feat: upgrade to A2A Server v2.0 with real agent logic

server.js

@@ -1,15 +1,13 @@
 const express = require('express');
+const { exec } = require('child_process');
 const path = require('path');
 const fs = require('fs');
 
 const app = express();
 const PORT = process.env.PORT || 7860;
-
-// Agent name from env or default
 const AGENT_NAME = process.env.AGENT_NAME || 'SIN-Agent';
 const AGENT_DESCRIPTION = process.env.AGENT_DESCRIPTION || 'SIN A2A Agent';
 
-// Middleware
 app.use(express.json());
 app.use(express.static(path.join(__dirname, 'public')));
 
@@ -18,9 +16,11 @@ app.get('/health', (req, res) => {
   res.json({
     status: 'ok',
     agent: AGENT_NAME,
+    description: AGENT_DESCRIPTION,
     timestamp: new Date().toISOString(),
     uptime: process.uptime(),
-    version: '1.0.0'
+    version: '2.0.0',
+    capabilities: ['chat', 'task', 'help', 'status', 'execute']
   });
 });
 
@@ -35,14 +35,20 @@ app.get('/.well-known/agent-card.json', (req, res) => {
       description: AGENT_DESCRIPTION,
       url: `https://${process.env.SPACE_HOST || 'localhost'}/a2a/v1`,
       protocol: 'A2A',
-      version: '1.0.0',
-      capabilities: ['chat', 'task'],
+      version: '2.0.0',
+      capabilities: ['chat', 'task', 'help', 'status', 'execute'],
+      commands: [
+        { name: 'agent.help', description: 'Show available commands' },
+        { name: 'agent.health', description: 'Check agent health' },
+        { name: 'agent.status', description: 'Show agent status' },
+        { name: 'agent.execute', description: 'Execute a command' }
+      ],
       status: 'active'
     });
   }
 });
 
-// A2A v1 endpoint
+// A2A v1 endpoint - REAL AGENT LOGIC
 app.post('/a2a/v1', async (req, res) => {
   try {
     const { action, params } = req.body;
@@ -53,8 +59,13 @@ app.post('/a2a/v1', async (req, res) => {
           result: {
             name: AGENT_NAME,
             description: AGENT_DESCRIPTION,
-            commands: ['help', 'health', 'status'],
-            version: '1.0.0'
+            version: '2.0.0',
+            commands: [
+              { name: 'agent.help', description: 'Show available commands' },
+              { name: 'agent.health', description: 'Check agent health' },
+              { name: 'agent.status', description: 'Show agent status' },
+              { name: 'agent.execute', description: 'Execute a command', params: { command: 'string' } }
+            ]
           }
         });
         break;
@@ -64,27 +75,48 @@ app.post('/a2a/v1', async (req, res) => {
           result: {
             status: 'ok',
             agent: AGENT_NAME,
-            uptime: process.uptime()
+            uptime: process.uptime(),
+            memory: process.memoryUsage(),
+            timestamp: new Date().toISOString()
           }
         });
         break;
       
-      case 'agent.card':
+      case 'agent.status':
         res.json({
           result: {
-            name: AGENT_NAME,
-            description: AGENT_DESCRIPTION,
-            protocol: 'A2A',
-            version: '1.0.0'
+            agent: AGENT_NAME,
+            status: 'active',
+            version: '2.0.0',
+            capabilities: ['chat', 'task', 'help', 'status', 'execute'],
+            uptime: process.uptime()
           }
         });
         break;
       
+      case 'agent.execute':
+        if (!params || !params.command) {
+          res.json({ error: 'Missing command parameter', usage: 'agent.execute({ command: "ls -la" })' });
+          break;
+        }
+        exec(params.command, { timeout: 30000 }, (error, stdout, stderr) => {
+          res.json({
+            result: {
+              command: params.command,
+              stdout: stdout || '',
+              stderr: stderr || '',
+              error: error ? error.message : null
+            }
+          });
+        });
+        break;
+      
       default:
         res.json({
           result: {
             message: `Unknown action: ${action}. Use 'agent.help' for available commands.`,
-            agent: AGENT_NAME
+            agent: AGENT_NAME,
+            available_actions: ['agent.help', 'agent.health', 'agent.status', 'agent.execute']
           }
         });
     }
@@ -102,12 +134,13 @@ app.get('/a2a/v1', (req, res) => {
     name: AGENT_NAME,
     description: AGENT_DESCRIPTION,
     protocol: 'A2A',
-    version: '1.0.0',
+    version: '2.0.0',
     endpoints: {
       post: '/a2a/v1',
       card: '/.well-known/agent-card.json',
       health: '/health'
-    }
+    },
+    capabilities: ['chat', 'task', 'help', 'status', 'execute']
   });
 });
 
@@ -117,17 +150,20 @@ app.get('/', (req, res) => {
     name: AGENT_NAME,
     description: AGENT_DESCRIPTION,
     status: 'active',
+    version: '2.0.0',
     endpoints: {
       health: '/health',
       a2a: '/a2a/v1',
       card: '/.well-known/agent-card.json'
-    }
+    },
+    capabilities: ['chat', 'task', 'help', 'status', 'execute']
   });
 });
 
 // Start server
 app.listen(PORT, '0.0.0.0', () => {
-  console.log(`${AGENT_NAME} listening on port ${PORT}`);
+  console.log(`${AGENT_NAME} v2.0.0 listening on port ${PORT}`);
   console.log(`Health: http://localhost:${PORT}/health`);
   console.log(`A2A: http://localhost:${PORT}/a2a/v1`);
+  console.log(`Capabilities: chat, task, help, status, execute`);
 });