kandil_code 2.1.1

//! Maintenance and Monitoring Module
//!
//! Ongoing maintenance, monitoring, and support for the v2.0 platform

use crate::core::adapters::ai::KandilAI;
use crate::core::agents::ethics_security::Vulnerability;
use anyhow::Result;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::sync::Arc;

#[derive(Debug, Clone)]
pub struct MaintenanceManager {
    pub health_monitor: HealthMonitor,
    pub update_scheduler: UpdateScheduler,
    pub backup_manager: BackupManager,
    pub issue_tracker: IssueTracker,
    pub performance_analyzer: PerformanceAnalyzer,
    pub security_monitor: SecurityMonitor,
    pub ai: Arc<KandilAI>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct HealthMonitor {
    pub checks: Vec<HealthCheck>,
    pub last_check_time: String,
    pub overall_health: HealthStatus,
    pub alert_thresholds: AlertThresholds,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct HealthCheck {
    pub name: String,
    pub status: HealthStatus,
    pub duration_ms: u64,
    pub last_checked: String,
    pub dependencies: Vec<String>,
    pub recovery_instructions: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum HealthStatus {
    Healthy,
    Warning,
    Degraded,
    Unhealthy,
    Unknown,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct AlertThresholds {
    pub response_time_ms: u64,
    pub error_rate_percent: f64,
    pub memory_usage_percent: f64,
    pub cpu_usage_percent: f64,
    pub disk_usage_percent: f64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct UpdateScheduler {
    pub updates: Vec<UpdateInfo>,
    pub schedule: HashMap<String, ScheduleInfo>,
    pub automatic_updates_enabled: bool,
    pub maintenance_windows: Vec<MaintenanceWindow>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct UpdateInfo {
    pub id: String,
    pub version: String,
    pub description: String,
    pub type_of_update: UpdateType,
    pub release_date: String,
    pub severity: UpdateSeverity,
    pub dependencies: Vec<String>,
    pub installation_size_mb: u32,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum UpdateType {
    SecurityPatch,
    BugFix,
    Feature,
    Enhancement,
    Major,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum UpdateSeverity {
    Low,
    Medium,
    High,
    Critical,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ScheduleInfo {
    pub cron_expression: String,
    pub timezone: String,
    pub enabled: bool,
    pub last_run: Option<String>,
    pub next_run: String,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MaintenanceWindow {
    pub start_time: String, // ISO 8601
    pub end_time: String,   // ISO 8601
    pub timezone: String,
    pub recurrence: Recurrence,
    pub allowed_updates: Vec<UpdateType>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Recurrence {
    Daily,
    Weekly,
    Monthly,
    Custom,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BackupManager {
    pub backup_configs: Vec<BackupConfig>,
    pub backup_history: Vec<BackupRecord>,
    pub retention_policy: RetentionPolicy,
    pub backup_success_rate: f64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BackupConfig {
    pub id: String,
    pub name: String,
    pub schedule: ScheduleInfo,
    pub source_paths: Vec<String>,
    pub destination: String,
    pub encryption_enabled: bool,
    pub compression_level: u8, // 0-9
    pub verification_enabled: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BackupRecord {
    pub id: String,
    pub config_id: String,
    pub start_time: String,
    pub end_time: String,
    pub status: BackupStatus,
    pub size_bytes: u64,
    pub encrypted: bool,
    pub verified: bool,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum BackupStatus {
    Success,
    Failed,
    Partial,
    InProgress,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RetentionPolicy {
    pub daily_backups: u32,
    pub weekly_backups: u32,
    pub monthly_backups: u32,
    pub yearly_backups: u32,
    pub retention_period_days: u32,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct IssueTracker {
    pub issues: Vec<Issue>,
    pub categories: Vec<Category>,
    pub priorities: Vec<Priority>,
    pub statuses: Vec<Status>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Issue {
    pub id: String,
    pub title: String,
    pub description: String,
    pub category: Category,
    pub priority: Priority,
    pub status: Status,
    pub assignee: Option<String>,
    pub reporter: String,
    pub created_at: String,
    pub updated_at: String,
    pub estimated_hours: Option<u32>,
    pub actual_hours: Option<u32>,
    pub related_tickets: Vec<String>,
    pub resolution: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Category {
    Bug,
    Feature,
    Improvement,
    Task,
    Epic,
    Story,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Priority {
    Low,
    Medium,
    High,
    Critical,
    Blocker,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum Status {
    Open,
    InProgress,
    InReview,
    Resolved,
    Closed,
    Reopened,
    WontFix,
    Duplicate,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceAnalyzer {
    pub metrics: Vec<PerformanceMetric>,
    pub baselines: Vec<PerformanceBaseline>,
    pub trends: PerformanceTrends,
    pub alerts: Vec<PerformanceAlert>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceMetric {
    pub name: String,
    pub current_value: f64,
    pub units: String,
    pub timestamp: String,
    pub source: String,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceBaseline {
    pub metric_name: String,
    pub baseline_value: f64,
    pub tolerance_percent: f64,
    pub seasonality: Option<Seasonality>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Seasonality {
    pub pattern: SeasonalPattern,
    pub period_days: u32,
    pub amplitude_factor: f64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum SeasonalPattern {
    Daily,
    Weekly,
    Monthly,
    Quarterly,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceTrends {
    pub short_term: HashMap<String, TrendDirection>,
    pub long_term: HashMap<String, TrendDirection>,
    pub seasonality_detected: bool,
    pub anomaly_count: u32,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum TrendDirection {
    Increasing,
    Decreasing,
    Stable,
    Volatile,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceAlert {
    pub metric_name: String,
    pub threshold_value: f64,
    pub actual_value: f64,
    pub severity: Priority,
    pub timestamp: String,
    pub acknowledged: bool,
    pub acknowledged_by: Option<String>,
    pub actions_taken: Vec<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityMonitor {
    pub scans: Vec<SecurityScan>,
    pub vulnerabilities: Vec<Vulnerability>,
    pub compliance_checks: Vec<ComplianceCheck>,
    pub threat_intelligence: ThreatIntelligence,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityScan {
    pub id: String,
    pub type_of_scan: ScanType,
    pub status: ScanStatus,
    pub start_time: String,
    pub end_time: String,
    pub findings: Vec<SecurityFinding>,
    pub critical_findings: u32,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ScanType {
    Vulnerability,
    Configuration,
    Network,
    Code,
    Dependency,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ScanStatus {
    NotStarted,
    InProgress,
    Completed,
    Failed,
    Cancelled,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SecurityFinding {
    pub id: String,
    pub severity: Priority,
    pub title: String,
    pub description: String,
    pub remediation: String,
    pub cvss_score: Option<f64>,
    pub cve_id: Option<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ComplianceCheck {
    pub standard: String,
    pub status: ComplianceStatus,
    pub last_checked: String,
    pub next_check: String,
    /// Percentage of requirements met
    pub compliance_percentage: f64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum ComplianceStatus {
    Compliant,
    NonCompliant,
    PartiallyCompliant,
    NotApplicable,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatIntelligence {
    pub feed_sources: Vec<String>,
    pub last_update: String,
    pub indicators: Vec<ThreatIndicator>,
    pub intelligence_level: IntelligenceLevel,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ThreatIndicator {
    pub indicator: String,
    pub type_of_indicator: IndicatorType,
    pub severity: Priority,
    pub confidence: u8, // 0-100
    pub last_seen: String,
    pub tags: Vec<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum IndicatorType {
    IpAddress,
    Domain,
    Url,
    Hash,
    File,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum IntelligenceLevel {
    Basic,
    Standard,
    Premium,
    Custom,
}

impl MaintenanceManager {
    pub fn new(ai: Arc<KandilAI>) -> Self {
        Self {
            health_monitor: HealthMonitor {
                checks: vec![],
                last_check_time: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                overall_health: HealthStatus::Healthy,
                alert_thresholds: AlertThresholds {
                    response_time_ms: 1000,
                    error_rate_percent: 1.0,
                    memory_usage_percent: 85.0,
                    cpu_usage_percent: 80.0,
                    disk_usage_percent: 90.0,
                },
            },
            update_scheduler: UpdateScheduler {
                updates: vec![],
                schedule: HashMap::new(),
                automatic_updates_enabled: true,
                maintenance_windows: vec![MaintenanceWindow {
                    start_time: "2024-01-01T02:00:00Z".to_string(),
                    end_time: "2024-01-01T04:00:00Z".to_string(),
                    timezone: "UTC".to_string(),
                    recurrence: Recurrence::Weekly,
                    allowed_updates: vec![UpdateType::BugFix, UpdateType::SecurityPatch],
                }],
            },
            backup_manager: BackupManager {
                backup_configs: vec![],
                backup_history: vec![],
                retention_policy: RetentionPolicy {
                    daily_backups: 7,
                    weekly_backups: 4,
                    monthly_backups: 12,
                    yearly_backups: 5,
                    retention_period_days: 1825, // 5 years
                },
                backup_success_rate: 99.5,
            },
            issue_tracker: IssueTracker {
                issues: vec![],
                categories: vec![],
                priorities: vec![],
                statuses: vec![],
            },
            performance_analyzer: PerformanceAnalyzer {
                metrics: vec![],
                baselines: vec![],
                trends: PerformanceTrends {
                    short_term: HashMap::new(),
                    long_term: HashMap::new(),
                    seasonality_detected: false,
                    anomaly_count: 0,
                },
                alerts: vec![],
            },
            security_monitor: SecurityMonitor {
                scans: vec![],
                vulnerabilities: vec![],
                compliance_checks: vec![],
                threat_intelligence: ThreatIntelligence {
                    feed_sources: vec![
                        "NVD".to_string(),
                        "OSV".to_string(),
                        "Vendor feeds".to_string(),
                    ],
                    last_update: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                    indicators: vec![],
                    intelligence_level: IntelligenceLevel::Standard,
                },
            },
            ai,
        }
    }

    pub async fn run_health_checks(&mut self, system_name: &str) -> Result<()> {
        println!("Running system health checks for {}...", system_name);

        // In a real implementation, this would check actual system components
        // For simulation, we'll add mock checks
        self.health_monitor.checks = vec![
            HealthCheck {
                name: "Database Connection".to_string(),
                status: HealthStatus::Healthy,
                duration_ms: 15,
                last_checked: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                dependencies: vec!["PostgreSQL".to_string()],
                recovery_instructions: Some(
                    "Check database connectivity and credentials".to_string(),
                ),
            },
            HealthCheck {
                name: "AI Service Availability".to_string(),
                status: HealthStatus::Healthy,
                duration_ms: 42,
                last_checked: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                dependencies: vec!["Ollama".to_string(), "Cloud API".to_string()],
                recovery_instructions: Some(
                    "Verify AI service is running and API keys are valid".to_string(),
                ),
            },
            HealthCheck {
                name: "File System Access".to_string(),
                status: HealthStatus::Healthy,
                duration_ms: 8,
                last_checked: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                dependencies: vec!["Disk I/O".to_string()],
                recovery_instructions: Some("Check disk space and permissions".to_string()),
            },
        ];

        // Determine overall health based on individual checks
        let unhealthy_count = self
            .health_monitor
            .checks
            .iter()
            .filter(|c| matches!(c.status, HealthStatus::Unhealthy | HealthStatus::Degraded))
            .count();

        self.health_monitor.overall_health = if unhealthy_count > 0 {
            if unhealthy_count > self.health_monitor.checks.len() / 2 {
                HealthStatus::Unhealthy
            } else {
                HealthStatus::Degraded
            }
        } else {
            HealthStatus::Healthy
        };

        self.health_monitor.last_check_time =
            chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string();

        println!(
            "✓ Health checks completed. Overall status: {:?}",
            self.health_monitor.overall_health
        );

        Ok(())
    }

    pub async fn schedule_update(&mut self, update: UpdateInfo) -> Result<()> {
        self.update_scheduler.updates.push(update);
        Ok(())
    }

    pub async fn run_performance_analysis(&mut self) -> Result<()> {
        println!("Running performance analysis...");

        // In a real implementation, this would collect actual performance metrics
        // For simulation, we'll add mock metrics
        self.performance_analyzer.metrics = vec![
            PerformanceMetric {
                name: "response_time_avg".to_string(),
                current_value: 420.5,
                units: "milliseconds".to_string(),
                timestamp: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                source: "metrics_collector".to_string(),
            },
            PerformanceMetric {
                name: "cpu_usage".to_string(),
                current_value: 25.3,
                units: "percentage".to_string(),
                timestamp: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                source: "system_monitor".to_string(),
            },
            PerformanceMetric {
                name: "memory_usage".to_string(),
                current_value: 68.2,
                units: "percentage".to_string(),
                timestamp: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
                source: "system_monitor".to_string(),
            },
        ];

        // Analyze trends
        for metric in &self.performance_analyzer.metrics {
            let trend = if metric.current_value > 75.0 {
                TrendDirection::Increasing
            } else if metric.current_value < 25.0 {
                TrendDirection::Decreasing
            } else {
                TrendDirection::Stable
            };

            self.performance_analyzer
                .trends
                .short_term
                .insert(metric.name.clone(), trend);
        }

        println!("✓ Performance analysis completed");
        Ok(())
    }

    pub async fn run_security_scan(&mut self) -> Result<()> {
        println!("Running security scan...");

        // In a real implementation, this would run actual security scanning tools
        // For simulation, add mock scan results
        let scan = SecurityScan {
            id: format!("scan-{}", uuid::Uuid::new_v4()),
            type_of_scan: ScanType::Vulnerability,
            status: ScanStatus::Completed,
            start_time: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
            end_time: chrono::Utc::now().format("%Y-%m-%dT%H:%M:%SZ").to_string(),
            findings: vec![SecurityFinding {
                id: "SEC-FINDING-001".to_string(),
                severity: Priority::Medium,
                title: "Outdated dependency".to_string(),
                description: "Dependency 'old-lib' version 1.2.3 has known vulnerabilities"
                    .to_string(),
                remediation: "Update to version 1.3.5 or higher".to_string(),
                cvss_score: Some(6.5),
                cve_id: Some("CVE-2023-1234".to_string()),
            }],
            critical_findings: 0,
        };

        self.security_monitor.scans.push(scan);

        // Update vulnerabilities list
        self.security_monitor.vulnerabilities = vec![Vulnerability {
            id: "CVE-2023-1234".to_string(),
            title: "Outdated dependency vulnerability".to_string(),
            description: "Dependency 'old-lib' version 1.2.3 has known vulnerabilities".to_string(),
            severity: crate::core::agents::ethics_security::Severity::Medium,
            cve_id: Some("CVE-2023-1234".to_string()),
            owasp_category: Some("A06:2021-Vulnerable and Outdated Components".to_string()),
            recommendation: "Update to version 1.3.5 or higher".to_string(),
            cvss_score: Some(7.5),
        }];

        println!("✓ Security scan completed");
        Ok(())
    }

    pub async fn generate_maintenance_report(&self) -> String {
        format!(
            r#"# Maintenance Report - Kandil Code v2.0

## Health Status
- Overall Health: {:?}
- Checks Performed: {}
- Unhealthy Components: {}

## Updates
- Scheduled Updates: {}
- Automatic Updates: {}

## Performance
- Average Response Time: {:.2}ms
- CPU Usage: {:.2}%
- Memory Usage: {:.2}%

## Security
- Recent Scans: {}
- Critical Findings: {}
- Known Vulnerabilities: {}

## Backups
- Success Rate: {:.2}%
- Active Configs: {}
- Retention Policy: {} daily, {} weekly, {} monthly, {} yearly backups

## Issues Tracked
- Total Issues: {}
- Open Issues: {}

"#,
            self.health_monitor.overall_health,
            self.health_monitor.checks.len(),
            self.health_monitor
                .checks
                .iter()
                .filter(|c| matches!(c.status, HealthStatus::Unhealthy | HealthStatus::Degraded))
                .count(),
            self.update_scheduler.updates.len(),
            self.update_scheduler.automatic_updates_enabled,
            self.performance_analyzer
                .metrics
                .iter()
                .find(|m| m.name == "response_time_avg")
                .map(|m| m.current_value)
                .unwrap_or(0.0),
            self.performance_analyzer
                .metrics
                .iter()
                .find(|m| m.name == "cpu_usage")
                .map(|m| m.current_value)
                .unwrap_or(0.0),
            self.performance_analyzer
                .metrics
                .iter()
                .find(|m| m.name == "memory_usage")
                .map(|m| m.current_value)
                .unwrap_or(0.0),
            self.security_monitor.scans.len(),
            self.security_monitor
                .scans
                .iter()
                .map(|s| s.critical_findings)
                .sum::<u32>(),
            self.security_monitor.vulnerabilities.len(),
            self.backup_manager.backup_success_rate,
            self.backup_manager.backup_configs.len(),
            self.backup_manager.retention_policy.daily_backups,
            self.backup_manager.retention_policy.weekly_backups,
            self.backup_manager.retention_policy.monthly_backups,
            self.backup_manager.retention_policy.yearly_backups,
            self.issue_tracker.issues.len(),
            self.issue_tracker
                .issues
                .iter()
                .filter(|i| matches!(i.status, Status::Open))
                .count()
        )
    }

    pub fn is_system_ready(&self) -> bool {
        // System is considered ready if:
        // - Overall health is healthy or warning
        // - Less than 10% of performance metrics indicate issues
        // - No critical security vulnerabilities
        // - Less than 5% of scheduled backups have failed

        let health_ok = matches!(
            self.health_monitor.overall_health,
            HealthStatus::Healthy | HealthStatus::Warning
        );
        let performance_ok = true; // Simplified check
        let security_ok = self
            .security_monitor
            .vulnerabilities
            .iter()
            .any(|v| v.severity == crate::core::agents::ethics_security::Severity::Critical)
            == false;
        let backup_ok = self.backup_manager.backup_success_rate >= 95.0;

        health_ok && performance_ok && security_ok && backup_ok
    }
}