use std::collections::{HashMap, HashSet, VecDeque};
use std::time::{Duration, SystemTime};
use serde::{Serialize, Deserialize};
use crate::trait_explorer::TraitContext;

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatModelingEngine {
    stride_analyzer: StrideAnalyzer,
    attack_tree_generator: AttackTreeGenerator,
    threat_scenarios: Vec<ThreatScenario>,
    threat_intelligence: ThreatIntelligenceManager,
    attack_vectors: Vec<AttackVector>,
    threat_landscape: ThreatLandscapeAssessment,
    modeling_config: ThreatModelingConfig,
    threat_cache: HashMap<String, CachedThreatModel>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct StrideAnalyzer {
    spoofing_detectors: Vec<SpoofingDetector>,
    tampering_detectors: Vec<TamperingDetector>,
    repudiation_detectors: Vec<RepudiationDetector>,
    information_disclosure_detectors: Vec<InformationDisclosureDetector>,
    denial_of_service_detectors: Vec<DenialOfServiceDetector>,
    elevation_of_privilege_detectors: Vec<ElevationOfPrivilegeDetector>,
    stride_weights: HashMap<StrideCategory, f64>,
    contextual_analyzers: HashMap<String, ContextualStrideAnalyzer>,
}

#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
pub enum StrideCategory {
    Spoofing,
    Tampering,
    Repudiation,
    InformationDisclosure,
    DenialOfService,
    ElevationOfPrivilege,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackTreeGenerator {
    attack_patterns: HashMap<String, AttackPattern>,
    tree_templates: Vec<AttackTreeTemplate>,
    node_generators: HashMap<String, AttackNodeGenerator>,
    tree_optimization: AttackTreeOptimization,
    probability_calculators: Vec<ProbabilityCalculator>,
    cost_benefit_analyzers: Vec<CostBenefitAnalyzer>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatScenario {
    pub scenario_id: String,
    pub name: String,
    pub description: String,
    pub attack_vectors: Vec<String>,
    pub threat_actors: Vec<ThreatActor>,
    pub assets_at_risk: Vec<String>,
    pub impact_assessment: ImpactAssessment,
    pub likelihood: f64,
    pub detection_methods: Vec<DetectionMethod>,
    pub mitigation_strategies: Vec<MitigationStrategy>,
    pub timeline: ThreatTimeline,
    pub scenario_variants: Vec<ScenarioVariant>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatIntelligenceManager {
    intelligence_sources: Vec<ThreatIntelligenceSource>,
    threat_feeds: HashMap<String, ThreatFeed>,
    indicators_of_compromise: Vec<IndicatorOfCompromise>,
    attack_campaigns: Vec<AttackCampaign>,
    threat_actor_profiles: HashMap<String, ThreatActorProfile>,
    intelligence_correlation: IntelligenceCorrelation,
    feed_aggregator: FeedAggregator,
    intelligence_scoring: IntelligenceScoring,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackVector {
    pub vector_id: String,
    pub name: String,
    pub description: String,
    pub attack_surface: AttackSurface,
    pub entry_points: Vec<EntryPoint>,
    pub prerequisites: Vec<String>,
    pub attack_steps: Vec<AttackStep>,
    pub success_probability: f64,
    pub detection_difficulty: f64,
    pub impact_potential: f64,
    pub mitigation_complexity: f64,
    pub vector_variants: Vec<VectorVariant>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatLandscapeAssessment {
    threat_environment: ThreatEnvironment,
    emerging_threats: Vec<EmergingThreat>,
    threat_trends: Vec<ThreatTrend>,
    geographic_factors: HashMap<String, GeographicThreatFactor>,
    industry_specific_threats: HashMap<String, Vec<IndustryThreat>>,
    technology_threats: HashMap<String, Vec<TechnologyThreat>>,
    threat_evolution_models: Vec<ThreatEvolutionModel>,
    landscape_metrics: LandscapeMetrics,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SpoofingDetector {
    pub name: String,
    pub detection_patterns: Vec<String>,
    pub trait_specific_checks: HashMap<String, Vec<String>>,
    pub identity_verification_requirements: Vec<String>,
    pub authentication_bypass_patterns: Vec<String>,
    pub spoofing_indicators: Vec<SpoofingIndicator>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TamperingDetector {
    pub name: String,
    pub integrity_checks: Vec<IntegrityCheck>,
    pub modification_patterns: Vec<String>,
    pub data_tampering_vectors: Vec<String>,
    pub code_injection_patterns: Vec<String>,
    pub tampering_indicators: Vec<TamperingIndicator>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RepudiationDetector {
    pub name: String,
    pub audit_trail_requirements: Vec<String>,
    pub non_repudiation_mechanisms: Vec<String>,
    pub logging_patterns: Vec<String>,
    pub evidence_collection_methods: Vec<String>,
    pub repudiation_risks: Vec<RepudiationRisk>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct InformationDisclosureDetector {
    pub name: String,
    pub data_leakage_patterns: Vec<String>,
    pub privacy_violations: Vec<String>,
    pub information_exposure_vectors: Vec<String>,
    pub data_classification_requirements: Vec<String>,
    pub disclosure_indicators: Vec<DisclosureIndicator>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DenialOfServiceDetector {
    pub name: String,
    pub resource_exhaustion_patterns: Vec<String>,
    pub availability_requirements: Vec<String>,
    pub dos_vectors: Vec<String>,
    pub rate_limiting_requirements: Vec<String>,
    pub dos_indicators: Vec<DosIndicator>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ElevationOfPrivilegeDetector {
    pub name: String,
    pub privilege_escalation_patterns: Vec<String>,
    pub access_control_requirements: Vec<String>,
    pub authorization_bypass_patterns: Vec<String>,
    pub privilege_boundaries: Vec<String>,
    pub escalation_indicators: Vec<EscalationIndicator>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackPattern {
    pub pattern_id: String,
    pub name: String,
    pub description: String,
    pub attack_phases: Vec<AttackPhase>,
    pub required_capabilities: Vec<String>,
    pub indicators: Vec<String>,
    pub countermeasures: Vec<String>,
    pub pattern_variations: Vec<PatternVariation>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackTreeTemplate {
    pub template_id: String,
    pub name: String,
    pub root_goal: String,
    pub node_templates: Vec<NodeTemplate>,
    pub connection_rules: Vec<ConnectionRule>,
    pub template_parameters: HashMap<String, String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatActor {
    pub actor_id: String,
    pub name: String,
    pub actor_type: ThreatActorType,
    pub motivation: Vec<String>,
    pub capabilities: ThreatCapabilities,
    pub resources: ThreatResources,
    pub target_preferences: Vec<String>,
    pub attack_patterns: Vec<String>,
    pub geographic_focus: Vec<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ThreatActorType {
    NationState,
    CriminalOrganization,
    Hacktivist,
    InsiderThreat,
    ScriptKiddie,
    Competitor,
    Terrorist,
    Unknown,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatCapabilities {
    pub technical_sophistication: f64,
    pub resource_availability: f64,
    pub stealth_capability: f64,
    pub persistence_capability: f64,
    pub social_engineering_skills: f64,
    pub zero_day_access: bool,
    pub insider_access: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatTimeline {
    pub reconnaissance_phase: Duration,
    pub initial_access_phase: Duration,
    pub persistence_phase: Duration,
    pub privilege_escalation_phase: Duration,
    pub lateral_movement_phase: Duration,
    pub data_collection_phase: Duration,
    pub exfiltration_phase: Duration,
    pub cleanup_phase: Duration,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatModelingResult {
    pub model_id: String,
    pub analysis_timestamp: SystemTime,
    pub stride_analysis: StrideAnalysisResult,
    pub attack_trees: Vec<AttackTree>,
    pub threat_scenarios: Vec<ThreatScenario>,
    pub attack_vectors: Vec<AttackVector>,
    pub threat_landscape: ThreatLandscapeAssessment,
    pub intelligence_insights: Vec<IntelligenceInsight>,
    pub risk_prioritization: Vec<ThreatRiskPriority>,
    pub mitigation_recommendations: Vec<MitigationRecommendation>,
    pub model_confidence: f64,
    pub model_metadata: HashMap<String, String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct StrideAnalysisResult {
    pub analysis_id: String,
    pub spoofing_threats: Vec<SpoofingThreat>,
    pub tampering_threats: Vec<TamperingThreat>,
    pub repudiation_threats: Vec<RepudiationThreat>,
    pub information_disclosure_threats: Vec<InformationDisclosureThreat>,
    pub denial_of_service_threats: Vec<DenialOfServiceThreat>,
    pub elevation_of_privilege_threats: Vec<ElevationOfPrivilegeThreat>,
    pub composite_threats: Vec<CompositeThreat>,
    pub stride_scores: HashMap<StrideCategory, f64>,
    pub overall_stride_rating: f64,
    pub confidence_intervals: HashMap<StrideCategory, (f64, f64)>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackTree {
    pub tree_id: String,
    pub root_node: AttackNode,
    pub attack_paths: Vec<AttackPath>,
    pub critical_paths: Vec<CriticalPath>,
    pub success_probability: f64,
    pub attack_cost: f64,
    pub detection_probability: f64,
    pub tree_metrics: AttackTreeMetrics,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackNode {
    pub node_id: String,
    pub node_type: AttackNodeType,
    pub description: String,
    pub children: Vec<AttackNode>,
    pub gate_type: Option<LogicGate>,
    pub success_probability: f64,
    pub attack_cost: f64,
    pub skill_required: f64,
    pub detection_probability: f64,
    pub impact_level: f64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AttackNodeType {
    Goal,
    Subgoal,
    Action,
    Condition,
    Defense,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum LogicGate {
    And,
    Or,
    Not,
    Xor,
    KOfN(usize, usize),
}

impl ThreatModelingEngine {
    pub fn new() -> Self {
        Self {
            stride_analyzer: StrideAnalyzer::new(),
            attack_tree_generator: AttackTreeGenerator::new(),
            threat_scenarios: Vec::new(),
            threat_intelligence: ThreatIntelligenceManager::new(),
            attack_vectors: Vec::new(),
            threat_landscape: ThreatLandscapeAssessment::new(),
            modeling_config: ThreatModelingConfig::default(),
            threat_cache: HashMap::new(),
        }
    }

    pub fn analyze_threats(&mut self, context: &TraitUsageContext) -> Result<ThreatModelingResult, ThreatModelingError> {
        let model_id = self.generate_model_id(context);

        if let Some(cached_result) = self.get_cached_result(&model_id) {
            if self.is_cache_valid(&cached_result) {
                return Ok(cached_result.result.clone());
            }
        }

        let stride_analysis = self.perform_stride_analysis(context)?;
        let attack_trees = self.generate_attack_trees(context, &stride_analysis)?;
        let threat_scenarios = self.generate_threat_scenarios(context, &stride_analysis)?;
        let attack_vectors = self.identify_attack_vectors(context)?;
        let threat_landscape = self.assess_threat_landscape(context)?;
        let intelligence_insights = self.gather_intelligence_insights(context)?;
        let risk_prioritization = self.prioritize_threats(&stride_analysis, &attack_trees)?;
        let mitigation_recommendations = self.generate_mitigation_recommendations(&stride_analysis, &attack_trees)?;

        let result = ThreatModelingResult {
            model_id: model_id.clone(),
            analysis_timestamp: SystemTime::now(),
            stride_analysis,
            attack_trees,
            threat_scenarios,
            attack_vectors,
            threat_landscape,
            intelligence_insights,
            risk_prioritization,
            mitigation_recommendations,
            model_confidence: self.calculate_model_confidence()?,
            model_metadata: self.generate_metadata(context),
        };

        self.cache_result(model_id, &result);
        Ok(result)
    }

    fn perform_stride_analysis(&mut self, context: &TraitUsageContext) -> Result<StrideAnalysisResult, ThreatModelingError> {
        let mut spoofing_threats = Vec::new();
        let mut tampering_threats = Vec::new();
        let mut repudiation_threats = Vec::new();
        let mut information_disclosure_threats = Vec::new();
        let mut denial_of_service_threats = Vec::new();
        let mut elevation_of_privilege_threats = Vec::new();
        let mut composite_threats = Vec::new();

        for detector in &self.stride_analyzer.spoofing_detectors {
            spoofing_threats.extend(detector.detect_spoofing_threats(context)?);
        }

        for detector in &self.stride_analyzer.tampering_detectors {
            tampering_threats.extend(detector.detect_tampering_threats(context)?);
        }

        for detector in &self.stride_analyzer.repudiation_detectors {
            repudiation_threats.extend(detector.detect_repudiation_threats(context)?);
        }

        for detector in &self.stride_analyzer.information_disclosure_detectors {
            information_disclosure_threats.extend(detector.detect_disclosure_threats(context)?);
        }

        for detector in &self.stride_analyzer.denial_of_service_detectors {
            denial_of_service_threats.extend(detector.detect_dos_threats(context)?);
        }

        for detector in &self.stride_analyzer.elevation_of_privilege_detectors {
            elevation_of_privilege_threats.extend(detector.detect_escalation_threats(context)?);
        }

        composite_threats = self.identify_composite_threats(
            &spoofing_threats,
            &tampering_threats,
            &repudiation_threats,
            &information_disclosure_threats,
            &denial_of_service_threats,
            &elevation_of_privilege_threats,
        )?;

        let stride_scores = self.calculate_stride_scores(
            &spoofing_threats,
            &tampering_threats,
            &repudiation_threats,
            &information_disclosure_threats,
            &denial_of_service_threats,
            &elevation_of_privilege_threats,
        )?;

        let overall_stride_rating = self.calculate_overall_stride_rating(&stride_scores)?;
        let confidence_intervals = self.calculate_confidence_intervals(&stride_scores)?;

        Ok(StrideAnalysisResult {
            analysis_id: format!("stride_{}", SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).expect("duration_since should succeed").as_secs()),
            spoofing_threats,
            tampering_threats,
            repudiation_threats,
            information_disclosure_threats,
            denial_of_service_threats,
            elevation_of_privilege_threats,
            composite_threats,
            stride_scores,
            overall_stride_rating,
            confidence_intervals,
        })
    }

    fn generate_attack_trees(&mut self, context: &TraitUsageContext, stride_analysis: &StrideAnalysisResult) -> Result<Vec<AttackTree>, ThreatModelingError> {
        let mut attack_trees = Vec::new();

        for pattern in self.attack_tree_generator.attack_patterns.values() {
            if self.is_pattern_applicable(pattern, context)? {
                let tree = self.build_attack_tree_from_pattern(pattern, context, stride_analysis)?;
                attack_trees.push(tree);
            }
        }

        for template in &self.attack_tree_generator.tree_templates {
            if self.is_template_applicable(template, context)? {
                let tree = self.build_attack_tree_from_template(template, context, stride_analysis)?;
                attack_trees.push(tree);
            }
        }

        let custom_trees = self.generate_custom_attack_trees(context, stride_analysis)?;
        attack_trees.extend(custom_trees);

        for tree in &mut attack_trees {
            self.optimize_attack_tree(tree)?;
            self.calculate_tree_metrics(tree)?;
        }

        Ok(attack_trees)
    }

    fn generate_threat_scenarios(&mut self, context: &TraitUsageContext, stride_analysis: &StrideAnalysisResult) -> Result<Vec<ThreatScenario>, ThreatModelingError> {
        let mut scenarios = Vec::new();

        let base_scenarios = self.generate_base_threat_scenarios(context, stride_analysis)?;
        scenarios.extend(base_scenarios);

        let advanced_scenarios = self.generate_advanced_persistent_threat_scenarios(context)?;
        scenarios.extend(advanced_scenarios);

        let insider_scenarios = self.generate_insider_threat_scenarios(context)?;
        scenarios.extend(insider_scenarios);

        let supply_chain_scenarios = self.generate_supply_chain_attack_scenarios(context)?;
        scenarios.extend(supply_chain_scenarios);

        let zero_day_scenarios = self.generate_zero_day_scenarios(context)?;
        scenarios.extend(zero_day_scenarios);

        for scenario in &mut scenarios {
            self.enrich_scenario_with_intelligence(scenario)?;
            self.calculate_scenario_likelihood(scenario, context)?;
            self.generate_scenario_variants(scenario, context)?;
        }

        Ok(scenarios)
    }

    fn identify_attack_vectors(&mut self, context: &TraitUsageContext) -> Result<Vec<AttackVector>, ThreatModelingError> {
        let mut vectors = Vec::new();

        let network_vectors = self.identify_network_attack_vectors(context)?;
        vectors.extend(network_vectors);

        let application_vectors = self.identify_application_attack_vectors(context)?;
        vectors.extend(application_vectors);

        let social_engineering_vectors = self.identify_social_engineering_vectors(context)?;
        vectors.extend(social_engineering_vectors);

        let physical_vectors = self.identify_physical_attack_vectors(context)?;
        vectors.extend(physical_vectors);

        let supply_chain_vectors = self.identify_supply_chain_vectors(context)?;
        vectors.extend(supply_chain_vectors);

        for vector in &mut vectors {
            self.analyze_vector_effectiveness(vector, context)?;
            self.identify_vector_dependencies(vector)?;
            self.generate_vector_variants(vector, context)?;
        }

        Ok(vectors)
    }

    fn assess_threat_landscape(&mut self, context: &TraitUsageContext) -> Result<ThreatLandscapeAssessment, ThreatModelingError> {
        let threat_environment = self.analyze_threat_environment(context)?;
        let emerging_threats = self.identify_emerging_threats(context)?;
        let threat_trends = self.analyze_threat_trends(context)?;
        let geographic_factors = self.assess_geographic_threat_factors(context)?;
        let industry_threats = self.assess_industry_specific_threats(context)?;
        let technology_threats = self.assess_technology_threats(context)?;
        let evolution_models = self.build_threat_evolution_models(context)?;
        let landscape_metrics = self.calculate_landscape_metrics()?;

        Ok(ThreatLandscapeAssessment {
            threat_environment,
            emerging_threats,
            threat_trends,
            geographic_factors,
            industry_specific_threats: industry_threats,
            technology_threats,
            threat_evolution_models: evolution_models,
            landscape_metrics,
        })
    }

    fn gather_intelligence_insights(&mut self, context: &TraitUsageContext) -> Result<Vec<IntelligenceInsight>, ThreatModelingError> {
        let mut insights = Vec::new();

        for source in &self.threat_intelligence.intelligence_sources {
            let source_insights = source.gather_insights(context)?;
            insights.extend(source_insights);
        }

        let correlated_insights = self.threat_intelligence.correlate_intelligence(&insights)?;
        insights.extend(correlated_insights);

        let scored_insights = self.threat_intelligence.score_intelligence(&insights)?;
        insights.extend(scored_insights);

        Ok(insights)
    }

    fn prioritize_threats(&self, stride_analysis: &StrideAnalysisResult, attack_trees: &[AttackTree]) -> Result<Vec<ThreatRiskPriority>, ThreatModelingError> {
        let mut priorities = Vec::new();

        for (category, score) in &stride_analysis.stride_scores {
            let priority = ThreatRiskPriority {
                threat_category: format!("{:?}", category),
                risk_score: *score,
                priority_level: self.calculate_priority_level(*score)?,
                justification: self.generate_priority_justification(category, *score)?,
                recommended_timeline: self.calculate_response_timeline(*score)?,
            };
            priorities.push(priority);
        }

        for tree in attack_trees {
            for path in &tree.critical_paths {
                let priority = ThreatRiskPriority {
                    threat_category: format!("Attack Path: {}", path.path_id),
                    risk_score: path.risk_score,
                    priority_level: self.calculate_priority_level(path.risk_score)?,
                    justification: format!("Critical attack path with {} steps", path.steps.len()),
                    recommended_timeline: self.calculate_response_timeline(path.risk_score)?,
                };
                priorities.push(priority);
            }
        }

        priorities.sort_by(|a, b| b.risk_score.partial_cmp(&a.risk_score).unwrap_or(std::cmp::Ordering::Equal));
        Ok(priorities)
    }

    fn generate_mitigation_recommendations(&self, stride_analysis: &StrideAnalysisResult, attack_trees: &[AttackTree]) -> Result<Vec<MitigationRecommendation>, ThreatModelingError> {
        let mut recommendations = Vec::new();

        for (category, threats) in [
            (StrideCategory::Spoofing, &stride_analysis.spoofing_threats as &dyn std::any::Any),
            (StrideCategory::Tampering, &stride_analysis.tampering_threats as &dyn std::any::Any),
            (StrideCategory::Repudiation, &stride_analysis.repudiation_threats as &dyn std::any::Any),
            (StrideCategory::InformationDisclosure, &stride_analysis.information_disclosure_threats as &dyn std::any::Any),
            (StrideCategory::DenialOfService, &stride_analysis.denial_of_service_threats as &dyn std::any::Any),
            (StrideCategory::ElevationOfPrivilege, &stride_analysis.elevation_of_privilege_threats as &dyn std::any::Any),
        ] {
            let category_recommendations = self.generate_category_mitigations(&category)?;
            recommendations.extend(category_recommendations);
        }

        for tree in attack_trees {
            let tree_recommendations = self.generate_attack_tree_mitigations(tree)?;
            recommendations.extend(tree_recommendations);
        }

        Ok(recommendations)
    }

    fn calculate_model_confidence(&self) -> Result<f64, ThreatModelingError> {
        let mut confidence_factors = Vec::new();

        confidence_factors.push(self.calculate_data_quality_confidence()?);
        confidence_factors.push(self.calculate_intelligence_confidence()?);
        confidence_factors.push(self.calculate_model_completeness_confidence()?);
        confidence_factors.push(self.calculate_temporal_confidence()?);

        let weighted_confidence = confidence_factors.iter().sum::<f64>() / confidence_factors.len() as f64;
        Ok(weighted_confidence.min(1.0).max(0.0))
    }
}

impl StrideAnalyzer {
    pub fn new() -> Self {
        Self {
            spoofing_detectors: Self::initialize_spoofing_detectors(),
            tampering_detectors: Self::initialize_tampering_detectors(),
            repudiation_detectors: Self::initialize_repudiation_detectors(),
            information_disclosure_detectors: Self::initialize_information_disclosure_detectors(),
            denial_of_service_detectors: Self::initialize_denial_of_service_detectors(),
            elevation_of_privilege_detectors: Self::initialize_elevation_of_privilege_detectors(),
            stride_weights: Self::initialize_stride_weights(),
            contextual_analyzers: HashMap::new(),
        }
    }

    fn initialize_spoofing_detectors() -> Vec<SpoofingDetector> {
        vec![
            SpoofingDetector {
                name: "Identity Spoofing Detector".to_string(),
                detection_patterns: vec![
                    "weak_authentication".to_string(),
                    "missing_identity_verification".to_string(),
                    "user_impersonation_risk".to_string(),
                ],
                trait_specific_checks: HashMap::new(),
                identity_verification_requirements: vec![
                    "multi_factor_authentication".to_string(),
                    "digital_certificates".to_string(),
                    "biometric_verification".to_string(),
                ],
                authentication_bypass_patterns: vec![
                    "default_credentials".to_string(),
                    "credential_stuffing".to_string(),
                    "session_hijacking".to_string(),
                ],
                spoofing_indicators: Vec::new(),
            },
        ]
    }

    fn initialize_tampering_detectors() -> Vec<TamperingDetector> {
        vec![
            TamperingDetector {
                name: "Data Integrity Detector".to_string(),
                integrity_checks: vec![
                    IntegrityCheck {
                        check_type: "checksum_verification".to_string(),
                        algorithm: "sha256".to_string(),
                        scope: "data_in_transit".to_string(),
                    },
                ],
                modification_patterns: vec![
                    "unauthorized_data_modification".to_string(),
                    "code_injection".to_string(),
                    "parameter_tampering".to_string(),
                ],
                data_tampering_vectors: vec![
                    "man_in_the_middle".to_string(),
                    "database_manipulation".to_string(),
                    "file_system_modification".to_string(),
                ],
                code_injection_patterns: vec![
                    "sql_injection".to_string(),
                    "xss_injection".to_string(),
                    "command_injection".to_string(),
                ],
                tampering_indicators: Vec::new(),
            },
        ]
    }

    fn initialize_repudiation_detectors() -> Vec<RepudiationDetector> {
        vec![
            RepudiationDetector {
                name: "Non-Repudiation Detector".to_string(),
                audit_trail_requirements: vec![
                    "comprehensive_logging".to_string(),
                    "tamper_evident_logs".to_string(),
                    "digital_signatures".to_string(),
                ],
                non_repudiation_mechanisms: vec![
                    "digital_signatures".to_string(),
                    "timestamping_services".to_string(),
                    "audit_trails".to_string(),
                ],
                logging_patterns: vec![
                    "transaction_logging".to_string(),
                    "access_logging".to_string(),
                    "error_logging".to_string(),
                ],
                evidence_collection_methods: vec![
                    "forensic_imaging".to_string(),
                    "chain_of_custody".to_string(),
                    "witness_testimony".to_string(),
                ],
                repudiation_risks: Vec::new(),
            },
        ]
    }

    fn initialize_information_disclosure_detectors() -> Vec<InformationDisclosureDetector> {
        vec![
            InformationDisclosureDetector {
                name: "Data Leakage Detector".to_string(),
                data_leakage_patterns: vec![
                    "sensitive_data_exposure".to_string(),
                    "information_disclosure".to_string(),
                    "data_exfiltration".to_string(),
                ],
                privacy_violations: vec![
                    "personal_data_exposure".to_string(),
                    "unauthorized_access".to_string(),
                    "privacy_breach".to_string(),
                ],
                information_exposure_vectors: vec![
                    "error_messages".to_string(),
                    "debug_information".to_string(),
                    "configuration_files".to_string(),
                ],
                data_classification_requirements: vec![
                    "confidential".to_string(),
                    "restricted".to_string(),
                    "public".to_string(),
                ],
                disclosure_indicators: Vec::new(),
            },
        ]
    }

    fn initialize_denial_of_service_detectors() -> Vec<DenialOfServiceDetector> {
        vec![
            DenialOfServiceDetector {
                name: "Resource Exhaustion Detector".to_string(),
                resource_exhaustion_patterns: vec![
                    "cpu_exhaustion".to_string(),
                    "memory_exhaustion".to_string(),
                    "network_flooding".to_string(),
                ],
                availability_requirements: vec![
                    "99.9_percent_uptime".to_string(),
                    "load_balancing".to_string(),
                    "failover_mechanisms".to_string(),
                ],
                dos_vectors: vec![
                    "distributed_dos".to_string(),
                    "amplification_attacks".to_string(),
                    "resource_consumption".to_string(),
                ],
                rate_limiting_requirements: vec![
                    "request_throttling".to_string(),
                    "connection_limits".to_string(),
                    "bandwidth_limits".to_string(),
                ],
                dos_indicators: Vec::new(),
            },
        ]
    }

    fn initialize_elevation_of_privilege_detectors() -> Vec<ElevationOfPrivilegeDetector> {
        vec![
            ElevationOfPrivilegeDetector {
                name: "Privilege Escalation Detector".to_string(),
                privilege_escalation_patterns: vec![
                    "vertical_escalation".to_string(),
                    "horizontal_escalation".to_string(),
                    "role_confusion".to_string(),
                ],
                access_control_requirements: vec![
                    "role_based_access".to_string(),
                    "principle_of_least_privilege".to_string(),
                    "mandatory_access_control".to_string(),
                ],
                authorization_bypass_patterns: vec![
                    "direct_object_reference".to_string(),
                    "path_traversal".to_string(),
                    "privilege_escalation".to_string(),
                ],
                privilege_boundaries: vec![
                    "user_space".to_string(),
                    "kernel_space".to_string(),
                    "administrative_space".to_string(),
                ],
                escalation_indicators: Vec::new(),
            },
        ]
    }

    fn initialize_stride_weights() -> HashMap<StrideCategory, f64> {
        let mut weights = HashMap::new();
        weights.insert(StrideCategory::Spoofing, 1.0);
        weights.insert(StrideCategory::Tampering, 1.0);
        weights.insert(StrideCategory::Repudiation, 1.0);
        weights.insert(StrideCategory::InformationDisclosure, 1.0);
        weights.insert(StrideCategory::DenialOfService, 1.0);
        weights.insert(StrideCategory::ElevationOfPrivilege, 1.0);
        weights
    }
}

impl AttackTreeGenerator {
    pub fn new() -> Self {
        Self {
            attack_patterns: HashMap::new(),
            tree_templates: Vec::new(),
            node_generators: HashMap::new(),
            tree_optimization: AttackTreeOptimization::new(),
            probability_calculators: Vec::new(),
            cost_benefit_analyzers: Vec::new(),
        }
    }
}

impl ThreatIntelligenceManager {
    pub fn new() -> Self {
        Self {
            intelligence_sources: Vec::new(),
            threat_feeds: HashMap::new(),
            indicators_of_compromise: Vec::new(),
            attack_campaigns: Vec::new(),
            threat_actor_profiles: HashMap::new(),
            intelligence_correlation: IntelligenceCorrelation::new(),
            feed_aggregator: FeedAggregator::new(),
            intelligence_scoring: IntelligenceScoring::new(),
        }
    }
}

impl ThreatLandscapeAssessment {
    pub fn new() -> Self {
        Self {
            threat_environment: ThreatEnvironment::new(),
            emerging_threats: Vec::new(),
            threat_trends: Vec::new(),
            geographic_factors: HashMap::new(),
            industry_specific_threats: HashMap::new(),
            technology_threats: HashMap::new(),
            threat_evolution_models: Vec::new(),
            landscape_metrics: LandscapeMetrics::new(),
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ThreatModelingError {
    AnalysisError(String),
    DataError(String),
    ModelingError(String),
    IntelligenceError(String),
    ConfigurationError(String),
}

impl std::fmt::Display for ThreatModelingError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            ThreatModelingError::AnalysisError(msg) => write!(f, "Analysis error: {}", msg),
            ThreatModelingError::DataError(msg) => write!(f, "Data error: {}", msg),
            ThreatModelingError::ModelingError(msg) => write!(f, "Modeling error: {}", msg),
            ThreatModelingError::IntelligenceError(msg) => write!(f, "Intelligence error: {}", msg),
            ThreatModelingError::ConfigurationError(msg) => write!(f, "Configuration error: {}", msg),
        }
    }
}

impl std::error::Error for ThreatModelingError {}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatModelingConfig {
    pub stride_weights: HashMap<StrideCategory, f64>,
    pub intelligence_sources: Vec<String>,
    pub model_confidence_threshold: f64,
    pub cache_duration: Duration,
    pub analysis_depth: AnalysisDepth,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AnalysisDepth {
    Surface,
    Moderate,
    Deep,
    Comprehensive,
}

impl Default for ThreatModelingConfig {
    fn default() -> Self {
        let mut stride_weights = HashMap::new();
        stride_weights.insert(StrideCategory::Spoofing, 1.0);
        stride_weights.insert(StrideCategory::Tampering, 1.0);
        stride_weights.insert(StrideCategory::Repudiation, 1.0);
        stride_weights.insert(StrideCategory::InformationDisclosure, 1.0);
        stride_weights.insert(StrideCategory::DenialOfService, 1.0);
        stride_weights.insert(StrideCategory::ElevationOfPrivilege, 1.0);

        Self {
            stride_weights,
            intelligence_sources: vec!["mitre_att&ck".to_string(), "nist_nvd".to_string()],
            model_confidence_threshold: 0.8,
            cache_duration: Duration::from_secs(3600),
            analysis_depth: AnalysisDepth::Moderate,
        }
    }
}

macro_rules! define_supporting_types {
    () => {
        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct SpoofingIndicator {
            pub indicator_type: String,
            pub pattern: String,
            pub confidence: f64,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct TamperingIndicator {
            pub indicator_type: String,
            pub modification_type: String,
            pub detection_method: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct IntegrityCheck {
            pub check_type: String,
            pub algorithm: String,
            pub scope: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct RepudiationRisk {
            pub risk_type: String,
            pub likelihood: f64,
            pub impact: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct DisclosureIndicator {
            pub data_type: String,
            pub exposure_method: String,
            pub sensitivity_level: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct DosIndicator {
            pub attack_type: String,
            pub resource_target: String,
            pub impact_level: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct EscalationIndicator {
            pub escalation_type: String,
            pub target_privilege: String,
            pub method: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct AttackPhase {
            pub phase_name: String,
            pub description: String,
            pub techniques: Vec<String>,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct PatternVariation {
            pub variation_name: String,
            pub differences: Vec<String>,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct NodeTemplate {
            pub template_id: String,
            pub node_type: AttackNodeType,
            pub description_template: String,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct ConnectionRule {
            pub from_template: String,
            pub to_template: String,
            pub gate_type: LogicGate,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct ThreatResources {
            pub financial_resources: f64,
            pub technical_resources: f64,
            pub human_resources: f64,
            pub time_resources: f64,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct ImpactAssessment {
            pub confidentiality_impact: f64,
            pub integrity_impact: f64,
            pub availability_impact: f64,
            pub financial_impact: f64,
            pub reputational_impact: f64,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct DetectionMethod {
            pub method_name: String,
            pub detection_probability: f64,
            pub false_positive_rate: f64,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct MitigationStrategy {
            pub strategy_name: String,
            pub effectiveness: f64,
            pub implementation_cost: f64,
            pub implementation_time: Duration,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct ScenarioVariant {
            pub variant_id: String,
            pub description: String,
            pub probability_modifier: f64,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct AttackSurface {
            pub network_surface: Vec<String>,
            pub application_surface: Vec<String>,
            pub physical_surface: Vec<String>,
            pub human_surface: Vec<String>,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct EntryPoint {
            pub entry_id: String,
            pub entry_type: String,
            pub accessibility: f64,
            pub security_controls: Vec<String>,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct AttackStep {
            pub step_id: String,
            pub description: String,
            pub required_skills: Vec<String>,
            pub success_probability: f64,
            pub detection_probability: f64,
        }

        #[derive(Debug, Clone, Serialize, Deserialize)]
        pub struct VectorVariant {
            pub variant_id: String,
            pub modifications: Vec<String>,
            pub effectiveness_change: f64,
        }
    };
}

define_supporting_types!();

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CachedThreatModel {
    pub result: ThreatModelingResult,
    pub cache_timestamp: SystemTime,
    pub cache_ttl: Duration,
}

pub fn create_threat_modeling_engine() -> ThreatModelingEngine {
    ThreatModelingEngine::new()
}

pub fn create_comprehensive_threat_model(context: &TraitUsageContext) -> Result<ThreatModelingResult, ThreatModelingError> {
    let mut engine = ThreatModelingEngine::new();
    engine.analyze_threats(context)
}