File vms-v2.js of Package PersistenceOS

/**
 * PersistenceOS VM Management Module v2
 * Virtual Machine management system for PersistenceOS
 * Extracted for Phase 4 modular architecture
 */

/**
 * VM Configuration
 */
const VM_CONFIG = {
    REFRESH_INTERVAL: 15000, // 15 seconds
    API_ENDPOINTS: {
        LIST: '/api/virtualization/vms',
        STATISTICS: '/api/vms/statistics',
        CREATE: '/api/vms/create',
        START: '/api/vms/{name}/start',
        STOP: '/api/vms/{name}/stop',
        DELETE: '/api/vms/{name}/delete',
        DETAILS: '/api/vms/{name}'
    },
    DEBUG: true
};

/**
 * VM Management System
 * Handles all VM operations and state management
 */
class PersistenceVMs {
    constructor() {
        this.vms = [];
        
        this.isRefreshing = false;
        this.refreshInterval = null;
        
        this.init();
    }

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

    /**
     * Get all VMs
     */
    getVMs() {
        return [...this.vms];
    }

    /**
     * Get VM by ID
     */
    getVM(id) {
        return this.vms.find(vm => vm.id === id);
    }

    /**
     * Get VM statistics
     */
    getVMStats() {
        const running = this.vms.filter(vm => vm.status === 'running').length;
        const stopped = this.vms.filter(vm => vm.status === 'stopped').length;
        const total = this.vms.length;
        
        return { running, stopped, total };
    }

    /**
     * Start a VM
     */
    async startVM(id) {
        if (VM_CONFIG.DEBUG) {
            console.log(`🚀 Starting VM: ${id}`);
        }

        const vm = this.getVM(id);
        if (!vm) {
            throw new Error(`VM ${id} not found`);
        }

        if (vm.status === 'running') {
            throw new Error(`VM ${vm.name} is already running`);
        }

        // Simulate API call
        await this.simulateAPICall();
        
        vm.status = 'running';
        vm.ip = `192.168.122.${Math.floor(Math.random() * 100) + 10}`;
        vm.uptime = '0 minutes';
        
        this.notifyVMUpdate();
        
        if (VM_CONFIG.DEBUG) {
            console.log(`✅ VM ${vm.name} started successfully`);
        }
    }

    /**
     * Stop a VM
     */
    async stopVM(id) {
        if (VM_CONFIG.DEBUG) {
            console.log(`🛑 Stopping VM: ${id}`);
        }

        const vm = this.getVM(id);
        if (!vm) {
            throw new Error(`VM ${id} not found`);
        }

        if (vm.status === 'stopped') {
            throw new Error(`VM ${vm.name} is already stopped`);
        }

        // Simulate API call
        await this.simulateAPICall();
        
        vm.status = 'stopped';
        vm.ip = 'N/A';
        vm.uptime = 'N/A';
        
        this.notifyVMUpdate();
        
        if (VM_CONFIG.DEBUG) {
            console.log(`✅ VM ${vm.name} stopped successfully`);
        }
    }

    /**
     * Delete a VM
     */
    async deleteVM(id) {
        if (VM_CONFIG.DEBUG) {
            console.log(`🗑️ Deleting VM: ${id}`);
        }

        const vmIndex = this.vms.findIndex(vm => vm.id === id);
        if (vmIndex === -1) {
            throw new Error(`VM ${id} not found`);
        }

        const vm = this.vms[vmIndex];
        
        // Simulate API call
        await this.simulateAPICall();
        
        this.vms.splice(vmIndex, 1);
        
        this.notifyVMUpdate();
        
        if (VM_CONFIG.DEBUG) {
            console.log(`✅ VM ${vm.name} deleted successfully`);
        }
    }

    /**
     * Refresh VM list
     */
    async refreshVMs() {
        if (this.isRefreshing) return;
        
        this.isRefreshing = true;
        
        if (VM_CONFIG.DEBUG) {
            console.log('🔄 Refreshing VM list...');
        }

        try {
            // Simulate API call with random updates
            await this.simulateVMRefresh();
            
            if (VM_CONFIG.DEBUG) {
                console.log('✅ VM list refreshed successfully');
            }
            
            this.notifyVMUpdate();
            
        } catch (error) {
            if (VM_CONFIG.DEBUG) {
                console.error('❌ VM refresh failed:', error);
            }
            throw error;
        } finally {
            this.isRefreshing = false;
        }
    }

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

    /**
     * Simulate VM refresh with random updates
     */
    async simulateVMRefresh() {
        return new Promise((resolve) => {
            setTimeout(() => {
                // Update running VMs with new uptime
                this.vms.forEach(vm => {
                    if (vm.status === 'running') {
                        const hours = Math.floor(Math.random() * 24);
                        const minutes = Math.floor(Math.random() * 60);
                        vm.uptime = `${hours} hours, ${minutes} minutes`;
                    }
                });
                
                resolve();
            }, 1000);
        });
    }

    /**
     * Start auto-refresh timer
     */
    startAutoRefresh() {
        if (this.refreshInterval) {
            clearInterval(this.refreshInterval);
        }
        
        this.refreshInterval = setInterval(() => {
            this.refreshVMs().catch(error => {
                if (VM_CONFIG.DEBUG) {
                    console.warn('⚠️ VM auto-refresh failed:', error);
                }
            });
        }, VM_CONFIG.REFRESH_INTERVAL);
        
        if (VM_CONFIG.DEBUG) {
            console.log('⏰ VM auto-refresh started (15s interval)');
        }
    }

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

    /**
     * Notify VM update listeners
     */
    notifyVMUpdate() {
        // Dispatch custom event for Vue reactivity
        window.dispatchEvent(new CustomEvent('vmDataUpdate', {
            detail: {
                vms: this.getVMs(),
                stats: this.getVMStats()
            }
        }));
    }

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

// Create global VM management instance
window.PersistenceVMs = new PersistenceVMs();

// Backward compatibility
window.VMs = window.PersistenceVMs;

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

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