use crate::{Event, EventualiError, Result};
use serde::{Deserialize, Serialize};
use std::collections::{HashMap, HashSet};
use chrono::{DateTime, Utc};

/// Vulnerability scanning and security assessment system
pub struct VulnerabilityScanner {
    scan_rules: Vec<ScanRule>,
    severity_thresholds: HashMap<VulnerabilitySeverity, u32>,
    whitelist: HashSet<String>,
}

/// A vulnerability scanning rule
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ScanRule {
    pub id: String,
    pub name: String,
    pub description: String,
    pub category: VulnerabilityCategory,
    pub severity: VulnerabilitySeverity,
    pub pattern: ScanPattern,
    pub enabled: bool,
    pub created_at: DateTime<Utc>,
    pub updated_at: DateTime<Utc>,
}

/// Categories of security vulnerabilities
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Hash, Eq)]
pub enum VulnerabilityCategory {
    DataLeakage,
    InjectionAttack,
    AccessControl,
    Cryptographic,
    Authentication,
    Authorization,
    InputValidation,
    OutputEncoding,
    SessionManagement,
    ErrorHandling,
    Logging,
    Configuration,
    BusinessLogic,
    ApiSecurity,
    NetworkSecurity,
}

/// Severity levels for vulnerabilities
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum VulnerabilitySeverity {
    Critical,
    High,
    Medium,
    Low,
    Info,
}

/// Patterns for vulnerability detection
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ScanPattern {
    RegexPattern(String),
    JsonPathPattern(String),
    KeywordPattern(Vec<String>),
    StructuralPattern(StructuralCheck),
    CustomRule(String), // Custom business logic
}

/// Structural security checks
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct StructuralCheck {
    pub check_type: StructuralCheckType,
    pub parameters: HashMap<String, String>,
}

/// Types of structural security checks
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum StructuralCheckType {
    EncryptionPresence,
    AccessControlValidation,
    DataSanitization,
    AuthenticationRequired,
    AuthorizationRequired,
    AuditTrailPresence,
    RateLimitCompliance,
    InputSizeValidation,
}

/// Result of a vulnerability scan
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct VulnerabilityScanResult {
    pub scan_id: String,
    pub scan_timestamp: DateTime<Utc>,
    pub events_scanned: usize,
    pub vulnerabilities_found: Vec<VulnerabilityFinding>,
    pub scan_duration_ms: u64,
    pub severity_counts: HashMap<VulnerabilitySeverity, usize>,
    pub category_counts: HashMap<VulnerabilityCategory, usize>,
    pub compliance_score: f64, // 0.0 to 100.0
}

/// A specific vulnerability finding
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct VulnerabilityFinding {
    pub id: String,
    pub rule_id: String,
    pub event_id: String,
    pub aggregate_id: String,
    pub category: VulnerabilityCategory,
    pub severity: VulnerabilitySeverity,
    pub title: String,
    pub description: String,
    pub evidence: String,
    pub remediation: String,
    pub cve_references: Vec<String>,
    pub owasp_references: Vec<String>,
    pub found_at: DateTime<Utc>,
    pub status: VulnerabilityStatus,
}

/// Status of a vulnerability finding
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
pub enum VulnerabilityStatus {
    Open,
    InProgress,
    Resolved,
    FalsePositive,
    Accepted, // Risk accepted by business
    Suppressed, // Temporarily suppressed
}

/// Security baseline configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityBaseline {
    pub name: String,
    pub version: String,
    pub description: String,
    pub requirements: Vec<SecurityRequirement>,
    pub compliance_frameworks: Vec<ComplianceFramework>,
    pub created_at: DateTime<Utc>,
}

/// A specific security requirement
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityRequirement {
    pub id: String,
    pub title: String,
    pub description: String,
    pub category: VulnerabilityCategory,
    pub required_controls: Vec<String>,
    pub validation_rules: Vec<String>,
    pub compliance_mappings: HashMap<String, String>, // Framework -> Requirement ID
}

/// Supported compliance frameworks
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ComplianceFramework {
    OWASP,
    NIST,
    ISO27001,
    SOC2,
    GDPR,
    HIPAA,
    PCI,
    Custom(String),
}

/// Penetration testing simulation
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PenetrationTest {
    pub test_id: String,
    pub test_name: String,
    pub target_scope: Vec<String>, // Aggregate patterns or event types
    pub attack_scenarios: Vec<AttackScenario>,
    pub started_at: DateTime<Utc>,
    pub completed_at: Option<DateTime<Utc>>,
    pub status: TestStatus,
    pub findings: Vec<PenetrationFinding>,
}

/// Attack scenarios for penetration testing
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackScenario {
    pub scenario_id: String,
    pub name: String,
    pub description: String,
    pub attack_type: AttackType,
    pub steps: Vec<AttackStep>,
    pub expected_outcome: String,
    pub actual_outcome: Option<String>,
    pub success: Option<bool>,
}

/// Types of attack scenarios
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum AttackType {
    SqlInjection,
    NoSqlInjection,
    CommandInjection,
    CrossSiteScripting,
    CrossSiteRequestForgery,
    AuthenticationBypass,
    AuthorizationBypass,
    PrivilegeEscalation,
    DataExfiltration,
    DenialOfService,
    BusinessLogicFlaws,
    CryptographicAttacks,
    SessionManipulation,
}

/// Individual step in an attack scenario
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AttackStep {
    pub step_number: u32,
    pub action: String,
    pub payload: Option<String>,
    pub expected_response: String,
    pub actual_response: Option<String>,
    pub success: Option<bool>,
}

/// Penetration test finding
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PenetrationFinding {
    pub finding_id: String,
    pub scenario_id: String,
    pub severity: VulnerabilitySeverity,
    pub title: String,
    pub description: String,
    pub attack_vector: String,
    pub impact: String,
    pub evidence: String,
    pub remediation: String,
    pub exploitability: ExploitabilityLevel,
}

/// How easy it is to exploit a vulnerability
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ExploitabilityLevel {
    Trivial,
    Easy,
    Moderate,
    Difficult,
    VeryDifficult,
}

/// Test execution status
#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum TestStatus {
    Pending,
    Running,
    Completed,
    Failed,
    Cancelled,
}

impl VulnerabilityScanner {
    /// Create a new vulnerability scanner
    pub fn new() -> Self {
        let mut scanner = Self {
            scan_rules: Vec::new(),
            severity_thresholds: HashMap::new(),
            whitelist: HashSet::new(),
        };
        
        // Initialize default severity thresholds
        scanner.severity_thresholds.insert(VulnerabilitySeverity::Critical, 0);
        scanner.severity_thresholds.insert(VulnerabilitySeverity::High, 5);
        scanner.severity_thresholds.insert(VulnerabilitySeverity::Medium, 20);
        scanner.severity_thresholds.insert(VulnerabilitySeverity::Low, 50);
        scanner.severity_thresholds.insert(VulnerabilitySeverity::Info, 100);
        
        // Load default scan rules
        scanner.load_default_rules();
        
        scanner
    }

    /// Load default vulnerability scanning rules
    fn load_default_rules(&mut self) {
        // SQL Injection detection
        self.add_rule(ScanRule {
            id: "sql-injection-001".to_string(),
            name: "SQL Injection Pattern Detection".to_string(),
            description: "Detects potential SQL injection patterns in event data".to_string(),
            category: VulnerabilityCategory::InjectionAttack,
            severity: VulnerabilitySeverity::High,
            pattern: ScanPattern::RegexPattern(
                r"(?i)(union\s+select|select\s+.*\s+from|insert\s+into|update\s+.*\s+set|delete\s+from|drop\s+table|\'\s*or\s*\'\w*\'\s*=\s*\'\w*|admin\'\s*--|\'\s*;\s*drop)".to_string()
            ),
            enabled: true,
            created_at: Utc::now(),
            updated_at: Utc::now(),
        }).unwrap();

        // PII exposure detection
        self.add_rule(ScanRule {
            id: "pii-exposure-001".to_string(),
            name: "PII Data Exposure".to_string(),
            description: "Detects potential exposure of personally identifiable information".to_string(),
            category: VulnerabilityCategory::DataLeakage,
            severity: VulnerabilitySeverity::Critical,
            pattern: ScanPattern::KeywordPattern(vec![
                "ssn".to_string(),
                "social_security".to_string(),
                "credit_card".to_string(),
                "passport".to_string(),
                "driver_license".to_string(),
            ]),
            enabled: true,
            created_at: Utc::now(),
            updated_at: Utc::now(),
        }).unwrap();

        // Weak authentication detection
        self.add_rule(ScanRule {
            id: "auth-weakness-001".to_string(),
            name: "Weak Authentication Patterns".to_string(),
            description: "Detects weak authentication patterns".to_string(),
            category: VulnerabilityCategory::Authentication,
            severity: VulnerabilitySeverity::Medium,
            pattern: ScanPattern::KeywordPattern(vec![
                "password=123456".to_string(),
                "password=admin".to_string(),
                "password=password".to_string(),
                "admin:admin".to_string(),
                "guest:guest".to_string(),
            ]),
            enabled: true,
            created_at: Utc::now(),
            updated_at: Utc::now(),
        }).unwrap();

        // Cross-site scripting detection
        self.add_rule(ScanRule {
            id: "xss-001".to_string(),
            name: "Cross-Site Scripting (XSS)".to_string(),
            description: "Detects potential XSS payloads in event data".to_string(),
            category: VulnerabilityCategory::InputValidation,
            severity: VulnerabilitySeverity::High,
            pattern: ScanPattern::RegexPattern(
                r"(?i)(<script|javascript:|onclick|onload|onerror|onmouseover|alert\(|confirm\(|prompt\()".to_string()
            ),
            enabled: true,
            created_at: Utc::now(),
            updated_at: Utc::now(),
        }).unwrap();
    }

    /// Add a new scanning rule
    pub fn add_rule(&mut self, rule: ScanRule) -> Result<()> {
        if rule.id.is_empty() {
            return Err(EventualiError::Configuration(
                "Rule ID cannot be empty".to_string()
            ));
        }
        
        // Check for duplicate rule ID
        if self.scan_rules.iter().any(|r| r.id == rule.id) {
            return Err(EventualiError::Configuration(
                format!("Rule ID already exists: {}", rule.id)
            ));
        }
        
        self.scan_rules.push(rule);
        Ok(())
    }

    /// Perform vulnerability scan on events
    pub async fn scan_events(&self, events: Vec<Event>) -> Result<VulnerabilityScanResult> {
        let scan_start = std::time::Instant::now();
        let scan_id = uuid::Uuid::new_v4().to_string();
        
        let mut vulnerabilities = Vec::new();
        let mut severity_counts: HashMap<VulnerabilitySeverity, usize> = HashMap::new();
        let mut category_counts: HashMap<VulnerabilityCategory, usize> = HashMap::new();

        for event in &events {
            // Skip whitelisted aggregates
            if self.whitelist.contains(&event.aggregate_id) {
                continue;
            }

            for rule in &self.scan_rules {
                if !rule.enabled {
                    continue;
                }

                if let Some(finding) = self.apply_scan_rule(event, rule).await? {
                    *severity_counts.entry(finding.severity.clone()).or_insert(0) += 1;
                    *category_counts.entry(finding.category.clone()).or_insert(0) += 1;
                    vulnerabilities.push(finding);
                }
            }
        }

        let scan_duration = scan_start.elapsed().as_millis() as u64;
        let compliance_score = self.calculate_compliance_score(&severity_counts, events.len());

        Ok(VulnerabilityScanResult {
            scan_id,
            scan_timestamp: Utc::now(),
            events_scanned: events.len(),
            vulnerabilities_found: vulnerabilities,
            scan_duration_ms: scan_duration,
            severity_counts,
            category_counts,
            compliance_score,
        })
    }

    /// Apply a single scan rule to an event
    async fn apply_scan_rule(&self, event: &Event, rule: &ScanRule) -> Result<Option<VulnerabilityFinding>> {
        let event_data_str = match &event.data {
            crate::EventData::Json(data) => data.to_string(),
            crate::EventData::Protobuf(data) => String::from_utf8_lossy(data).to_string(),
        };

        let matches = match &rule.pattern {
            ScanPattern::RegexPattern(pattern) => {
                regex::Regex::new(pattern)
                    .map_err(|e| EventualiError::Configuration(format!("Invalid regex: {e}")))?
                    .is_match(&event_data_str)
            },
            ScanPattern::JsonPathPattern(_path) => {
                // In a real implementation, would use jsonpath library
                false
            },
            ScanPattern::KeywordPattern(keywords) => {
                let lower_data = event_data_str.to_lowercase();
                keywords.iter().any(|keyword| lower_data.contains(&keyword.to_lowercase()))
            },
            ScanPattern::StructuralPattern(check) => {
                self.apply_structural_check(event, check).await?
            },
            ScanPattern::CustomRule(_rule) => {
                // In a real implementation, would evaluate custom rules
                false
            },
        };

        if matches {
            let finding = VulnerabilityFinding {
                id: uuid::Uuid::new_v4().to_string(),
                rule_id: rule.id.clone(),
                event_id: event.id.to_string(),
                aggregate_id: event.aggregate_id.clone(),
                category: rule.category.clone(),
                severity: rule.severity.clone(),
                title: rule.name.clone(),
                description: rule.description.clone(),
                evidence: self.extract_evidence(&event_data_str, &rule.pattern),
                remediation: self.get_remediation_advice(&rule.category),
                cve_references: Vec::new(),
                owasp_references: self.get_owasp_references(&rule.category),
                found_at: Utc::now(),
                status: VulnerabilityStatus::Open,
            };
            
            Ok(Some(finding))
        } else {
            Ok(None)
        }
    }

    /// Apply structural security check
    async fn apply_structural_check(&self, event: &Event, check: &StructuralCheck) -> Result<bool> {
        match check.check_type {
            StructuralCheckType::EncryptionPresence => {
                // Check if event data appears to be encrypted
                let data_str = match &event.data {
                    crate::EventData::Json(data) => data.to_string(),
                    crate::EventData::Protobuf(_) => return Ok(true), // Assume protobuf is encrypted
                };
                
                // Simple heuristic: if data looks like base64 and doesn't contain readable text
                Ok(!data_str.chars().any(|c| c.is_ascii_alphabetic()) || 
                   data_str.contains("encrypted") || 
                   data_str.contains("cipher"))
            },
            StructuralCheckType::AccessControlValidation => {
                // Check if event contains access control metadata
                Ok(event.metadata.user_id.is_some() || 
                   event.metadata.headers.contains_key("permissions"))
            },
            StructuralCheckType::AuditTrailPresence => {
                // Check if event contains audit information
                Ok(event.metadata.headers.contains_key("audit_trail") || 
                   event.metadata.correlation_id.is_some())
            },
            _ => Ok(false), // Default to false for unimplemented checks
        }
    }

    /// Extract evidence from matched data
    fn extract_evidence(&self, data: &str, pattern: &ScanPattern) -> String {
        match pattern {
            ScanPattern::RegexPattern(regex) => {
                if let Ok(re) = regex::Regex::new(regex) {
                    if let Some(matched) = re.find(data) {
                        return format!("Matched pattern: {}", matched.as_str());
                    }
                }
                "Pattern match found".to_string()
            },
            ScanPattern::KeywordPattern(keywords) => {
                let lower_data = data.to_lowercase();
                for keyword in keywords {
                    if lower_data.contains(&keyword.to_lowercase()) {
                        return format!("Found keyword: {keyword}");
                    }
                }
                "Keyword match found".to_string()
            },
            _ => "Vulnerability detected".to_string(),
        }
    }

    /// Get remediation advice for vulnerability category
    fn get_remediation_advice(&self, category: &VulnerabilityCategory) -> String {
        match category {
            VulnerabilityCategory::DataLeakage => {
                "Remove or encrypt sensitive data. Implement data classification and handling policies."
            },
            VulnerabilityCategory::InjectionAttack => {
                "Use parameterized queries and input validation. Sanitize all user input."
            },
            VulnerabilityCategory::Authentication => {
                "Implement strong authentication mechanisms. Use multi-factor authentication."
            },
            VulnerabilityCategory::InputValidation => {
                "Implement comprehensive input validation and output encoding."
            },
            VulnerabilityCategory::AccessControl => {
                "Implement proper access control mechanisms and least privilege principle."
            },
            _ => "Review security controls and implement appropriate countermeasures."
        }.to_string()
    }

    /// Get OWASP references for vulnerability category
    fn get_owasp_references(&self, category: &VulnerabilityCategory) -> Vec<String> {
        match category {
            VulnerabilityCategory::InjectionAttack => vec!["OWASP-A03".to_string()],
            VulnerabilityCategory::Authentication => vec!["OWASP-A07".to_string()],
            VulnerabilityCategory::AccessControl => vec!["OWASP-A01".to_string()],
            VulnerabilityCategory::InputValidation => vec!["OWASP-A03".to_string()],
            VulnerabilityCategory::DataLeakage => vec!["OWASP-A02".to_string()],
            _ => Vec::new(),
        }
    }

    /// Calculate compliance score based on findings
    fn calculate_compliance_score(&self, severity_counts: &HashMap<VulnerabilitySeverity, usize>, total_events: usize) -> f64 {
        if total_events == 0 {
            return 100.0;
        }

        let mut penalty = 0.0;
        
        for (severity, count) in severity_counts {
            let weight = match severity {
                VulnerabilitySeverity::Critical => 10.0,
                VulnerabilitySeverity::High => 5.0,
                VulnerabilitySeverity::Medium => 2.0,
                VulnerabilitySeverity::Low => 1.0,
                VulnerabilitySeverity::Info => 0.1,
            };
            
            penalty += (*count as f64) * weight;
        }

        // Normalize penalty against total events and cap at 100
        let score = 100.0 - (penalty / total_events as f64 * 10.0);
        score.clamp(0.0, 100.0)
    }

    /// Add aggregate to whitelist
    pub fn add_to_whitelist(&mut self, aggregate_id: String) {
        self.whitelist.insert(aggregate_id);
    }

    /// Remove aggregate from whitelist
    pub fn remove_from_whitelist(&mut self, aggregate_id: &str) -> bool {
        self.whitelist.remove(aggregate_id)
    }

    /// Get scan statistics
    pub fn get_scan_statistics(&self) -> HashMap<String, usize> {
        let mut stats = HashMap::new();
        stats.insert("total_rules".to_string(), self.scan_rules.len());
        stats.insert("enabled_rules".to_string(), 
                     self.scan_rules.iter().filter(|r| r.enabled).count());
        stats.insert("whitelisted_aggregates".to_string(), self.whitelist.len());

        // Count rules by category
        for rule in &self.scan_rules {
            let category_key = format!("rules_{:?}", rule.category).to_lowercase();
            *stats.entry(category_key).or_insert(0) += 1;
        }

        stats
    }
}

impl Default for VulnerabilityScanner {
    fn default() -> Self {
        Self::new()
    }
}

/// Penetration testing framework
pub struct PenetrationTestFramework {
    active_tests: HashMap<String, PenetrationTest>,
    test_scenarios: Vec<AttackScenario>,
}

impl PenetrationTestFramework {
    /// Create new penetration testing framework
    pub fn new() -> Self {
        let mut framework = Self {
            active_tests: HashMap::new(),
            test_scenarios: Vec::new(),
        };
        
        framework.load_default_scenarios();
        framework
    }

    /// Load default attack scenarios
    fn load_default_scenarios(&mut self) {
        // SQL Injection scenario
        self.test_scenarios.push(AttackScenario {
            scenario_id: "sql-injection-001".to_string(),
            name: "Basic SQL Injection".to_string(),
            description: "Test for basic SQL injection vulnerabilities".to_string(),
            attack_type: AttackType::SqlInjection,
            steps: vec![
                AttackStep {
                    step_number: 1,
                    action: "Submit SQL injection payload".to_string(),
                    payload: Some("' OR '1'='1".to_string()),
                    expected_response: "Error or unexpected data access".to_string(),
                    actual_response: None,
                    success: None,
                },
            ],
            expected_outcome: "System should reject malicious input".to_string(),
            actual_outcome: None,
            success: None,
        });

        // Authentication bypass scenario
        self.test_scenarios.push(AttackScenario {
            scenario_id: "auth-bypass-001".to_string(),
            name: "Authentication Bypass".to_string(),
            description: "Test for authentication bypass vulnerabilities".to_string(),
            attack_type: AttackType::AuthenticationBypass,
            steps: vec![
                AttackStep {
                    step_number: 1,
                    action: "Attempt to access protected resources without authentication".to_string(),
                    payload: None,
                    expected_response: "Access denied".to_string(),
                    actual_response: None,
                    success: None,
                },
            ],
            expected_outcome: "System should deny access".to_string(),
            actual_outcome: None,
            success: None,
        });
    }

    /// Start a new penetration test
    pub fn start_test(&mut self, test_name: String, target_scope: Vec<String>) -> Result<String> {
        let test_id = uuid::Uuid::new_v4().to_string();
        
        let test = PenetrationTest {
            test_id: test_id.clone(),
            test_name,
            target_scope,
            attack_scenarios: self.test_scenarios.clone(),
            started_at: Utc::now(),
            completed_at: None,
            status: TestStatus::Running,
            findings: Vec::new(),
        };

        self.active_tests.insert(test_id.clone(), test);
        Ok(test_id)
    }

    /// Execute penetration test scenarios
    pub async fn execute_test(&mut self, test_id: &str, events: Vec<Event>) -> Result<()> {
        // Create a temporary copy to avoid borrowing issues
        let scenarios = if let Some(test) = self.active_tests.get(test_id) {
            test.attack_scenarios.clone()
        } else {
            return Err(EventualiError::Configuration(format!("Test not found: {test_id}")));
        };

        // Update test status
        if let Some(test) = self.active_tests.get_mut(test_id) {
            test.status = TestStatus::Running;
        }

        // Execute scenarios
        let mut findings = Vec::new();
        for (i, scenario) in scenarios.iter().enumerate() {
            // Simulate scenario execution
            let success = self.execute_scenario(scenario, &events).await?;
            
            // Update scenario success
            if let Some(test) = self.active_tests.get_mut(test_id) {
                if i < test.attack_scenarios.len() {
                    test.attack_scenarios[i].success = Some(success);
                }
            }
            
            if success {
                // Create finding for successful attack
                let finding = PenetrationFinding {
                    finding_id: uuid::Uuid::new_v4().to_string(),
                    scenario_id: scenario.scenario_id.clone(),
                    severity: match scenario.attack_type {
                        AttackType::SqlInjection => VulnerabilitySeverity::High,
                        AttackType::AuthenticationBypass => VulnerabilitySeverity::Critical,
                        AttackType::PrivilegeEscalation => VulnerabilitySeverity::Critical,
                        _ => VulnerabilitySeverity::Medium,
                    },
                    title: format!("Successful {}", scenario.name),
                    description: scenario.description.clone(),
                    attack_vector: format!("{:?}", scenario.attack_type),
                    impact: "System security compromised".to_string(),
                    evidence: scenario.actual_outcome.clone().unwrap_or_default(),
                    remediation: "Implement appropriate security controls".to_string(),
                    exploitability: ExploitabilityLevel::Easy,
                };
                
                findings.push(finding);
            }
        }

        // Update final test state
        if let Some(test) = self.active_tests.get_mut(test_id) {
            test.findings.extend(findings);
            test.status = TestStatus::Completed;
            test.completed_at = Some(Utc::now());
        }
        
        Ok(())
    }

    /// Execute individual scenario
    async fn execute_scenario(&self, scenario: &AttackScenario, _events: &[Event]) -> Result<bool> {
        // In a real implementation, this would:
        // 1. Execute actual attack steps
        // 2. Monitor system responses
        // 3. Determine if attack was successful
        // 4. Collect evidence
        
        // For this implementation, we simulate based on attack type
        match scenario.attack_type {
            AttackType::SqlInjection => {
                // Simulate SQL injection attempt
                // In reality, would test actual database interactions
                Ok(false) // Assume system is protected
            },
            AttackType::AuthenticationBypass => {
                // Simulate authentication bypass attempt
                Ok(false) // Assume system requires proper authentication
            },
            _ => Ok(false), // Default to unsuccessful
        }
    }

    /// Get test results
    pub fn get_test_results(&self, test_id: &str) -> Result<&PenetrationTest> {
        self.active_tests.get(test_id).ok_or_else(|| {
            EventualiError::Configuration(format!("Test not found: {test_id}"))
        })
    }

    /// List all tests
    pub fn list_tests(&self) -> Vec<&PenetrationTest> {
        self.active_tests.values().collect()
    }
}

impl Default for PenetrationTestFramework {
    fn default() -> Self {
        Self::new()
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::{EventData, EventMetadata};
    use uuid::Uuid;

    fn create_test_event_with_data(data: serde_json::Value) -> Event {
        Event {
            id: Uuid::new_v4(),
            aggregate_id: "test-aggregate".to_string(),
            aggregate_type: "TestAggregate".to_string(),
            event_type: "TestEvent".to_string(),
            event_version: 1,
            aggregate_version: 1,
            data: EventData::Json(data),
            metadata: EventMetadata::default(),
            timestamp: Utc::now(),
        }
    }

    #[tokio::test]
    async fn test_vulnerability_scanner_creation() {
        let scanner = VulnerabilityScanner::new();
        assert!(!scanner.scan_rules.is_empty());
        assert_eq!(scanner.severity_thresholds.len(), 5);
    }

    #[tokio::test]
    async fn test_sql_injection_detection() {
        let scanner = VulnerabilityScanner::new();
        
        let malicious_data = serde_json::json!({
            "query": "SELECT * FROM users WHERE id = 1 OR '1'='1"
        });
        let event = create_test_event_with_data(malicious_data);
        
        let result = scanner.scan_events(vec![event]).await.unwrap();
        assert!(!result.vulnerabilities_found.is_empty());
        
        let finding = &result.vulnerabilities_found[0];
        assert_eq!(finding.category, VulnerabilityCategory::InjectionAttack);
        assert_eq!(finding.severity, VulnerabilitySeverity::High);
    }

    #[tokio::test]
    async fn test_pii_detection() {
        let scanner = VulnerabilityScanner::new();
        
        let pii_data = serde_json::json!({
            "user_ssn": "123-45-6789",
            "credit_card": "4111-1111-1111-1111"
        });
        let event = create_test_event_with_data(pii_data);
        
        let result = scanner.scan_events(vec![event]).await.unwrap();
        assert!(!result.vulnerabilities_found.is_empty());
        
        let finding = &result.vulnerabilities_found[0];
        assert_eq!(finding.category, VulnerabilityCategory::DataLeakage);
        assert_eq!(finding.severity, VulnerabilitySeverity::Critical);
    }

    #[tokio::test]
    async fn test_clean_event_no_vulnerabilities() {
        let scanner = VulnerabilityScanner::new();
        
        let clean_data = serde_json::json!({
            "user_action": "login",
            "timestamp": "2023-01-01T00:00:00Z"
        });
        let event = create_test_event_with_data(clean_data);
        
        let result = scanner.scan_events(vec![event]).await.unwrap();
        assert!(result.vulnerabilities_found.is_empty());
        assert_eq!(result.compliance_score, 100.0);
    }

    #[tokio::test]
    async fn test_whitelist_functionality() {
        let mut scanner = VulnerabilityScanner::new();
        scanner.add_to_whitelist("whitelisted-aggregate".to_string());
        
        let malicious_data = serde_json::json!({
            "query": "SELECT * FROM users WHERE id = 1 OR '1'='1"
        });
        let mut event = create_test_event_with_data(malicious_data);
        event.aggregate_id = "whitelisted-aggregate".to_string();
        
        let result = scanner.scan_events(vec![event]).await.unwrap();
        assert!(result.vulnerabilities_found.is_empty());
    }

    #[test]
    fn test_penetration_test_framework() {
        let mut framework = PenetrationTestFramework::new();
        assert!(!framework.test_scenarios.is_empty());
        
        let test_id = framework.start_test(
            "Test Security Assessment".to_string(),
            vec!["test-*".to_string()]
        ).unwrap();
        
        let test = framework.get_test_results(&test_id).unwrap();
        assert_eq!(test.status, TestStatus::Running);
    }

    #[test]
    fn test_compliance_score_calculation() {
        let scanner = VulnerabilityScanner::new();
        
        let mut severity_counts = HashMap::new();
        severity_counts.insert(VulnerabilitySeverity::Critical, 1);
        severity_counts.insert(VulnerabilitySeverity::High, 2);
        
        let score = scanner.calculate_compliance_score(&severity_counts, 100);
        assert!(score < 100.0); // Should be penalized for vulnerabilities
        assert!(score >= 0.0);   // Should not be negative
    }
}