quantrs2-tytan 0.1.3

//! Manager implementation for Real-time Quantum Computing Integration
//!
//! This module provides the main RealtimeQuantumManager implementation.

use std::collections::HashMap;
use std::sync::{Arc, Mutex, RwLock};
use std::thread;
use std::time::Duration;

use super::analytics::{PerformanceAnalytics, RealtimeMetrics};
use super::config::RealtimeConfig;
use super::fault::FaultDetectionSystem;
use super::hardware::{DeviceInfo, HardwareMonitor};
use super::queue::{QueueManager, QueuedJob, ResourceRequirements};
use super::resource::ResourceAllocator;
use super::state::SystemState;

/// Real-time quantum system manager
pub struct RealtimeQuantumManager {
    /// Hardware monitors
    pub(crate) hardware_monitors: HashMap<String, Arc<Mutex<HardwareMonitor>>>,
    /// Resource allocator
    pub(crate) resource_allocator: Arc<RwLock<ResourceAllocator>>,
    /// Queue manager
    pub(crate) queue_manager: Arc<Mutex<QueueManager>>,
    /// Performance analytics engine
    pub(crate) performance_analytics: Arc<RwLock<PerformanceAnalytics>>,
    /// Fault detection system
    pub(crate) fault_detector: Arc<Mutex<FaultDetectionSystem>>,
    /// Configuration
    pub(crate) config: RealtimeConfig,
    /// System state
    pub(crate) system_state: Arc<RwLock<SystemState>>,
}

impl RealtimeQuantumManager {
    /// Create new real-time quantum manager
    pub fn new(config: RealtimeConfig) -> Self {
        Self {
            hardware_monitors: HashMap::new(),
            resource_allocator: Arc::new(RwLock::new(ResourceAllocator::new(&config))),
            queue_manager: Arc::new(Mutex::new(QueueManager::new(&config))),
            performance_analytics: Arc::new(RwLock::new(PerformanceAnalytics::new(&config))),
            fault_detector: Arc::new(Mutex::new(FaultDetectionSystem::new())),
            config,
            system_state: Arc::new(RwLock::new(SystemState::new())),
        }
    }

    /// Start real-time monitoring
    pub fn start_monitoring(&mut self) -> Result<(), String> {
        // Start monitoring threads for each registered device
        for (device_id, monitor) in &self.hardware_monitors {
            self.start_device_monitoring(device_id.clone(), monitor.clone())?;
        }

        // Start analytics thread
        self.start_analytics_monitoring()?;

        // Start fault detection thread
        self.start_fault_detection()?;

        Ok(())
    }

    /// Register a new quantum device for monitoring
    pub fn register_device(&mut self, device_info: DeviceInfo) -> Result<(), String> {
        let monitor = Arc::new(Mutex::new(HardwareMonitor::new(device_info.clone())));
        self.hardware_monitors
            .insert(device_info.device_id, monitor);
        Ok(())
    }

    /// Submit a job to the queue
    pub fn submit_job(&self, job: QueuedJob) -> Result<String, String> {
        let mut queue_manager = self.queue_manager.lock().map_err(|e| e.to_string())?;
        queue_manager.submit_job(job)
    }

    /// Get current system state
    pub fn get_system_state(&self) -> Result<SystemState, String> {
        let state = self.system_state.read().map_err(|e| e.to_string())?;
        Ok(state.clone())
    }

    /// Get real-time metrics
    pub fn get_realtime_metrics(&self) -> Result<RealtimeMetrics, String> {
        let analytics = self
            .performance_analytics
            .read()
            .map_err(|e| e.to_string())?;
        analytics.get_current_metrics()
    }

    /// Allocate resources for a job
    pub fn allocate_resources(
        &self,
        job_id: &str,
        requirements: ResourceRequirements,
    ) -> Result<Vec<String>, String> {
        let mut allocator = self.resource_allocator.write().map_err(|e| e.to_string())?;
        allocator.allocate_resources(job_id, requirements)
    }

    /// Start device monitoring in a separate thread
    fn start_device_monitoring(
        &self,
        device_id: String,
        monitor: Arc<Mutex<HardwareMonitor>>,
    ) -> Result<(), String> {
        let interval = self.config.monitoring_interval;
        let system_state = self.system_state.clone();

        thread::spawn(move || {
            loop {
                if let Ok(mut monitor_guard) = monitor.lock() {
                    if let Err(e) = monitor_guard.update_metrics() {
                        eprintln!("Error updating metrics for device {device_id}: {e}");
                    }

                    // Update system state
                    if let Ok(mut state) = system_state.write() {
                        state.update_component_state(
                            &device_id,
                            &monitor_guard.get_current_status(),
                        );
                    }
                }

                thread::sleep(interval);
            }
        });

        Ok(())
    }

    /// Start analytics monitoring thread
    fn start_analytics_monitoring(&self) -> Result<(), String> {
        let analytics = self.performance_analytics.clone();
        let interval = self.config.analytics_config.aggregation_interval;

        thread::spawn(move || loop {
            if let Ok(mut analytics_guard) = analytics.write() {
                if let Err(e) = analytics_guard.update_analytics() {
                    eprintln!("Error updating analytics: {e}");
                }
            }

            thread::sleep(interval);
        });

        Ok(())
    }

    /// Start fault detection thread
    fn start_fault_detection(&self) -> Result<(), String> {
        let fault_detector = self.fault_detector.clone();
        let system_state = self.system_state.clone();
        let config = self.config.clone();

        thread::spawn(move || {
            loop {
                if let Ok(mut detector) = fault_detector.lock() {
                    if let Ok(state) = system_state.read() {
                        if let Err(e) = detector.check_for_faults(&state, &config) {
                            eprintln!("Error in fault detection: {e}");
                        }
                    }
                }

                thread::sleep(Duration::from_secs(1)); // Check every second
            }
        });

        Ok(())
    }
}