// CODAI Service Integration with Enhanced CND
import { CND } from '../index.js';
import { CNDConfig } from '../types.js';

/**
 * Gateway Service CND Integration
 * Port: 4000 - API Gateway with routing and authentication
 */
class GatewayCNDIntegration {
    private cnd: CND;

    constructor() {
        const config: CNDConfig = {
            cbd: {
                host: process.env.CBD_HOST || 'localhost',
                port: parseInt(process.env.CBD_PORT || '5000'),
                database: 'gateway_db',
                auth: {
                    username: process.env.CBD_USERNAME,
                    password: process.env.CBD_PASSWORD
                }
            },
            enterprise: {
                enabled: true,
                features: {
                    serviceDiscovery: true,
                    authentication: true,
                    authorization: true,
                    encryption: true,
                    audit: true,
                    monitoring: true,
                    backup: false,
                    clustering: false
                }
            },
            serviceDiscovery: {
                enabled: true,
                serviceName: 'gateway',
                tags: ['api-gateway', 'routing', 'authentication', 'core'],
                healthCheckInterval: 15000
            },
            auth: {
                enabled: true,
                provider: 'jwt',
                config: {
                    secret: process.env.JWT_SECRET || 'gateway-secret',
                    issuer: 'codai-gateway',
                    audience: 'codai-services'
                },
                rbac: {
                    enabled: true,
                    roles: {
                        admin: ['*'],
                        service: ['service:read', 'service:write'],
                        user: ['user:read', 'user:write'],
                        guest: ['public:read']
                    },
                    permissions: {
                        'service:read': ['GET /api/services/*'],
                        'service:write': ['POST /api/services/*', 'PUT /api/services/*'],
                        'user:read': ['GET /api/users/*'],
                        'user:write': ['POST /api/users/*', 'PUT /api/users/*'],
                        'public:read': ['GET /api/public/*']
                    }
                }
            },
            security: {
                encryption: {
                    enabled: true,
                    algorithm: 'aes-256-gcm'
                },
                audit: {
                    enabled: true,
                    storage: 'database',
                    retention: 90
                },
                rateLimit: {
                    enabled: true,
                    windowMs: 60000,
                    maxRequests: 1000
                }
            },
            performance: {
                monitoring: {
                    enabled: true,
                    metricsPort: 9090,
                    healthCheckPath: '/health'
                }
            },
            cache: {
                enabled: true,
                ttl: 900, // 15 minutes
                distributed: false
            }
        };

        this.cnd = new CND(config);
    }

    async initialize(): Promise<void> {
        await this.cnd.connect();
        console.log('Gateway CND integration initialized');
    }

    async authenticateRequest(token: string) {
        return await this.cnd.authenticateToken(token);
    }

    async routeToService(serviceName: string) {
        return this.cnd.getNextInstance(serviceName);
    }

    async logAPIRequest(method: string, endpoint: string, context: any, responseStatus: number, duration: number) {
        // Implementation would use the audit logger
    }
}

/**
 * CODAI Service CND Integration  
 * Port: 4001 - Core AI processing service
 */
class CODAICNDIntegration {
    private cnd: CND;

    constructor() {
        const config: CNDConfig = {
            cbd: {
                host: process.env.CBD_HOST || 'localhost',
                port: parseInt(process.env.CBD_PORT || '5000'),
                database: 'codai_db'
            },
            enterprise: {
                enabled: true,
                features: {
                    serviceDiscovery: true,
                    authentication: true,
                    authorization: true,
                    encryption: true,
                    audit: true,
                    monitoring: true,
                    backup: true,
                    clustering: false
                }
            },
            serviceDiscovery: {
                enabled: true,
                serviceName: 'codai',
                tags: ['ai', 'core', 'processing', 'ml'],
                healthCheckInterval: 20000
            },
            auth: {
                enabled: true,
                provider: 'jwt',
                config: {
                    secret: process.env.JWT_SECRET || 'codai-secret',
                    issuer: 'codai-service',
                    audience: 'codai-users'
                }
            },
            security: {
                encryption: {
                    enabled: true,
                    algorithm: 'aes-256-gcm'
                },
                audit: {
                    enabled: true,
                    storage: 'database',
                    retention: 180 // 6 months for AI processing logs
                }
            },
            performance: {
                monitoring: {
                    enabled: true,
                    metricsPort: 9091
                },
                backup: {
                    enabled: true,
                    schedule: '0 2 * * *', // Daily at 2 AM
                    storage: 'local',
                    retention: 30
                }
            }
        };

        this.cnd = new CND(config);
    }

    async initialize(): Promise<void> {
        await this.cnd.connect();
        console.log('CODAI CND integration initialized');
    }

    async storeAIModel(modelData: any) {
        // Store AI model data using CND's document API
        return await this.cnd.collection('ai_models').create(modelData);
    }

    async searchSimilarVectors(vector: number[], threshold: number = 0.8) {
        // Use CND's vector API for similarity search
        return await this.cnd.vector('embeddings').similarity(vector, {
            threshold,
            limit: 10
        });
    }
}

/**
 * ID Service CND Integration
 * Port: 4004 - Identity and authentication service
 */
class IDCNDIntegration {
    private cnd: CND;

    constructor() {
        const config: CNDConfig = {
            cbd: {
                host: process.env.CBD_HOST || 'localhost',
                port: parseInt(process.env.CBD_PORT || '5000'),
                database: 'id_db'
            },
            enterprise: {
                enabled: true,
                features: {
                    serviceDiscovery: true,
                    authentication: true,
                    authorization: true,
                    encryption: true,
                    audit: true,
                    monitoring: true,
                    backup: true,
                    clustering: false
                }
            },
            serviceDiscovery: {
                enabled: true,
                serviceName: 'id',
                tags: ['identity', 'authentication', 'authorization', 'security'],
                healthCheckInterval: 10000
            },
            auth: {
                enabled: true,
                provider: 'internal', // ID service is the auth provider
                config: {
                    secret: process.env.JWT_SECRET || 'id-service-secret'
                },
                rbac: {
                    enabled: true,
                    roles: {
                        super_admin: ['*'],
                        admin: ['user:*', 'role:*', 'permission:*'],
                        manager: ['user:read', 'user:write', 'role:read'],
                        user: ['profile:read', 'profile:write'],
                        guest: ['public:read']
                    },
                    permissions: {
                        'user:read': ['GET /users/*'],
                        'user:write': ['POST /users/*', 'PUT /users/*'],
                        'user:delete': ['DELETE /users/*'],
                        'role:read': ['GET /roles/*'],
                        'role:write': ['POST /roles/*', 'PUT /roles/*'],
                        'permission:read': ['GET /permissions/*'],
                        'profile:read': ['GET /profile'],
                        'profile:write': ['PUT /profile'],
                        'public:read': ['GET /public/*']
                    }
                }
            },
            security: {
                encryption: {
                    enabled: true,
                    algorithm: 'aes-256-gcm',
                    keyRotation: {
                        enabled: true,
                        interval: 30 // Monthly key rotation for security
                    }
                },
                audit: {
                    enabled: true,
                    storage: 'database',
                    retention: 2555 // 7 years for compliance
                },
                rateLimit: {
                    enabled: true,
                    windowMs: 60000,
                    maxRequests: 100 // Stricter limits for auth service
                }
            },
            performance: {
                monitoring: {
                    enabled: true,
                    metricsPort: 9094
                },
                backup: {
                    enabled: true,
                    schedule: '0 1 * * *', // Daily at 1 AM
                    storage: 'local',
                    retention: 90
                }
            }
        };

        this.cnd = new CND(config);
    }

    async initialize(): Promise<void> {
        await this.cnd.connect();
        console.log('ID Service CND integration initialized');
    }

    async createUser(userData: any) {
        const startTime = Date.now();
        try {
            const user = await this.cnd.sql`
        INSERT INTO users (${Object.keys(userData).join(', ')})
        VALUES (${Object.values(userData)})
        RETURNING *
      `;

            // Log successful user creation
            await this.logAuditEvent('USER_CREATE', `users/${user[0].id}`, userData);

            return user[0];
        } catch (error) {
            const errorMessage = error instanceof Error ? error.message : 'Unknown error';
            await this.logAuditEvent('USER_CREATE_FAILED', 'users', { error: errorMessage });
            throw error;
        }
    }

    async authenticateUser(email: string, password: string) {
        const startTime = Date.now();
        try {
            // Use CND's authentication system
            const context = await this.cnd.authenticate(email, password);

            if (context) {
                await this.logAuditEvent('LOGIN_SUCCESS', `sessions/${context.sessionId}`, {
                    userId: context.userId,
                    method: 'password'
                });
            }

            return context;
        } catch (error) {
            const errorMessage = error instanceof Error ? error.message : 'Unknown error';
            await this.logAuditEvent('LOGIN_FAILED', 'authentication', {
                email,
                error: errorMessage
            });
            throw error;
        }
    }

    private async logAuditEvent(operation: string, resource: string, details: any) {
        // Implementation would use CND's audit logger
    }
}

/**
 * BancAI Service CND Integration
 * Port: 4005 - Banking AI service
 */
class BancAICNDIntegration {
    private cnd: CND;

    constructor() {
        const config: CNDConfig = {
            cbd: {
                host: process.env.CBD_HOST || 'localhost',
                port: parseInt(process.env.CBD_PORT || '5000'),
                database: 'bancai_db'
            },
            enterprise: {
                enabled: true,
                features: {
                    serviceDiscovery: true,
                    authentication: true,
                    authorization: true,
                    encryption: true,
                    audit: true,
                    monitoring: true,
                    backup: true,
                    clustering: false
                }
            },
            serviceDiscovery: {
                enabled: true,
                serviceName: 'bancai',
                tags: ['banking', 'ai', 'financial', 'compliance'],
                healthCheckInterval: 15000
            },
            auth: {
                enabled: true,
                provider: 'jwt',
                config: {
                    secret: process.env.JWT_SECRET || 'bancai-secret',
                    issuer: 'bancai-service'
                },
                rbac: {
                    enabled: true,
                    roles: {
                        bank_admin: ['*'],
                        compliance_officer: ['audit:*', 'transaction:read', 'account:read'],
                        teller: ['transaction:read', 'transaction:create', 'account:read'],
                        customer: ['account:read', 'transaction:read:own'],
                        guest: ['public:read']
                    },
                    permissions: {
                        'transaction:read': ['GET /transactions/*'],
                        'transaction:create': ['POST /transactions/*'],
                        'transaction:read:own': ['GET /transactions/user/:userId'],
                        'account:read': ['GET /accounts/*'],
                        'audit:read': ['GET /audit/*'],
                        'public:read': ['GET /public/*']
                    }
                }
            },
            security: {
                encryption: {
                    enabled: true,
                    algorithm: 'aes-256-gcm',
                    keyRotation: {
                        enabled: true,
                        interval: 14 // Bi-weekly for financial data
                    }
                },
                audit: {
                    enabled: true,
                    storage: 'database',
                    retention: 2555 // 7 years for financial compliance
                },
                rateLimit: {
                    enabled: true,
                    windowMs: 60000,
                    maxRequests: 200
                }
            },
            performance: {
                monitoring: {
                    enabled: true,
                    metricsPort: 9095
                },
                backup: {
                    enabled: true,
                    schedule: '0 */6 * * *', // Every 6 hours for financial data
                    storage: 'local',
                    retention: 365 // 1 year
                }
            }
        };

        this.cnd = new CND(config);
    }

    async initialize(): Promise<void> {
        await this.cnd.connect();
        console.log('BancAI CND integration initialized');
    }

    async processTransaction(transactionData: any) {
        const startTime = Date.now();
        try {
            // Store transaction using CND's SQL API
            const transaction = await this.cnd.sql`
        INSERT INTO transactions (${Object.keys(transactionData).join(', ')})
        VALUES (${Object.values(transactionData)})
        RETURNING *
      `;

            // Log transaction processing
            await this.logAuditEvent('TRANSACTION_PROCESSED', `transactions/${transaction[0].id}`, {
                amount: transactionData.amount,
                type: transactionData.type
            });

            return transaction[0];
        } catch (error) {
            const errorMessage = error instanceof Error ? error.message : 'Unknown error';
            await this.logAuditEvent('TRANSACTION_FAILED', 'transactions', {
                error: errorMessage,
                transactionData
            });
            throw error;
        }
    }

    async detectFraud(transactionPattern: any) {
        // Use CND's vector search for fraud pattern detection
        const similarPatterns = await this.cnd.vector('fraud_patterns').similarity(transactionPattern.vector, {
            threshold: 0.85,
            limit: 5
        });

        return {
            isFraudulent: similarPatterns.length > 0,
            confidence: similarPatterns[0]?.score || 0,
            patterns: similarPatterns
        };
    }

    private async logAuditEvent(operation: string, resource: string, details: any) {
        // Implementation would use CND's audit logger
    }
}

/**
 * Service Orchestrator - Coordinates all CND integrations
 */
class CODAIServiceOrchestrator {
    private services: Map<string, any> = new Map();

    async initializeAllServices(): Promise<void> {
        console.log('Initializing CODAI ecosystem with enhanced CND...');

        // Initialize all service integrations
        const gateway = new GatewayCNDIntegration();
        const codai = new CODAICNDIntegration();
        const id = new IDCNDIntegration();
        const bancai = new BancAICNDIntegration();

        // Store service references
        this.services.set('gateway', gateway);
        this.services.set('codai', codai);
        this.services.set('id', id);
        this.services.set('bancai', bancai);

        // Initialize all services
        await Promise.all([
            gateway.initialize(),
            codai.initialize(),
            id.initialize(),
            bancai.initialize()
        ]);

        console.log('All CODAI services initialized with enterprise CND integration');
    }

    getService(name: string) {
        return this.services.get(name);
    }

    async getEcosystemHealth(): Promise<any> {
        const healthChecks = await Promise.all(
            Array.from(this.services.entries()).map(async ([name, service]) => {
                try {
                    const health = await service.cnd?.getHealthStatus?.() || { status: 'unknown' };
                    return { service: name, ...health };
                } catch (error) {
                    const errorMessage = error instanceof Error ? error.message : 'Unknown error';
                    return { service: name, status: 'error', error: errorMessage };
                }
            })
        );

        return {
            ecosystem: 'CODAI',
            timestamp: new Date(),
            services: healthChecks,
            overallStatus: healthChecks.every(h => h.status === 'healthy') ? 'healthy' : 'degraded'
        };
    }
}

// Usage example
async function initializeCODAIEcosystem() {
    const orchestrator = new CODAIServiceOrchestrator();
    await orchestrator.initializeAllServices();

    // Check ecosystem health
    const health = await orchestrator.getEcosystemHealth();
    console.log('CODAI Ecosystem Health:', JSON.stringify(health, null, 2));

    return orchestrator;
}

// Export all integrations
export {
    GatewayCNDIntegration,
    CODAICNDIntegration,
    IDCNDIntegration,
    BancAICNDIntegration,
    CODAIServiceOrchestrator,
    initializeCODAIEcosystem
};