Add headless vault REST API server (replaces Obsidian Desktop)

vault-server.js

@@ -0,0 +1,230 @@
+#!/usr/bin/env node
+/**
+ * Obsidian Vault Headless REST API Server
+ * Reads vault files directly without requiring Obsidian Desktop app
+ * Provides REST API compatible with obsidian-mcp-server expectations
+ */
+
+const fs = require('fs');
+const path = require('path');
+const crypto = require('crypto');
+
+// Simple HTTP server (no dependencies needed)
+const http = require('http');
+
+const VAULT_PATH = process.env.VAULT_PATH || '/workspace/second-brain';
+const PORT = process.env.PORT || 27123;
+const API_KEY = process.env.OBSIDIAN_API_KEY || 'default-api-key-set-env-var';
+
+console.log(`📚 Obsidian Vault Server`);
+console.log(`Vault: ${VAULT_PATH}`);
+console.log(`Port: ${PORT}`);
+console.log(`API Key: ${API_KEY.slice(0, 8)}...`);
+
+// Authenticate requests
+const authenticateRequest = (req) => {
+  const auth = req.headers['authorization'];
+  if (!auth) return false;
+  
+  const token = auth.replace('Bearer ', '');
+  return token === API_KEY;
+};
+
+// Read file safely
+const readFile = (filePath) => {
+  const fullPath = path.join(VAULT_PATH, filePath);
+  
+  // Prevent directory traversal
+  if (!fullPath.startsWith(VAULT_PATH)) {
+    return null;
+  }
+  
+  try {
+    return fs.readFileSync(fullPath, 'utf8');
+  } catch (e) {
+    return null;
+  }
+};
+
+// List files in directory
+const listDir = (dirPath) => {
+  const fullPath = path.join(VAULT_PATH, dirPath);
+  
+  if (!fullPath.startsWith(VAULT_PATH)) {
+    return [];
+  }
+  
+  try {
+    const entries = fs.readdirSync(fullPath, { withFileTypes: true });
+    return entries
+      .filter(e => !e.name.startsWith('.'))
+      .map(e => ({
+        name: e.name,
+        isDirectory: e.isDirectory()
+      }));
+  } catch (e) {
+    return [];
+  }
+};
+
+// Search files
+const searchVault = (query) => {
+  const results = [];
+  
+  const search = (dir) => {
+    try {
+      const entries = fs.readdirSync(dir, { withFileTypes: true });
+      
+      for (const entry of entries) {
+        if (entry.name.startsWith('.')) continue;
+        
+        const fullPath = path.join(dir, entry.name);
+        
+        if (entry.isDirectory()) {
+          search(fullPath);
+        } else if (entry.name.endsWith('.md')) {
+          try {
+            const content = fs.readFileSync(fullPath, 'utf8');
+            if (content.includes(query)) {
+              const relativePath = path.relative(VAULT_PATH, fullPath);
+              results.push({
+                file: relativePath,
+                match: content.substring(0, 200)
+              });
+            }
+          } catch (e) {
+            // Skip unreadable files
+          }
+        }
+      }
+    } catch (e) {
+      // Skip inaccessible directories
+    }
+  };
+  
+  search(VAULT_PATH);
+  return results;
+};
+
+// Simple JSON response
+const jsonResponse = (res, statusCode, data) => {
+  res.writeHead(statusCode, { 'Content-Type': 'application/json' });
+  res.end(JSON.stringify(data, null, 2));
+};
+
+// Create server
+const server = http.createServer((req, res) => {
+  // CORS
+  res.setHeader('Access-Control-Allow-Origin', '*');
+  res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
+  res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization');
+  
+  if (req.method === 'OPTIONS') {
+    res.writeHead(200);
+    res.end();
+    return;
+  }
+  
+  // Authenticate
+  if (!authenticateRequest(req)) {
+    jsonResponse(res, 401, { error: 'Unauthorized' });
+    return;
+  }
+  
+  const url = new URL(req.url, `http://${req.headers.host}`);
+  const pathname = url.pathname;
+  
+  // Routes
+  if (pathname === '/' && req.method === 'GET') {
+    // Health check
+    jsonResponse(res, 200, { 
+      app: 'obsidian-vault-server',
+      vault: VAULT_PATH,
+      status: 'running'
+    });
+    return;
+  }
+  
+  if (pathname.startsWith('/vault/read') && req.method === 'GET') {
+    // Read file
+    const filePath = url.searchParams.get('path');
+    if (!filePath) {
+      jsonResponse(res, 400, { error: 'Missing path parameter' });
+      return;
+    }
+    
+    const content = readFile(filePath);
+    if (content === null) {
+      jsonResponse(res, 404, { error: 'File not found' });
+      return;
+    }
+    
+    jsonResponse(res, 200, {
+      path: filePath,
+      content: content,
+      stat: {
+        ctime: Date.now(),
+        mtime: Date.now(),
+        size: content.length
+      }
+    });
+    return;
+  }
+  
+  if (pathname.startsWith('/vault/search') && req.method === 'GET') {
+    // Search vault
+    const query = url.searchParams.get('query');
+    if (!query) {
+      jsonResponse(res, 400, { error: 'Missing query parameter' });
+      return;
+    }
+    
+    const results = searchVault(query);
+    jsonResponse(res, 200, {
+      query: query,
+      results: results,
+      count: results.length
+    });
+    return;
+  }
+  
+  if (pathname.startsWith('/vault/list') && req.method === 'GET') {
+    // List directory
+    const dirPath = url.searchParams.get('path') || '/';
+    const entries = listDir(dirPath);
+    
+    jsonResponse(res, 200, {
+      path: dirPath,
+      entries: entries,
+      count: entries.length
+    });
+    return;
+  }
+  
+  // 404
+  jsonResponse(res, 404, { error: 'Not found' });
+});
+
+server.listen(PORT, () => {
+  console.log(`✅ Vault server listening on http://127.0.0.1:${PORT}`);
+  console.log(`\nEndpoints:`);
+  console.log(`  GET  / - Health check`);
+  console.log(`  GET  /vault/read?path=file.md - Read file`);
+  console.log(`  GET  /vault/list?path=/ - List directory`);
+  console.log(`  GET  /vault/search?query=text - Search vault`);
+  console.log(`\nAll requests require: Authorization: Bearer <API_KEY>`);
+});
+
+server.on('error', (err) => {
+  console.error('❌ Server error:', err);
+  process.exit(1);
+});
+
+// Graceful shutdown
+process.on('SIGINT', () => {
+  console.log('\n👋 Shutting down...');
+  server.close(() => {
+    console.log('Goodbye!');
+    process.exit(0);
+  });
+});