oxirs-stream 0.2.4

//! Quantum processing module - modular quantum computing integration for RDF streams
//!
//! This module provides a refactored, maintainable structure for quantum-enhanced
//! stream processing with separate concerns for different quantum components.

pub mod classical_processor;
pub mod entanglement_manager;
pub mod error_correction;
pub mod performance_monitor;
pub mod quantum_circuit;
pub mod quantum_config;
pub mod quantum_ml_engine;
pub mod quantum_optimizer;
pub mod variational_processor;

use anyhow::Result;
use std::collections::HashMap;
use tokio::sync::RwLock;

use crate::error::StreamResult;
use crate::event::StreamEvent;

pub use classical_processor::*;
pub use entanglement_manager::*;
pub use error_correction::*;
pub use performance_monitor::*;
pub use quantum_circuit::*;
pub use quantum_config::{ErrorCorrectionCode, QuantumConfig, QuantumGate as ConfigQuantumGate};
pub use quantum_ml_engine::{
    QuantumGate as MLQuantumGate, QuantumMLEngine, QuantumModel, QuantumTrainingStats,
};
pub use quantum_optimizer::*;
pub use variational_processor::*;

/// Quantum stream processor with hybrid quantum-classical architecture
pub struct QuantumStreamProcessor {
    quantum_config: QuantumConfig,
    quantum_circuits: RwLock<HashMap<String, QuantumCircuit>>,
    classical_processor: ClassicalProcessor,
    quantum_optimizer: QuantumOptimizer,
    variational_processor: VariationalProcessor,
    quantum_ml_engine: QuantumMLEngine,
    entanglement_manager: EntanglementManager,
    error_correction: QuantumErrorCorrection,
    performance_monitor: QuantumPerformanceMonitor,
}

impl QuantumStreamProcessor {
    /// Create a new quantum stream processor
    pub fn new(config: QuantumConfig) -> Self {
        Self {
            quantum_config: config.clone(),
            quantum_circuits: RwLock::new(HashMap::new()),
            classical_processor: ClassicalProcessor::new(),
            quantum_optimizer: QuantumOptimizer::new(config.clone()),
            variational_processor: VariationalProcessor::new(config.clone()),
            quantum_ml_engine: QuantumMLEngine::new(config.clone()),
            entanglement_manager: EntanglementManager::new(config.clone()),
            error_correction: QuantumErrorCorrection::new(config.clone()),
            performance_monitor: QuantumPerformanceMonitor::new(config),
        }
    }

    /// Process a stream event using quantum algorithms
    pub async fn process_event(&self, event: StreamEvent) -> StreamResult<StreamEvent> {
        // Start performance monitoring
        let _monitor = self
            .performance_monitor
            .start_operation("process_event")
            .await;

        // Classical preprocessing
        let preprocessed = self.classical_processor.preprocess_event(&event).await?;

        // Quantum processing
        let quantum_result = self.quantum_process(&preprocessed).await?;

        // Classical postprocessing
        let result = self
            .classical_processor
            .postprocess_result(quantum_result, preprocessed)
            .await?;

        Ok(result)
    }

    /// Internal quantum processing logic
    async fn quantum_process(&self, _event: &StreamEvent) -> Result<QuantumProcessingResult> {
        // This would contain the main quantum processing logic
        // For now, return a placeholder
        Ok(QuantumProcessingResult::default())
    }

    /// Get quantum processing statistics
    pub async fn get_statistics(&self) -> QuantumProcessingStatistics {
        self.performance_monitor.get_statistics().await
    }
}

/// Quantum processing result (internal)
#[derive(Debug, Default)]
pub struct QuantumProcessingResult {
    pub quantum_state: Vec<f64>,
    pub measurement_results: Vec<u8>,
    pub success_probability: f64,
}

/// Quantum processing statistics
#[derive(Debug, Default)]
pub struct QuantumProcessingStatistics {
    pub total_operations: u64,
    pub success_rate: f64,
    pub average_execution_time_us: f64,
    pub quantum_volume_achieved: u64,
}