"""
Container Scanner Agent

Scans container images for vulnerabilities, misconfigurations, and
security issues using tools like Trivy, Clair, and Snyk.
"""

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


class ContainerScannerAgent(BaseAgent):
    """Scans containers for vulnerabilities and security issues."""

    def __init__(self):
        super().__init__(
            name='container-scanner',
            description='Scan containers for vulnerabilities and security issues',
            category='devops',
            version='1.0.0',
            tags=['security', 'containers', 'vulnerabilities', 'trivy', 'docker', 'scanning']
        )

    async def execute(self, params: Dict[str, Any]) -> Dict[str, Any]:
        """
        Scan container for vulnerabilities.

        Args:
            params: {
                'scanner': 'trivy|clair|snyk|aqua',
                'image': 'nginx:latest or registry/image:tag',
                'scan_type': 'vulnerabilities|secrets|misconfigurations|all',
                'severity_threshold': 'CRITICAL|HIGH|MEDIUM|LOW',
                'fail_on_severity': 'CRITICAL|HIGH|MEDIUM',
                'ignore_unfixed': true|false,
                'scan_layers': true|false,
                'output_format': 'json|table|sarif',
                'registry_credentials': {...}
            }

        Returns:
            {
                'status': 'success|failed',
                'image': '...',
                'vulnerabilities_found': 15,
                'severity_breakdown': {...},
                'scan_passed': true|false
            }
        """
        scanner = params.get('scanner', 'trivy')
        image = params.get('image')
        scan_type = params.get('scan_type', 'all')
        severity_threshold = params.get('severity_threshold', 'MEDIUM')
        fail_on = params.get('fail_on_severity', 'CRITICAL')

        self.logger.info(
            f"Scanning container image '{image}' with {scanner} (threshold: {severity_threshold})"
        )

        # Simulate vulnerability findings
        vulnerabilities = [
            {
                'id': 'CVE-2024-1234',
                'package': 'openssl',
                'version': '1.1.1k',
                'fixed_version': '1.1.1w',
                'severity': 'CRITICAL',
                'title': 'Buffer overflow in OpenSSL',
                'description': 'Remote code execution vulnerability',
                'cvss_score': 9.8
            },
            {
                'id': 'CVE-2024-5678',
                'package': 'curl',
                'version': '7.68.0',
                'fixed_version': '7.88.0',
                'severity': 'HIGH',
                'title': 'Authentication bypass in curl',
                'cvss_score': 7.5
            },
            {
                'id': 'CVE-2024-9012',
                'package': 'libxml2',
                'version': '2.9.10',
                'fixed_version': '2.9.14',
                'severity': 'MEDIUM',
                'title': 'XML parsing vulnerability',
                'cvss_score': 5.3
            }
        ]

        severity_counts = {
            'CRITICAL': 1,
            'HIGH': 3,
            'MEDIUM': 8,
            'LOW': 12
        }

        # Check if scan should fail
        critical_found = severity_counts.get('CRITICAL', 0) > 0
        high_found = severity_counts.get('HIGH', 0) > 0

        scan_passed = True
        if fail_on == 'CRITICAL' and critical_found:
            scan_passed = False
        elif fail_on == 'HIGH' and (critical_found or high_found):
            scan_passed = False

        result = {
            'status': 'success',
            'scanner': scanner,
            'image': image,
            'scan_type': scan_type,
            'severity_threshold': severity_threshold,
            'vulnerabilities_found': sum(severity_counts.values()),
            'severity_breakdown': severity_counts,
            'vulnerabilities': vulnerabilities[:3],  # Top 3 for summary
            'scan_passed': scan_passed,
            'fixable_vulnerabilities': 15,
            'unfixed_vulnerabilities': 9,
            'secrets_found': 0 if scan_type == 'vulnerabilities' else 2,
            'misconfigurations_found': 0 if scan_type == 'vulnerabilities' else 5,
            'scan_duration_seconds': 23.4,
            'timestamp': '2025-11-16T00:00:00Z',
            'recommendations': [
                'Update openssl to version 1.1.1w or later',
                'Update curl to version 7.88.0 or later',
                'Remove secrets from image layers',
                'Run container as non-root user'
            ]
        }

        if not scan_passed:
            result['failure_reason'] = f'Found {severity_counts.get(fail_on, 0)} {fail_on} severity vulnerabilities'

        return result

    def validate_params(self, params: Dict[str, Any]) -> bool:
        """Validate container scanning parameters."""
        if 'image' not in params:
            self.logger.error("Missing required field: image")
            return False

        valid_scanners = ['trivy', 'clair', 'snyk', 'aqua']
        scanner = params.get('scanner', 'trivy')
        if scanner not in valid_scanners:
            self.logger.error(f"Invalid scanner: {scanner}")
            return False

        valid_types = ['vulnerabilities', 'secrets', 'misconfigurations', 'all']
        scan_type = params.get('scan_type', 'all')
        if scan_type not in valid_types:
            self.logger.error(f"Invalid scan_type: {scan_type}")
            return False

        return True
