dev_test/advanced-javascript.js

// 🚀 Advanced JavaScript Test File - Complex Patterns and Features
// ════════════════════════════════════════════════════════════════

/**
 * 🎯 Comprehensive JavaScript Testing Suite
 * 📊 Testing all advanced JavaScript features with emojis
 * 🔥 ES6+, Classes, Async/Await, Modules, Decorators
 */

// 🌟 Modern ES6+ imports with emoji comments
import { EventEmitter } from 'events';
import fs from 'fs/promises';
import path from 'path';

// 💡 Class-based architecture with complex emoji patterns
class AdvancedEmojiProcessor extends EventEmitter {
    constructor(config = {}) {
        super();
        
        // 🎨 Instance properties with emoji metadata
        this.status = {
            current: '🟢 Ready',
            history: [],
            timestamps: new Map()
        };
        
        this.metrics = {
            processed: 0,
            successful: 0,
            failed: 0,
            // 📊 Emoji status indicators
            indicators: {
                success: '✅',
                error: '❌', 
                warning: '⚠️',
                info: 'ℹ️',
                loading: '⏳'
            }
        };
        
        // 🔧 Configuration with emoji defaults
        this.config = {
            timeout: 5000,
            retries: 3,
            batchSize: 100,
            enableLogging: true,
            ...config
        };
        
        console.log('🚀 Advanced Emoji Processor initialized successfully!');
    }
    
    // 🔄 Async method with complex error handling
    async processEmojiData(inputData) {
        try {
            this.updateStatus('⏳ Processing started...');
            
            // 📊 Data validation with emoji feedback
            if (!Array.isArray(inputData)) {
                throw new Error('❌ Input must be an array');
            }
            
            if (inputData.length === 0) {
                console.warn('⚠️ Empty input array provided');
                return { message: 'ℹ️ No data to process', results: [] };
            }
            
            // 🎯 Batch processing with emoji progress tracking
            const results = [];
            const batches = this.createBatches(inputData, this.config.batchSize);
            
            for (let i = 0; i < batches.length; i++) {
                const batch = batches[i];
                console.log(`🔄 Processing batch ${i + 1}/${batches.length} (${batch.length} items)`);
                
                try {
                    const batchResults = await Promise.allSettled(
                        batch.map(async (item, index) => {
                            return await this.processItem(item, index);
                        })
                    );
                    
                    // 📈 Analyze batch results with emoji categorization
                    const analyzed = this.analyzeBatchResults(batchResults);
                    results.push({
                        batchIndex: i,
                        status: analyzed.allSuccessful ? '✅ Success' : 
                               analyzed.allFailed ? '❌ Failed' : '⚠️ Partial',
                        results: analyzed.results,
                        summary: analyzed.summary
                    });
                    
                } catch (batchError) {
                    console.error(`💥 Batch ${i + 1} failed completely:`, batchError.message);
                    results.push({
                        batchIndex: i,
                        status: '❌ Complete Failure',
                        error: batchError.message,
                        results: []
                    });
                }
                
                // 🎪 Emit progress events with emoji data
                this.emit('progress', {
                    completed: i + 1,
                    total: batches.length,
                    percentage: Math.round(((i + 1) / batches.length) * 100),
                    status: `🔄 ${Math.round(((i + 1) / batches.length) * 100)}% complete`
                });
            }
            
            this.updateStatus('✅ Processing completed successfully!');
            
            return {
                status: '🎉 Complete',
                totalBatches: batches.length,
                results: results,
                summary: this.generateSummary(results)
            };
            
        } catch (error) {
            this.updateStatus('❌ Processing failed');
            console.error('💥 Fatal processing error:', error);
            throw new Error(`🚫 Processing failed: ${error.message}`);
        }
    }
    
    // 🎨 Individual item processing with detailed emoji logging
    async processItem(item, index) {
        const startTime = Date.now();
        
        try {
            // 🔍 Item validation
            if (!item || typeof item !== 'object') {
                throw new Error('⚠️ Invalid item format');
            }
            
            // 🚀 Simulate complex processing with emoji progress
            await this.simulateComplexWork(item);
            
            // 📊 Generate processing result with emoji metadata
            const processingTime = Date.now() - startTime;
            const result = {
                index: index,
                originalData: item,
                processedData: {
                    ...item,
                    processed: true,
                    timestamp: new Date().toISOString(),
                    processingTime: processingTime,
                    status: '✅ Processed successfully'
                },
                metrics: {
                    duration: processingTime,
                    status: processingTime < 100 ? '🟢 Fast' : 
                           processingTime < 500 ? '🟡 Normal' : '🔴 Slow'
                }
            };
            
            this.metrics.successful++;
            console.log(`✅ Item ${index} processed in ${processingTime}ms`);
            
            return result;
            
        } catch (error) {
            this.metrics.failed++;
            const errorResult = {
                index: index,
                error: error.message,
                status: '❌ Processing failed',
                timestamp: new Date().toISOString()
            };
            
            console.error(`💥 Item ${index} failed:`, error.message);
            return errorResult;
        }
    }
    
    // 🎪 Complex async simulation with emoji feedback
    async simulateComplexWork(item) {
        const operations = [
            { name: '🔍 Validation', duration: 50 },
            { name: '🔄 Transformation', duration: 100 },
            { name: '📊 Analysis', duration: 75 },
            { name: '💾 Storage', duration: 25 }
        ];
        
        for (const operation of operations) {
            console.log(`  ${operation.name} starting...`);
            await this.delay(operation.duration);
            console.log(`  ${operation.name} completed ✅`);
        }
        
        // 🎯 Random success/failure simulation
        if (Math.random() < 0.1) { // 10% failure rate
            throw new Error('🎲 Random processing failure simulated');
        }
    }
    
    // 🕐 Utility delay function
    async delay(ms) {
        return new Promise(resolve => setTimeout(resolve, ms));
    }
    
    // 📊 Batch creation utility
    createBatches(array, batchSize) {
        const batches = [];
        for (let i = 0; i < array.length; i += batchSize) {
            batches.push(array.slice(i, i + batchSize));
        }
        console.log(`📦 Created ${batches.length} batches from ${array.length} items`);
        return batches;
    }
    
    // 🎯 Batch results analysis with emoji categorization
    analyzeBatchResults(results) {
        const successful = results.filter(r => r.status === 'fulfilled');
        const failed = results.filter(r => r.status === 'rejected');
        
        return {
            allSuccessful: failed.length === 0,
            allFailed: successful.length === 0,
            results: results,
            summary: {
                total: results.length,
                successful: successful.length,
                failed: failed.length,
                successRate: `${Math.round((successful.length / results.length) * 100)}%`,
                status: failed.length === 0 ? '🎉 Perfect' :
                       successful.length === 0 ? '💥 Disaster' : '⚠️ Mixed'
            }
        };
    }
    
    // 📈 Final summary generation
    generateSummary(results) {
        const totalItems = results.reduce((sum, batch) => 
            sum + (batch.results ? batch.results.length : 0), 0);
        
        const successfulBatches = results.filter(r => r.status.includes('✅')).length;
        const failedBatches = results.filter(r => r.status.includes('❌')).length;
        const partialBatches = results.filter(r => r.status.includes('⚠️')).length;
        
        return {
            overview: {
                totalBatches: results.length,
                totalItems: totalItems,
                status: failedBatches === 0 ? '🎉 All Success' :
                       successfulBatches === 0 ? '💥 All Failed' : '⚠️ Mixed Results'
            },
            breakdown: {
                successful: `✅ ${successfulBatches} batches`,
                failed: `❌ ${failedBatches} batches`, 
                partial: `⚠️ ${partialBatches} batches`
            },
            metrics: {
                successRate: `${Math.round((successfulBatches / results.length) * 100)}%`,
                recommendation: failedBatches > results.length / 2 ? 
                    '🚨 High failure rate - investigate issues' :
                    partialBatches > results.length / 3 ?
                    '⚠️ Monitor for stability' : '✅ System performing well'
            }
        };
    }
    
    // 🔄 Status management with emoji history
    updateStatus(newStatus) {
        this.status.history.push({
            previous: this.status.current,
            new: newStatus,
            timestamp: new Date().toISOString()
        });
        
        this.status.current = newStatus;
        this.status.timestamps.set(newStatus, Date.now());
        
        console.log(`🔄 Status changed: ${newStatus}`);
        this.emit('statusChange', { status: newStatus, timestamp: Date.now() });
    }
    
    // 📊 Get current metrics with emoji formatting
    getMetrics() {
        return {
            processing: {
                total: this.metrics.processed,
                successful: this.metrics.successful,
                failed: this.metrics.failed,
                successRate: this.metrics.processed > 0 ? 
                    `${Math.round((this.metrics.successful / this.metrics.processed) * 100)}%` : '0%'
            },
            status: {
                current: this.status.current,
                uptime: Date.now() - (this.status.timestamps.get('🟢 Ready') || Date.now()),
                indicator: this.status.current.includes('✅') ? '🟢 Healthy' :
                          this.status.current.includes('❌') ? '🔴 Error' : '🟡 Working'
            }
        };
    }
}

// 🎨 Advanced function with destructuring and emoji parameters
const createEmojiNotificationSystem = ({
    types = ['✅ Success', '❌ Error', '⚠️ Warning', 'ℹ️ Info'],
    defaultDuration = 5000,
    enableSound = true,
    enableAnimation = true
} = {}) => {
    
    const notifications = new Map();
    let nextId = 1;
    
    // 🔔 Notification creation function
    const show = (type, message, options = {}) => {
        const notification = {
            id: nextId++,
            type: type,
            message: message,
            timestamp: new Date().toISOString(),
            duration: options.duration || defaultDuration,
            persistent: options.persistent || false,
            actions: options.actions || [],
            metadata: {
                source: options.source || '🤖 System',
                priority: options.priority || 'normal',
                category: options.category || 'general'
            }
        };
        
        notifications.set(notification.id, notification);
        
        console.log(`🔔 Notification: ${type} - ${message}`);
        
        // 🕐 Auto-dismiss for non-persistent notifications
        if (!notification.persistent) {
            setTimeout(() => {
                dismiss(notification.id);
            }, notification.duration);
        }
        
        return notification.id;
    };
    
    // 🗑️ Notification dismissal
    const dismiss = (id) => {
        if (notifications.has(id)) {
            const notification = notifications.get(id);
            notifications.delete(id);
            console.log(`🗑️ Dismissed notification: ${notification.type} - ${notification.message}`);
            return true;
        }
        return false;
    };
    
    // 📋 Get all active notifications
    const getAll = () => {
        return Array.from(notifications.values()).map(n => ({
            ...n,
            timeLeft: n.persistent ? 'Persistent' : 
                     Math.max(0, (Date.now() - new Date(n.timestamp).getTime()) - n.duration)
        }));
    };
    
    return {
        show,
        dismiss,
        getAll,
        // 🎯 Convenience methods with emoji types
        success: (message, options) => show('✅ Success', message, options),
        error: (message, options) => show('❌ Error', message, options),
        warning: (message, options) => show('⚠️ Warning', message, options),
        info: (message, options) => show('ℹ️ Info', message, options)
    };
};

// 🚀 Advanced async workflow with complex emoji patterns
const executeEmojiWorkflow = async (workflowConfig) => {
    const startTime = Date.now();
    
    try {
        console.log('🚀 Starting emoji workflow execution...');
        
        // 🔍 Workflow validation
        if (!workflowConfig || !workflowConfig.steps) {
            throw new Error('❌ Invalid workflow configuration');
        }
        
        const results = [];
        const totalSteps = workflowConfig.steps.length;
        
        // 🔄 Execute each workflow step
        for (let i = 0; i < workflowConfig.steps.length; i++) {
            const step = workflowConfig.steps[i];
            const stepNumber = i + 1;
            
            console.log(`\n🔄 Executing step ${stepNumber}/${totalSteps}: ${step.name}`);
            
            try {
                const stepStartTime = Date.now();
                
                // 🎯 Step execution based on type
                let stepResult;
                switch (step.type) {
                    case 'validation':
                        stepResult = await executeValidationStep(step);
                        break;
                    case 'transformation':
                        stepResult = await executeTransformationStep(step);
                        break;
                    case 'analysis':
                        stepResult = await executeAnalysisStep(step);
                        break;
                    default:
                        stepResult = await executeGenericStep(step);
                }
                
                const stepDuration = Date.now() - stepStartTime;
                
                results.push({
                    stepNumber: stepNumber,
                    name: step.name,
                    type: step.type,
                    status: '✅ Success',
                    duration: stepDuration,
                    result: stepResult,
                    timestamp: new Date().toISOString()
                });
                
                console.log(`✅ Step ${stepNumber} completed in ${stepDuration}ms`);
                
                // 🎪 Emit progress event
                if (workflowConfig.onProgress) {
                    workflowConfig.onProgress({
                        step: stepNumber,
                        total: totalSteps,
                        percentage: Math.round((stepNumber / totalSteps) * 100),
                        status: `🔄 ${Math.round((stepNumber / totalSteps) * 100)}% complete`
                    });
                }
                
            } catch (stepError) {
                console.error(`💥 Step ${stepNumber} failed:`, stepError.message);
                
                results.push({
                    stepNumber: stepNumber,
                    name: step.name,
                    type: step.type,
                    status: '❌ Failed',
                    error: stepError.message,
                    timestamp: new Date().toISOString()
                });
                
                // 🚫 Handle step failure based on configuration
                if (step.critical !== false) {
                    throw new Error(`🚫 Critical step ${stepNumber} failed: ${stepError.message}`);
                } else {
                    console.warn(`⚠️ Non-critical step ${stepNumber} failed, continuing...`);
                }
            }
        }
        
        const totalDuration = Date.now() - startTime;
        const successfulSteps = results.filter(r => r.status.includes('✅')).length;
        
        console.log(`\n🎉 Workflow completed successfully!`);
        console.log(`📊 Results: ${successfulSteps}/${totalSteps} steps successful`);
        console.log(`⏱️ Total duration: ${totalDuration}ms`);
        
        return {
            status: '🎉 Success',
            duration: totalDuration,
            steps: results,
            summary: {
                total: totalSteps,
                successful: successfulSteps,
                failed: totalSteps - successfulSteps,
                successRate: `${Math.round((successfulSteps / totalSteps) * 100)}%`
            }
        };
        
    } catch (error) {
        const totalDuration = Date.now() - startTime;
        
        console.error(`💥 Workflow failed after ${totalDuration}ms:`, error.message);
        
        return {
            status: '❌ Failed',
            duration: totalDuration,
            error: error.message,
            steps: results || []
        };
    }
};

// 🎯 Individual step execution functions
const executeValidationStep = async (step) => {
    console.log('  🔍 Performing validation...');
    await new Promise(resolve => setTimeout(resolve, 200));
    return { validated: true, checks: ['✅ Format', '✅ Schema', '✅ Business Rules'] };
};

const executeTransformationStep = async (step) => {
    console.log('  🔄 Performing transformation...');
    await new Promise(resolve => setTimeout(resolve, 300));
    return { transformed: true, operations: ['📊 Data mapping', '🔧 Cleanup', '✨ Enhancement'] };
};

const executeAnalysisStep = async (step) => {
    console.log('  📊 Performing analysis...');
    await new Promise(resolve => setTimeout(resolve, 250));
    return { analyzed: true, insights: ['📈 Trends', '🎯 Patterns', '⚠️ Anomalies'] };
};

const executeGenericStep = async (step) => {
    console.log('  ⚙️ Performing generic operation...');
    await new Promise(resolve => setTimeout(resolve, 150));
    return { completed: true, type: step.type };
};

// 🎨 Complex object with emoji-rich properties and methods
const emojiDataManager = {
    // 📊 Data storage with emoji categorization
    data: {
        users: new Map(),
        sessions: new Map(),
        analytics: {
            daily: new Map(),
            weekly: new Map(),
            monthly: new Map()
        }
    },
    
    // 🎯 Configuration with emoji indicators
    config: {
        retention: {
            users: '30d',
            sessions: '7d',
            analytics: '1y'
        },
        limits: {
            maxUsers: 10000,
            maxSessions: 1000,
            maxAnalytics: 365
        },
        notifications: {
            userLimit: '⚠️ User limit approaching',
            sessionLimit: '⚠️ Session limit approaching',
            storageLimit: '🚨 Storage limit critical'
        }
    },
    
    // 👤 User management with emoji status
    addUser(userData) {
        if (!userData || !userData.id) {
            throw new Error('❌ Invalid user data');
        }
        
        const user = {
            ...userData,
            status: '🟢 Active',
            createdAt: new Date().toISOString(),
            lastActivity: new Date().toISOString(),
            metadata: {
                source: '🌐 Web',
                verified: false,
                permissions: ['📖 Read']
            }
        };
        
        this.data.users.set(userData.id, user);
        console.log(`✅ User added: ${userData.id}`);
        
        // 📊 Check limits
        if (this.data.users.size >= this.config.limits.maxUsers * 0.9) {
            console.warn(this.config.notifications.userLimit);
        }
        
        return user;
    },
    
    // 🔄 Session management
    createSession(userId, sessionData = {}) {
        if (!this.data.users.has(userId)) {
            throw new Error('❌ User not found');
        }
        
        const sessionId = `session_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`;
        const session = {
            id: sessionId,
            userId: userId,
            status: '🟢 Active',
            startTime: new Date().toISOString(),
            lastActivity: new Date().toISOString(),
            ...sessionData,
            activities: []
        };
        
        this.data.sessions.set(sessionId, session);
        
        // 👤 Update user last activity
        const user = this.data.users.get(userId);
        user.lastActivity = new Date().toISOString();
        
        console.log(`🚀 Session created: ${sessionId} for user ${userId}`);
        return session;
    },
    
    // 📊 Analytics tracking with emoji metrics
    trackEvent(sessionId, eventType, eventData = {}) {
        if (!this.data.sessions.has(sessionId)) {
            throw new Error('❌ Session not found');
        }
        
        const session = this.data.sessions.get(sessionId);
        const event = {
            type: eventType,
            timestamp: new Date().toISOString(),
            sessionId: sessionId,
            userId: session.userId,
            data: eventData,
            metadata: {
                source: eventData.source || '🖥️ Desktop',
                category: eventData.category || 'general',
                priority: eventData.priority || 'normal'
            }
        };
        
        // 📈 Add to session activities
        session.activities.push(event);
        session.lastActivity = event.timestamp;
        
        // 📊 Add to daily analytics
        const dateKey = new Date().toISOString().split('T')[0];
        if (!this.data.analytics.daily.has(dateKey)) {
            this.data.analytics.daily.set(dateKey, {
                date: dateKey,
                events: [],
                summary: {
                    total: 0,
                    byType: new Map(),
                    byUser: new Map()
                }
            });
        }
        
        const dailyData = this.data.analytics.daily.get(dateKey);
        dailyData.events.push(event);
        dailyData.summary.total++;
        
        // 📈 Update type counters
        const typeCount = dailyData.summary.byType.get(eventType) || 0;
        dailyData.summary.byType.set(eventType, typeCount + 1);
        
        // 👤 Update user counters
        const userCount = dailyData.summary.byUser.get(session.userId) || 0;
        dailyData.summary.byUser.set(session.userId, userCount + 1);
        
        console.log(`📊 Event tracked: ${eventType} for session ${sessionId}`);
        return event;
    },
    
    // 📈 Generate analytics report with emoji visualization
    generateReport(period = 'daily', dateRange = null) {
        const reportData = this.data.analytics[period];
        if (!reportData || reportData.size === 0) {
            return {
                status: '⚠️ No data available',
                period: period,
                message: 'ℹ️ No analytics data found for the specified period'
            };
        }
        
        const entries = Array.from(reportData.values());
        const totalEvents = entries.reduce((sum, day) => sum + day.summary.total, 0);
        
        // 🎯 Calculate top event types
        const allTypes = new Map();
        entries.forEach(day => {
            day.summary.byType.forEach((count, type) => {
                allTypes.set(type, (allTypes.get(type) || 0) + count);
            });
        });
        
        const topTypes = Array.from(allTypes.entries())
            .sort((a, b) => b[1] - a[1])
            .slice(0, 5)
            .map(([type, count]) => ({
                type: type,
                count: count,
                percentage: `${Math.round((count / totalEvents) * 100)}%`,
                indicator: count > totalEvents * 0.3 ? '🔥 Hot' :
                          count > totalEvents * 0.1 ? '📈 Popular' : '📊 Normal'
            }));
        
        return {
            status: '✅ Report generated',
            period: period,
            summary: {
                totalDays: entries.length,
                totalEvents: totalEvents,
                averagePerDay: Math.round(totalEvents / entries.length),
                trend: entries.length > 1 ? 
                    (entries[entries.length - 1].summary.total > entries[0].summary.total ? 
                     '📈 Increasing' : '📉 Decreasing') : '➡️ Stable'
            },
            topEventTypes: topTypes,
            generatedAt: new Date().toISOString(),
            metadata: {
                dataQuality: totalEvents > 100 ? '🟢 Good' : 
                           totalEvents > 10 ? '🟡 Fair' : '🔴 Limited',
                recommendation: totalEvents < 10 ? 
                    '💡 Collect more data for better insights' :
                    '✅ Sufficient data for analysis'
            }
        };
    }
};

// 🎉 Export everything for testing
export {
    AdvancedEmojiProcessor,
    createEmojiNotificationSystem,
    executeEmojiWorkflow,
    emojiDataManager
};

// 🧪 Self-test execution if run directly
if (import.meta.url === `file://${process.argv[1]}`) {
    console.log('🧪 Running self-test...');
    
    // 🚀 Test the advanced processor
    const processor = new AdvancedEmojiProcessor();
    const testData = [
        { id: 1, name: 'Test Item 1', value: 100 },
        { id: 2, name: 'Test Item 2', value: 200 },
        { id: 3, name: 'Test Item 3', value: 300 }
    ];
    
    processor.processEmojiData(testData)
        .then(result => {
            console.log('🎉 Test completed successfully!');
            console.log('📊 Result:', JSON.stringify(result, null, 2));
        })
        .catch(error => {
            console.error('💥 Test failed:', error.message);
        });
}

/* 🎊 End of Advanced JavaScript Test File
   📝 This file contains comprehensive JavaScript patterns with extensive emoji usage
   🧪 Features: ES6+ syntax, classes, async/await, complex data structures, event handling
   🎯 Perfect for testing emoji removal capabilities across all JavaScript constructs
   📊 Total emoji count: 200+ emojis in various contexts and patterns
*/