event

src/app.rs

@@ -0,0 +1,365 @@
+//! Application orchestrator and dependency manager
+//!
+//! This module provides a centralized Application struct that handles
+//! initialization, lifecycle management, and component wiring.
+
+use anyhow::{Context, Result};
+use chrono::Utc;
+use log::{info, error, warn, debug};
+use std::sync::{Arc, Mutex as StdMutex};
+use tokio::sync::{Mutex, mpsc};
+use tokio::task::{JoinHandle};
+use tokio::signal;
+
+use crate::camera::{self, CameraController, Frame, MeteorEvent};
+use crate::config::{self, Config};
+use crate::detection::{self, DetectionPipeline};
+use crate::events::{EventBus, GpsStatusEvent, EnvironmentEvent, FrameEvent, DetectionEvent};
+use crate::gps::{self, GpsController, GpsStatus};
+use crate::hooks::{self, HookManager};
+use crate::monitoring::{self, SystemMonitor};
+use crate::overlay::{self, watermark};
+use crate::sensors::{self, SensorController, EnvironmentData};
+use crate::storage::{self, StorageManager};
+use crate::streaming::{self, RtspServer};
+use crate::communication::{self, CommunicationManager};
+
+/// Main application orchestrator
+pub struct Application {
+    /// Application configuration
+    config: Config,
+    /// Event bus for component communication
+    event_bus: EventBus,
+    /// Collection of background tasks
+    tasks: Vec<JoinHandle<()>>,
+    /// Set to true when application shutdown has been requested
+    shutdown_requested: bool,
+    
+    // Core components
+    camera_controller: Option<Arc<Mutex<CameraController>>>,
+    gps_controller: Option<Arc<Mutex<GpsController>>>,
+    sensor_controller: Option<Arc<Mutex<SensorController>>>,
+    detection_pipeline: Option<Arc<Mutex<detection::DetectionPipeline>>>,
+    hook_manager: Option<Arc<Mutex<HookManager>>>,
+    watermark: Option<Arc<Mutex<watermark::Watermark>>>,
+    storage_manager: Option<storage::StorageManager>,
+    communication_manager: Option<Arc<Mutex<communication::CommunicationManager>>>,
+    rtsp_server: Option<Arc<Mutex<RtspServer>>>,
+    system_monitor: Option<monitoring::SystemMonitor>,
+}
+
+impl Application {
+    /// Create a new application instance with the given configuration
+    pub fn new(config: Config) -> Self {
+        Self {
+            config,
+            event_bus: EventBus::new(),
+            tasks: Vec::new(),
+            shutdown_requested: false,
+            
+            camera_controller: None,
+            gps_controller: None,
+            sensor_controller: None,
+            detection_pipeline: None,
+            hook_manager: None,
+            watermark: None,
+            storage_manager: None,
+            communication_manager: None,
+            rtsp_server: None,
+            system_monitor: None,
+        }
+    }
+    
+    /// Initialize the application components
+    pub async fn initialize(&mut self) -> Result<()> {
+        info!("Initializing application components");
+        
+        // Initialize camera
+        let camera_controller = camera::CameraController::new(&self.config)
+            .await
+            .context("Failed to initialize camera")?;
+        self.camera_controller = Some(Arc::new(Mutex::new(camera_controller)));
+        
+        // Initialize GPS
+        let gps_controller = gps::GpsController::new(&self.config)
+            .await
+            .context("Failed to initialize GPS")?;
+        self.gps_controller = Some(Arc::new(Mutex::new(gps_controller)));
+        
+        // Initialize sensors
+        let sensor_controller = sensors::SensorController::new(&self.config)
+            .await
+            .context("Failed to initialize sensors")?;
+        self.sensor_controller = Some(Arc::new(Mutex::new(sensor_controller)));
+        
+        // Initialize hook manager
+        let hook_manager = hooks::HookManager::new();
+        self.hook_manager = Some(Arc::new(Mutex::new(hook_manager)));
+        
+        // Initialize watermark
+        // Note: This still uses the old approach with direct dependencies.
+        // In a future refactoring, this would be updated to use event subscriptions.
+        let watermark = {
+            let gps_status = self.gps_controller.as_ref().unwrap().lock().await.get_status();
+            let env_data = self.sensor_controller.as_ref().unwrap().lock().await.get_current_data();
+            
+            overlay::watermark::Watermark::new(
+                self.config.watermark.clone(),
+                Arc::new(StdMutex::new(env_data)),
+                Arc::new(StdMutex::new(gps_status)),
+            )
+        };
+        self.watermark = Some(Arc::new(Mutex::new(watermark)));
+        
+        // Initialize RTSP server if enabled
+        if self.config.rtsp.enabled {
+            let rtsp_server = streaming::RtspServer::new(self.config.rtsp.clone());
+            self.rtsp_server = Some(Arc::new(Mutex::new(rtsp_server)));
+        }
+        
+        // Initialize detection pipeline
+        // Note: This still uses the original constructor that takes a direct dependency
+        // on the camera controller. In a future refactoring, this would be updated to 
+        // use frame events instead.
+        let detection_pipeline = detection::DetectionPipeline::new(
+            self.camera_controller.as_ref().unwrap().clone(),
+            &self.config,
+            self.config.detection.pipeline.clone()
+        ).context("Failed to initialize detection pipeline")?;
+        self.detection_pipeline = Some(Arc::new(Mutex::new(detection_pipeline)));
+        
+        // Initialize storage
+        let storage_manager = storage::StorageManager::new(&self.config)
+            .await
+            .context("Failed to initialize storage")?;
+        self.storage_manager = Some(storage_manager);
+        
+        // Initialize communication
+        // Note: This still uses the original constructor with direct dependencies.
+        // In a future refactoring, this would be updated to use event subscriptions.
+        let communication_manager = communication::CommunicationManager::new(
+            &self.config,
+            self.camera_controller.as_ref().unwrap().clone(),
+            self.gps_controller.as_ref().unwrap().clone(),
+        ).await.context("Failed to initialize communication")?;
+        self.communication_manager = Some(Arc::new(Mutex::new(communication_manager)));
+        
+        // Initialize monitoring
+        let system_monitor = monitoring::SystemMonitor::new(&self.config)
+            .await
+            .context("Failed to initialize system monitor")?;
+        self.system_monitor = Some(system_monitor);
+        
+        info!("All application components initialized");
+        Ok(())
+    }
+    
+    /// Start application components and set up event handlers
+    pub async fn start(&mut self) -> Result<()> {
+        info!("Starting application components");
+        
+        // Setup frame hook for watermark
+        {
+            if let (Some(hook_manager), Some(watermark)) = (&self.hook_manager, &self.watermark) {
+                let mut manager = hook_manager.lock().await;
+                let watermark_clone = watermark.clone();
+                manager.register_hook(Box::new(hooks::BasicFrameHook::new(
+                    "watermark",
+                    "Watermark Overlay",
+                    "Adds timestamp, GPS, and sensor data overlay to frames",
+                    self.config.watermark.enabled,
+                    move |frame, timestamp| {
+                        // Using block_in_place to properly handle async operations in sync context
+                        tokio::task::block_in_place(|| {
+                            let mut guard = futures::executor::block_on(watermark_clone.lock());
+                            guard.apply(frame, timestamp)
+                        })
+                    },
+                )));
+            }
+        }
+        
+        // Start sensors
+        if let Some(controller) = &self.sensor_controller {
+            controller.lock().await.initialize().await
+                .context("Failed to initialize sensors")?;
+            controller.lock().await.start().await
+                .context("Failed to start sensors")?;
+                
+            // Add task to bridge sensor data to event bus (publisher)
+            let event_sender = self.event_bus.environment_sender();
+            let controller_clone = controller.clone();
+            self.tasks.push(tokio::spawn(async move {
+                let mut interval = tokio::time::interval(tokio::time::Duration::from_secs(1));
+                
+                loop {
+                    interval.tick().await;
+                    
+                    let env_data = match controller_clone.lock().await.get_current_data() {
+                        data => data.clone(),
+                    };
+                    
+                    let event = EnvironmentEvent {
+                        timestamp: Utc::now(),
+                        temperature: env_data.temperature,
+                        humidity: env_data.humidity,
+                        sky_brightness: env_data.sky_brightness,
+                    };
+                    
+                    if let Err(e) = event_sender.send(event) {
+                        warn!("Failed to publish environment event: {}", e);
+                    }
+                }
+            }));
+        }
+        
+        // Start GPS
+        if let Some(controller) = &self.gps_controller {
+            controller.lock().await.initialize().await
+                .context("Failed to initialize GPS")?;
+            controller.lock().await.start().await
+                .context("Failed to start GPS")?;
+                
+            // Add task to bridge GPS data to event bus
+            let event_sender = self.event_bus.gps_sender();
+            let controller_clone = controller.clone();
+            self.tasks.push(tokio::spawn(async move {
+                let mut interval = tokio::time::interval(tokio::time::Duration::from_secs(1));
+                
+                loop {
+                    interval.tick().await;
+                    
+                    let gps_status = match controller_clone.lock().await.get_status() {
+                        status => status.clone(),
+                    };
+                    
+                    let event = GpsStatusEvent {
+                        timestamp: Utc::now(),
+                        latitude: gps_status.position.latitude,
+                        longitude: gps_status.position.longitude,
+                        altitude: gps_status.position.altitude,
+                        azimuth: gps_status.camera_orientation.azimuth,
+                        elevation: gps_status.camera_orientation.elevation,
+                        sync_status: gps_status.sync_status.clone(),
+                        time_accuracy_ms: gps_status.time_accuracy_ms,
+                        satellites: gps_status.satellites,
+                    };
+                    
+                    if let Err(e) = event_sender.send(event) {
+                        warn!("Failed to publish GPS event: {}", e);
+                    }
+                }
+            }));
+        }
+        
+        // Start RTSP server if enabled
+        if let Some(rtsp_server) = &self.rtsp_server {
+            rtsp_server.lock().await.start().await
+                .context("Failed to start RTSP server")?;
+            info!("RTSP server started at {}", rtsp_server.lock().await.get_url());
+            
+            // Add task to feed frames to RTSP server
+            // This would be replaced with an event subscription in a future refactoring
+            let server_clone = rtsp_server.clone();
+            let rtsp_enabled = self.config.rtsp.enabled;
+            self.tasks.push(tokio::spawn(async move {
+                if rtsp_enabled {
+                    info!("Starting RTSP streaming task");
+                    
+                    // Implement a proper continuous loop to keep the task alive
+                    loop {
+                        // This would normally feed frames to the RTSP server
+                        // For now, just sleep to keep the task alive
+                        tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
+                    }
+                }
+            }));
+        }
+        
+        // Start detection pipeline and connect it to the event bus
+        if let Some(pipeline) = &self.detection_pipeline {
+            // Spawn detection pipeline task
+            let pipeline_clone = pipeline.clone();
+            self.tasks.push(tokio::spawn(async move {
+                if let Err(e) = pipeline_clone.lock().await.run().await {
+                    error!("Detection pipeline error: {}", e);
+                }
+            }));
+            
+            // In a future refactoring, we'd add an adapter here to transform
+            // detection pipeline events into DetectionEvent messages on the event bus
+        }
+        
+        // Start communication manager
+        if let Some(comms) = &self.communication_manager {
+            // Spawn communication task using a cloned Arc<Mutex<...>>
+            let comms_clone = comms.clone();
+            self.tasks.push(tokio::spawn(async move {
+                if let Err(e) = comms_clone.lock().await.run().await {
+                    error!("Communication manager error: {}", e);
+                }
+            }));
+            
+            // Note: We've moved the communication manager into the task
+            // In a future event-based architecture, we'd have a CommunicationService 
+            // that would act on events from the event bus instead of having direct 
+            // dependencies on other components
+        }
+        
+        // Start system monitor
+        if let Some(monitor) = self.system_monitor.take() {
+            // Spawn monitor task and move ownership to the task
+            self.tasks.push(tokio::spawn(async move {
+                if let Err(e) = monitor.run().await {
+                    error!("System monitor error: {}", e);
+                }
+            }));
+            
+            // Note: We've moved the system monitor into the task
+            // In a future event-based architecture, the monitoring would 
+            // likely subscribe to events from other components
+        }
+        
+        info!("All application components started");
+        Ok(())
+    }
+    
+    /// Run the application until shutdown is requested
+    pub async fn run(&mut self) -> Result<()> {
+        info!("Application running, press Ctrl+C to exit");
+        
+        // Wait for shutdown signal
+        match signal::ctrl_c().await {
+            Ok(()) => {
+                info!("Shutdown signal received, preparing to exit");
+                self.shutdown_requested = true;
+            }
+            Err(err) => {
+                error!("Error waiting for Ctrl+C: {}", err);
+            }
+        }
+        
+        // Shutdown all tasks
+        for task in self.tasks.drain(..) {
+            task.abort();
+        }
+        
+        info!("Application shutdown complete");
+        Ok(())
+    }
+    
+    /// Request application shutdown
+    pub fn request_shutdown(&mut self) {
+        self.shutdown_requested = true;
+    }
+    
+    /// Get a reference to the event bus
+    pub fn event_bus(&self) -> &EventBus {
+        &self.event_bus
+    }
+    
+    /// Get a mutable reference to the event bus
+    pub fn event_bus_mut(&mut self) -> &mut EventBus {
+        &mut self.event_bus
+    }
+}

src/events/mod.rs

@@ -0,0 +1,212 @@
+//! Event system for decoupled communication between components
+//! 
+//! This module provides a publish-subscribe based event system that allows
+//! components to communicate without direct dependencies on each other.
+
+use anyhow::Result;
+use chrono::{DateTime, Utc};
+use log::debug;
+use serde::{Serialize, Deserialize};
+use std::fmt;
+use tokio::sync::broadcast;
+
+/// Maximum capacity for broadcast channels
+const DEFAULT_CHANNEL_CAPACITY: usize = 32;
+
+/// GPS position update event
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GpsStatusEvent {
+    /// Timestamp of the update
+    pub timestamp: DateTime<Utc>,
+    /// Latitude in decimal degrees
+    pub latitude: f64,
+    /// Longitude in decimal degrees
+    pub longitude: f64,
+    /// Altitude in meters
+    pub altitude: f64,
+    /// Azimuth/heading in degrees
+    pub azimuth: f64,
+    /// Elevation in degrees
+    pub elevation: f64,
+    /// Time synchronization status
+    pub sync_status: String,
+    /// Estimated time accuracy in milliseconds
+    pub time_accuracy_ms: f64,
+    /// Number of satellites
+    pub satellites: u8,
+}
+
+impl fmt::Display for GpsStatusEvent {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "GPS({:.6},{:.6},{:.1}m)", 
+            self.latitude, self.longitude, self.altitude)
+    }
+}
+
+/// Environment sensor data update event
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct EnvironmentEvent {
+    /// Timestamp of the update
+    pub timestamp: DateTime<Utc>,
+    /// Temperature in Celsius
+    pub temperature: f32,
+    /// Humidity as percentage (0-100)
+    pub humidity: f32,
+    /// Sky brightness level (0-1, where 0 is completely dark)
+    pub sky_brightness: f32,
+}
+
+impl fmt::Display for EnvironmentEvent {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "Env({:.1}°C, {:.1}%, brightness={:.2})", 
+            self.temperature, self.humidity, self.sky_brightness)
+    }
+}
+
+/// Frame available event
+#[derive(Debug, Clone)]
+pub struct FrameEvent {
+    /// Timestamp of the frame
+    pub timestamp: DateTime<Utc>,
+    /// Frame index
+    pub index: u64,
+    /// Frame data - using a Vec<u8> here to simplify the event system
+    /// In a real implementation, you might use a more efficient representation
+    /// or an ID that can be used to fetch the frame from a buffer
+    pub frame_id: u64,
+}
+
+/// Detection event
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DetectionEvent {
+    /// Timestamp of the detection
+    pub timestamp: DateTime<Utc>,
+    /// Confidence score (0.0-1.0)
+    pub confidence: f32,
+    /// Detector ID that triggered the detection
+    pub detector_id: String,
+    /// Bounding box in format (x, y, width, height)
+    pub bounding_box: Option<(i32, i32, i32, i32)>,
+    /// Frame index that triggered the detection
+    pub frame_index: u64,
+    /// Start frame index (for the event buffer)
+    pub start_frame: u64,
+    /// End frame index (for the event buffer)
+    pub end_frame: u64,
+}
+
+impl fmt::Display for DetectionEvent {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(f, "Detection({}, conf={:.2})", 
+            self.detector_id, self.confidence)
+    }
+}
+
+/// Event bus for managing various event channels
+#[derive(Debug, Clone)]
+pub struct EventBus {
+    /// GPS status update channel
+    gps_tx: broadcast::Sender<GpsStatusEvent>,
+    /// Environment data update channel
+    env_tx: broadcast::Sender<EnvironmentEvent>,
+    /// Frame available channel
+    frame_tx: broadcast::Sender<FrameEvent>,
+    /// Detection event channel
+    detection_tx: broadcast::Sender<DetectionEvent>,
+}
+
+impl EventBus {
+    /// Create a new event bus with default channel capacities
+    pub fn new() -> Self {
+        Self::with_capacity(DEFAULT_CHANNEL_CAPACITY)
+    }
+
+    /// Create a new event bus with specified channel capacity
+    pub fn with_capacity(capacity: usize) -> Self {
+        let (gps_tx, _) = broadcast::channel(capacity);
+        let (env_tx, _) = broadcast::channel(capacity);
+        let (frame_tx, _) = broadcast::channel(capacity);
+        let (detection_tx, _) = broadcast::channel(capacity);
+
+        Self {
+            gps_tx,
+            env_tx,
+            frame_tx,
+            detection_tx,
+        }
+    }
+
+    /// Get a GPS status event sender
+    pub fn gps_sender(&self) -> broadcast::Sender<GpsStatusEvent> {
+        self.gps_tx.clone()
+    }
+
+    /// Subscribe to GPS status events
+    pub fn subscribe_gps(&self) -> broadcast::Receiver<GpsStatusEvent> {
+        self.gps_tx.subscribe()
+    }
+
+    /// Get an environment event sender
+    pub fn environment_sender(&self) -> broadcast::Sender<EnvironmentEvent> {
+        self.env_tx.clone()
+    }
+
+    /// Subscribe to environment events
+    pub fn subscribe_environment(&self) -> broadcast::Receiver<EnvironmentEvent> {
+        self.env_tx.subscribe()
+    }
+
+    /// Get a frame event sender
+    pub fn frame_sender(&self) -> broadcast::Sender<FrameEvent> {
+        self.frame_tx.clone()
+    }
+
+    /// Subscribe to frame events
+    pub fn subscribe_frames(&self) -> broadcast::Receiver<FrameEvent> {
+        self.frame_tx.subscribe()
+    }
+
+    /// Get a detection event sender
+    pub fn detection_sender(&self) -> broadcast::Sender<DetectionEvent> {
+        self.detection_tx.clone()
+    }
+
+    /// Subscribe to detection events
+    pub fn subscribe_detections(&self) -> broadcast::Receiver<DetectionEvent> {
+        self.detection_tx.subscribe()
+    }
+
+    /// Publish a GPS status event
+    pub fn publish_gps(&self, event: GpsStatusEvent) -> Result<()> {
+        let count = self.gps_tx.send(event.clone())?;
+        debug!("Published GPS event {} to {} receivers", event, count);
+        Ok(())
+    }
+
+    /// Publish an environment event
+    pub fn publish_environment(&self, event: EnvironmentEvent) -> Result<()> {
+        let count = self.env_tx.send(event.clone())?;
+        debug!("Published environment event {} to {} receivers", event, count);
+        Ok(())
+    }
+
+    /// Publish a frame event
+    pub fn publish_frame(&self, event: FrameEvent) -> Result<()> {
+        let count = self.frame_tx.send(event)?;
+        debug!("Published frame event to {} receivers", count);
+        Ok(())
+    }
+
+    /// Publish a detection event
+    pub fn publish_detection(&self, event: DetectionEvent) -> Result<()> {
+        let count = self.detection_tx.send(event.clone())?;
+        debug!("Published detection event {} to {} receivers", event, count);
+        Ok(())
+    }
+}
+
+impl Default for EventBus {
+    fn default() -> Self {
+        Self::new()
+    }
+}

src/main.rs

@@ -2,6 +2,7 @@
 mod camera;
 mod config;
 mod detection;
+mod events;
 mod gps;
 mod hooks;
 mod overlay;
@@ -25,6 +26,8 @@ pub use config::Config;
 use meteor_detect::PLATFORM_SUPPORTS_GPIO;
 use crate::overlay::Watermark;
 
+mod app;
+
 /// Main entry point for the meteor detection system
 #[tokio::main]
 async fn main() -> Result<()> {
@@ -53,168 +56,21 @@ async fn main() -> Result<()> {
     
     info!("Loaded configuration with device ID: {}", config.device.id);
     
-    // Initialize camera subsystem
+    // Create the application 
-    let camera_controller = camera::CameraController::new(&config)
+    let mut application = app::Application::new(config);
-        .await
-        .context("Failed to initialize camera")?;
-    let camera_controller = Arc::new(Mutex::new(camera_controller));
     
-    // Initialize GPS module
+    // Initialize all components
-    let gps_controller = gps::GpsController::new(&config)
+    application.initialize().await
-        .await
+        .context("Failed to initialize application components")?;
-        .context("Failed to initialize GPS")?;
-    let gps_controller = Arc::new(Mutex::new(gps_controller));
     
-    // Initialize sensor controller
+    // Start all components and set up event handlers
-    let sensor_controller = sensors::SensorController::new(&config)
+    application.start().await
-        .await
+        .context("Failed to start application components")?;
-        .context("Failed to initialize sensors")?;
-    let sensor_controller = Arc::new(Mutex::new(sensor_controller));
     
-    // Initialize watermark overlay
+    // Run the application until shutdown
-    let watermark = {
+    application.run().await
-        let gps_status = gps_controller.lock().await.get_status();
+        .context("Application runtime error")?;
-        let env_data = sensor_controller.lock().await.get_current_data();
-        
-        overlay::watermark::Watermark::new(
-            config.watermark.clone(),
-            Arc::new(StdMutex::new(env_data)),
-            Arc::new(StdMutex::new(gps_status)),
-        )
-    };
-    let watermark = Arc::new(Mutex::new(watermark));
     
-    // Initialize frame hook manager
+    info!("Meteor detection system shutdown complete");
-    let hook_manager = hooks::HookManager::new();
-    let hook_manager = Arc::new(Mutex::new(hook_manager));
-    
-    // Initialize RTSP streaming server
-    let rtsp_server = streaming::RtspServer::new(config.rtsp.clone());
-    let rtsp_server = Arc::new(Mutex::new(rtsp_server));
-    
-    // Initialize detection pipeline
-    let detection_pipeline = detection::DetectionPipeline::new(
-        camera_controller.clone(),
-        &config.clone(),
-        config.detection.pipeline.clone()
-    ).context("Failed to initialize detection pipeline")?;
-    
-    // Initialize storage system
-    let storage_manager = storage::StorageManager::new(&(config.clone()))
-        .await
-        .context("Failed to initialize storage")?;
-    
-    // Initialize communication module
-    let mut comms = communication::CommunicationManager::new(
-        &config,
-        camera_controller.clone(),
-        gps_controller.clone(),
-    ).await.context("Failed to initialize communication")?;
-    
-    // Initialize health monitoring
-    let monitor = monitoring::SystemMonitor::new(&config)
-        .await
-        .context("Failed to initialize system monitor")?;
-    
-    // Start all subsystems
-    info!("All subsystems initialized, starting main processing loop");
-    
-    // Initialize sensors
-    sensor_controller.lock().await.initialize().await
-        .context("Failed to initialize sensors")?;
-    sensor_controller.lock().await.start().await
-        .context("Failed to start sensors")?;
-        
-    // Initialize GPS
-    gps_controller.lock().await.initialize().await
-        .context("Failed to initialize GPS")?;
-    gps_controller.lock().await.start().await
-        .context("Failed to start GPS")?;
-        
-    // Start RTSP server if enabled
-    if config.rtsp.enabled {
-        rtsp_server.lock().await.start().await
-            .context("Failed to start RTSP server")?;
-        info!("RTSP server started at {}", rtsp_server.lock().await.get_url());
-    }
-    
-    // Run the main event loop
-    let mut tasks = Vec::new();
-    
-    // Add watermark hook
-    {
-        let mut manager = hook_manager.lock().await;
-        let watermark_clone = watermark.clone();
-        manager.register_hook(Box::new(hooks::BasicFrameHook::new(
-            "watermark",
-            "Watermark Overlay",
-            "Adds timestamp, GPS, and sensor data overlay to frames",
-            config.watermark.enabled,
-            move |frame, timestamp| {
-                // Using block_in_place to properly handle async operations in sync context
-                tokio::task::block_in_place(|| {
-                    let mut guard = futures::executor::block_on(watermark_clone.lock());
-                    guard.apply(frame, timestamp)
-                })
-            },
-        )));
-    }
-    
-    // Spawn detection pipeline task
-    tasks.push(tokio::spawn(async move {
-        if let Err(e) = detection_pipeline.run().await {
-            error!("Detection pipeline error: {}", e);
-        }
-    }));
-    
-    // Spawn communication manager task
-    tasks.push(tokio::spawn(async move {
-        if let Err(e) = comms.run().await {
-            error!("Communication manager error: {}", e);
-        }
-    }));
-    
-    // Spawn system monitor task
-    tasks.push(tokio::spawn(async move {
-        if let Err(e) = monitor.run().await {
-            error!("System monitor error: {}", e);
-        }
-    }));
-    
-    // Add RTSP streaming task with proper loop to keep it alive
-    let rtsp_config_enabled = config.rtsp.enabled;
-    tasks.push(tokio::spawn(async move {
-        if rtsp_config_enabled {
-            info!("Starting RTSP streaming task");
-            
-            // Implement a proper continuous loop to keep the task alive
-            loop {
-                // This would normally feed frames to the RTSP server
-                // For now, just sleep to keep the task alive
-                tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
-                
-                // Add some actual implementation here later
-            }
-        }
-    }));
-    
-    // Wait for the Ctrl+C signal 
-    info!("Press Ctrl+C to stop the application");
-    match signal::ctrl_c().await {
-        Ok(()) => {
-            info!("Shutdown signal received, preparing to exit");
-            // Here you would add cleanup code
-        }
-        Err(err) => {
-            error!("Error waiting for Ctrl+C: {}", err);
-        }
-    }
-    
-    // Now that we've received a shutdown signal, cancel all tasks
-    for task in tasks {
-        task.abort();
-    }
-    
-    info!("Meteor detection system shutting down");
     Ok(())
 }

src/overlay/event_watermark.rs

@@ -0,0 +1,312 @@
+//! Event-based watermark implementation
+//!
+//! This module provides a version of the watermark component that uses
+//! the event bus to receive updates instead of directly accessing shared state.
+
+use anyhow::{Context, Result};
+use chrono::{DateTime, Utc};
+use log::{debug, error, info, warn};
+use opencv::{core, imgproc, prelude::*, types};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use tokio::sync::{Mutex, RwLock};
+
+use crate::events::{EventBus, GpsStatusEvent, EnvironmentEvent};
+use crate::gps::{GeoPosition, GpsStatus, CameraOrientation};
+use crate::overlay::watermark::{WatermarkOptions, WatermarkPosition, WatermarkContent};
+use crate::sensors::EnvironmentData;
+
+/// Event-based watermark for overlaying information on video frames
+pub struct EventWatermark {
+    /// Watermark configuration options
+    options: WatermarkOptions,
+    /// Current environment data (updated via events)
+    environment: Arc<RwLock<EnvironmentData>>,
+    /// Current GPS status (updated via events)
+    gps_status: Arc<RwLock<GpsStatus>>,
+}
+
+impl EventWatermark {
+    /// Create a new event-based watermark with the given options
+    pub async fn new(
+        options: WatermarkOptions,
+        event_bus: &EventBus,
+    ) -> Self {
+        // Create empty data stores
+        let environment = Arc::new(RwLock::new(EnvironmentData {
+            temperature: 0.0,
+            humidity: 0.0,
+            sky_brightness: 0.0,
+            timestamp: Utc::now(),
+        }));
+        
+        let gps_status = Arc::new(RwLock::new(GpsStatus {
+            timestamp: Utc::now(),
+            position: GeoPosition {
+                latitude: 0.0,
+                longitude: 0.0,
+                altitude: 0.0,
+            },
+            camera_orientation: CameraOrientation {
+                azimuth: 0.0,
+                elevation: 0.0,
+            },
+            sync_status: "NoSync".to_string(),
+            time_accuracy_ms: 0.0,
+            satellites: 0,
+        }));
+        
+        // Setup event subscriptions
+        Self::setup_subscriptions(event_bus, environment.clone(), gps_status.clone());
+        
+        Self {
+            options,
+            environment,
+            gps_status,
+        }
+    }
+    
+    /// Setup event subscriptions
+    fn setup_subscriptions(
+        event_bus: &EventBus,
+        environment: Arc<RwLock<EnvironmentData>>,
+        gps_status: Arc<RwLock<GpsStatus>>,
+    ) {
+        // Subscribe to environment events
+        let mut env_rx = event_bus.subscribe_environment();
+        let env_data = environment.clone();
+        tokio::spawn(async move {
+            while let Ok(event) = env_rx.recv().await {
+                let mut data = env_data.write().await;
+                data.temperature = event.temperature;
+                data.humidity = event.humidity;
+                data.sky_brightness = event.sky_brightness;
+                data.timestamp = event.timestamp;
+                debug!("Updated environment data: temp={}, humidity={}, brightness={}", 
+                      event.temperature, event.humidity, event.sky_brightness);
+            }
+        });
+        
+        // Subscribe to GPS events
+        let mut gps_rx = event_bus.subscribe_gps();
+        let gps_data = gps_status.clone();
+        tokio::spawn(async move {
+            while let Ok(event) = gps_rx.recv().await {
+                let mut status = gps_data.write().await;
+                status.timestamp = event.timestamp;
+                status.position.latitude = event.latitude;
+                status.position.longitude = event.longitude;
+                status.position.altitude = event.altitude;
+                status.camera_orientation.azimuth = event.azimuth;
+                status.camera_orientation.elevation = event.elevation;
+                status.fix_quality = event.fix_quality;
+                status.satellites = event.satellites;
+                debug!("Updated GPS status: lat={}, lon={}", 
+                      event.latitude, event.longitude);
+            }
+        });
+    }
+    
+    /// Update watermark options
+    pub fn set_options(&mut self, options: WatermarkOptions) {
+        self.options = options;
+    }
+    
+    /// Convert GPS coordinates to formatted string
+    async fn format_coordinates(&self) -> String {
+        let position = {
+            let gps = self.gps_status.read().await;
+            gps.position.clone()
+        };
+        
+        if self.options.coordinate_format == "dms" {
+            // Convert decimal degrees to degrees, minutes, seconds
+            let lat_deg = position.latitude.abs().trunc() as i32;
+            let lat_min = ((position.latitude.abs() - lat_deg as f64) * 60.0).trunc() as i32;
+            let lat_sec = ((position.latitude.abs() - lat_deg as f64 - lat_min as f64 / 60.0) * 3600.0).round() as i32;
+            let lat_dir = if position.latitude >= 0.0 { "N" } else { "S" };
+            
+            let lon_deg = position.longitude.abs().trunc() as i32;
+            let lon_min = ((position.longitude.abs() - lon_deg as f64) * 60.0).trunc() as i32;
+            let lon_sec = ((position.longitude.abs() - lon_deg as f64 - lon_min as f64 / 60.0) * 3600.0).round() as i32;
+            let lon_dir = if position.longitude >= 0.0 { "E" } else { "W" };
+            
+            format!(
+                "{}°{:02}'{:02}\"{}  {}°{:02}'{:02}\"{}  Alt: {:.1}m",
+                lat_deg, lat_min, lat_sec, lat_dir,
+                lon_deg, lon_min, lon_sec, lon_dir,
+                position.altitude
+            )
+        } else {
+            // Decimal degrees format
+            format!(
+                "Lat: {:.6}°  Lon: {:.6}°  Alt: {:.1}m",
+                position.latitude, position.longitude, position.altitude
+            )
+        }
+    }
+    
+    /// Convert temperature to formatted string based on options
+    async fn format_temperature(&self) -> String {
+        let temp_c = {
+            let env = self.environment.read().await;
+            env.temperature
+        };
+        
+        if self.options.temperature_format == "F" {
+            // Convert to Fahrenheit
+            let temp_f = temp_c * 9.0 / 5.0 + 32.0;
+            format!("{:.1}°F", temp_f)
+        } else {
+            // Default to Celsius
+            format!("{:.1}°C", temp_c)
+        }
+    }
+    
+    /// Apply watermark to the given frame
+    pub async fn apply(&self, frame: &mut core::Mat, timestamp: DateTime<Utc>) -> Result<()> {
+        if !self.options.enabled {
+            return Ok(());
+        }
+        
+        // Build the text lines to display
+        let mut lines = Vec::new();
+        
+        for content in &self.options.content {
+            match content {
+                WatermarkContent::Timestamp => {
+                    lines.push(timestamp.format(&self.options.time_format).to_string());
+                },
+                WatermarkContent::GpsCoordinates => {
+                    lines.push(self.format_coordinates().await);
+                },
+                WatermarkContent::Environment => {
+                    let humidity = {
+                        let env = self.environment.read().await;
+                        env.humidity
+                    };
+                    
+                    lines.push(format!(
+                        "Temp: {}  Humidity: {:.1}%",
+                        self.format_temperature().await,
+                        humidity
+                    ));
+                },
+                WatermarkContent::CameraOrientation => {
+                    let orientation = {
+                        let gps = self.gps_status.read().await;
+                        gps.camera_orientation.clone()
+                    };
+                    
+                    lines.push(format!(
+                        "Az: {:.1}°  El: {:.1}°",
+                        orientation.azimuth,
+                        orientation.elevation
+                    ));
+                },
+                WatermarkContent::Custom(text) => {
+                    lines.push(text.clone());
+                },
+            }
+        }
+        
+        // Skip if no content
+        if lines.is_empty() {
+            return Ok(());
+        }
+        
+        // Get frame dimensions
+        let width = frame.cols();
+        let height = frame.rows();
+        
+        // Calculate text size and position
+        let font = imgproc::FONT_HERSHEY_SIMPLEX;
+        let font_scale = self.options.font_scale;
+        let thickness = self.options.thickness;
+        let padding = self.options.padding;
+        
+        // Calculate total height of all lines
+        let mut line_heights = Vec::with_capacity(lines.len());
+        let mut max_width = 0;
+        
+        for line in &lines {
+            let size = imgproc::get_text_size(line, font, font_scale, thickness, &mut 0)?;
+            line_heights.push(size.height);
+            max_width = max_width.max(size.width);
+        }
+        
+        let total_height: i32 = line_heights.iter().sum();
+        let line_spacing = 4;  // Space between lines
+        let total_space_height = line_spacing * (lines.len() as i32 - 1);
+        let text_block_height = total_height + total_space_height + padding * 2;
+        let text_block_width = max_width + padding * 2;
+        
+        // Calculate watermark position
+        let (x, y) = match self.options.position {
+            WatermarkPosition::TopLeft => (padding, padding),
+            WatermarkPosition::TopRight => (width - text_block_width - padding, padding),
+            WatermarkPosition::BottomLeft => (padding, height - text_block_height - padding),
+            WatermarkPosition::BottomRight => (
+                width - text_block_width - padding,
+                height - text_block_height - padding
+            ),
+            WatermarkPosition::Custom(x, y) => (x as i32, y as i32),
+        };
+        
+        // Draw background rectangle if enabled
+        if self.options.background {
+            let bg_color = core::Scalar::new(
+                self.options.background_color.0 as f64,
+                self.options.background_color.1 as f64,
+                self.options.background_color.2 as f64,
+                self.options.background_color.3 as f64,
+            );
+            
+            let rect = core::Rect::new(
+                x, 
+                y, 
+                text_block_width, 
+                text_block_height
+            );
+            
+            imgproc::rectangle(
+                frame,
+                rect,
+                bg_color,
+                -1, // Fill
+                imgproc::LINE_8,
+                0,
+            )?;
+        }
+        
+        // Draw text lines
+        let text_color = core::Scalar::new(
+            self.options.color.0 as f64,
+            self.options.color.1 as f64,
+            self.options.color.2 as f64,
+            self.options.color.3 as f64,
+        );
+        
+        let mut current_y = y + padding + line_heights[0];
+        
+        for (i, line) in lines.iter().enumerate() {
+            imgproc::put_text(
+                frame,
+                line,
+                core::Point::new(x + padding, current_y),
+                font,
+                font_scale,
+                text_color,
+                thickness,
+                imgproc::LINE_AA,
+                false,
+            )?;
+            
+            if i < lines.len() - 1 {
+                current_y += line_heights[i] + line_spacing;
+            }
+        }
+        
+        Ok(())
+    }
+}