quantrs2-device 0.1.3

//! Main provider capability discovery system implementation.
//!
//! This module contains the `ProviderCapabilityDiscoverySystem` struct
//! and related implementations.

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

use scirs2_core::ndarray::Array2;
use tokio::sync::{broadcast, mpsc};

use crate::DeviceResult;

use super::capabilities::*;
use super::config::*;
use super::engines::*;
use super::events::*;
use super::types::*;

/// Comprehensive provider capability discovery and management system
pub struct ProviderCapabilityDiscoverySystem {
    /// System configuration
    pub(crate) config: DiscoveryConfig,
    /// Registered providers
    pub(crate) providers: Arc<RwLock<HashMap<String, ProviderInfo>>>,
    /// Capability cache
    pub(crate) capability_cache: Arc<RwLock<HashMap<String, CachedCapability>>>,
    /// Discovery engine
    pub(crate) discovery_engine: Arc<RwLock<CapabilityDiscoveryEngine>>,
    /// Analytics engine
    pub(crate) analytics: Arc<RwLock<CapabilityAnalytics>>,
    /// Comparison engine
    pub(crate) comparison_engine: Arc<RwLock<ProviderComparisonEngine>>,
    /// Monitoring system
    pub(crate) monitor: Arc<RwLock<CapabilityMonitor>>,
    /// Event broadcaster
    pub(crate) event_sender: broadcast::Sender<DiscoveryEvent>,
    /// Command receiver
    #[allow(dead_code)]
    pub(crate) command_receiver: Arc<Mutex<mpsc::UnboundedReceiver<DiscoveryCommand>>>,
}

impl ProviderCapabilityDiscoverySystem {
    /// Create a new provider capability discovery system
    pub fn new(config: DiscoveryConfig) -> Self {
        let (event_sender, _) = broadcast::channel(1000);
        let (_command_sender, command_receiver) = mpsc::unbounded_channel();

        Self {
            config: config.clone(),
            providers: Arc::new(RwLock::new(HashMap::new())),
            capability_cache: Arc::new(RwLock::new(HashMap::new())),
            discovery_engine: Arc::new(RwLock::new(CapabilityDiscoveryEngine::new())),
            analytics: Arc::new(RwLock::new(CapabilityAnalytics::new(
                config.analytics_config.clone(),
            ))),
            comparison_engine: Arc::new(RwLock::new(ProviderComparisonEngine::new(
                config.comparison_config.clone(),
            ))),
            monitor: Arc::new(RwLock::new(CapabilityMonitor::new(
                config.monitoring_config,
            ))),
            event_sender,
            command_receiver: Arc::new(Mutex::new(command_receiver)),
        }
    }

    /// Start the discovery system
    pub async fn start(&self) -> DeviceResult<()> {
        if self.config.enable_auto_discovery {
            self.start_auto_discovery().await?;
        }

        if self.config.enable_monitoring {
            self.start_monitoring().await?;
        }

        if self.config.enable_analytics {
            self.start_analytics().await?;
        }

        Ok(())
    }

    /// Discover available providers
    pub async fn discover_providers(&self) -> DeviceResult<Vec<ProviderInfo>> {
        let discovery_engine = self
            .discovery_engine
            .read()
            .unwrap_or_else(|e| e.into_inner());
        discovery_engine.discover_providers().await
    }

    /// Get provider capabilities
    pub async fn get_provider_capabilities(
        &self,
        provider_id: &str,
    ) -> DeviceResult<Option<ProviderCapabilities>> {
        // Check cache first
        {
            let cache = self
                .capability_cache
                .read()
                .unwrap_or_else(|e| e.into_inner());
            if let Some(cached) = cache.get(provider_id) {
                if cached.expires_at > SystemTime::now() {
                    return Ok(Some(cached.capabilities.clone()));
                }
            }
        }

        // Discover and cache capabilities
        let capabilities = self.discover_provider_capabilities(provider_id).await?;
        if let Some(caps) = &capabilities {
            self.cache_capabilities(provider_id, caps.clone()).await?;
        }

        Ok(capabilities)
    }

    /// Compare providers
    pub async fn compare_providers(
        &self,
        provider_ids: &[String],
        criteria: &[ComparisonCriterion],
    ) -> DeviceResult<ComparisonResults> {
        let comparison_engine = self
            .comparison_engine
            .read()
            .unwrap_or_else(|e| e.into_inner());
        comparison_engine
            .compare_providers(provider_ids, criteria)
            .await
    }

    /// Get provider recommendations
    pub async fn get_recommendations(
        &self,
        requirements: &CapabilityRequirements,
    ) -> DeviceResult<Vec<ProviderRecommendation>> {
        let providers = self.discover_providers().await?;
        let filtered_providers = self.filter_providers(&providers, requirements)?;
        let recommendations = self
            .generate_recommendations(&filtered_providers, requirements)
            .await?;
        Ok(recommendations)
    }

    // Private implementation methods

    async fn start_auto_discovery(&self) -> DeviceResult<()> {
        // Implementation would start background discovery task
        Ok(())
    }

    async fn start_monitoring(&self) -> DeviceResult<()> {
        // Implementation would start background monitoring task
        Ok(())
    }

    async fn start_analytics(&self) -> DeviceResult<()> {
        // Implementation would start background analytics task
        Ok(())
    }

    async fn discover_provider_capabilities(
        &self,
        _provider_id: &str,
    ) -> DeviceResult<Option<ProviderCapabilities>> {
        // Implementation would discover actual capabilities
        // For now, return a mock capability
        Ok(Some(create_mock_capabilities()))
    }

    async fn cache_capabilities(
        &self,
        provider_id: &str,
        capabilities: ProviderCapabilities,
    ) -> DeviceResult<()> {
        let mut cache = self
            .capability_cache
            .write()
            .unwrap_or_else(|e| e.into_inner());
        let cached_capability = CachedCapability {
            provider_id: provider_id.to_string(),
            capabilities,
            cached_at: SystemTime::now(),
            expires_at: SystemTime::now() + self.config.cache_expiration,
            verification_status: VerificationStatus::Unverified,
            access_count: 0,
        };
        cache.insert(provider_id.to_string(), cached_capability);
        Ok(())
    }

    fn filter_providers(
        &self,
        providers: &[ProviderInfo],
        _requirements: &CapabilityRequirements,
    ) -> DeviceResult<Vec<ProviderInfo>> {
        // Implementation would filter providers based on requirements
        Ok(providers.to_vec())
    }

    async fn generate_recommendations(
        &self,
        _providers: &[ProviderInfo],
        _requirements: &CapabilityRequirements,
    ) -> DeviceResult<Vec<ProviderRecommendation>> {
        // Implementation would generate intelligent recommendations
        Ok(Vec::new())
    }
}

/// Create mock capabilities for testing
fn create_mock_capabilities() -> ProviderCapabilities {
    ProviderCapabilities {
        basic: BasicCapabilities {
            qubit_count: 5,
            gate_set: ["H", "CNOT", "RZ"].iter().map(|s| s.to_string()).collect(),
            connectivity: ConnectivityGraph {
                adjacency_list: HashMap::new(),
                edge_weights: None,
                topology_type: TopologyType::Linear,
                metrics: ConnectivityMetrics {
                    average_degree: 2.0,
                    clustering_coefficient: 0.0,
                    diameter: 4,
                    density: 0.4,
                    connected_components: 1,
                },
            },
            measurement_types: vec![MeasurementType::ComputationalBasis],
            classical_register_size: 5,
            max_circuit_depth: Some(1000),
            max_shots: Some(8192),
        },
        hardware: HardwareCapabilities {
            quantum_volume: Some(32),
            error_rates: ErrorRates {
                single_qubit_gates: HashMap::new(),
                two_qubit_gates: HashMap::new(),
                readout_errors: HashMap::new(),
                average_error_rate: 0.01,
                error_rate_variance: 0.001,
            },
            coherence_times: CoherenceTimes {
                t1_times: HashMap::new(),
                t2_times: HashMap::new(),
                average_t1: Duration::from_micros(100),
                average_t2: Duration::from_micros(50),
            },
            gate_times: HashMap::new(),
            crosstalk: CrosstalkCharacteristics {
                crosstalk_matrix: Array2::zeros((5, 5)),
                spectral_crosstalk: HashMap::new(),
                temporal_crosstalk: HashMap::new(),
                mitigation_strategies: Vec::new(),
            },
            calibration: CalibrationInfo {
                last_calibration: SystemTime::now(),
                calibration_frequency: Duration::from_secs(86400),
                quality_score: 0.95,
                drift_rate: 0.01,
                calibration_method: "standard".to_string(),
            },
            temperature: Some(0.01),
            noise_characteristics: NoiseCharacteristics {
                noise_model_type: "depolarizing".to_string(),
                noise_parameters: HashMap::new(),
                noise_correlations: Array2::zeros((5, 5)),
                environmental_factors: HashMap::new(),
            },
        },
        software: SoftwareCapabilities {
            supported_frameworks: vec![QuantumFramework::Qiskit],
            programming_languages: vec!["Python".to_string()],
            compilation_features: CompilationFeatures {
                circuit_optimization: true,
                gate_synthesis: true,
                routing_algorithms: vec!["basic".to_string()],
                transpilation_passes: vec!["optimization".to_string()],
                custom_compilation: false,
            },
            optimization_features: OptimizationFeatures {
                parameter_optimization: true,
                depth_optimization: true,
                gate_count_optimization: true,
                noise_aware_optimization: false,
                variational_algorithms: vec!["VQE".to_string()],
            },
            simulation_capabilities: SimulationCapabilities {
                classical_simulation: true,
                noise_simulation: true,
                error_simulation: false,
                max_simulated_qubits: Some(20),
                simulation_backends: vec!["statevector".to_string()],
            },
            integration_capabilities: IntegrationCapabilities {
                rest_api: true,
                graphql_api: false,
                websocket_support: false,
                sdk_languages: vec!["Python".to_string()],
                third_party_integrations: Vec::new(),
            },
        },
        performance: PerformanceCapabilities {
            throughput: ThroughputMetrics {
                circuits_per_hour: 100.0,
                shots_per_second: 1000.0,
                jobs_per_day: 2000.0,
                peak_throughput: 150.0,
                sustained_throughput: 80.0,
            },
            latency: LatencyMetrics {
                submission_latency: Duration::from_millis(100),
                queue_wait_time: Duration::from_secs(60),
                execution_time: Duration::from_millis(500),
                result_retrieval_time: Duration::from_millis(50),
                total_turnaround_time: Duration::from_secs(61),
            },
            availability: AvailabilityMetrics {
                uptime_percentage: 99.5,
                mtbf: Duration::from_secs(30 * 86400),
                mttr: Duration::from_secs(3600),
                maintenance_windows: Vec::new(),
                sla: None,
            },
            scalability: ScalabilityCharacteristics {
                horizontal_scalability: false,
                vertical_scalability: true,
                auto_scaling: false,
                max_concurrent_jobs: Some(10),
                load_balancing: false,
            },
            resource_utilization: ResourceUtilizationMetrics {
                cpu_utilization: 0.7,
                memory_utilization: 0.6,
                network_utilization: 0.3,
                storage_utilization: 0.4,
                quantum_utilization: 0.8,
            },
        },
        cost: CostCapabilities {
            cost_model: CostModel {
                pricing_structure: PricingStructure::Variable,
                cost_factors: Vec::new(),
                volume_discounts: Vec::new(),
                regional_pricing: HashMap::new(),
                supported_currencies: vec!["USD".to_string()],
            },
            cost_optimization: CostOptimizationFeatures {
                cost_estimation: true,
                cost_tracking: true,
                budget_alerts: false,
                optimization_recommendations: false,
                spot_pricing: false,
            },
            budget_management: BudgetManagementFeatures {
                budget_setting: false,
                budget_monitoring: false,
                spending_limits: false,
                cost_allocation: false,
                invoice_management: false,
            },
            cost_transparency: CostTransparencyFeatures {
                realtime_cost_display: false,
                detailed_breakdown: false,
                historical_analysis: false,
                comparison_tools: false,
                cost_reporting: false,
            },
        },
        security: SecurityCapabilities {
            authentication: vec![AuthenticationMethod::APIKey],
            authorization: vec![AuthorizationModel::RBAC],
            encryption: EncryptionCapabilities {
                data_at_rest: true,
                data_in_transit: true,
                end_to_end: false,
                algorithms: vec!["AES-256".to_string()],
                key_management: KeyManagementCapabilities {
                    customer_managed_keys: false,
                    hsm_support: false,
                    key_rotation: true,
                    key_escrow: false,
                    mpc_support: false,
                },
            },
            compliance: vec![ComplianceStandard::SOC2],
            security_monitoring: SecurityMonitoringCapabilities {
                audit_logging: true,
                intrusion_detection: false,
                anomaly_detection: false,
                security_alerts: false,
                threat_intelligence: false,
            },
        },
        support: SupportCapabilities {
            support_channels: vec![SupportChannel::Email, SupportChannel::Documentation],
            support_hours: SupportHours {
                business_hours: true,
                twenty_four_seven: false,
                weekend_support: false,
                holiday_support: false,
                timezone_coverage: vec!["UTC".to_string()],
            },
            response_times: ResponseTimeGuarantees {
                critical_response_time: Duration::from_secs(3600),
                high_priority_response_time: Duration::from_secs(7200),
                medium_priority_response_time: Duration::from_secs(86400),
                low_priority_response_time: Duration::from_secs(3 * 86400),
                first_response_time: Duration::from_secs(1800),
            },
            documentation_quality: DocumentationQuality {
                completeness_score: 0.8,
                accuracy_score: 0.9,
                clarity_score: 0.85,
                up_to_date_score: 0.9,
                example_quality: 0.8,
            },
            training_education: TrainingEducationCapabilities {
                online_courses: false,
                workshops: false,
                certification_programs: false,
                consulting_services: false,
                community_forums: true,
            },
        },
        advanced_features: AdvancedFeatures {
            ml_integration: MLIntegrationFeatures {
                quantum_ml: false,
                classical_ml_integration: false,
                automl_support: false,
                ml_frameworks: Vec::new(),
                gpu_acceleration: false,
            },
            hybrid_computing: HybridComputingFeatures {
                classical_quantum_integration: false,
                realtime_feedback: false,
                iterative_algorithms: false,
                hpc_integration: false,
                edge_computing: false,
            },
            quantum_networking: QuantumNetworkingFeatures {
                quantum_internet: false,
                qkd_support: false,
                distributed_computing: false,
                quantum_teleportation: false,
                network_protocols: Vec::new(),
            },
            research_capabilities: ResearchCapabilities {
                research_partnerships: false,
                academic_pricing: true,
                research_tools: false,
                data_sharing: false,
                publication_support: false,
            },
            experimental_features: Vec::new(),
        },
    }
}

/// Create a default provider capability discovery system
pub fn create_provider_discovery_system() -> ProviderCapabilityDiscoverySystem {
    ProviderCapabilityDiscoverySystem::new(DiscoveryConfig::default())
}

/// Create a high-performance discovery configuration
pub fn create_high_performance_discovery_config() -> DiscoveryConfig {
    DiscoveryConfig {
        enable_auto_discovery: true,
        discovery_interval: 1800, // 30 minutes
        enable_caching: true,
        cache_expiration: Duration::from_secs(43200), // 12 hours
        enable_monitoring: true,
        enable_analytics: true,
        discovery_strategies: vec![
            DiscoveryStrategy::APIDiscovery,
            DiscoveryStrategy::RegistryDiscovery,
            DiscoveryStrategy::NetworkDiscovery,
            DiscoveryStrategy::MLEnhancedDiscovery,
        ],
        verification_config: VerificationConfig {
            enable_verification: true,
            verification_timeout: Duration::from_secs(120),
            verification_strategies: vec![
                VerificationStrategy::EndpointTesting,
                VerificationStrategy::CapabilityProbing,
                VerificationStrategy::BenchmarkTesting,
                VerificationStrategy::HistoricalAnalysis,
            ],
            min_verification_confidence: 0.9,
            enable_continuous_verification: true,
            verification_frequency: Duration::from_secs(43200),
        },
        filtering_config: FilteringConfig {
            enable_filtering: true,
            min_requirements: CapabilityRequirements {
                min_qubits: Some(5),
                max_error_rate: Some(0.05),
                required_gates: ["H", "CNOT", "RZ", "RY", "RX"]
                    .iter()
                    .map(|s| s.to_string())
                    .collect(),
                required_connectivity: Some(ConnectivityRequirement::MinimumDegree(2)),
                required_features: [
                    ProviderFeature::QuantumComputing,
                    ProviderFeature::NoiseModeling,
                ]
                .iter()
                .cloned()
                .collect(),
                performance_requirements: PerformanceRequirements {
                    max_execution_time: Some(Duration::from_secs(300)),
                    min_throughput: Some(50.0),
                    max_queue_time: Some(Duration::from_secs(1800)),
                    min_availability: Some(0.95),
                    max_cost_per_shot: Some(0.1),
                },
            },
            excluded_providers: HashSet::new(),
            preferred_providers: Vec::new(),
            quality_thresholds: QualityThresholds {
                min_fidelity: 0.9,
                max_error_rate: 0.05,
                min_uptime: 0.98,
                min_reliability: 0.95,
                min_performance: 0.8,
            },
            geographic_restrictions: None,
        },
        analytics_config: CapabilityAnalyticsConfig {
            enable_trend_analysis: true,
            enable_predictive_analytics: true,
            enable_comparative_analysis: true,
            analysis_depth: AnalysisDepth::Comprehensive,
            retention_period: Duration::from_secs(90 * 86400), // 90 days
            confidence_level: 0.99,
        },
        monitoring_config: CapabilityMonitoringConfig {
            enable_realtime_monitoring: true,
            monitoring_frequency: Duration::from_secs(60), // 1 minute
            health_check_interval: Duration::from_secs(300), // 5 minutes
            alert_thresholds: [
                ("availability".to_string(), 0.95),
                ("error_rate".to_string(), 0.05),
                ("response_time".to_string(), 5000.0),
            ]
            .iter()
            .cloned()
            .collect(),
            enable_anomaly_detection: true,
            anomaly_sensitivity: 0.9,
        },
        comparison_config: ComparisonConfig {
            enable_auto_comparison: true,
            comparison_criteria: vec![
                ComparisonCriterion::Performance,
                ComparisonCriterion::Cost,
                ComparisonCriterion::Reliability,
                ComparisonCriterion::Availability,
                ComparisonCriterion::Features,
                ComparisonCriterion::Security,
            ],
            ranking_algorithms: vec![
                RankingAlgorithm::WeightedSum,
                RankingAlgorithm::TOPSIS,
                RankingAlgorithm::MachineLearning,
            ],
            criterion_weights: [
                ("performance".to_string(), 0.3),
                ("cost".to_string(), 0.2),
                ("reliability".to_string(), 0.2),
                ("availability".to_string(), 0.15),
                ("features".to_string(), 0.1),
                ("security".to_string(), 0.05),
            ]
            .iter()
            .cloned()
            .collect(),
            enable_multidimensional_analysis: true,
        },
    }
}