initial project setup

services/api-gateway/src/main/java/com/labfusion/controller/SystemController.java

@@ -0,0 +1,71 @@
+package com.labfusion.controller;
+
+import com.labfusion.model.DeviceState;
+import com.labfusion.model.Event;
+import com.labfusion.repository.DeviceStateRepository;
+import com.labfusion.repository.EventRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@RestController
+@RequestMapping("/api/system")
+@CrossOrigin(origins = "*")
+public class SystemController {
+    
+    @Autowired
+    private EventRepository eventRepository;
+    
+    @Autowired
+    private DeviceStateRepository deviceStateRepository;
+    
+    @GetMapping("/events")
+    public ResponseEntity<List<Event>> getEvents(
+            @RequestParam(required = false) String service,
+            @RequestParam(required = false) String eventType,
+            @RequestParam(required = false) Integer hours) {
+        
+        List<Event> events;
+        
+        if (service != null && hours != null) {
+            LocalDateTime since = LocalDateTime.now().minusHours(hours);
+            events = eventRepository.findRecentEventsByService(service, since);
+        } else if (service != null) {
+            events = eventRepository.findByService(service);
+        } else if (eventType != null) {
+            events = eventRepository.findByEventType(eventType);
+        } else {
+            events = eventRepository.findAll();
+        }
+        
+        return ResponseEntity.ok(events);
+    }
+    
+    @GetMapping("/device-states")
+    public ResponseEntity<List<DeviceState>> getDeviceStates(
+            @RequestParam(required = false) String entityId,
+            @RequestParam(required = false) String service) {
+        
+        List<DeviceState> states;
+        
+        if (entityId != null) {
+            states = deviceStateRepository.findByEntityId(entityId);
+        } else if (service != null) {
+            states = deviceStateRepository.findByService(service);
+        } else {
+            states = deviceStateRepository.findAll();
+        }
+        
+        return ResponseEntity.ok(states);
+    }
+    
+    @GetMapping("/metrics")
+    public ResponseEntity<Object> getSystemMetrics() {
+        // This would integrate with actual system monitoring
+        // For now, return a placeholder response
+        return ResponseEntity.ok().body("System metrics endpoint - to be implemented");
+    }
+}