#!/usr/bin/env python3
"""
Enterprise Audit Integration Framework - Comprehensive Compliance Tracking

This module provides enterprise-grade audit integration across all CloudOps modules,
enabling comprehensive compliance tracking, regulatory reporting, and governance.

Features:
- Real-time audit trail generation across all modules
- Multi-framework compliance support (SOC2, PCI-DSS, HIPAA, AWS Well-Architected)
- Executive-ready reporting with business impact analysis
- Cross-module audit correlation and analysis
- Automated compliance validation and gap analysis

Modules Integrated:
- inventory: Resource discovery audit trails
- operate: Operational change audit trails
- security: Security findings and remediation audit trails
- cfat: Cloud foundations assessment audit trails
- vpc: Network configuration audit trails
- remediation: Security remediation audit trails
- finops: Cost optimization audit trails

Author: Runbooks Team
Version: 0.8.0
Architecture: Phase 4 Multi-Module Integration - Enterprise Audit Framework
"""

import asyncio
import time
from dataclasses import dataclass, field
from datetime import datetime, timedelta
from enum import Enum
from typing import Any, Dict, List, Optional, Tuple, Union

from runbooks.common.cross_module_integration import DataFlowType, EnterpriseCrossModuleIntegrator
from runbooks.common.mcp_integration import EnterpriseMCPIntegrator, MCPValidationResult
from runbooks.common.rich_utils import (
    console,
    create_panel,
    create_table,
    format_cost,
    print_error,
    print_info,
    print_success,
    print_warning,
)


class ComplianceFramework(Enum):
    """Supported compliance frameworks."""

    SOC2 = "soc2"
    PCI_DSS = "pci_dss"
    HIPAA = "hipaa"
    AWS_WELL_ARCHITECTED = "aws_well_architected"
    ISO27001 = "iso27001"
    GDPR = "gdpr"
    CUSTOM = "custom"


class AuditSeverity(Enum):
    """Audit event severity levels."""

    CRITICAL = "critical"
    HIGH = "high"
    MEDIUM = "medium"
    LOW = "low"
    INFORMATIONAL = "informational"


@dataclass
class AuditEvent:
    """Individual audit event record."""

    timestamp: str
    module: str
    event_type: str
    severity: AuditSeverity
    resource_id: Optional[str]
    account_id: Optional[str]
    region: Optional[str]
    user_profile: Optional[str]
    description: str
    compliance_frameworks: List[ComplianceFramework] = field(default_factory=list)
    metadata: Dict[str, Any] = field(default_factory=dict)
    correlation_id: Optional[str] = None

    def to_dict(self) -> Dict[str, Any]:
        """Convert audit event to dictionary."""
        return {
            "timestamp": self.timestamp,
            "module": self.module,
            "event_type": self.event_type,
            "severity": self.severity.value,
            "resource_id": self.resource_id,
            "account_id": self.account_id,
            "region": self.region,
            "user_profile": self.user_profile,
            "description": self.description,
            "compliance_frameworks": [f.value for f in self.compliance_frameworks],
            "metadata": self.metadata,
            "correlation_id": self.correlation_id,
        }


@dataclass
class ComplianceReport:
    """Comprehensive compliance report."""

    report_timestamp: str
    frameworks_assessed: List[ComplianceFramework]
    total_events: int
    events_by_severity: Dict[str, int]
    events_by_module: Dict[str, int]
    compliance_score: float
    critical_findings: List[AuditEvent]
    recommendations: List[str]
    business_impact_analysis: Dict[str, Any] = field(default_factory=dict)
    audit_trail_summary: Dict[str, Any] = field(default_factory=dict)


class EnterpriseAuditIntegrator:
    """
    Enterprise audit integration framework for comprehensive compliance tracking.

    Provides real-time audit trail generation, compliance validation, and
    executive-ready reporting across all CloudOps modules.
    """

    def __init__(
        self, user_profile: Optional[str] = None, compliance_frameworks: Optional[List[ComplianceFramework]] = None
    ):
        """
        Initialize enterprise audit integrator.

        Args:
            user_profile: User profile for audit attribution
            compliance_frameworks: List of compliance frameworks to assess
        """
        self.user_profile = user_profile
        self.compliance_frameworks = compliance_frameworks or [
            ComplianceFramework.SOC2,
            ComplianceFramework.AWS_WELL_ARCHITECTED,
            ComplianceFramework.ISO27001,
        ]

        # Initialize integrators
        self.mcp_integrator = EnterpriseMCPIntegrator(user_profile)
        self.cross_module_integrator = EnterpriseCrossModuleIntegrator(user_profile)

        # Audit storage
        self.audit_events: List[AuditEvent] = []
        self.compliance_history: List[ComplianceReport] = []

        # Performance tracking
        self.start_time = time.time()

        print_info(
            f"Enterprise audit integrator initialized for {len(self.compliance_frameworks)} compliance frameworks"
        )

    def record_audit_event(
        self,
        module: str,
        event_type: str,
        description: str,
        severity: AuditSeverity = AuditSeverity.INFORMATIONAL,
        resource_id: Optional[str] = None,
        account_id: Optional[str] = None,
        region: Optional[str] = None,
        metadata: Optional[Dict[str, Any]] = None,
        correlation_id: Optional[str] = None,
    ) -> AuditEvent:
        """
        Record a new audit event.

        Args:
            module: Source module name
            event_type: Type of audit event
            description: Human-readable description
            severity: Event severity level
            resource_id: Associated AWS resource ID
            account_id: AWS account ID
            region: AWS region
            metadata: Additional metadata
            correlation_id: Correlation ID for related events

        Returns:
            Created audit event
        """
        # Determine applicable compliance frameworks
        applicable_frameworks = self._determine_applicable_frameworks(event_type, module)

        audit_event = AuditEvent(
            timestamp=datetime.now().isoformat(),
            module=module,
            event_type=event_type,
            severity=severity,
            resource_id=resource_id,
            account_id=account_id,
            region=region,
            user_profile=self.user_profile,
            description=description,
            compliance_frameworks=applicable_frameworks,
            metadata=metadata or {},
            correlation_id=correlation_id,
        )

        self.audit_events.append(audit_event)

        # Log critical events immediately
        if severity in [AuditSeverity.CRITICAL, AuditSeverity.HIGH]:
            print_warning(f"🚨 {severity.value.upper()} audit event: {description}")

        return audit_event

    async def generate_comprehensive_compliance_report(
        self, time_period_days: int = 30, include_business_impact: bool = True
    ) -> ComplianceReport:
        """
        Generate comprehensive compliance report across all modules.

        Args:
            time_period_days: Number of days to include in report
            include_business_impact: Whether to include business impact analysis

        Returns:
            Comprehensive compliance report
        """
        print_info(f"Generating comprehensive compliance report for {time_period_days} days")

        # Filter events by time period
        cutoff_date = datetime.now() - timedelta(days=time_period_days)
        recent_events = [event for event in self.audit_events if datetime.fromisoformat(event.timestamp) >= cutoff_date]

        # Analyze events by severity
        events_by_severity = {}
        for severity in AuditSeverity:
            events_by_severity[severity.value] = len([e for e in recent_events if e.severity == severity])

        # Analyze events by module
        events_by_module = {}
        for event in recent_events:
            events_by_module[event.module] = events_by_module.get(event.module, 0) + 1

        # Calculate compliance score
        compliance_score = self._calculate_compliance_score(recent_events)

        # Identify critical findings
        critical_findings = [
            event for event in recent_events if event.severity in [AuditSeverity.CRITICAL, AuditSeverity.HIGH]
        ]

        # Generate recommendations
        recommendations = self._generate_compliance_recommendations(recent_events, critical_findings)

        # Business impact analysis
        business_impact = {}
        if include_business_impact:
            business_impact = await self._analyze_business_impact(recent_events)

        # Create compliance report
        report = ComplianceReport(
            report_timestamp=datetime.now().isoformat(),
            frameworks_assessed=self.compliance_frameworks,
            total_events=len(recent_events),
            events_by_severity=events_by_severity,
            events_by_module=events_by_module,
            compliance_score=compliance_score,
            critical_findings=critical_findings,
            recommendations=recommendations,
            business_impact_analysis=business_impact,
            audit_trail_summary=self._generate_audit_trail_summary(recent_events),
        )

        # Store in history
        self.compliance_history.append(report)

        print_success(
            f"Compliance report generated: {compliance_score:.1f}% compliance score with {len(critical_findings)} critical findings"
        )

        return report

    async def audit_inventory_operations(self, inventory_results: Dict[str, Any]) -> List[AuditEvent]:
        """
        Generate audit events for inventory operations.

        Args:
            inventory_results: Results from inventory collection

        Returns:
            List of generated audit events
        """
        audit_events = []

        # Record inventory discovery event
        total_resources = inventory_results.get("summary", {}).get("total_resources", 0)
        accounts_scanned = len(inventory_results.get("metadata", {}).get("account_ids", []))

        audit_event = self.record_audit_event(
            module="inventory",
            event_type="resource_discovery",
            description=f"Discovered {total_resources} resources across {accounts_scanned} accounts",
            severity=AuditSeverity.INFORMATIONAL,
            metadata={
                "total_resources": total_resources,
                "accounts_scanned": accounts_scanned,
                "resource_types": inventory_results.get("metadata", {}).get("resource_types", []),
            },
        )
        audit_events.append(audit_event)

        # Audit resource compliance
        compliance_issues = self._identify_inventory_compliance_issues(inventory_results)
        for issue in compliance_issues:
            audit_event = self.record_audit_event(
                module="inventory",
                event_type="compliance_issue",
                description=issue["description"],
                severity=AuditSeverity.HIGH if issue["critical"] else AuditSeverity.MEDIUM,
                resource_id=issue.get("resource_id"),
                account_id=issue.get("account_id"),
                metadata=issue.get("metadata", {}),
            )
            audit_events.append(audit_event)

        return audit_events

    async def audit_security_operations(self, security_results: Dict[str, Any]) -> List[AuditEvent]:
        """
        Generate audit events for security operations.

        Args:
            security_results: Results from security assessment

        Returns:
            List of generated audit events
        """
        audit_events = []

        # Record security assessment event
        findings = security_results.get("findings", [])
        critical_findings = [f for f in findings if f.get("severity") == "CRITICAL"]

        audit_event = self.record_audit_event(
            module="security",
            event_type="security_assessment",
            description=f"Security assessment completed with {len(findings)} findings ({len(critical_findings)} critical)",
            severity=AuditSeverity.CRITICAL if critical_findings else AuditSeverity.INFORMATIONAL,
            metadata={
                "total_findings": len(findings),
                "critical_findings": len(critical_findings),
                "assessment_timestamp": datetime.now().isoformat(),
            },
        )
        audit_events.append(audit_event)

        # Record individual critical findings
        for finding in critical_findings:
            audit_event = self.record_audit_event(
                module="security",
                event_type="critical_security_finding",
                description=finding.get("description", "Critical security finding identified"),
                severity=AuditSeverity.CRITICAL,
                resource_id=finding.get("resource_id"),
                account_id=finding.get("account_id"),
                metadata=finding,
            )
            audit_events.append(audit_event)

        return audit_events

    async def audit_operate_operations(self, operation_results: List[Dict[str, Any]]) -> List[AuditEvent]:
        """
        Generate audit events for operational activities.

        Args:
            operation_results: Results from operate module

        Returns:
            List of generated audit events
        """
        audit_events = []

        for operation in operation_results:
            # Determine severity based on operation type and outcome
            severity = (
                AuditSeverity.HIGH if operation.get("type") in ["terminate", "delete"] else AuditSeverity.INFORMATIONAL
            )
            if not operation.get("success", True):
                severity = AuditSeverity.HIGH

            audit_event = self.record_audit_event(
                module="operate",
                event_type=f"operation_{operation.get('type', 'unknown')}",
                description=f"Operation {operation.get('type', 'unknown')} on {operation.get('resource_id', 'unknown')} {'succeeded' if operation.get('success') else 'failed'}",
                severity=severity,
                resource_id=operation.get("resource_id"),
                account_id=operation.get("account_id"),
                region=operation.get("region"),
                metadata=operation,
            )
            audit_events.append(audit_event)

        return audit_events

    def _determine_applicable_frameworks(self, event_type: str, module: str) -> List[ComplianceFramework]:
        """Determine which compliance frameworks apply to an event."""
        applicable = []

        # All events apply to SOC2 and ISO27001 for general security controls
        if ComplianceFramework.SOC2 in self.compliance_frameworks:
            applicable.append(ComplianceFramework.SOC2)
        if ComplianceFramework.ISO27001 in self.compliance_frameworks:
            applicable.append(ComplianceFramework.ISO27001)

        # AWS Well-Architected applies to all AWS operations
        if ComplianceFramework.AWS_WELL_ARCHITECTED in self.compliance_frameworks:
            applicable.append(ComplianceFramework.AWS_WELL_ARCHITECTED)

        # Security and data handling events may apply to PCI-DSS and HIPAA
        if event_type in ["security_assessment", "data_access", "encryption_change"]:
            if ComplianceFramework.PCI_DSS in self.compliance_frameworks:
                applicable.append(ComplianceFramework.PCI_DSS)
            if ComplianceFramework.HIPAA in self.compliance_frameworks:
                applicable.append(ComplianceFramework.HIPAA)

        return applicable

    def _calculate_compliance_score(self, events: List[AuditEvent]) -> float:
        """Calculate overall compliance score based on audit events."""
        if not events:
            return 100.0

        # Weight events by severity
        severity_weights = {
            AuditSeverity.CRITICAL: -10,
            AuditSeverity.HIGH: -5,
            AuditSeverity.MEDIUM: -2,
            AuditSeverity.LOW: -1,
            AuditSeverity.INFORMATIONAL: 0,
        }

        total_impact = sum(severity_weights.get(event.severity, 0) for event in events)

        # Calculate score (100 is perfect, penalties reduce score)
        base_score = 100.0
        penalty = abs(total_impact) / len(events) * 10  # Scale penalty

        compliance_score = max(0.0, base_score - penalty)
        return min(100.0, compliance_score)

    def _generate_compliance_recommendations(
        self, events: List[AuditEvent], critical_findings: List[AuditEvent]
    ) -> List[str]:
        """Generate compliance recommendations based on audit events."""
        recommendations = []

        if critical_findings:
            recommendations.append(f"Address {len(critical_findings)} critical security findings immediately")

        # Analyze event patterns
        module_event_counts = {}
        for event in events:
            if event.severity in [AuditSeverity.CRITICAL, AuditSeverity.HIGH]:
                module_event_counts[event.module] = module_event_counts.get(event.module, 0) + 1

        # Recommend focus areas
        if module_event_counts:
            top_module = max(module_event_counts, key=module_event_counts.get)
            recommendations.append(
                f"Focus security improvements on {top_module} module ({module_event_counts[top_module]} high-priority events)"
            )

        # Generic recommendations
        recommendations.extend(
            [
                "Implement automated security remediation for common findings",
                "Establish regular compliance monitoring and reporting",
                "Enhance access controls and monitoring for critical operations",
                "Review and update security policies based on audit findings",
            ]
        )

        return recommendations

    async def _analyze_business_impact(self, events: List[AuditEvent]) -> Dict[str, Any]:
        """Analyze business impact of audit events."""
        # Estimate potential cost impact
        critical_events = [e for e in events if e.severity == AuditSeverity.CRITICAL]
        high_events = [e for e in events if e.severity == AuditSeverity.HIGH]

        # Rough cost estimates for different types of findings
        estimated_cost_impact = len(critical_events) * 10000 + len(high_events) * 2500

        return {
            "estimated_cost_impact_usd": estimated_cost_impact,
            "critical_business_risks": len(critical_events),
            "compliance_violations": len([e for e in events if "compliance" in e.event_type]),
            "operational_disruptions": len(
                [e for e in events if e.module == "operate" and not e.metadata.get("success", True)]
            ),
            "security_exposure_level": "HIGH" if critical_events else "MEDIUM" if high_events else "LOW",
        }

    def _generate_audit_trail_summary(self, events: List[AuditEvent]) -> Dict[str, Any]:
        """Generate audit trail summary statistics."""
        return {
            "total_events": len(events),
            "unique_resources": len(set(e.resource_id for e in events if e.resource_id)),
            "unique_accounts": len(set(e.account_id for e in events if e.account_id)),
            "event_types": list(set(e.event_type for e in events)),
            "time_span_days": (
                datetime.fromisoformat(max(e.timestamp for e in events))
                - datetime.fromisoformat(min(e.timestamp for e in events))
            ).days
            if events
            else 0,
        }

    def _identify_inventory_compliance_issues(self, inventory_results: Dict[str, Any]) -> List[Dict[str, Any]]:
        """Identify compliance issues from inventory results."""
        issues = []

        # Example compliance checks
        resources = inventory_results.get("resources", {})

        # Check for untagged resources
        for resource_type, accounts_data in resources.items():
            for account_id, account_data in accounts_data.items():
                if resource_type == "ec2" and "instances" in account_data:
                    for instance in account_data["instances"]:
                        if not instance.get("tags"):
                            issues.append(
                                {
                                    "description": f"Untagged EC2 instance {instance.get('instance_id')}",
                                    "resource_id": instance.get("instance_id"),
                                    "account_id": account_id,
                                    "critical": False,
                                    "metadata": {"compliance_rule": "required_tagging"},
                                }
                            )

        return issues

    def display_compliance_dashboard(self, report: ComplianceReport) -> None:
        """Display comprehensive compliance dashboard using Rich formatting."""

        # Main compliance score panel
        score_color = "green" if report.compliance_score >= 95 else "yellow" if report.compliance_score >= 80 else "red"
        score_panel = create_panel(
            f"[{score_color}]{report.compliance_score:.1f}%[/{score_color}]", title="Overall Compliance Score"
        )
        console.print(score_panel)

        # Events by severity table
        severity_table = create_table(
            title="Events by Severity", columns=[("Severity", "cyan"), ("Count", "magenta"), ("Percentage", "green")]
        )

        total_events = report.total_events
        for severity, count in report.events_by_severity.items():
            percentage = (count / total_events * 100) if total_events > 0 else 0
            severity_table.add_row(severity.upper(), str(count), f"{percentage:.1f}%")

        console.print(severity_table)

        # Critical findings summary
        if report.critical_findings:
            console.print(
                f"\n[red]🚨 {len(report.critical_findings)} Critical Findings Requiring Immediate Attention:[/red]"
            )
            for finding in report.critical_findings[:5]:  # Show top 5
                console.print(f"  • {finding.description}")
            if len(report.critical_findings) > 5:
                console.print(f"  • ... and {len(report.critical_findings) - 5} more")

        # Business impact
        if report.business_impact_analysis:
            impact = report.business_impact_analysis
            cost_impact = impact.get("estimated_cost_impact_usd", 0)

            if cost_impact > 0:
                impact_panel = create_panel(
                    f"Estimated Cost Impact: {format_cost(cost_impact)}\n"
                    f"Security Exposure: {impact.get('security_exposure_level', 'UNKNOWN')}\n"
                    f"Compliance Violations: {impact.get('compliance_violations', 0)}",
                    title="Business Impact Analysis",
                )
                console.print(impact_panel)

        # Recommendations
        if report.recommendations:
            console.print(f"\n[cyan]📋 Top Recommendations:[/cyan]")
            for i, rec in enumerate(report.recommendations[:3], 1):
                console.print(f"  {i}. {rec}")

    def export_audit_report(self, report: ComplianceReport, format: str = "json") -> str:
        """Export compliance report in specified format."""
        if format.lower() == "json":
            import json

            return json.dumps(
                {
                    "compliance_report": {
                        "report_timestamp": report.report_timestamp,
                        "frameworks_assessed": [f.value for f in report.frameworks_assessed],
                        "compliance_score": report.compliance_score,
                        "total_events": report.total_events,
                        "events_by_severity": report.events_by_severity,
                        "events_by_module": report.events_by_module,
                        "critical_findings": [finding.to_dict() for finding in report.critical_findings],
                        "recommendations": report.recommendations,
                        "business_impact_analysis": report.business_impact_analysis,
                        "audit_trail_summary": report.audit_trail_summary,
                    }
                },
                indent=2,
            )

        # Add other formats as needed (CSV, PDF, etc.)
        return str(report)


# Export public interface
__all__ = [
    "EnterpriseAuditIntegrator",
    "ComplianceFramework",
    "AuditSeverity",
    "AuditEvent",
    "ComplianceReport",
]
