quantrs2-device 0.1.3

//! Algorithm Validation Service
//!
//! This module provides comprehensive validation services for quantum algorithms
//! including code quality checks, security scanning, and performance validation.

use super::*;

/// Algorithm validation service
pub struct AlgorithmValidationService {
    config: ValidationConfig,
    validators: Vec<Box<dyn AlgorithmValidator + Send + Sync>>,
    security_scanner: SecurityScanner,
    quality_analyzer: QualityAnalyzer,
}

/// Validation configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ValidationConfig {
    pub enabled: bool,
    pub strict_mode: bool,
    pub security_scanning: bool,
    pub performance_validation: bool,
    pub code_quality_checks: bool,
    pub documentation_requirements: bool,
    pub test_coverage_threshold: f64,
}

/// Algorithm validator trait
pub trait AlgorithmValidator {
    fn validate(&self, algorithm: &AlgorithmRegistration) -> DeviceResult<ValidationResult>;
    fn get_validator_name(&self) -> String;
}

/// Validation result
#[derive(Debug, Clone)]
pub struct ValidationResult {
    pub passed: bool,
    pub score: f64,
    pub issues: Vec<ValidationIssue>,
    pub recommendations: Vec<ValidationRecommendation>,
    pub validation_metadata: HashMap<String, String>,
}

/// Validation issue
#[derive(Debug, Clone)]
pub struct ValidationIssue {
    pub issue_type: IssueType,
    pub severity: IssueSeverity,
    pub description: String,
    pub location: Option<CodeLocation>,
    pub suggested_fix: Option<String>,
}

/// Issue types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum IssueType {
    SyntaxError,
    SecurityVulnerability,
    PerformanceIssue,
    QualityIssue,
    DocumentationIssue,
    TestingIssue,
    ComplianceIssue,
}

/// Issue severity levels
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum IssueSeverity {
    Critical,
    High,
    Medium,
    Low,
    Info,
}

/// Recommendation types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum RecommendationType {
    Security,
    Performance,
    Quality,
    Documentation,
    Testing,
    Refactoring,
    Optimization,
}

/// Code location
#[derive(Debug, Clone)]
pub struct CodeLocation {
    pub file: String,
    pub line: usize,
    pub column: Option<usize>,
}

/// Validation recommendation
#[derive(Debug, Clone)]
pub struct ValidationRecommendation {
    pub recommendation_type: RecommendationType,
    pub description: String,
    pub priority: RecommendationPriority,
    pub estimated_effort: Duration,
}

/// Recommendation priority
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum RecommendationPriority {
    Low,
    Medium,
    High,
    Critical,
}

/// Security scanner
pub struct SecurityScanner {
    scan_rules: Vec<SecurityRule>,
    vulnerability_database: VulnerabilityDatabase,
    scan_results_cache: HashMap<String, SecurityScanResult>,
}

/// Security rule
#[derive(Debug, Clone)]
pub struct SecurityRule {
    pub rule_id: String,
    pub rule_type: SecurityRuleType,
    pub pattern: String,
    pub severity: IssueSeverity,
    pub description: String,
}

/// Security rule types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum SecurityRuleType {
    CodeInjection,
    DataExposure,
    UnsafeOperations,
    DependencyVulnerability,
    ConfigurationIssue,
}

/// Vulnerability database
#[derive(Debug)]
pub struct VulnerabilityDatabase {
    known_vulnerabilities: HashMap<String, Vulnerability>,
    cve_database: HashMap<String, CVEEntry>,
}

/// Vulnerability
#[derive(Debug, Clone)]
pub struct Vulnerability {
    pub vulnerability_id: String,
    pub severity: VulnerabilitySeverity,
    pub description: String,
    pub affected_versions: Vec<String>,
    pub fix_versions: Vec<String>,
    pub workarounds: Vec<String>,
}

/// Vulnerability severity
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum VulnerabilitySeverity {
    Low,
    Medium,
    High,
    Critical,
}

/// CVE entry
#[derive(Debug, Clone)]
pub struct CVEEntry {
    pub cve_id: String,
    pub cvss_score: f64,
    pub description: String,
    pub published_date: SystemTime,
    pub affected_products: Vec<String>,
}

/// Security scan result
#[derive(Debug, Clone)]
pub struct SecurityScanResult {
    pub scan_id: String,
    pub algorithm_id: String,
    pub scan_timestamp: SystemTime,
    pub vulnerabilities_found: Vec<SecurityVulnerability>,
    pub risk_score: f64,
    pub scan_coverage: f64,
}

/// Security vulnerability
#[derive(Debug, Clone)]
pub struct SecurityVulnerability {
    pub vulnerability_type: VulnerabilityType,
    pub severity: VulnerabilitySeverity,
    pub location: CodeLocation,
    pub description: String,
    pub remediation: String,
}

/// Vulnerability types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum VulnerabilityType {
    BufferOverflow,
    SqlInjection,
    CrossSiteScripting,
    PathTraversal,
    InsecureDeserialization,
    WeakCryptography,
    HardcodedCredentials,
}

/// Quality analyzer
pub struct QualityAnalyzer {
    quality_metrics: Vec<QualityMetric>,
    analysis_tools: Vec<Box<dyn QualityAnalysisTool + Send + Sync>>,
    quality_standards: QualityStandards,
}

/// Quality metric
#[derive(Debug, Clone)]
pub struct QualityMetric {
    pub metric_name: String,
    pub metric_type: QualityMetricType,
    pub weight: f64,
    pub threshold: f64,
    pub description: String,
}

/// Quality metric types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum QualityMetricType {
    Complexity,
    Maintainability,
    Readability,
    Testability,
    Documentation,
    Performance,
}

/// Quality analysis tool trait
pub trait QualityAnalysisTool {
    fn analyze(&self, code: &AlgorithmCode) -> DeviceResult<QualityAnalysisResult>;
    fn get_tool_name(&self) -> String;
}

/// Quality analysis result
#[derive(Debug, Clone)]
pub struct QualityAnalysisResult {
    pub overall_score: f64,
    pub metric_scores: HashMap<String, f64>,
    pub quality_issues: Vec<QualityIssue>,
    pub improvement_suggestions: Vec<ImprovementSuggestion>,
}

/// Quality issue
#[derive(Debug, Clone)]
pub struct QualityIssue {
    pub issue_category: QualityIssueCategory,
    pub severity: IssueSeverity,
    pub description: String,
    pub location: CodeLocation,
    pub impact: String,
}

/// Quality issue categories
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum QualityIssueCategory {
    CodeSmell,
    AntiPattern,
    PerformanceBug,
    MaintainabilityIssue,
    ReadabilityIssue,
    TestingGap,
}

/// Improvement suggestion
#[derive(Debug, Clone)]
pub struct ImprovementSuggestion {
    pub suggestion_type: ImprovementType,
    pub description: String,
    pub expected_benefit: String,
    pub implementation_difficulty: ImplementationDifficulty,
}

/// Improvement types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ImprovementType {
    Refactoring,
    Optimization,
    Documentation,
    Testing,
    Architecture,
}

/// Implementation difficulty
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ImplementationDifficulty {
    Trivial,
    Easy,
    Moderate,
    Hard,
    VeryHard,
}

/// Quality standards
#[derive(Debug, Clone)]
pub struct QualityStandards {
    pub coding_standards: CodingStandards,
    pub documentation_standards: DocumentationStandards,
    pub testing_standards: TestingStandards,
    pub performance_standards: PerformanceStandards,
}

/// Coding standards
#[derive(Debug, Clone)]
pub struct CodingStandards {
    pub style_guide: String,
    pub naming_conventions: HashMap<String, String>,
    pub complexity_limits: HashMap<String, usize>,
    pub file_organization: FileOrganizationRules,
}

/// File organization rules
#[derive(Debug, Clone)]
pub struct FileOrganizationRules {
    pub max_file_size: usize,
    pub max_function_size: usize,
    pub max_class_size: usize,
    pub module_structure: Vec<String>,
}

/// Documentation standards
#[derive(Debug, Clone)]
pub struct DocumentationStandards {
    pub required_sections: Vec<String>,
    pub min_coverage: f64,
    pub documentation_format: String,
    pub example_requirements: ExampleRequirements,
}

/// Example requirements
#[derive(Debug, Clone)]
pub struct ExampleRequirements {
    pub min_examples: usize,
    pub example_complexity: Vec<ExampleComplexity>,
    pub working_examples_required: bool,
    pub performance_examples: bool,
}

/// Testing standards
#[derive(Debug, Clone)]
pub struct TestingStandards {
    pub min_test_coverage: f64,
    pub required_test_types: Vec<TestType>,
    pub test_quality_requirements: TestQualityRequirements,
    pub continuous_testing: bool,
}

/// Test types
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum TestType {
    Unit,
    Integration,
    Performance,
    Security,
    Acceptance,
    Regression,
}

/// Test quality requirements
#[derive(Debug, Clone)]
pub struct TestQualityRequirements {
    pub assertion_density: f64,
    pub test_independence: bool,
    pub deterministic_tests: bool,
    pub test_documentation: bool,
}

/// Performance standards
#[derive(Debug, Clone)]
pub struct PerformanceStandards {
    pub execution_time_limits: HashMap<String, Duration>,
    pub memory_usage_limits: HashMap<String, usize>,
    pub resource_efficiency_thresholds: HashMap<String, f64>,
    pub scalability_requirements: ScalabilityRequirements,
}

/// Scalability requirements
#[derive(Debug, Clone)]
pub struct ScalabilityRequirements {
    pub max_problem_size: usize,
    pub scaling_behavior: ScalingBehavior,
    pub resource_scaling: ResourceScaling,
}

/// Scaling behavior
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ScalingBehavior {
    Constant,
    Logarithmic,
    Linear,
    Quadratic,
    Exponential,
    Custom(String),
}

/// Resource scaling
#[derive(Debug, Clone)]
pub struct ResourceScaling {
    pub cpu_scaling: ScalingBehavior,
    pub memory_scaling: ScalingBehavior,
    pub quantum_resource_scaling: ScalingBehavior,
    pub network_scaling: ScalingBehavior,
}

impl AlgorithmValidationService {
    /// Create a new validation service
    pub fn new(config: &ValidationConfig) -> DeviceResult<Self> {
        Ok(Self {
            config: config.clone(),
            validators: vec![],
            security_scanner: SecurityScanner::new()?,
            quality_analyzer: QualityAnalyzer::new()?,
        })
    }

    /// Initialize the validation service
    pub async fn initialize(&self) -> DeviceResult<()> {
        // Initialize validation components
        Ok(())
    }

    /// Validate an algorithm
    pub async fn validate_algorithm(
        &self,
        algorithm: &AlgorithmRegistration,
    ) -> DeviceResult<ValidationResult> {
        let mut issues = Vec::new();
        let mut recommendations = Vec::new();
        let mut total_score = 0.0;
        let mut validator_count = 0;

        // Run all validators
        for validator in &self.validators {
            match validator.validate(algorithm) {
                Ok(result) => {
                    total_score += result.score;
                    validator_count += 1;
                    issues.extend(result.issues);
                    recommendations.extend(result.recommendations);
                }
                Err(e) => {
                    issues.push(ValidationIssue {
                        issue_type: IssueType::QualityIssue,
                        severity: IssueSeverity::Medium,
                        description: format!("Validator error: {e}"),
                        location: None,
                        suggested_fix: None,
                    });
                }
            }
        }

        let average_score = if validator_count > 0 {
            total_score / validator_count as f64
        } else {
            0.0
        };

        let passed =
            average_score >= 0.7 && !issues.iter().any(|i| i.severity == IssueSeverity::Critical);

        Ok(ValidationResult {
            passed,
            score: average_score,
            issues,
            recommendations,
            validation_metadata: HashMap::new(),
        })
    }
}

impl SecurityScanner {
    fn new() -> DeviceResult<Self> {
        Ok(Self {
            scan_rules: vec![],
            vulnerability_database: VulnerabilityDatabase::new(),
            scan_results_cache: HashMap::new(),
        })
    }
}

impl VulnerabilityDatabase {
    fn new() -> Self {
        Self {
            known_vulnerabilities: HashMap::new(),
            cve_database: HashMap::new(),
        }
    }
}

impl QualityAnalyzer {
    fn new() -> DeviceResult<Self> {
        Ok(Self {
            quality_metrics: vec![],
            analysis_tools: vec![],
            quality_standards: QualityStandards::default(),
        })
    }
}

impl Default for ValidationConfig {
    fn default() -> Self {
        Self {
            enabled: true,
            strict_mode: false,
            security_scanning: true,
            performance_validation: true,
            code_quality_checks: true,
            documentation_requirements: true,
            test_coverage_threshold: 0.8,
        }
    }
}

impl Default for QualityStandards {
    fn default() -> Self {
        Self {
            coding_standards: CodingStandards {
                style_guide: "PEP8".to_string(),
                naming_conventions: HashMap::new(),
                complexity_limits: HashMap::new(),
                file_organization: FileOrganizationRules {
                    max_file_size: 1000,
                    max_function_size: 50,
                    max_class_size: 500,
                    module_structure: vec![],
                },
            },
            documentation_standards: DocumentationStandards {
                required_sections: vec!["README".to_string(), "API".to_string()],
                min_coverage: 0.8,
                documentation_format: "Markdown".to_string(),
                example_requirements: ExampleRequirements {
                    min_examples: 3,
                    example_complexity: vec![
                        ExampleComplexity::Beginner,
                        ExampleComplexity::Intermediate,
                    ],
                    working_examples_required: true,
                    performance_examples: false,
                },
            },
            testing_standards: TestingStandards {
                min_test_coverage: 0.8,
                required_test_types: vec![TestType::Unit, TestType::Integration],
                test_quality_requirements: TestQualityRequirements {
                    assertion_density: 0.7,
                    test_independence: true,
                    deterministic_tests: true,
                    test_documentation: false,
                },
                continuous_testing: false,
            },
            performance_standards: PerformanceStandards {
                execution_time_limits: HashMap::new(),
                memory_usage_limits: HashMap::new(),
                resource_efficiency_thresholds: HashMap::new(),
                scalability_requirements: ScalabilityRequirements {
                    max_problem_size: 1000,
                    scaling_behavior: ScalingBehavior::Quadratic,
                    resource_scaling: ResourceScaling {
                        cpu_scaling: ScalingBehavior::Linear,
                        memory_scaling: ScalingBehavior::Linear,
                        quantum_resource_scaling: ScalingBehavior::Linear,
                        network_scaling: ScalingBehavior::Constant,
                    },
                },
            },
        }
    }
}