"""
Integration Tests for CHRONOS Modules

Tests module interactions, data flow, and end-to-end workflows.
"""

import pytest
from datetime import datetime
from unittest.mock import patch, MagicMock
import json


class TestNetworkToRiskIntegration:
    """Test integration between network detection and risk calculation."""
    
    def test_network_scan_to_risk_workflow(self, mock_network_scan_results):
        """Test complete workflow from scan to risk assessment."""
        # Network scan provides hosts
        hosts = mock_network_scan_results["hosts"]
        assert len(hosts) > 0
        
        # Risk is calculated for each host
        for host in hosts:
            quantum_risk = host["quantum_risk"]
            assert 0.0 <= quantum_risk <= 1.0
            
            # Vulnerabilities contribute to risk
            if host["vulnerabilities"]:
                assert quantum_risk > 0.0
    
    def test_vulnerability_to_quantum_risk_mapping(self, mock_network_scan_results):
        """Test vulnerability to quantum risk mapping."""
        total_vulns = mock_network_scan_results["total_vulnerabilities"]
        quantum_vuln_hosts = mock_network_scan_results["quantum_vulnerable"]
        
        assert quantum_vuln_hosts <= len(mock_network_scan_results["hosts"])
        assert total_vulns >= 0
    
    def test_host_criticality_impact_on_risk(self, test_data_factory):
        """Test how host criticality impacts risk assessment."""
        high_criticality_host = test_data_factory.create_network_host(
            ip="192.168.1.10"
        )
        low_criticality_host = test_data_factory.create_network_host(
            ip="192.168.1.20"
        )
        
        # Both should be valid hosts
        assert high_criticality_host["ip"] == "192.168.1.10"
        assert low_criticality_host["ip"] == "192.168.1.20"


class TestCryptoToMigrationIntegration:
    """Test integration between crypto analysis and PQC migration."""
    
    def test_crypto_inventory_to_migration_planning(
        self,
        mock_crypto_inventory,
        mock_pqc_migration_candidates
    ):
        """Test flow from crypto inventory to migration candidates."""
        # Inventory identifies vulnerable algorithms
        vulnerable = mock_crypto_inventory["vulnerable_count"]
        assert vulnerable > 0
        
        # Migration planning addresses vulnerable systems
        migration_candidates = mock_pqc_migration_candidates["high_priority"]
        assert len(migration_candidates) > 0
        
        # All migration candidates should target vulnerable algorithms
        for candidate in migration_candidates:
            assert candidate["current_algorithm"] in ["RSA", "ECDSA", "ECC"]
    
    def test_rsa_vulnerability_to_kyber_recommendation(
        self,
        mock_crypto_inventory,
        mock_pqc_migration_candidates
    ):
        """Test RSA vulnerability leads to Kyber recommendation."""
        # Find RSA certificates
        rsa_certs = [
            c for c in mock_crypto_inventory["certificates"]
            if "RSA" in c["algorithm"]
        ]
        
        if rsa_certs:
            # Should have migration candidates
            migration = mock_pqc_migration_candidates["high_priority"]
            kyber_migrations = [
                m for m in migration
                if m["recommended_replacement"] == "Kyber"
            ]
            assert len(kyber_migrations) > 0
    
    def test_quantum_timeline_drives_prioritization(
        self,
        mock_quantum_threat_data,
        mock_pqc_migration_candidates
    ):
        """Test quantum threat timeline drives migration prioritization."""
        # Get threat timeline
        rsa_threat = mock_quantum_threat_data["algorithms_at_risk"]["RSA"]
        timeline = rsa_threat["threat_timeline"]
        
        # Should have high priority migrations
        high_priority = mock_pqc_migration_candidates["high_priority"]
        assert len(high_priority) > 0


class TestVaultToAuditIntegration:
    """Test integration between vault operations and audit logging."""
    
    def test_encryption_operation_audit_trail(self, mock_vault_operations):
        """Test that encrypt operations create audit trail."""
        audit_logs = mock_vault_operations["audit_logs"]
        encrypt_logs = [l for l in audit_logs if l["operation"] == "ENCRYPT"]
        
        # All encrypt operations should be logged
        for log in encrypt_logs:
            assert "timestamp" in log
            assert "status" in log
            assert log["status"] == "SUCCESS"
    
    def test_access_count_reflects_audit_logs(self, mock_vault_operations):
        """Test that access count matches audit logs."""
        secrets = mock_vault_operations["encrypted_secrets"]
        audit_logs = mock_vault_operations["audit_logs"]
        
        # Each secret can be accessed through vault
        for secret in secrets:
            secret_logs = [
                l for l in audit_logs
                if l["secret_id"] == secret["id"]
            ]
            # Access count should be >= audit log entries
            assert secret["access_count"] >= len(secret_logs)
    
    def test_geographic_distribution_with_audit(self, mock_vault_operations):
        """Test geographic distribution of secrets with audit."""
        geo_dist = mock_vault_operations["geographic_distribution"]
        
        # Total distribution should equal 100
        assert sum(geo_dist.values()) == 100
        
        # Each region should have audit logs
        for region in geo_dist:
            assert len(region) > 0


class TestQuantumAlgorithmIntegration:
    """Test integration of quantum algorithms with threat assessment."""
    
    def test_shors_algorithm_with_rsa_threat(self):
        """Test Shor's algorithm with RSA threat assessment."""
        from chronos.core.simulate.shors_algorithm import (
            create_shors_algorithm,
            SymmetricKeyType
        )
        
        # Create algorithm instance
        algo = create_shors_algorithm()
        assert algo is not None
    
    def test_grovers_algorithm_with_aes_threat(self):
        """Test Grover's algorithm with AES threat assessment."""
        from chronos.core.simulate.grovers_algorithm import (
            create_grovers_algorithm,
            SymmetricKeyType
        )
        
        # Create algorithm instance
        algo = create_grovers_algorithm()
        assert algo is not None
    
    def test_quantum_threat_algorithm_selection(self):
        """Test selecting appropriate quantum algorithm for threat."""
        threats = {
            "RSA": "Shors",
            "ECC": "Shors",
            "AES": "Grovers",
            "ChaCha20": "Grovers"
        }
        
        for algorithm, quantum_algo in threats.items():
            assert quantum_algo in ["Shors", "Grovers"]


class TestDetectAnalyzeDefendWorkflow:
    """Test complete Detect-Analyze-Defend workflow."""
    
    def test_detect_to_analyze_workflow(self, mock_network_scan_results):
        """Test Detect phase feeding into Analyze phase."""
        # Detect: Find vulnerabilities
        hosts = mock_network_scan_results["hosts"]
        vulns = []
        for host in hosts:
            vulns.extend(host.get("vulnerabilities", []))
        
        # Analyze: Assess impact
        assert len(vulns) >= 0  # Can have zero vulnerabilities
        quantum_vulnerable = mock_network_scan_results["quantum_vulnerable"]
        assert quantum_vulnerable >= 0
    
    def test_analyze_to_defend_workflow(
        self,
        mock_quantum_threat_data,
        mock_pqc_migration_candidates
    ):
        """Test Analyze phase feeding into Defend phase."""
        # Analyze: Identify threats
        threats = mock_quantum_threat_data["algorithms_at_risk"]
        rsa_at_risk = "RSA" in threats
        
        # Defend: Plan migration
        if rsa_at_risk:
            migration_plan = mock_pqc_migration_candidates
            assert "high_priority" in migration_plan
    
    def test_end_to_end_security_workflow(
        self,
        mock_network_scan_results,
        mock_crypto_inventory,
        mock_pqc_migration_candidates
    ):
        """Test complete end-to-end security workflow."""
        # DETECT: Network reconnaissance
        hosts = mock_network_scan_results["hosts"]
        assert len(hosts) > 0
        
        # ANALYZE: Cryptographic assessment
        vulnerable = mock_crypto_inventory["vulnerable_count"]
        assert vulnerable > 0
        
        # DEFEND: Migration planning
        plan = mock_pqc_migration_candidates
        assert "high_priority" in plan
        assert "estimated_total_effort_months" in plan


class TestDataIntegrityAcrossModules:
    """Test data integrity as it flows between modules."""
    
    def test_host_data_consistency(self, test_data_factory):
        """Test host data remains consistent."""
        host = test_data_factory.create_network_host()
        
        # Verify required fields
        required_fields = ["ip", "ports", "os", "services"]
        for field in required_fields:
            assert field in host
            assert host[field] is not None
    
    def test_crypto_key_data_consistency(self, test_data_factory):
        """Test crypto key data remains consistent."""
        key = test_data_factory.create_crypto_key()
        
        # Verify required fields
        required_fields = ["algorithm", "size", "quantum_safe"]
        for field in required_fields:
            assert field in key
    
    def test_threat_data_consistency(self, mock_quantum_threat_data):
        """Test threat data consistency."""
        data = mock_quantum_threat_data
        
        assert "algorithms_at_risk" in data
        assert "quantum_computers_estimate" in data
        
        # All algorithms should have complete info
        for algo, info in data["algorithms_at_risk"].items():
            assert "key_sizes" in info
            assert "threat_timeline" in info


class TestErrorPropagationAcrossModules:
    """Test how errors propagate through module interactions."""
    
    def test_invalid_network_data_handling(self):
        """Test handling of invalid network data."""
        invalid_data = {
            "hosts": None,
            "vulnerabilities": []
        }
        
        # Should handle gracefully
        if invalid_data["hosts"] is None:
            assert True
    
    def test_missing_crypto_data_handling(self):
        """Test handling of missing crypto data."""
        incomplete_inventory = {
            "certificates": [],
            "encryption_keys": []
        }
        
        # Should not fail with empty data
        assert isinstance(incomplete_inventory["certificates"], list)
        assert isinstance(incomplete_inventory["encryption_keys"], list)
    
    def test_invalid_risk_score_handling(self):
        """Test handling of invalid risk scores."""
        invalid_scores = [-0.1, 1.5, None, "high"]
        
        for score in invalid_scores:
            if score is not None and isinstance(score, (int, float)):
                assert not (0.0 <= score <= 1.0)


class TestPerformanceIntegration:
    """Test performance characteristics in integrated workflows."""
    
    def test_large_network_scan_integration(self):
        """Test handling large network scans."""
        large_scan = {
            "hosts": [{"ip": f"192.168.1.{i}", "ports": [22, 80]}
                     for i in range(1, 256)]
        }
        
        assert len(large_scan["hosts"]) == 255
    
    def test_large_crypto_inventory_integration(self):
        """Test handling large crypto inventories."""
        large_inventory = {
            "encryption_keys": [
                {"type": "RSA", "size": 2048, "count": i}
                for i in range(1, 100)
            ]
        }
        
        total_keys = sum(k["count"] for k in large_inventory["encryption_keys"])
        assert total_keys > 0
    
    def test_concurrent_module_operations(self):
        """Test concurrent operations across modules."""
        # Simulate concurrent detection and analysis
        import threading
        
        results = []
        
        def detect():
            results.append({"module": "detect", "status": "complete"})
        
        def analyze():
            results.append({"module": "analyze", "status": "complete"})
        
        t1 = threading.Thread(target=detect)
        t2 = threading.Thread(target=analyze)
        
        t1.start()
        t2.start()
        
        t1.join()
        t2.join()
        
        assert len(results) == 2


if __name__ == "__main__":
    pytest.main([__file__, "-v"])
