"""
Compliance Checker Agent

Check regulatory compliance for GDPR, HIPAA, SOC2, PCI-DSS, and other
standards. Monitors compliance status and generates compliance reports.
"""

from typing import Any, Dict, List
from agents.base import BaseAgent


class ComplianceCheckerAgent(BaseAgent):
    """
    Regulatory compliance checking agent.

    Checks compliance with:
    - GDPR (General Data Protection Regulation)
    - HIPAA (Health Insurance Portability and Accountability Act)
    - SOC2 (Service Organization Control 2)
    - PCI-DSS (Payment Card Industry Data Security Standard)
    - ISO 27001, NIST, CIS benchmarks
    """

    def __init__(self):
        super().__init__(
            name='compliance-checker',
            description='Check regulatory compliance (GDPR, HIPAA, SOC2)',
            category='security',
            version='1.0.0',
            tags=['compliance', 'gdpr', 'hipaa', 'soc2', 'pci-dss', 'regulatory']
        )

    async def execute(self, params: Dict[str, Any]) -> Dict[str, Any]:
        """
        Check compliance.

        Args:
            params: {
                'regulations': ['gdpr', 'hipaa', 'soc2', 'pci-dss', 'iso27001'],
                'scope': {
                    'systems': List[str],
                    'data_stores': List[str],
                    'applications': List[str],
                    'processes': List[str]
                },
                'check_type': 'full|quick|targeted',
                'options': {
                    'check_data_protection': bool,
                    'check_access_controls': bool,
                    'check_encryption': bool,
                    'check_audit_logs': bool,
                    'check_policies': bool,
                    'check_training': bool,
                    'check_incident_response': bool,
                    'check_vendor_management': bool
                },
                'generate_remediation': bool,
                'output_format': 'pdf|json|html|compliance-report'
            }

        Returns:
            {
                'status': 'success|failed',
                'compliance_id': str,
                'overall_compliance': Dict,
                'violations': List[Dict],
                'recommendations': List[str]
            }
        """
        regulations = params.get('regulations', ['gdpr'])
        scope = params.get('scope', {})
        check_type = params.get('check_type', 'full')
        options = params.get('options', {})

        self.logger.info(
            f"Checking compliance for: {', '.join(regulations)} - {check_type} check"
        )

        # Mock compliance check results
        gdpr_compliance = {
            'regulation': 'GDPR',
            'overall_score': 72.5,
            'status': 'partial',
            'last_assessment': '2025-11-16',
            'articles_checked': 99,
            'articles_compliant': 72,
            'articles_non_compliant': 27,
            'violations': [
                {
                    'article': 'Article 32',
                    'title': 'Security of processing',
                    'severity': 'high',
                    'description': 'Insufficient encryption for personal data at rest',
                    'affected_systems': ['customer_database', 'backup_storage'],
                    'records_affected': 150000,
                    'max_fine': '€20M or 4% of annual turnover',
                    'remediation': 'Implement AES-256 encryption for all personal data',
                    'timeline': '30 days'
                },
                {
                    'article': 'Article 25',
                    'title': 'Data protection by design and by default',
                    'severity': 'medium',
                    'description': 'Default privacy settings not configured',
                    'affected_systems': ['web_application', 'mobile_app'],
                    'remediation': 'Configure default privacy settings to most restrictive',
                    'timeline': '60 days'
                },
                {
                    'article': 'Article 33',
                    'title': 'Notification of personal data breach',
                    'severity': 'high',
                    'description': 'Breach notification process not documented',
                    'remediation': 'Document and test breach notification procedures',
                    'timeline': '14 days'
                },
                {
                    'article': 'Article 30',
                    'title': 'Records of processing activities',
                    'severity': 'medium',
                    'description': 'Processing records incomplete',
                    'remediation': 'Maintain comprehensive processing activity records',
                    'timeline': '90 days'
                }
            ],
            'rights_compliance': {
                'right_to_access': 'compliant',
                'right_to_rectification': 'compliant',
                'right_to_erasure': 'partial',
                'right_to_data_portability': 'non-compliant',
                'right_to_object': 'compliant',
                'right_to_restrict_processing': 'partial'
            }
        }

        hipaa_compliance = {
            'regulation': 'HIPAA',
            'overall_score': 68.3,
            'status': 'partial',
            'safeguards_checked': 45,
            'safeguards_compliant': 31,
            'safeguards_non_compliant': 14,
            'violations': [
                {
                    'safeguard': '164.312(a)(1)',
                    'title': 'Access Control',
                    'severity': 'critical',
                    'description': 'Unique user identification not enforced for all users',
                    'affected_systems': ['ehr_system', 'patient_portal'],
                    'phi_at_risk': 75000,
                    'max_penalty': '$1.5M per violation',
                    'remediation': 'Implement unique user IDs and remove shared accounts',
                    'timeline': '30 days'
                },
                {
                    'safeguard': '164.312(a)(2)(iv)',
                    'title': 'Encryption and Decryption',
                    'severity': 'critical',
                    'description': 'PHI transmitted without encryption',
                    'affected_systems': ['email_system', 'file_transfer'],
                    'remediation': 'Encrypt all PHI in transit using TLS 1.2+',
                    'timeline': '14 days'
                },
                {
                    'safeguard': '164.308(a)(1)(ii)(D)',
                    'title': 'Information System Activity Review',
                    'severity': 'high',
                    'description': 'Audit logs not regularly reviewed',
                    'remediation': 'Implement automated log review and monitoring',
                    'timeline': '60 days'
                },
                {
                    'safeguard': '164.308(a)(5)(ii)(C)',
                    'title': 'Log-in Monitoring',
                    'severity': 'medium',
                    'description': 'Login attempts not monitored',
                    'remediation': 'Enable login monitoring and alerting',
                    'timeline': '45 days'
                }
            ],
            'administrative_safeguards': 'partial',
            'physical_safeguards': 'partial',
            'technical_safeguards': 'non-compliant'
        }

        soc2_compliance = {
            'regulation': 'SOC 2',
            'overall_score': 78.9,
            'status': 'partial',
            'trust_service_criteria': {
                'security': {
                    'score': 82.0,
                    'status': 'partial',
                    'controls_tested': 45,
                    'controls_passed': 37,
                    'controls_failed': 8
                },
                'availability': {
                    'score': 85.5,
                    'status': 'partial',
                    'controls_tested': 23,
                    'controls_passed': 20,
                    'controls_failed': 3
                },
                'processing_integrity': {
                    'score': 75.2,
                    'status': 'partial',
                    'controls_tested': 18,
                    'controls_passed': 14,
                    'controls_failed': 4
                },
                'confidentiality': {
                    'score': 70.1,
                    'status': 'partial',
                    'controls_tested': 31,
                    'controls_passed': 22,
                    'controls_failed': 9
                },
                'privacy': {
                    'score': 81.3,
                    'status': 'partial',
                    'controls_tested': 27,
                    'controls_passed': 22,
                    'controls_failed': 5
                }
            },
            'violations': [
                {
                    'control': 'CC6.1',
                    'category': 'Logical and Physical Access Controls',
                    'severity': 'high',
                    'description': 'Privileged access not adequately restricted',
                    'remediation': 'Implement role-based access control',
                    'timeline': '60 days'
                },
                {
                    'control': 'CC7.2',
                    'category': 'System Monitoring',
                    'severity': 'medium',
                    'description': 'Security events not monitored in real-time',
                    'remediation': 'Implement SIEM for real-time monitoring',
                    'timeline': '90 days'
                }
            ]
        }

        pci_dss_compliance = {
            'regulation': 'PCI-DSS',
            'overall_score': 61.7,
            'status': 'non-compliant',
            'version': '4.0',
            'requirements_checked': 12,
            'requirements_compliant': 7,
            'requirements_non_compliant': 5,
            'violations': [
                {
                    'requirement': '3.4',
                    'title': 'Primary Account Number Rendering',
                    'severity': 'critical',
                    'description': 'Full PAN displayed in logs and screens',
                    'affected_systems': ['payment_gateway', 'admin_portal'],
                    'cards_affected': 25000,
                    'remediation': 'Mask PAN, display only last 4 digits',
                    'timeline': '30 days'
                },
                {
                    'requirement': '8.2',
                    'title': 'User Authentication',
                    'severity': 'high',
                    'description': 'MFA not implemented for all users',
                    'remediation': 'Implement MFA for all user access',
                    'timeline': '60 days'
                },
                {
                    'requirement': '10.2',
                    'title': 'Audit Logs',
                    'severity': 'high',
                    'description': 'Insufficient audit logging',
                    'remediation': 'Enable comprehensive audit logging',
                    'timeline': '45 days'
                }
            ],
            'merchant_level': 'Level 1',
            'saq_type': 'D',
            'attestation_required': True
        }

        overall_compliance = {
            'regulations_checked': len(regulations),
            'average_compliance_score': 70.4,
            'overall_status': 'partial',
            'critical_violations': 4,
            'high_violations': 8,
            'medium_violations': 12,
            'low_violations': 5,
            'total_violations': 29,
            'compliance_by_regulation': {}
        }

        if 'gdpr' in regulations:
            overall_compliance['compliance_by_regulation']['gdpr'] = gdpr_compliance
        if 'hipaa' in regulations:
            overall_compliance['compliance_by_regulation']['hipaa'] = hipaa_compliance
        if 'soc2' in regulations:
            overall_compliance['compliance_by_regulation']['soc2'] = soc2_compliance
        if 'pci-dss' in regulations:
            overall_compliance['compliance_by_regulation']['pci-dss'] = pci_dss_compliance

        recommendations = [
            'CRITICAL: Implement encryption for all sensitive data (GDPR, HIPAA, PCI-DSS)',
            'CRITICAL: Enforce unique user IDs and remove shared accounts (HIPAA)',
            'CRITICAL: Mask Primary Account Numbers in all systems (PCI-DSS)',
            'HIGH: Implement MFA for all user access (PCI-DSS, SOC2)',
            'HIGH: Document breach notification procedures (GDPR)',
            'HIGH: Enable comprehensive audit logging (HIPAA, PCI-DSS, SOC2)',
            'MEDIUM: Configure default privacy settings (GDPR)',
            'MEDIUM: Implement real-time security monitoring (SOC2)',
            'MEDIUM: Maintain processing activity records (GDPR)',
            'ONGOING: Conduct regular compliance assessments',
            'ONGOING: Provide compliance training to staff',
            'ONGOING: Update policies and procedures'
        ]

        return {
            'status': 'success',
            'compliance_id': f'compliance-check-20251116-001',
            'check_type': check_type,
            'regulations': regulations,
            'timestamp': '2025-11-16T00:00:00Z',
            'overall_compliance': overall_compliance,
            'violations': (
                gdpr_compliance.get('violations', []) +
                hipaa_compliance.get('violations', []) +
                soc2_compliance.get('violations', []) +
                pci_dss_compliance.get('violations', [])
            ),
            'recommendations': recommendations,
            'systems_assessed': len(scope.get('systems', [])) or 23,
            'data_stores_assessed': len(scope.get('data_stores', [])) or 15,
            'applications_assessed': len(scope.get('applications', [])) or 12,
            'assessment_duration_days': 3,
            'next_assessment_due': '2025-12-16',
            'reports_generated': [
                'compliance_report_20251116.pdf',
                'compliance_executive_summary_20251116.pdf',
                'compliance_detailed_findings_20251116.json',
                'compliance_remediation_plan_20251116.xlsx'
            ],
            'next_steps': [
                'Address critical violations immediately',
                'Develop remediation timeline for all violations',
                'Assign ownership for each compliance gap',
                'Schedule monthly compliance review meetings',
                'Update compliance program documentation',
                'Plan for external audit/assessment'
            ]
        }

    def validate_params(self, params: Dict[str, Any]) -> bool:
        """Validate compliance checking parameters."""
        valid_regulations = ['gdpr', 'hipaa', 'soc2', 'pci-dss', 'iso27001', 'nist', 'cis', 'ccpa']
        regulations = params.get('regulations', ['gdpr'])

        for regulation in regulations:
            if regulation.lower() not in valid_regulations:
                self.logger.error(f"Invalid regulation: {regulation}")
                return False

        valid_check_types = ['full', 'quick', 'targeted']
        check_type = params.get('check_type', 'full')
        if check_type not in valid_check_types:
            self.logger.error(f"Invalid check_type: {check_type}")
            return False

        return True
