File network-v2.js of Package PersistenceOS

/**
 * PersistenceOS Network Management Module v2
 * Network interface and configuration management for PersistenceOS
 * Extracted for Phase 4 modular architecture
 */

/**
 * Network Configuration
 */
const NETWORK_CONFIG = {
    REFRESH_INTERVAL: 10000, // 10 seconds
    API_ENDPOINTS: {
        INTERFACES: '/api/network/interfaces',
        CONNECTIONS: '/api/network/connections',
        ROUTES: '/api/network/routes',
        DNS: '/api/network/dns',
        FIREWALL: '/api/network/firewall/status'
    },
    DEBUG: true
};

/**
 * Network Management System
 * Handles all network operations and state management
 */
class PersistenceNetwork {
    constructor() {
        this.interfaces = [];
        this.connections = [];
        this.routes = [];
        this.dnsServers = [];
        this.firewallStatus = 'unknown';
        
        this.isRefreshing = false;
        this.refreshInterval = null;
        
        this.init();
    }

    init() {
        if (NETWORK_CONFIG.DEBUG) {
            console.log('🌐 PersistenceOS Network Management Module v2 initialized');
        }
        
        // Start auto-refresh
        this.startAutoRefresh();
    }

    /**
     * Get all network interfaces
     */
    getInterfaces() {
        return [...this.interfaces];
    }

    /**
     * Get interface by ID
     */
    getInterface(id) {
        return this.interfaces.find(iface => iface.id === id);
    }

    /**
     * Get all network connections
     */
    getConnections() {
        return [...this.connections];
    }

    /**
     * Get all routes
     */
    getRoutes() {
        return [...this.routes];
    }

    /**
     * Get DNS servers
     */
    getDNSServers() {
        return [...this.dnsServers];
    }

    /**
     * Get firewall status
     */
    getFirewallStatus() {
        return this.firewallStatus;
    }

    /**
     * Get network statistics for dashboard
     */
    getNetworkStats() {
        const activeInterfaces = this.interfaces.filter(iface => 
            iface.status === 'up' && iface.type !== 'loopback'
        );
        
        return {
            interfaces: activeInterfaces.map(iface => ({
                name: iface.name,
                rx: iface.rx,
                tx: iface.tx
            }))
        };
    }

    /**
     * Configure network interface
     */
    async configureInterface(id, config) {
        if (NETWORK_CONFIG.DEBUG) {
            console.log(`⚙️ Configuring interface ${id}:`, config);
        }

        const iface = this.getInterface(id);
        if (!iface) {
            throw new Error(`Interface ${id} not found`);
        }

        // Simulate API call
        await this.simulateAPICall();
        
        // Update interface configuration
        Object.assign(iface, config);
        
        this.notifyNetworkUpdate();
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log(`✅ Interface ${id} configured successfully`);
        }
    }

    /**
     * Enable/disable interface
     */
    async toggleInterface(id, enable) {
        if (NETWORK_CONFIG.DEBUG) {
            console.log(`${enable ? '🟢' : '🔴'} ${enable ? 'Enabling' : 'Disabling'} interface: ${id}`);
        }

        const iface = this.getInterface(id);
        if (!iface) {
            throw new Error(`Interface ${id} not found`);
        }

        // Simulate API call
        await this.simulateAPICall();
        
        iface.status = enable ? 'up' : 'down';
        if (!enable) {
            iface.rx = '0.0 MB/s';
            iface.tx = '0.0 MB/s';
        }
        
        this.notifyNetworkUpdate();
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log(`✅ Interface ${id} ${enable ? 'enabled' : 'disabled'} successfully`);
        }
    }

    /**
     * Update DNS servers
     */
    async updateDNS(servers) {
        if (NETWORK_CONFIG.DEBUG) {
            console.log('🔧 Updating DNS servers:', servers);
        }

        if (!Array.isArray(servers) || servers.length === 0) {
            throw new Error('Invalid DNS servers: must be a non-empty array');
        }

        // Simulate API call
        await this.simulateAPICall();
        
        this.dnsServers = [...servers];
        this.notifyNetworkUpdate();
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log('✅ DNS servers updated successfully');
        }
    }

    /**
     * Toggle firewall
     */
    async toggleFirewall(enable) {
        if (NETWORK_CONFIG.DEBUG) {
            console.log(`🛡️ ${enable ? 'Enabling' : 'Disabling'} firewall`);
        }

        // Simulate API call
        await this.simulateAPICall();
        
        this.firewallStatus = enable ? 'active' : 'inactive';
        this.notifyNetworkUpdate();
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log(`✅ Firewall ${enable ? 'enabled' : 'disabled'} successfully`);
        }
    }

    /**
     * Refresh network information
     */
    async refreshNetwork() {
        if (this.isRefreshing) return;
        
        this.isRefreshing = true;
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log('🔄 Refreshing network information...');
        }

        try {
            // Simulate API call with random updates
            await this.simulateNetworkRefresh();
            
            if (NETWORK_CONFIG.DEBUG) {
                console.log('✅ Network information refreshed successfully');
            }
            
            this.notifyNetworkUpdate();
            
        } catch (error) {
            if (NETWORK_CONFIG.DEBUG) {
                console.error('❌ Network refresh failed:', error);
            }
            throw error;
        } finally {
            this.isRefreshing = false;
        }
    }

    /**
     * Simulate API call delay
     */
    async simulateAPICall() {
        return new Promise((resolve) => {
            setTimeout(resolve, 800 + Math.random() * 1000);
        });
    }

    /**
     * Simulate network refresh with random updates
     */
    async simulateNetworkRefresh() {
        return new Promise((resolve) => {
            setTimeout(() => {
                // Update interface traffic with random values
                this.interfaces.forEach(iface => {
                    if (iface.status === 'up' && iface.type !== 'loopback') {
                        iface.rx = (Math.random() * 5).toFixed(1) + ' MB/s';
                        iface.tx = (Math.random() * 2).toFixed(1) + ' MB/s';
                        
                        // Update total bytes
                        const rxGB = (Math.random() * 10).toFixed(1);
                        const txGB = (Math.random() * 5).toFixed(1);
                        iface.rx_bytes = rxGB + ' GB';
                        iface.tx_bytes = txGB + ' GB';
                    }
                });
                
                resolve();
            }, 800);
        });
    }

    /**
     * Start auto-refresh timer
     */
    startAutoRefresh() {
        if (this.refreshInterval) {
            clearInterval(this.refreshInterval);
        }
        
        this.refreshInterval = setInterval(() => {
            this.refreshNetwork().catch(error => {
                if (NETWORK_CONFIG.DEBUG) {
                    console.warn('⚠️ Network auto-refresh failed:', error);
                }
            });
        }, NETWORK_CONFIG.REFRESH_INTERVAL);
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log('⏰ Network auto-refresh started (10s interval)');
        }
    }

    /**
     * Stop auto-refresh timer
     */
    stopAutoRefresh() {
        if (this.refreshInterval) {
            clearInterval(this.refreshInterval);
            this.refreshInterval = null;
            
            if (NETWORK_CONFIG.DEBUG) {
                console.log('⏹️ Network auto-refresh stopped');
            }
        }
    }

    /**
     * Notify network update listeners
     */
    notifyNetworkUpdate() {
        // Dispatch custom event for Vue reactivity
        window.dispatchEvent(new CustomEvent('networkDataUpdate', {
            detail: {
                interfaces: this.getInterfaces(),
                connections: this.getConnections(),
                routes: this.getRoutes(),
                dns: this.getDNSServers(),
                firewall: this.getFirewallStatus(),
                stats: this.getNetworkStats()
            }
        }));
    }

    /**
     * Cleanup resources
     */
    destroy() {
        this.stopAutoRefresh();
        
        if (NETWORK_CONFIG.DEBUG) {
            console.log('🗑️ Network Management module destroyed');
        }
    }
}

// Create global network management instance
window.PersistenceNetwork = new PersistenceNetwork();

// Backward compatibility
window.Network = window.PersistenceNetwork;

// Export for module systems
if (typeof module !== 'undefined' && module.exports) {
    module.exports = { PersistenceNetwork, NETWORK_CONFIG };
}

console.log('✅ PersistenceOS Network Management Module v2 loaded successfully');