"""
Compliance Checker Agent

Checks infrastructure compliance against standards like CIS, PCI-DSS,
HIPAA, SOC 2, and custom policies. Performs security audits and reporting.
"""

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


class ComplianceCheckerAgent(BaseAgent):
    """Checks infrastructure compliance and security standards."""

    def __init__(self):
        super().__init__(
            name='compliance-checker',
            description='Check infrastructure compliance against security standards',
            category='devops',
            version='1.0.0',
            tags=['compliance', 'security', 'audit', 'cis', 'pci-dss', 'hipaa', 'soc2']
        )

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

        Args:
            params: {
                'action': 'scan|report|remediate|schedule',
                'compliance_frameworks': ['cis', 'pci-dss', 'hipaa', 'soc2', 'gdpr'],
                'cloud_provider': 'aws|gcp|azure|kubernetes',
                'scope': {
                    'accounts': ['123456789012'],
                    'regions': ['us-east-1', 'us-west-2'],
                    'resource_types': ['s3', 'ec2', 'rds', 'iam']
                },
                'severity_threshold': 'critical|high|medium|low',
                'auto_remediate': false,
                'remediation_mode': 'automatic|manual|dry-run',
                'report_format': 'json|pdf|html|csv',
                'exclude_checks': ['check-1.2.3'],
                'custom_policies': [...]
            }

        Returns:
            {
                'status': 'success',
                'compliance_score': 85.5,
                'checks_passed': 234,
                'checks_failed': 45,
                'findings': [...]
            }
        """
        action = params.get('action', 'scan')
        frameworks = params.get('compliance_frameworks', ['cis'])
        provider = params.get('cloud_provider', 'aws')
        severity_threshold = params.get('severity_threshold', 'medium')

        self.logger.info(
            f"Compliance {action} for {', '.join(frameworks)} on {provider}"
        )

        result = {
            'status': 'success',
            'action': action,
            'compliance_frameworks': frameworks,
            'cloud_provider': provider,
            'timestamp': '2025-11-16T00:00:00Z'
        }

        if action == 'scan':
            findings = [
                {
                    'id': 'CIS-1.2',
                    'title': 'Ensure MFA is enabled for root account',
                    'framework': 'cis',
                    'severity': 'critical',
                    'status': 'failed',
                    'resource': 'root-account',
                    'description': 'Root account does not have MFA enabled',
                    'remediation': 'Enable MFA for root account in IAM console',
                    'risk_score': 9.5,
                    'compliance_impact': 'high'
                },
                {
                    'id': 'CIS-2.1.1',
                    'title': 'Ensure S3 bucket encryption is enabled',
                    'framework': 'cis',
                    'severity': 'high',
                    'status': 'failed',
                    'resource': 'arn:aws:s3:::my-bucket',
                    'description': 'S3 bucket does not have default encryption enabled',
                    'remediation': 'Enable default encryption on S3 bucket',
                    'risk_score': 7.8,
                    'compliance_impact': 'high',
                    'auto_remediable': True
                },
                {
                    'id': 'PCI-DSS-1.2.1',
                    'title': 'Firewall configuration standards',
                    'framework': 'pci-dss',
                    'severity': 'high',
                    'status': 'passed',
                    'resource': 'sg-0123456789',
                    'description': 'Security group has proper configuration',
                    'compliance_impact': 'medium'
                }
            ]

            result.update({
                'scan_id': f'scan-{provider}-20251116-001',
                'compliance_score': 85.5,
                'total_checks': 279,
                'checks_passed': 234,
                'checks_failed': 45,
                'checks_skipped': 0,
                'pass_rate_percent': 83.9,
                'findings': findings,
                'by_severity': {
                    'critical': 3,
                    'high': 12,
                    'medium': 18,
                    'low': 12,
                    'info': 0
                },
                'by_framework': {
                    'cis': {'total': 156, 'passed': 132, 'failed': 24, 'score': 84.6},
                    'pci-dss': {'total': 89, 'passed': 78, 'failed': 11, 'score': 87.6},
                    'hipaa': {'total': 34, 'passed': 24, 'failed': 10, 'score': 70.6}
                },
                'by_resource_type': {
                    's3': {'checks': 45, 'failed': 12},
                    'ec2': {'checks': 67, 'failed': 8},
                    'rds': {'checks': 34, 'failed': 5},
                    'iam': {'checks': 89, 'failed': 15}
                },
                'auto_remediable_findings': 23,
                'scan_duration_seconds': 234.5,
                'resources_scanned': 567
            })

        if action == 'remediate':
            result.update({
                'scan_id': params.get('scan_id', 'scan-aws-20251116-001'),
                'remediation_mode': params.get('remediation_mode', 'manual'),
                'findings_remediated': 23,
                'findings_pending': 22,
                'remediation_results': [
                    {
                        'finding_id': 'CIS-2.1.1',
                        'resource': 'arn:aws:s3:::my-bucket',
                        'action': 'enabled default encryption',
                        'status': 'success',
                        'timestamp': '2025-11-16T10:05:00Z'
                    },
                    {
                        'finding_id': 'CIS-3.1',
                        'resource': 'arn:aws:cloudtrail:us-east-1:123:trail/my-trail',
                        'action': 'enabled log file validation',
                        'status': 'success',
                        'timestamp': '2025-11-16T10:05:30Z'
                    }
                ],
                'manual_remediation_required': [
                    {
                        'finding_id': 'CIS-1.2',
                        'reason': 'Requires human intervention',
                        'instructions': 'Enable MFA for root account manually'
                    }
                ],
                'new_compliance_score': 92.3,
                'score_improvement': 6.8
            })

        if action == 'report':
            result.update({
                'report_id': f'report-{provider}-20251116',
                'report_format': params.get('report_format', 'pdf'),
                'report_url': 'https://compliance-reports.example.com/report-20251116.pdf',
                'report_generated_at': '2025-11-16T10:00:00Z',
                'executive_summary': {
                    'overall_compliance_score': 85.5,
                    'trend': 'improving',
                    'previous_score': 82.3,
                    'critical_findings': 3,
                    'high_findings': 12,
                    'compliance_status': 'partial',
                    'frameworks_assessed': len(frameworks)
                },
                'detailed_findings': {
                    'total': 45,
                    'new_findings': 5,
                    'resolved_findings': 8,
                    'recurring_findings': 12
                },
                'remediation_summary': {
                    'auto_remediated': 15,
                    'manual_remediation_pending': 22,
                    'accepted_risks': 8
                },
                'recommendations': [
                    'Prioritize remediation of 3 critical findings',
                    'Enable auto-remediation for S3 encryption checks',
                    'Schedule monthly compliance scans',
                    'Review and update IAM policies'
                ],
                'compliance_by_account': {
                    '123456789012': {'score': 87.5, 'findings': 23},
                    '234567890123': {'score': 83.2, 'findings': 22}
                }
            })

        if action == 'schedule':
            result.update({
                'schedule_id': f'schedule-{provider}-compliance',
                'schedule_created': True,
                'scan_frequency': params.get('schedule', {}).get('frequency', 'daily'),
                'next_scan': '2025-11-17T02:00:00Z',
                'frameworks': frameworks,
                'notification_channels': ['email', 'slack'],
                'auto_remediate_enabled': params.get('auto_remediate', False)
            })

        return result

    def validate_params(self, params: Dict[str, Any]) -> bool:
        """Validate compliance checking parameters."""
        valid_frameworks = ['cis', 'pci-dss', 'hipaa', 'soc2', 'gdpr', 'iso27001', 'nist']
        frameworks = params.get('compliance_frameworks', ['cis'])
        for framework in frameworks:
            if framework not in valid_frameworks:
                self.logger.error(f"Invalid compliance framework: {framework}")
                return False

        valid_providers = ['aws', 'gcp', 'azure', 'kubernetes']
        provider = params.get('cloud_provider', 'aws')
        if provider not in valid_providers:
            self.logger.error(f"Invalid cloud_provider: {provider}")
            return False

        valid_actions = ['scan', 'report', 'remediate', 'schedule']
        action = params.get('action', 'scan')
        if action not in valid_actions:
            self.logger.error(f"Invalid action: {action}")
            return False

        return True
