFinish: {
-      stabilityThreshold: 1000, // Wait 1 second after file changes
-      pollInterval: 100 // Check every 100ms
-    },
-    usePolling: false, // Use native file system events when possible
-    interval: 1000 // Fallback polling interval (only used if native events fail)
-  });
-
-  watcher
-    .on('add', handleFileChange)
-    .on('change', handleFileChange)
-    .on('unlink', handleFileChange);
-}
-
-function handleFileChange() {
-  if (onChangeCallback) {
-    onChangeCallback();
-  }
-}
-
-export function stopWatching() {
-  if (watcher) {
-    watcher.close();
-    watcher = null;
-  }
-  onChangeCallback = null;
-}