🔗 Hybrid Integration Guide: Seamless Onchain/Offchain Design

@trust("hybrid")
service HybridDataService {
    // Combines blockchain immutability with offchain performance
}

@secure
@audit
service SecureHybridService {
    // Implements defense-in-depth across all layers
}

@async
service EventDrivenSync {
    // Real-time synchronization between onchain and offchain
}

@trust("hybrid")
@persistent
service HybridDataPipeline {
    blockchain_cache: Map<String, any>,
    offchain_store: Map<String, any>,

    fn store_hybrid_data(user_id: String, data: any) -> Result<HybridResult, Error> {
        // Step 1: Validate data integrity
        let validation = self.validate_data_integrity(data);

        // Step 2: Store offchain first (faster, cheaper)
        let offchain_result = self.store_offchain(user_id, data);

        // Step 3: Generate data hash for onchain verification
        let data_hash = crypto::hash(data);

        // Step 4: Store hash onchain (immutable proof)
        let onchain_result = self.store_onchain(user_id, data_hash);

        // Step 5: Create verification record
        let verification_record = {
            "user_id": user_id,
            "data_hash": data_hash,
            "offchain_location": offchain_result.location,
            "onchain_tx_hash": onchain_result.tx_hash,
            "timestamp": chain::get_block_timestamp()
        };

        return Ok(HybridResult {
            "offchain_id": offchain_result.id,
            "onchain_tx_hash": onchain_result.tx_hash,
            "verification_hash": crypto::hash(verification_record)
        });
    }

    fn retrieve_hybrid_data(user_id: String) -> Result<VerifiedData, Error> {
        // Step 1: Get onchain hash (source of truth)
        let onchain_hash = chain::call("ethereum", "getUserDataHash", [user_id]);

        // Step 2: Retrieve offchain data
        let offchain_data = self.retrieve_offchain(user_id);

        // Step 3: Verify data integrity
        let current_hash = crypto::hash(offchain_data);

        if current_hash != onchain_hash {
            // Data mismatch - trigger reconciliation
            return self.reconcile_data_mismatch(user_id, onchain_hash, offchain_data);
        }

        return Ok(VerifiedData {
            "data": offchain_data,
            "verification": "verified",
            "trust_level": "hybrid"
        });
    }
}

@trust("hybrid")
@secure
service MultiChainAssetManager {
    supported_chains: List<String>,
    asset_balances: Map<String, Map<String, Float>>,

    fn get_total_asset_balance(user_address: String, token_symbol: String) -> Result<AssetBalance, Error> {
        let total_balance = 0.0;
        let chain_balances = Map::new();

        // Query balance on each supported chain
        for chain in self.supported_chains {
            let balance = chain::get_token_balance(chain, token_symbol, user_address);
            chain_balances[chain] = balance;
            total_balance += balance;
        }

        // Get USD value using multi-chain oracles
        let usd_value = self.get_asset_usd_value(token_symbol, total_balance);

        return Ok(AssetBalance {
            "token": token_symbol,
            "total_balance": total_balance,
            "usd_value": usd_value,
            "chain_breakdown": chain_balances
        });
    }

    fn optimize_asset_distribution(user_address: String, token_symbol: String) -> Result<OptimizationResult, Error> {
        let current_distribution = self.analyze_current_distribution(user_address, token_symbol);
        let opportunities = self.find_optimization_opportunities(current_distribution);
        let rebalance_result = self.execute_rebalancing(user_address, opportunities);

        return Ok(OptimizationResult {
            "gas_saved": rebalance_result.gas_saved,
            "time_saved": rebalance_result.time_saved,
            "new_distribution": rebalance_result.new_distribution
        });
    }
}

@trust("hybrid")
@ai
service RealTimeDataStreamer {
    data_streams: Map<String, any>,
    blockchain_verifier: any,

    fn process_real_time_data() -> Result<Unit, Error> {
        for stream_name, stream in self.data_streams {
            let raw_data = oracle::get_stream_data(stream);

            // AI-powered data analysis
            let analysis = ai::analyze_data(self.ai_analyzer, raw_data);

            // Blockchain verification for critical data
            if stream_name == "price_feed" {
                let verification = chain::verify_data_integrity(self.blockchain_verifier, raw_data);
                if !verification.is_valid {
                    log::error("verification", {
                        "stream": stream_name,
                        "event": "data_integrity_failed"
                    });
                    continue;
                }
            }

            // Store verified data
            self.store_verified_data(stream_name, raw_data, analysis);

            // Trigger real-time actions
            self.trigger_real_time_actions(stream_name, analysis);
        }

        return Ok(());
    }
}

@secure
@audit
fn verify_hybrid_transaction(transaction: any) -> Result<VerificationResult, Error> {
    // Layer 1: JWT Authentication (NEW in v1.0.2)
    let auth_result = http::validate_jwt_token(transaction.auth_token);
    if !auth_result.is_valid {
        return Err("Authentication failed");
    }

    // Layer 2: ECDSA Cryptographic Verification (NEW in v1.0.2)
    // Production-grade secp256k1 signatures (Ethereum-compatible)
    let crypto_check = crypto::verify_ecdsa_signature(
        transaction.data,
        transaction.signature,
        transaction.public_key
    );

    // Layer 3: Oracle verification
    let oracle_check = oracle::verify_data_sources(transaction);

    // Layer 4: Business logic validation
    let business_check = self.validate_business_rules(transaction);

    // Layer 5: Risk assessment with CloudAdmin
    let risk_check = self.assess_transaction_risk(transaction);
    
    // Layer 6: CloudAdmin Policy Enforcement (NEW)
    let admin_result = cloudadmin::authorize(
        transaction.user_context,
        "write",
        transaction.resource
    );

    // Aggregate results
    let final_decision = self.aggregate_verification_results([
        auth_result, crypto_check, oracle_check, business_check, risk_check, admin_result
    ]);

    return Ok(final_decision);
}

@trust("hybrid")
service ZeroTrustSystem {
    fn implement_continuous_verification() -> Result<ZeroTrustResult, Error> {
        // Continuous identity verification
        let identity_verification = "continuous";

        // Per-request access validation
        let access_validation = "per_request";

        // Real-time context awareness
        let context_awareness = "real_time";

        // Continuous threat detection
        let threat_detection = "continuous";

        return Ok(ZeroTrustResult {
            "identity_verification": identity_verification,
            "access_validation": access_validation,
            "context_awareness": context_awareness,
            "threat_detection": threat_detection
        });
    }
}

@secure
service HybridKeyManager {
    fn generate_hybrid_key_pair(user_id: String) -> Result<KeyPair, Error> {
        // Generate ECDSA key pair with real secp256k1 (NEW in v1.0.2)
        // Uses k256 crate for Ethereum-compatible keys
        let key_pair = crypto::generate_ecdsa_keypair();
        
        // Verify keypair is valid before proceeding
        let test_signature = crypto::sign_ecdsa("test_message", key_pair.private_key);
        let verification = crypto::verify_ecdsa_signature(
            "test_message",
            test_signature,
            key_pair.public_key
        );
        
        if !verification {
            return Err("Keypair generation failed verification");
        }

        // Store private key encrypted offchain with PBKDF2 (NEW)
        let encrypted_private = crypto::encrypt_key_pbkdf2(
            key_pair.private_key,
            user_id
        );

        // Store public key hash onchain with SHA256 (NEW)
        let public_hash = crypto::hash_sha256(key_pair.public_key);
        let onchain_tx = chain::store_key_hash(user_id, public_hash);

        // Create JWT for secure API access (NEW in v1.0.2)
        let jwt_token = http::generate_jwt(
            user_id,
            ["user"],
            ["read", "write", "sign"]
        );

        // Create backup and recovery options
        let backup = self.create_key_backup(user_id, key_pair);

        return Ok(KeyPair {
            "public_key": key_pair.public_key,
            "private_key_reference": encrypted_private.id,
            "onchain_hash": public_hash,
            "jwt_token": jwt_token,
            "backup_created": true,
            "key_type": "secp256k1_ecdsa",
            "ethereum_compatible": true
        });
    }
    
    fn generate_solana_key_pair(user_id: String) -> Result<KeyPair, Error> {
        // Generate Ed25519 key pair for Solana (NEW in v1.0.2)
        // Uses ed25519-dalek crate for Solana-compatible keys
        let key_pair = crypto::generate_eddsa_keypair();
        
        // Similar process as above but for Ed25519
        return Ok(KeyPair {
            "public_key": key_pair.public_key,
            "key_type": "ed25519_eddsa",
            "solana_compatible": true
        });
    }
}

@persistent
@cached
service IntelligentCache {
    l1_cache: Map<String, any>, // Fast in-memory
    l2_cache: Map<String, any>, // Distributed cache
    l3_cache: Map<String, any>, // Onchain cache

    fn get_optimized_data(key: String) -> Result<any, Error> {
        // Try L1 cache first (fastest)
        let l1_data = self.l1_cache.get(key);
        if l1_data != null && !self.is_expired(l1_data) {
            return Ok(l1_data);
        }

        // Try L2 cache
        let l2_data = self.l2_cache.get(key);
        if l2_data != null && !self.is_expired(l2_data) {
            // Update L1 cache
            self.l1_cache.set(key, l2_data);
            return Ok(l2_data);
        }

        // Fetch from source and update all caches
        let fresh_data = self.fetch_from_source(key);
        self.update_all_caches(key, fresh_data);

        return Ok(fresh_data);
    }
}

@ai
service HybridLoadBalancer {
    onchain_load: Float,
    offchain_load: Float,

    fn route_request(request: any) -> Result<RoutingDecision, Error> {
        // Analyze request characteristics
        let request_profile = self.analyze_request_profile(request);

        // Check current system loads
        let current_loads = {
            "onchain": self.get_onchain_load(),
            "offchain": self.get_offchain_load()
        };

        // Predict optimal routing using AI
        let prediction = ai::predict_optimal_routing(request_profile, current_loads);

        // Make routing decision
        let decision = if prediction.recommended_system == "offchain" &&
                        current_loads.offchain < 0.8 {
            "route_to_offchain"
        } else if prediction.recommended_system == "onchain" &&
                   current_loads.onchain < 0.9 {
            "route_to_onchain"
        } else {
            "use_hybrid_approach"
        };

        return Ok(RoutingDecision {
            "decision": decision,
            "estimated_latency": prediction.estimated_latency,
            "cost_savings": prediction.cost_savings,
            "confidence_score": prediction.confidence
        });
    }
}

@ai
service PredictiveScaler {
    usage_patterns: Map<String, any>,
    scaling_history: List<any>,

    fn predict_and_scale() -> Result<ScalingDecision, Error> {
        // Analyze usage patterns
        let pattern_analysis = ai::analyze_usage_patterns(self.usage_patterns);

        // Predict future demand
        let demand_prediction = ai::predict_demand(pattern_analysis, "1_hour_ahead");

        // Calculate optimal resource allocation
        let optimal_allocation = self.calculate_optimal_allocation(demand_prediction);

        // Execute scaling decisions
        let scaling_result = self.execute_scaling_decisions(optimal_allocation);

        // Learn from results
        self.update_scaling_model(scaling_result);

        return Ok(ScalingDecision {
            "predicted_demand": demand_prediction,
            "optimal_allocation": optimal_allocation,
            "scaling_executed": scaling_result.success,
            "cost_impact": scaling_result.cost_impact
        });
    }
}

@async
service EventDrivenSync {
    event_queue: any,
    sync_workers: List<any>,

    fn setup_event_sync() -> Result<Unit, Error> {
        // Setup blockchain event listeners
        let blockchain_events = chain::create_event_listener({
            "contract_address": "0x...",
            "events": ["Transfer", "Approval", "Deposit"],
            "callback": "handle_blockchain_event"
        });

        // Setup offchain event listeners
        let offchain_events = database::create_change_listener({
            "table": "user_data",
            "operations": ["INSERT", "UPDATE", "DELETE"],
            "callback": "handle_database_event"
        });

        // Start sync workers
        for i in 0..5 {
            let worker = spawn sync_worker(i);
            self.sync_workers.push(worker);
        }

        return Ok(());
    }

    fn handle_blockchain_event(event: any) -> Result<Unit, Error> {
        // Process blockchain event
        let processed_event = self.process_blockchain_event(event);

        // Queue for offchain sync
        self.event_queue.push({
            "type": "blockchain_event",
            "data": processed_event,
            "priority": "high"
        });

        return Ok(());
    }

    fn handle_database_event(event: any) -> Result<Unit, Error> {
        // Process database event
        let processed_event = self.process_database_event(event);

        // Queue for onchain sync if needed
        if self.requires_onchain_sync(processed_event) {
            self.event_queue.push({
                "type": "database_event",
                "data": processed_event,
                "priority": "medium"
            });
        }

        return Ok(());
    }
}

@trust("hybrid")
service StateReconciler {
    reconciliation_schedule: any,

    fn perform_reconciliation() -> Result<ReconciliationResult, Error> {
        // Get current state from both systems
        let onchain_state = self.get_onchain_state();
        let offchain_state = self.get_offchain_state();

        // Compare states
        let differences = self.compare_states(onchain_state, offchain_state);

        let reconciliation_actions = [];

        for difference in differences {
            let action = self.determine_reconciliation_action(difference);
            reconciliation_actions.push(action);
        }

        // Execute reconciliation
        let execution_result = self.execute_reconciliation_actions(reconciliation_actions);

        // Verify reconciliation success
        let verification = self.verify_reconciliation_success(execution_result);

        return Ok(ReconciliationResult {
            "differences_found": differences.length(),
            "actions_taken": reconciliation_actions.length(),
            "execution_success": execution_result.success,
            "verification_passed": verification.passed,
            "next_reconciliation": self.schedule_next_reconciliation()
        });
    }

    fn determine_reconciliation_action(difference: any) -> ReconciliationAction {
        return match difference.type {
            "missing_onchain" => {
                "action": "create_onchain_record",
                "priority": "high",
                "rollback_possible": true
            },
            "missing_offchain" => {
                "action": "create_offchain_record",
                "priority": "medium",
                "rollback_possible": true
            },
            "data_mismatch" => {
                "action": "resolve_conflict",
                "priority": "critical",
                "rollback_possible": false
            },
            _ => {
                "action": "investigate_manually",
                "priority": "low",
                "rollback_possible": false
            }
        };
    }
}

@ai
service HybridHealthMonitor {
    health_metrics: Map<String, any>,
    alert_thresholds: Map<String, Float>,

    fn monitor_system_health() -> Result<HealthReport, Error> {
        let metrics = {
            "blockchain_connectivity": self.check_blockchain_connectivity(),
            "offchain_performance": self.measure_offchain_performance(),
            "sync_status": self.check_synchronization_status(),
            "security_status": self.assess_security_posture(),
            "user_experience": self.measure_user_experience()
        };

        // Calculate overall health score
        let health_score = self.calculate_health_score(metrics);

        // Generate health report
        let report = HealthReport {
            "overall_score": health_score,
            "metrics": metrics,
            "recommendations": self.generate_recommendations(metrics),
            "alerts": self.check_alert_conditions(metrics)
        };

        // Trigger alerts if necessary
        if report.alerts.length() > 0 {
            self.trigger_health_alerts(report.alerts);
        }

        return Ok(report);
    }

    fn check_synchronization_status() -> SyncStatus {
        // Check data consistency
        let consistency_check = self.verify_data_consistency();

        // Check sync latency
        let latency_check = self.measure_sync_latency();

        // Check error rates
        let error_check = self.analyze_sync_errors();

        return SyncStatus {
            "data_consistent": consistency_check.passed,
            "average_latency": latency_check.average,
            "error_rate": error_check.rate,
            "last_sync": latency_check.last_sync,
            "overall_status": self.determine_sync_status([
                consistency_check, latency_check, error_check
            ])
        };
    }
}

@ai
service PerformanceAnalytics {
    performance_history: List<any>,
    optimization_engine: any,

    fn analyze_performance_patterns() -> Result<PerformanceAnalysis, Error> {
        // Collect performance data
        let current_metrics = self.collect_performance_metrics();

        // Analyze trends
        let trend_analysis = ai::analyze_performance_trends(
            self.performance_history,
            current_metrics
        );

        // Identify bottlenecks
        let bottlenecks = self.identify_performance_bottlenecks(trend_analysis);

        // Generate optimization recommendations
        let recommendations = ai::generate_optimization_recommendations(
            bottlenecks,
            self.optimization_engine
        );

        // Predict future performance
        let predictions = ai::predict_future_performance(
            trend_analysis,
            recommendations
        );

        return Ok(PerformanceAnalysis {
            "current_metrics": current_metrics,
            "trend_analysis": trend_analysis,
            "bottlenecks": bottlenecks,
            "recommendations": recommendations,
            "predictions": predictions,
            "confidence_score": predictions.confidence
        });
    }
}

@ai
@trust("hybrid")
service AIDrivenOptimizer {
    optimization_model: any,
    learning_data: List<any>,

    fn optimize_hybrid_operations() -> Result<OptimizationResult, Error> {
        // Collect operational data
        let operational_data = self.collect_operational_data();

        // Analyze current performance
        let performance_analysis = ai::analyze_current_performance(operational_data);

        // Generate optimization strategies
        let strategies = ai::generate_optimization_strategies(
            performance_analysis,
            self.optimization_model
        );

        // Simulate strategy outcomes
        let simulations = [];
        for strategy in strategies {
            let simulation = self.simulate_strategy_outcome(strategy, operational_data);
            simulations.push(simulation);
        }

        // Select best strategy
        let best_strategy = ai::select_optimal_strategy(simulations);

        // Implement strategy
        let implementation = self.implement_optimization_strategy(best_strategy);

        // Monitor results and learn
        let monitoring = self.monitor_strategy_results(implementation);

        return Ok(OptimizationResult {
            "selected_strategy": best_strategy,
            "expected_improvement": best_strategy.expected_improvement,
            "implementation_status": implementation.status,
            "monitoring_active": monitoring.active
        });
    }
}

@quantum
@trust("hybrid")
service QuantumReadySystem {
    quantum_verifier: any,
    classical_fallback: any,

    fn implement_quantum_resistance() -> Result<QuantumReadiness, Error> {
        // Implement quantum-resistant cryptography
        let quantum_crypto = crypto::implement_quantum_resistant_crypto({
            "primary_algorithm": "CRYSTALS-Kyber",
            "fallback_algorithm": "ECDSA",
            "key_size": 4096
        });

        // Setup quantum verification
        self.quantum_verifier = chain::create_quantum_verifier({
            "verification_method": "lattice_based",
            "tolerance_threshold": 0.99,
            "fallback_enabled": true
        });

        // Implement classical fallback
        self.classical_fallback = self.setup_classical_fallback();

        // Test hybrid quantum/classical operation
        let test_result = self.test_quantum_classical_hybrid();

        return Ok(QuantumReadiness {
            "quantum_crypto_implemented": quantum_crypto.success,
            "quantum_verifier_active": true,
            "classical_fallback_ready": true,
            "hybrid_test_passed": test_result.passed,
            "readiness_score": self.calculate_readiness_score([
                quantum_crypto, test_result
            ])
        });
    }
}

@trust("hybrid")
@secure
service MyHybridService {
    // State
    onchain_data: Map<String, any>,
    offchain_cache: Map<String, any>,

    fn initialize() -> Result<Unit, Error> {
        // Setup connections
        self.setup_connections();
        // Initialize caches
        self.initialize_caches();
        // Setup monitoring
        self.setup_monitoring();
        return Ok(());
    }

    fn store_data(key: String, data: any) -> Result<StorageResult, Error> {
        // Store offchain first
        let offchain_result = self.store_offchain(key, data);

        // Generate hash and store onchain
        let data_hash = crypto::hash(data);
        let onchain_result = chain::store_data_hash(key, data_hash);

        return Ok(StorageResult {
            "offchain_id": offchain_result.id,
            "onchain_tx": onchain_result.tx_hash,
            "data_hash": data_hash
        });
    }

    fn retrieve_data(key: String) -> Result<RetrievedData, Error> {
        // Get onchain hash
        let onchain_hash = chain::get_data_hash(key);

        // Get offchain data
        let offchain_data = self.retrieve_offchain(key);

        // Verify integrity
        let current_hash = crypto::hash(offchain_data);
        let verified = current_hash == onchain_hash;

        return Ok(RetrievedData {
            "data": offchain_data,
            "verified": verified,
            "onchain_hash": onchain_hash
        });
    }
}

@trust("hybrid")
@ai
@secure
service AdvancedHybridService {
    // Advanced features
    ai_optimizer: any,
    predictive_scaler: any,
    security_monitor: any,

    fn intelligent_operation(params: any) -> Result<OperationResult, Error> {
        // AI-powered decision making
        let decision = ai::make_decision(self.ai_optimizer, params);

        // Execute operation
        let result = self.execute_operation(decision);

        // Monitor and learn
        ai::learn_from_result(self.ai_optimizer, params, result);

        return Ok(result);
    }

    fn predictive_maintenance() -> Result<MaintenanceAction, Error> {
        // Predict system issues
        let prediction = ai::predict_system_issues(self.predictive_scaler);

        // Take preventive action
        let action = self.take_preventive_action(prediction);

        return Ok(action);
    }

    fn adaptive_security() -> Result<SecurityAdaptation, Error> {
        // Monitor threat landscape
        let threats = self.monitor_threats();

        // Adapt security measures
        let adaptation = self.adapt_security_measures(threats);

        return Ok(adaptation);
    }
}