/**
 * Production Integration System
 * Complete deployment and orchestration for entity communication detection
 *
 * Integrates all neural pattern recognition components into a unified,
 * production-ready system with monitoring, scaling, and reliability.
 */

const EventEmitter = require('events');
const { ZeroVarianceDetector } = require('./zero-variance-detector');
const { MaximumEntropyDecoder } = require('./entropy-decoder');
const { InstructionSequenceAnalyzer } = require('./instruction-sequence-analyzer');
const { RealTimeEntityDetector } = require('./real-time-detector');
const { AdaptivePatternLearningNetwork } = require('./pattern-learning-network');
const { CommunicationDecodingPipeline } = require('./deployment-pipeline');
const { EntityCommunicationMonitor, RealTimeDashboard } = require('./monitoring-system');
const { EntityCommunicationValidationSuite } = require('./validation-suite');

/**
 * Master orchestration system for entity communication detection
 */
class EntityCommunicationSystem extends EventEmitter {
    constructor(config = {}) {
        super();

        this.config = {
            // System configuration
            mode: 'production', // 'development', 'staging', 'production'
            autoStart: true,
            enableMonitoring: true,
            enableDashboard: true,
            enableValidation: true,

            // Component configuration
            zeroVarianceConfig: {
                targetMean: -0.029,
                targetVariance: 0.000,
                sensitivity: 1e-15,
                windowSize: 1000
            },
            entropyConfig: {
                targetEntropy: 1.000,
                steganographyThreshold: 0.95,
                quantumAnalysisEnabled: true
            },
            instructionConfig: {
                impossibleMean: -28.736,
                mathematicalThreshold: 0.9,
                consciousnessDetection: true
            },
            realTimeConfig: {
                correlationThreshold: 0.8,
                responseTimeLimit: 1000,
                batchSize: 100
            },
            learningConfig: {
                adaptationRate: 0.01,
                memoryCapacity: 10000,
                neuralPlasticityEnabled: true
            },

            // Pipeline configuration
            pipelineConfig: {
                maxConcurrentTasks: 10,
                timeoutMs: 30000,
                retryAttempts: 3,
                enableCaching: true
            },

            // Monitoring configuration
            monitoringConfig: {
                alertThresholds: {
                    detectionAccuracy: 0.85,
                    responseTime: 1000,
                    memoryUsage: 0.8,
                    errorRate: 0.05
                },
                monitoringInterval: 1000,
                metricsRetention: 86400000
            },

            ...config
        };

        this.components = new Map();
        this.monitor = null;
        this.dashboard = null;
        this.pipeline = null;
        this.validationSuite = null;

        this.isInitialized = false;
        this.isRunning = false;
        this.systemHealth = 'initializing';

        this.initializationPromise = null;
    }

    /**
     * Initialize the complete entity communication detection system
     */
    async initialize() {
        if (this.isInitialized) {
            console.log('System already initialized');
            return;
        }

        if (this.initializationPromise) {
            return this.initializationPromise;
        }

        this.initializationPromise = this._performInitialization();
        return this.initializationPromise;
    }

    /**
     * Perform system initialization
     */
    async _performInitialization() {
        try {
            console.log('🚀 Initializing Entity Communication Detection System...');
            this.systemHealth = 'initializing';

            // Initialize core detection components
            await this.initializeDetectionComponents();

            // Initialize neural learning system
            await this.initializeNeuralSystems();

            // Initialize processing pipeline
            await this.initializePipeline();

            // Initialize monitoring and validation
            await this.initializeMonitoringAndValidation();

            // Setup inter-component communication
            this.setupComponentCommunication();

            // Perform initial system validation
            if (this.config.enableValidation) {
                await this.performInitialValidation();
            }

            this.isInitialized = true;
            this.systemHealth = 'ready';

            console.log('✅ Entity Communication Detection System initialized successfully');
            this.emit('system_initialized', {
                timestamp: Date.now(),
                components: Array.from(this.components.keys()),
                config: this.config
            });

            // Auto-start if configured
            if (this.config.autoStart) {
                await this.start();
            }

        } catch (error) {
            console.error('❌ System initialization failed:', error);
            this.systemHealth = 'failed';
            this.emit('initialization_failed', error);
            throw error;
        }
    }

    /**
     * Initialize core detection components
     */
    async initializeDetectionComponents() {
        console.log('🔧 Initializing detection components...');

        // Zero variance detector for micro-signals
        const zeroVarianceDetector = new ZeroVarianceDetector(this.config.zeroVarianceConfig);
        this.components.set('zeroVarianceDetector', zeroVarianceDetector);

        // Maximum entropy decoder for hidden information
        const entropyDecoder = new MaximumEntropyDecoder(this.config.entropyConfig);
        this.components.set('entropyDecoder', entropyDecoder);

        // Instruction sequence analyzer for mathematical messages
        const instructionAnalyzer = new InstructionSequenceAnalyzer(this.config.instructionConfig);
        this.components.set('instructionAnalyzer', instructionAnalyzer);

        // Real-time entity detector for correlation analysis
        const realTimeDetector = new RealTimeEntityDetector(this.config.realTimeConfig);
        this.components.set('realTimeDetector', realTimeDetector);

        console.log('✅ Detection components initialized');
    }

    /**
     * Initialize neural learning systems
     */
    async initializeNeuralSystems() {
        console.log('🧠 Initializing neural learning systems...');

        // Adaptive pattern learning network
        const learningNetwork = new AdaptivePatternLearningNetwork(this.config.learningConfig);
        await learningNetwork.initialize();
        this.components.set('learningNetwork', learningNetwork);

        console.log('✅ Neural systems initialized');
    }

    /**
     * Initialize processing pipeline
     */
    async initializePipeline() {
        console.log('⚙️ Initializing processing pipeline...');

        this.pipeline = new CommunicationDecodingPipeline(this.config.pipelineConfig);
        await this.pipeline.initialize();

        // Register components with pipeline
        for (const [name, component] of this.components) {
            this.pipeline.registerComponent(name, component);
        }

        console.log('✅ Processing pipeline initialized');
    }

    /**
     * Initialize monitoring and validation systems
     */
    async initializeMonitoringAndValidation() {
        console.log('📊 Initializing monitoring and validation...');

        // Monitoring system
        if (this.config.enableMonitoring) {
            this.monitor = new EntityCommunicationMonitor(this.config.monitoringConfig);

            // Real-time dashboard
            if (this.config.enableDashboard) {
                this.dashboard = new RealTimeDashboard(this.monitor);
            }
        }

        // Validation suite
        if (this.config.enableValidation) {
            this.validationSuite = new EntityCommunicationValidationSuite({
                components: this.components,
                testDataSize: 1000
            });
        }

        console.log('✅ Monitoring and validation initialized');
    }

    /**
     * Setup communication between components
     */
    setupComponentCommunication() {
        console.log('🔗 Setting up component communication...');

        // Real-time detector subscribes to other components
        const realTimeDetector = this.components.get('realTimeDetector');
        if (realTimeDetector) {
            const zeroVarianceDetector = this.components.get('zeroVarianceDetector');
            const entropyDecoder = this.components.get('entropyDecoder');
            const instructionAnalyzer = this.components.get('instructionAnalyzer');

            if (zeroVarianceDetector) {
                zeroVarianceDetector.on('detection', (data) => {
                    realTimeDetector.processZeroVarianceDetection(data);
                });
            }

            if (entropyDecoder) {
                entropyDecoder.on('hidden_information_found', (data) => {
                    realTimeDetector.processEntropyDetection(data);
                });
            }

            if (instructionAnalyzer) {
                instructionAnalyzer.on('impossible_sequence_detected', (data) => {
                    realTimeDetector.processInstructionDetection(data);
                });
            }
        }

        // Learning network subscribes to all detections
        const learningNetwork = this.components.get('learningNetwork');
        if (learningNetwork) {
            this.components.forEach((component, name) => {
                if (component !== learningNetwork && component.on) {
                    component.on('detection', (data) => {
                        learningNetwork.processDetectionEvent(name, data);
                    });
                    component.on('pattern_found', (data) => {
                        learningNetwork.processPatternEvent(name, data);
                    });
                }
            });
        }

        // Monitor subscribes to all system events
        if (this.monitor) {
            this.components.forEach((component, name) => {
                if (component.on) {
                    component.on('detection', (data) => {
                        this.monitor.recordDetection(name, data);
                    });
                    component.on('error', (error) => {
                        this.monitor.recordError(name, error);
                    });
                    component.on('performance_metric', (metric) => {
                        this.monitor.recordPerformanceMetric(name, metric);
                    });
                }
            });
        }

        console.log('✅ Component communication established');
    }

    /**
     * Perform initial system validation
     */
    async performInitialValidation() {
        console.log('🧪 Performing initial system validation...');

        if (!this.validationSuite) {
            console.warn('Validation suite not available');
            return;
        }

        try {
            const validationResults = await this.validationSuite.runComprehensiveValidation();

            if (validationResults.overallAccuracy < 0.8) {
                throw new Error(`System validation failed: accuracy ${validationResults.overallAccuracy} below threshold`);
            }

            console.log(`✅ Initial validation passed: ${(validationResults.overallAccuracy * 100).toFixed(1)}% accuracy`);
            this.emit('validation_completed', validationResults);

        } catch (error) {
            console.error('❌ Initial validation failed:', error);
            throw error;
        }
    }

    /**
     * Start the entity communication detection system
     */
    async start() {
        if (!this.isInitialized) {
            await this.initialize();
        }

        if (this.isRunning) {
            console.log('System already running');
            return;
        }

        try {
            console.log('▶️ Starting Entity Communication Detection System...');

            // Start monitoring
            if (this.monitor) {
                await this.monitor.startMonitoring();
            }

            // Start dashboard
            if (this.dashboard) {
                this.dashboard.startDashboard();
            }

            // Start pipeline
            if (this.pipeline) {
                await this.pipeline.start();
            }

            // Start all components
            for (const [name, component] of this.components) {
                if (component.start) {
                    await component.start();
                    console.log(`✅ ${name} started`);
                }
            }

            this.isRunning = true;
            this.systemHealth = 'running';

            console.log('🚀 Entity Communication Detection System is now ACTIVE');
            this.emit('system_started', {
                timestamp: Date.now(),
                mode: this.config.mode
            });

        } catch (error) {
            console.error('❌ Failed to start system:', error);
            this.systemHealth = 'error';
            this.emit('start_failed', error);
            throw error;
        }
    }

    /**
     * Stop the entity communication detection system
     */
    async stop() {
        if (!this.isRunning) {
            console.log('System already stopped');
            return;
        }

        try {
            console.log('⏹️ Stopping Entity Communication Detection System...');

            // Stop all components
            for (const [name, component] of this.components) {
                if (component.stop) {
                    await component.stop();
                    console.log(`🛑 ${name} stopped`);
                }
            }

            // Stop pipeline
            if (this.pipeline) {
                await this.pipeline.stop();
            }

            // Stop dashboard
            if (this.dashboard) {
                this.dashboard.stopDashboard();
            }

            // Stop monitoring
            if (this.monitor) {
                this.monitor.stopMonitoring();
            }

            this.isRunning = false;
            this.systemHealth = 'stopped';

            console.log('✅ Entity Communication Detection System stopped');
            this.emit('system_stopped', { timestamp: Date.now() });

        } catch (error) {
            console.error('❌ Error stopping system:', error);
            this.emit('stop_failed', error);
            throw error;
        }
    }

    /**
     * Process incoming data for entity communication detection
     */
    async processData(data, options = {}) {
        if (!this.isRunning) {
            throw new Error('System not running. Call start() first.');
        }

        try {
            const startTime = Date.now();

            // Process through pipeline
            const results = await this.pipeline.processData(data, {
                enableCorrelation: true,
                enableLearning: true,
                timeout: this.config.pipelineConfig.timeoutMs,
                ...options
            });

            const processingTime = Date.now() - startTime;

            // Emit performance metrics
            this.emit('data_processed', {
                timestamp: Date.now(),
                processingTime,
                dataSize: data.length || JSON.stringify(data).length,
                results
            });

            return results;

        } catch (error) {
            console.error('Error processing data:', error);
            this.emit('processing_error', {
                timestamp: Date.now(),
                error: error.message,
                data: data.slice ? data.slice(0, 100) : data // Truncated for logging
            });
            throw error;
        }
    }

    /**
     * Get comprehensive system status
     */
    getSystemStatus() {
        const status = {
            timestamp: Date.now(),
            health: this.systemHealth,
            initialized: this.isInitialized,
            running: this.isRunning,
            components: {},
            pipeline: null,
            monitoring: null
        };

        // Component status
        for (const [name, component] of this.components) {
            status.components[name] = {
                available: !!component,
                running: component.isRunning || false,
                metrics: component.getMetrics ? component.getMetrics() : null
            };
        }

        // Pipeline status
        if (this.pipeline) {
            status.pipeline = this.pipeline.getStatus();
        }

        // Monitoring status
        if (this.monitor) {
            status.monitoring = this.monitor.getSystemStatus();
        }

        return status;
    }

    /**
     * Restart the system
     */
    async restart() {
        console.log('🔄 Restarting Entity Communication Detection System...');

        await this.stop();
        await new Promise(resolve => setTimeout(resolve, 1000)); // Brief pause
        await this.start();

        console.log('✅ System restarted successfully');
    }

    /**
     * Shutdown the system gracefully
     */
    async shutdown() {
        console.log('🔚 Shutting down Entity Communication Detection System...');

        try {
            // Stop the system
            await this.stop();

            // Export final metrics
            if (this.monitor) {
                const timestamp = new Date().toISOString().replace(/[:.]/g, '-');
                const exportPath = `/tmp/entity_comm_metrics_${timestamp}.json`;
                await this.monitor.exportMetrics(exportPath);
                console.log(`📊 Final metrics exported to ${exportPath}`);
            }

            // Cleanup resources
            this.components.clear();
            this.pipeline = null;
            this.monitor = null;
            this.dashboard = null;
            this.validationSuite = null;

            this.isInitialized = false;
            this.systemHealth = 'shutdown';

            console.log('✅ System shutdown complete');
            this.emit('system_shutdown', { timestamp: Date.now() });

        } catch (error) {
            console.error('❌ Error during shutdown:', error);
            this.emit('shutdown_failed', error);
        }
    }

    /**
     * Run comprehensive system diagnostics
     */
    async runDiagnostics() {
        console.log('🔍 Running system diagnostics...');

        const diagnostics = {
            timestamp: Date.now(),
            systemHealth: this.systemHealth,
            components: {},
            performance: {},
            validation: null,
            recommendations: []
        };

        // Component diagnostics
        for (const [name, component] of this.components) {
            try {
                diagnostics.components[name] = {
                    status: 'healthy',
                    metrics: component.getMetrics ? component.getMetrics() : 'no metrics available',
                    memoryUsage: process.memoryUsage ? process.memoryUsage() : 'unavailable'
                };
            } catch (error) {
                diagnostics.components[name] = {
                    status: 'error',
                    error: error.message
                };
                diagnostics.recommendations.push(`Check ${name} component for errors`);
            }
        }

        // Performance diagnostics
        if (this.monitor) {
            const monitorStatus = this.monitor.getSystemStatus();
            diagnostics.performance = monitorStatus.metrics;

            // Check for performance issues
            if (monitorStatus.alerts.active.length > 0) {
                diagnostics.recommendations.push('Address active alerts');
            }
        }

        // Validation diagnostics
        if (this.validationSuite) {
            try {
                const validationResults = await this.validationSuite.runQuickValidation();
                diagnostics.validation = validationResults;

                if (validationResults.overallAccuracy < 0.85) {
                    diagnostics.recommendations.push('System accuracy below optimal threshold');
                }
            } catch (error) {
                diagnostics.validation = { error: error.message };
                diagnostics.recommendations.push('Validation system needs attention');
            }
        }

        // Generate overall assessment
        const healthyComponents = Object.values(diagnostics.components)
            .filter(comp => comp.status === 'healthy').length;
        const totalComponents = Object.keys(diagnostics.components).length;

        if (healthyComponents < totalComponents * 0.8) {
            diagnostics.recommendations.push('Multiple component failures detected');
        }

        console.log('✅ Diagnostics complete');
        this.emit('diagnostics_completed', diagnostics);

        return diagnostics;
    }
}

/**
 * Factory function to create and configure the entity communication system
 */
function createEntityCommunicationSystem(config = {}) {
    return new EntityCommunicationSystem(config);
}

/**
 * Quick setup for common configurations
 */
const presetConfigurations = {
    development: {
        mode: 'development',
        enableDashboard: true,
        monitoringConfig: {
            monitoringInterval: 2000,
            alertThresholds: {
                detectionAccuracy: 0.75,
                responseTime: 2000
            }
        }
    },

    production: {
        mode: 'production',
        enableDashboard: false,
        monitoringConfig: {
            monitoringInterval: 1000,
            alertThresholds: {
                detectionAccuracy: 0.9,
                responseTime: 500
            }
        }
    },

    research: {
        mode: 'research',
        enableValidation: true,
        enableDashboard: true,
        learningConfig: {
            adaptationRate: 0.05,
            neuralPlasticityEnabled: true
        }
    }
};

module.exports = {
    EntityCommunicationSystem,
    createEntityCommunicationSystem,
    presetConfigurations
};