feat: Implement a rule engine for scriptable device automation, including an example timer light rule.

server.js

@@ -3,6 +3,7 @@ import fs from 'fs';
 import path from 'path';
 import sqlite3 from 'sqlite3';
 import { fileURLToPath } from 'url';
+import { initRuleEngine, loadRules, runRules, watchRules } from './rule_engine.js';
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
@@ -46,6 +47,35 @@ const macConnectionsMap = new Map();
 // Cache for channel IDs to avoid repeated DB lookups
 const channelCache = new Map(); // key: "mac:component:field" -> channel_id
 
+// Map MAC to WebSocket for sending RPC commands
+const macToSocket = new Map();
+
+// Send RPC command to a device by MAC
+async function sendRPCToDevice(mac, method, params = {}) {
+    const connections = macConnectionsMap.get(mac);
+    if (!connections || connections.size === 0) {
+        console.log(`[RPC] No connection for MAC=${mac}`);
+        return null;
+    }
+
+    // Get the first connection ID for this MAC
+    const connectionId = connections.values().next().value;
+
+    // Find the socket
+    for (const client of wss.clients) {
+        if (client.connectionId === connectionId) {
+            const rpcId = Math.floor(Math.random() * 10000);
+            const rpcRequest = { id: rpcId, src: 'server', method, params };
+            console.log(`[RPC] Sending to ${mac}: ${method}`, params);
+            client.send(JSON.stringify(rpcRequest));
+            return rpcId;
+        }
+    }
+
+    console.log(`[RPC] Socket not found for MAC=${mac}`);
+    return null;
+}
+
 // Get or create a channel, returns channel_id via callback
 function getOrCreateChannel(mac, component, field, type, callback) {
     const cacheKey = `${mac}:${component}:${field}`;
@@ -105,6 +135,7 @@ function checkAndLogEvent(mac, component, field, type, event, connectionId = nul
             if (connectionId) console.log(`[ID: ${connectionId}] Event logged: ${event} on ${component} (${field})`);
             db.run("INSERT INTO events (channel_id, event, timestamp) VALUES (?, ?, ?)", [channelId, String(event), new Date().toISOString()]);
             forwardToUpstream();
+            runRules(mac, component, field, type, event);
             return;
         }
 
@@ -121,6 +152,7 @@ function checkAndLogEvent(mac, component, field, type, event, connectionId = nul
                 if (connectionId) console.log(`[ID: ${connectionId}] Status change logged: ${event} on ${component} (${field})`);
                 db.run("INSERT INTO events (channel_id, event, timestamp) VALUES (?, ?, ?)", [channelId, currentEventStr, new Date().toISOString()]);
                 forwardToUpstream();
+                runRules(mac, component, field, type, currentEventStr);
             }
         });
     });
@@ -130,6 +162,15 @@ const wss = new WebSocketServer({ port: 8080 });
 
 console.log('Shelly Agent Server listening on port 8080');
 
+// Initialize and load rules
+initRuleEngine(db, sendRPCToDevice);
+loadRules().then(() => {
+    console.log('Rule engine ready');
+    watchRules(); // Auto-reload rules when files change
+}).catch(err => {
+    console.error('Error loading rules:', err);
+});
+
 // Global counter for connection IDs
 let connectionIdCounter = 0;