MVP

restore_session.js

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+// ===== RESTORE SESSION =====
+// This function is called when user clicks "Restore Session" button
+// msg.payload should contain the session data from the recovery prompt
+
+const sessionData = msg.payload;
+
+if (!sessionData || !sessionData.session_id) {
+    node.error("No valid session data provided for restoration");
+    msg.error = "Invalid session data";
+    return [null, msg];  // Output 2: error message
+}
+
+try {
+    // Restore global context variables
+    global.set("currentSessionId", sessionData.session_id);
+    global.set("productionStartTime", sessionData.production_start_time);
+    global.set("operatingTime", sessionData.operating_time || 0);
+    global.set("trackingEnabled", sessionData.tracking_enabled === 1);
+    global.set("cycleCount", sessionData.cycle_count || 0);
+    global.set("machineOnline", sessionData.machine_online === 1);
+    global.set("productionStarted", sessionData.production_started === 1);
+    global.set("lastCycleTime", sessionData.last_cycle_time);
+
+    // Restore flow context variables
+    flow.set("lastMachineState", sessionData.last_machine_state || 0);
+
+    // Restore active work order if exists
+    if (sessionData.active_work_order_data) {
+        try {
+            const workOrder = typeof sessionData.active_work_order_data === 'string'
+                ? JSON.parse(sessionData.active_work_order_data)
+                : sessionData.active_work_order_data;
+            global.set("activeWorkOrder", workOrder);
+
+            // Also need to update work order status in database
+            const updateMsg = {
+                topic: `
+                    UPDATE work_orders
+                    SET status = 'RUNNING', updated_at = NOW()
+                    WHERE work_order_id = '${workOrder.id}';
+                `,
+                _mode: "restore-work-order-status"
+            };
+
+            node.warn(`Session restored: ${sessionData.session_id} | Work Order: ${workOrder.id} | Cycles: ${sessionData.cycle_count}`);
+
+            msg._recoveryStatus = "restored";
+            msg.payload = {
+                success: true,
+                type: "success",
+                message: `Session restored successfully! Work Order ${workOrder.id} is now active with ${sessionData.cycle_count} cycles completed.`,
+                sessionId: sessionData.session_id,
+                workOrder: workOrder
+            };
+
+            return [updateMsg, msg];  // Output 1: DB update, Output 2: success message
+
+        } catch (e) {
+            node.error("Failed to parse work order data: " + e.message);
+            throw e;
+        }
+    } else {
+        // No active work order in session
+        node.warn(`Session restored: ${sessionData.session_id} | No active work order`);
+
+        msg._recoveryStatus = "restored-no-wo";
+        msg.payload = {
+            success: true,
+            type: "info",
+            message: "Session restored, but no active work order was found. You can start a new work order.",
+            sessionId: sessionData.session_id
+        };
+
+        return [null, msg];  // Output 2: info message
+    }
+
+} catch (error) {
+    node.error("Error restoring session: " + error.message);
+    msg._recoveryStatus = "restore-failed";
+    msg.payload = {
+        success: false,
+        type: "error",
+        message: "Failed to restore session: " + error.message
+    };
+    return [null, msg];  // Output 2: error message
+}