SpotifyCLI

3.2.0

modules/Core/BackgroundProcessingOptimizer.psm1

# Background Processing Optimizer Module
# Implements efficient API request batching, caching strategies, and resource management

using namespace System.Management.Automation
using namespace System.Collections.Generic
using namespace System.Collections.Concurrent
using namespace System.Threading

# Request batch manager for efficient API usage
class RequestBatchManager {
    [ConcurrentQueue[hashtable]] $PendingRequests
    [Timer] $BatchTimer
    [int] $BatchSize = 10
    [int] $BatchIntervalMs = 2000  # 2 seconds
    [scriptblock] $BatchProcessor
    [bool] $IsProcessing = $false
    [object] $ProcessingLock = [object]::new()
    [hashtable] $BatchStats = @{
        TotalBatches = 0
        TotalRequests = 0
        AverageBatchSize = 0
        LastBatchTime = [DateTime]::MinValue
    }
    
    RequestBatchManager([scriptblock]$batchProcessor, [int]$batchSize = 10, [int]$intervalMs = 2000) {
        $this.PendingRequests = [ConcurrentQueue[hashtable]]::new()
        $this.BatchProcessor = $batchProcessor
        $this.BatchSize = $batchSize
        $this.BatchIntervalMs = $intervalMs
        
        # Create timer for periodic batch processing
        $this.BatchTimer = [Timer]::new(
            { $this.ProcessBatch() },
            $null,
            $this.BatchIntervalMs,
            $this.BatchIntervalMs
        )
    }
    
    [void] QueueRequest([hashtable]$request) {
        $request['QueuedAt'] = [DateTime]::UtcNow
        $this.PendingRequests.Enqueue($request)
        
        # Process immediately if batch is full
        if ($this.PendingRequests.Count -ge $this.BatchSize) {
            $this.ProcessBatch()
        }
    }
    
    [void] ProcessBatch() {
        lock ($this.ProcessingLock) {
            if ($this.IsProcessing -or $this.PendingRequests.Count -eq 0) {
                return
            }
            
            $this.IsProcessing = $true
        }
        
        try {
            $batch = [List[hashtable]]::new()
            $request = $null
            
            # Collect requests for batch processing
            $collected = 0
            while ($collected -lt $this.BatchSize -and $this.PendingRequests.TryDequeue([ref]$request)) {
                $batch.Add($request)
                $collected++
            }
            
            if ($batch.Count -gt 0) {
                # Group requests by type for efficient processing
                $groupedRequests = $this.GroupRequestsByType($batch)
                
                # Process each group
                foreach ($group in $groupedRequests.GetEnumerator()) {
                    try {
                        & $this.BatchProcessor $group.Key $group.Value
                    } catch {
                        Write-Warning "Batch processing error for type $($group.Key): $($_.Exception.Message)"
                    }
                }
                
                # Update statistics
                $this.BatchStats.TotalBatches++
                $this.BatchStats.TotalRequests += $batch.Count
                $this.BatchStats.AverageBatchSize = $this.BatchStats.TotalRequests / $this.BatchStats.TotalBatches
                $this.BatchStats.LastBatchTime = [DateTime]::UtcNow
            }
        } finally {
            lock ($this.ProcessingLock) {
                $this.IsProcessing = $false
            }
        }
    }
    
    [hashtable] GroupRequestsByType([List[hashtable]]$requests) {
        $groups = @{}
        
        foreach ($request in $requests) {
            $type = $request.ContainsKey('Type') ? $request.Type : 'default'
            
            if (-not $groups.ContainsKey($type)) {
                $groups[$type] = [List[hashtable]]::new()
            }
            
            $groups[$type].Add($request)
        }
        
        return $groups
    }
    
    [void] FlushPendingRequests() {
        if ($this.PendingRequests.Count -gt 0) {
            $this.ProcessBatch()
        }
    }
    
    [hashtable] GetStats() {
        return @{
            PendingRequests = $this.PendingRequests.Count
            BatchSize = $this.BatchSize
            BatchIntervalMs = $this.BatchIntervalMs
            IsProcessing = $this.IsProcessing
            Statistics = $this.BatchStats.Clone()
        }
    }
    
    [void] Dispose() {
        if ($this.BatchTimer) {
            $this.BatchTimer.Dispose()
        }
        
        # Process any remaining requests
        $this.FlushPendingRequests()
    }
}

# Intelligent cache strategy manager
class IntelligentCacheStrategy {
    [hashtable] $CacheStrategies = @{}
    [hashtable] $AccessPatterns = @{}
    [hashtable] $CacheMetrics = @{}
    [Timer] $AnalysisTimer
    [int] $AnalysisIntervalMs = 300000  # 5 minutes
    [double] $HitRateThreshold = 0.7
    [int] $AccessCountThreshold = 10
    
    IntelligentCacheStrategy() {
        $this.InitializeCacheStrategies()
        
        # Start periodic analysis
        $this.AnalysisTimer = [Timer]::new(
            { $this.AnalyzeCachePerformance() },
            $null,
            $this.AnalysisIntervalMs,
            $this.AnalysisIntervalMs
        )
    }
    
    [void] InitializeCacheStrategies() {
        $this.CacheStrategies = @{
            "current_track" = @{
                TTL = 30000          # 30 seconds
                Priority = "High"
                Strategy = "WriteThrough"
                MaxSize = 1
            }
            "track_info" = @{
                TTL = 3600000        # 1 hour
                Priority = "Medium"
                Strategy = "WriteBack"
                MaxSize = 100
            }
            "lyrics" = @{
                TTL = 2592000000     # 30 days
                Priority = "High"
                Strategy = "WriteThrough"
                MaxSize = 500
            }
            "statistics" = @{
                TTL = 86400000       # 24 hours
                Priority = "Medium"
                Strategy = "WriteBack"
                MaxSize = 50
            }
            "user_playlists" = @{
                TTL = 1800000        # 30 minutes
                Priority = "Low"
                Strategy = "WriteBack"
                MaxSize = 20
            }
        }
    }
    
    [hashtable] GetCacheStrategy([string]$dataType) {
        if ($this.CacheStrategies.ContainsKey($dataType)) {
            return $this.CacheStrategies[$dataType]
        }
        
        # Return default strategy for unknown types
        return @{
            TTL = 300000         # 5 minutes
            Priority = "Low"
            Strategy = "WriteThrough"
            MaxSize = 10
        }
    }
    
    [void] RecordCacheAccess([string]$dataType, [string]$key, [bool]$hit) {
        $now = [DateTime]::UtcNow
        
        if (-not $this.AccessPatterns.ContainsKey($dataType)) {
            $this.AccessPatterns[$dataType] = @{}
        }
        
        if (-not $this.AccessPatterns[$dataType].ContainsKey($key)) {
            $this.AccessPatterns[$dataType][$key] = @{
                AccessCount = 0
                HitCount = 0
                LastAccess = $now
                FirstAccess = $now
            }
        }
        
        $pattern = $this.AccessPatterns[$dataType][$key]
        $pattern.AccessCount++
        $pattern.LastAccess = $now
        
        if ($hit) {
            $pattern.HitCount++
        }
        
        # Update metrics
        if (-not $this.CacheMetrics.ContainsKey($dataType)) {
            $this.CacheMetrics[$dataType] = @{
                TotalAccesses = 0
                TotalHits = 0
                HitRate = 0.0
                LastUpdated = $now
            }
        }
        
        $metrics = $this.CacheMetrics[$dataType]
        $metrics.TotalAccesses++
        if ($hit) {
            $metrics.TotalHits++
        }
        $metrics.HitRate = $metrics.TotalHits / $metrics.TotalAccesses
        $metrics.LastUpdated = $now
    }
    
    [void] AnalyzeCachePerformance() {
        try {
            foreach ($dataType in $this.CacheStrategies.Keys) {
                $this.OptimizeCacheStrategy($dataType)
            }
        } catch {
            Write-Warning "Cache performance analysis error: $($_.Exception.Message)"
        }
    }
    
    [void] OptimizeCacheStrategy([string]$dataType) {
        if (-not $this.CacheMetrics.ContainsKey($dataType)) {
            return
        }
        
        $metrics = $this.CacheMetrics[$dataType]
        $strategy = $this.CacheStrategies[$dataType]
        $changed = $false
        
        # Adjust TTL based on hit rate
        if ($metrics.HitRate -gt 0.9 -and $metrics.TotalAccesses -gt $this.AccessCountThreshold) {
            # Very high hit rate - increase TTL
            $newTTL = [Math]::Min($strategy.TTL * 1.5, 86400000)  # Max 24 hours
            if ($newTTL -ne $strategy.TTL) {
                $strategy.TTL = $newTTL
                $changed = $true
            }
        } elseif ($metrics.HitRate -lt 0.3 -and $metrics.TotalAccesses -gt $this.AccessCountThreshold) {
            # Low hit rate - decrease TTL
            $newTTL = [Math]::Max($strategy.TTL * 0.7, 30000)  # Min 30 seconds
            if ($newTTL -ne $strategy.TTL) {
                $strategy.TTL = $newTTL
                $changed = $true
            }
        }
        
        # Adjust cache size based on access patterns
        if ($this.AccessPatterns.ContainsKey($dataType)) {
            $uniqueKeys = $this.AccessPatterns[$dataType].Keys.Count
            $currentMaxSize = $strategy.MaxSize
            
            if ($uniqueKeys -gt ($currentMaxSize * 0.8)) {
                # Increase cache size if we're using most of it
                $strategy.MaxSize = [Math]::Min($currentMaxSize * 1.2, 1000)
                $changed = $true
            } elseif ($uniqueKeys -lt ($currentMaxSize * 0.3)) {
                # Decrease cache size if we're not using much
                $strategy.MaxSize = [Math]::Max($currentMaxSize * 0.8, 10)
                $changed = $true
            }
        }
        
        if ($changed) {
            Write-Verbose "Optimized cache strategy for $dataType - TTL: $($strategy.TTL)ms, MaxSize: $($strategy.MaxSize)"
        }
    }
    
    [bool] ShouldPreload([string]$dataType, [string]$key) {
        if (-not $this.AccessPatterns.ContainsKey($dataType) -or 
            -not $this.AccessPatterns[$dataType].ContainsKey($key)) {
            return $false
        }
        
        $pattern = $this.AccessPatterns[$dataType][$key]
        $timeSinceLastAccess = [DateTime]::UtcNow - $pattern.LastAccess
        
        # Preload if frequently accessed and recently used
        return $pattern.AccessCount -gt 5 -and $timeSinceLastAccess.TotalMinutes -lt 30
    }
    
    [hashtable] GetCacheAnalytics() {
        $analytics = @{
            Strategies = $this.CacheStrategies.Clone()
            Metrics = $this.CacheMetrics.Clone()
            TotalDataTypes = $this.CacheStrategies.Keys.Count
            OverallHitRate = 0.0
            LastAnalysis = [DateTime]::UtcNow
        }
        
        # Calculate overall hit rate
        $totalAccesses = 0
        $totalHits = 0
        
        foreach ($metrics in $this.CacheMetrics.Values) {
            $totalAccesses += $metrics.TotalAccesses
            $totalHits += $metrics.TotalHits
        }
        
        if ($totalAccesses -gt 0) {
            $analytics.OverallHitRate = $totalHits / $totalAccesses
        }
        
        return $analytics
    }
    
    [void] Dispose() {
        if ($this.AnalysisTimer) {
            $this.AnalysisTimer.Dispose()
        }
    }
}

# Resource cleanup manager for memory and resource management
class ResourceCleanupManager {
    [Timer] $CleanupTimer
    [int] $CleanupIntervalMs = 300000  # 5 minutes
    [hashtable] $ResourceTrackers = @{}
    [hashtable] $CleanupStrategies = @{}
    [int] $MemoryThresholdMB = 150
    [int] $ForceGCThresholdMB = 200
    [DateTime] $LastFullCleanup = [DateTime]::UtcNow
    [int] $FullCleanupIntervalMs = 1800000  # 30 minutes
    
    ResourceCleanupManager([int]$memoryThresholdMB = 150) {
        $this.MemoryThresholdMB = $memoryThresholdMB
        $this.ForceGCThresholdMB = $memoryThresholdMB + 50
        
        $this.InitializeCleanupStrategies()
        
        # Start cleanup timer
        $this.CleanupTimer = [Timer]::new(
            { $this.PerformCleanup() },
            $null,
            $this.CleanupIntervalMs,
            $this.CleanupIntervalMs
        )
    }
    
    [void] InitializeCleanupStrategies() {
        $this.CleanupStrategies = @{
            "cache" = @{
                Priority = 1
                Action = { param($manager) $manager.CleanupExpiredCache() }
                Threshold = 0.8  # Cleanup when 80% full
            }
            "statistics" = @{
                Priority = 2
                Action = { param($manager) $manager.CleanupOldStatistics() }
                Threshold = 0.9  # Cleanup when 90% full
            }
            "logs" = @{
                Priority = 3
                Action = { param($manager) $manager.CleanupOldLogs() }
                Threshold = 0.7  # Cleanup when 70% full
            }
            "temp_files" = @{
                Priority = 4
                Action = { param($manager) $manager.CleanupTempFiles() }
                Threshold = 0.6  # Cleanup when 60% full
            }
        }
    }
    
    [void] RegisterResourceTracker([string]$name, [scriptblock]$sizeCalculator, [scriptblock]$cleaner) {
        $this.ResourceTrackers[$name] = @{
            SizeCalculator = $sizeCalculator
            Cleaner = $cleaner
            LastCleanup = [DateTime]::UtcNow
            TotalCleanups = 0
            BytesCleaned = 0
        }
    }
    
    [void] PerformCleanup() {
        try {
            $memoryUsage = $this.GetCurrentMemoryUsageMB()
            $shouldPerformFullCleanup = $this.ShouldPerformFullCleanup()
            
            Write-Verbose "Starting resource cleanup - Memory: $memoryUsage MB, Full cleanup: $shouldPerformFullCleanup"
            
            if ($memoryUsage -gt $this.MemoryThresholdMB -or $shouldPerformFullCleanup) {
                $this.PerformResourceCleanup($shouldPerformFullCleanup)
            }
            
            # Force garbage collection if memory usage is very high
            if ($memoryUsage -gt $this.ForceGCThresholdMB) {
                $this.ForceGarbageCollection()
            }
            
        } catch {
            Write-Warning "Resource cleanup error: $($_.Exception.Message)"
        }
    }
    
    [bool] ShouldPerformFullCleanup() {
        $timeSinceLastFullCleanup = [DateTime]::UtcNow - $this.LastFullCleanup
        return $timeSinceLastFullCleanup.TotalMilliseconds -gt $this.FullCleanupIntervalMs
    }
    
    [void] PerformResourceCleanup([bool]$fullCleanup) {
        $beforeMemory = $this.GetCurrentMemoryUsageMB()
        
        # Sort cleanup strategies by priority
        $sortedStrategies = $this.CleanupStrategies.GetEnumerator() | 
            Sort-Object { $_.Value.Priority }
        
        foreach ($strategy in $sortedStrategies) {
            try {
                $name = $strategy.Key
                $config = $strategy.Value
                
                if ($fullCleanup -or $this.ShouldCleanupResource($name, $config.Threshold)) {
                    Write-Verbose "Performing cleanup for resource: $name"
                    & $config.Action $this
                }
            } catch {
                Write-Warning "Cleanup failed for $($strategy.Key): $($_.Exception.Message)"
            }
        }
        
        # Cleanup registered resource trackers
        foreach ($tracker in $this.ResourceTrackers.GetEnumerator()) {
            try {
                $name = $tracker.Key
                $config = $tracker.Value
                
                if ($fullCleanup -or $this.ShouldCleanupTracker($name)) {
                    Write-Verbose "Performing cleanup for tracked resource: $name"
                    $bytesCleaned = & $config.Cleaner
                    
                    $config.LastCleanup = [DateTime]::UtcNow
                    $config.TotalCleanups++
                    $config.BytesCleaned += $bytesCleaned
                }
            } catch {
                Write-Warning "Tracked resource cleanup failed for $($tracker.Key): $($_.Exception.Message)"
            }
        }
        
        if ($fullCleanup) {
            $this.LastFullCleanup = [DateTime]::UtcNow
        }
        
        $afterMemory = $this.GetCurrentMemoryUsageMB()
        $memoryFreed = $beforeMemory - $afterMemory
        
        Write-Verbose "Resource cleanup completed - Memory freed: $memoryFreed MB"
    }
    
    [bool] ShouldCleanupResource([string]$name, [double]$threshold) {
        # This would integrate with actual resource monitoring
        # For now, return true if memory usage is above threshold
        $memoryUsage = $this.GetCurrentMemoryUsageMB()
        return ($memoryUsage / $this.MemoryThresholdMB) -gt $threshold
    }
    
    [bool] ShouldCleanupTracker([string]$name) {
        if (-not $this.ResourceTrackers.ContainsKey($name)) {
            return $false
        }
        
        $tracker = $this.ResourceTrackers[$name]
        $timeSinceLastCleanup = [DateTime]::UtcNow - $tracker.LastCleanup
        
        # Cleanup if it's been more than 10 minutes since last cleanup
        return $timeSinceLastCleanup.TotalMinutes -gt 10
    }
    
    [void] CleanupExpiredCache() {
        # This would integrate with the cache manager
        Write-Verbose "Cleaning up expired cache entries"
        
        # Placeholder implementation
        [GC]::Collect(0, [GCCollectionMode]::Optimized)
    }
    
    [void] CleanupOldStatistics() {
        # This would integrate with the statistics engine
        Write-Verbose "Cleaning up old statistics data"
        
        # Placeholder implementation - would clean statistics older than retention period
    }
    
    [void] CleanupOldLogs() {
        Write-Verbose "Cleaning up old log files"
        
        try {
            $logDir = Join-Path $env:APPDATA "SpotifyCLI\Logs"
            if (Test-Path $logDir) {
                $cutoffDate = [DateTime]::UtcNow.AddDays(-7)  # Keep logs for 7 days
                $oldLogs = Get-ChildItem -Path $logDir -Filter "*.log" | 
                    Where-Object { $_.LastWriteTime -lt $cutoffDate }
                
                foreach ($log in $oldLogs) {
                    Remove-Item $log.FullName -Force -ErrorAction SilentlyContinue
                }
            }
        } catch {
            Write-Warning "Failed to cleanup old logs: $($_.Exception.Message)"
        }
    }
    
    [void] CleanupTempFiles() {
        Write-Verbose "Cleaning up temporary files"
        
        try {
            $tempDir = Join-Path $env:APPDATA "SpotifyCLI\Temp"
            if (Test-Path $tempDir) {
                $cutoffDate = [DateTime]::UtcNow.AddHours(-1)  # Keep temp files for 1 hour
                $oldTempFiles = Get-ChildItem -Path $tempDir | 
                    Where-Object { $_.LastWriteTime -lt $cutoffDate }
                
                foreach ($file in $oldTempFiles) {
                    Remove-Item $file.FullName -Force -Recurse -ErrorAction SilentlyContinue
                }
            }
        } catch {
            Write-Warning "Failed to cleanup temp files: $($_.Exception.Message)"
        }
    }
    
    [void] ForceGarbageCollection() {
        Write-Verbose "Forcing garbage collection due to high memory usage"
        
        try {
            $beforeMemory = $this.GetCurrentMemoryUsageMB()
            
            # Force full garbage collection
            [GC]::Collect()
            [GC]::WaitForPendingFinalizers()
            [GC]::Collect()
            
            $afterMemory = $this.GetCurrentMemoryUsageMB()
            $memoryFreed = $beforeMemory - $afterMemory
            
            Write-Verbose "Garbage collection completed - Memory freed: $memoryFreed MB"
        } catch {
            Write-Warning "Garbage collection failed: $($_.Exception.Message)"
        }
    }
    
    [double] GetCurrentMemoryUsageMB() {
        try {
            $process = Get-Process -Id $PID
            return [Math]::Round($process.WorkingSet64 / 1MB, 2)
        } catch {
            return 0
        }
    }
    
    [hashtable] GetResourceStats() {
        $stats = @{
            CurrentMemoryMB = $this.GetCurrentMemoryUsageMB()
            MemoryThresholdMB = $this.MemoryThresholdMB
            ForceGCThresholdMB = $this.ForceGCThresholdMB
            LastFullCleanup = $this.LastFullCleanup
            CleanupIntervalMs = $this.CleanupIntervalMs
            TrackedResources = @{}
        }
        
        foreach ($tracker in $this.ResourceTrackers.GetEnumerator()) {
            $stats.TrackedResources[$tracker.Key] = @{
                LastCleanup = $tracker.Value.LastCleanup
                TotalCleanups = $tracker.Value.TotalCleanups
                BytesCleaned = $tracker.Value.BytesCleaned
            }
        }
        
        return $stats
    }
    
    [void] Dispose() {
        if ($this.CleanupTimer) {
            $this.CleanupTimer.Dispose()
        }
        
        # Perform final cleanup
        $this.PerformResourceCleanup($true)
    }
}

# Background processing coordinator
class BackgroundProcessingCoordinator {
    [RequestBatchManager] $BatchManager
    [IntelligentCacheStrategy] $CacheStrategy
    [ResourceCleanupManager] $CleanupManager
    [bool] $IsInitialized = $false
    [hashtable] $Configuration = @{}
    
    BackgroundProcessingCoordinator([hashtable]$config) {
        $this.Configuration = $config
        $this.Initialize()
    }
    
    [void] Initialize() {
        try {
            # Initialize batch manager
            $batchProcessor = {
                param([string]$requestType, [List[hashtable]]$requests)
                $this.ProcessRequestBatch($requestType, $requests)
            }
            
            $batchSize = $this.Configuration.ContainsKey('BatchSize') ? $this.Configuration.BatchSize : 10
            $batchInterval = $this.Configuration.ContainsKey('BatchIntervalMs') ? $this.Configuration.BatchIntervalMs : 2000
            
            $this.BatchManager = [RequestBatchManager]::new($batchProcessor, $batchSize, $batchInterval)
            
            # Initialize cache strategy
            $this.CacheStrategy = [IntelligentCacheStrategy]::new()
            
            # Initialize cleanup manager
            $memoryThreshold = $this.Configuration.ContainsKey('MemoryThresholdMB') ? $this.Configuration.MemoryThresholdMB : 150
            $this.CleanupManager = [ResourceCleanupManager]::new($memoryThreshold)
            
            $this.IsInitialized = $true
            Write-Verbose "Background processing coordinator initialized successfully"
            
        } catch {
            Write-Error "Failed to initialize background processing coordinator: $($_.Exception.Message)"
            throw
        }
    }
    
    [void] ProcessRequestBatch([string]$requestType, [List[hashtable]]$requests) {
        try {
            Write-Verbose "Processing batch of $($requests.Count) requests of type: $requestType"
            
            switch ($requestType) {
                "statistics" {
                    $this.ProcessStatisticsBatch($requests)
                }
                "lyrics" {
                    $this.ProcessLyricsBatch($requests)
                }
                "track_info" {
                    $this.ProcessTrackInfoBatch($requests)
                }
                default {
                    Write-Warning "Unknown request type for batch processing: $requestType"
                }
            }
        } catch {
            Write-Warning "Batch processing error for type $requestType : $($_.Exception.Message)"
        }
    }
    
    [void] ProcessStatisticsBatch([List[hashtable]]$requests) {
        # Group statistics requests by operation type
        $operations = @{}
        
        foreach ($request in $requests) {
            $operation = $request.ContainsKey('Operation') ? $request.Operation : 'record'
            
            if (-not $operations.ContainsKey($operation)) {
                $operations[$operation] = [List[hashtable]]::new()
            }
            
            $operations[$operation].Add($request)
        }
        
        # Process each operation type efficiently
        foreach ($operation in $operations.GetEnumerator()) {
            switch ($operation.Key) {
                "record" {
                    # Batch record multiple playback events
                    $this.BatchRecordPlaybackEvents($operation.Value)
                }
                "aggregate" {
                    # Batch aggregate statistics calculations
                    $this.BatchAggregateStatistics($operation.Value)
                }
            }
        }
    }
    
    [void] ProcessLyricsBatch([List[hashtable]]$requests) {
        # Group lyrics requests by provider to minimize API calls
        $providers = @{}
        
        foreach ($request in $requests) {
            $provider = $request.ContainsKey('Provider') ? $request.Provider : 'genius'
            
            if (-not $providers.ContainsKey($provider)) {
                $providers[$provider] = [List[hashtable]]::new()
            }
            
            $providers[$provider].Add($request)
        }
        
        # Process each provider's requests in batch
        foreach ($provider in $providers.GetEnumerator()) {
            $this.BatchFetchLyrics($provider.Key, $provider.Value)
        }
    }
    
    [void] ProcessTrackInfoBatch([List[hashtable]]$requests) {
        # Extract unique track IDs to avoid duplicate API calls
        $uniqueTrackIds = [HashSet[string]]::new()
        
        foreach ($request in $requests) {
            if ($request.ContainsKey('TrackId')) {
                $uniqueTrackIds.Add($request.TrackId) | Out-Null
            }
        }
        
        # Batch fetch track information
        if ($uniqueTrackIds.Count -gt 0) {
            $this.BatchFetchTrackInfo($uniqueTrackIds.ToArray())
        }
    }
    
    [void] BatchRecordPlaybackEvents([List[hashtable]]$events) {
        # This would integrate with the statistics engine
        Write-Verbose "Batch recording $($events.Count) playback events"
        
        # Placeholder implementation
        foreach ($event in $events) {
            # Record event efficiently
        }
    }
    
    [void] BatchAggregateStatistics([List[hashtable]]$requests) {
        # This would integrate with the statistics engine
        Write-Verbose "Batch aggregating statistics for $($requests.Count) requests"
        
        # Placeholder implementation
    }
    
    [void] BatchFetchLyrics([string]$provider, [List[hashtable]]$requests) {
        # This would integrate with the lyrics engine
        Write-Verbose "Batch fetching lyrics from $provider for $($requests.Count) tracks"
        
        # Placeholder implementation
        foreach ($request in $requests) {
            # Fetch lyrics efficiently
        }
    }
    
    [void] BatchFetchTrackInfo([string[]]$trackIds) {
        # This would integrate with the Spotify API client
        Write-Verbose "Batch fetching track info for $($trackIds.Count) tracks"
        
        # Spotify API supports fetching up to 50 tracks at once
        $batchSize = 50
        for ($i = 0; $i -lt $trackIds.Count; $i += $batchSize) {
            $batch = $trackIds[$i..([Math]::Min($i + $batchSize - 1, $trackIds.Count - 1))]
            # Make batch API call
        }
    }
    
    [void] QueueRequest([hashtable]$request) {
        if (-not $this.IsInitialized) {
            throw [System.InvalidOperationException]::new("Background processing coordinator not initialized")
        }
        
        $this.BatchManager.QueueRequest($request)
    }
    
    [void] RecordCacheAccess([string]$dataType, [string]$key, [bool]$hit) {
        if ($this.CacheStrategy) {
            $this.CacheStrategy.RecordCacheAccess($dataType, $key, $hit)
        }
    }
    
    [hashtable] GetCacheStrategy([string]$dataType) {
        if ($this.CacheStrategy) {
            return $this.CacheStrategy.GetCacheStrategy($dataType)
        }
        return @{}
    }
    
    [hashtable] GetPerformanceStats() {
        $stats = @{
            IsInitialized = $this.IsInitialized
            Configuration = $this.Configuration.Clone()
        }
        
        if ($this.BatchManager) {
            $stats['BatchManager'] = $this.BatchManager.GetStats()
        }
        
        if ($this.CacheStrategy) {
            $stats['CacheStrategy'] = $this.CacheStrategy.GetCacheAnalytics()
        }
        
        if ($this.CleanupManager) {
            $stats['ResourceCleanup'] = $this.CleanupManager.GetResourceStats()
        }
        
        return $stats
    }
    
    [void] FlushPendingOperations() {
        if ($this.BatchManager) {
            $this.BatchManager.FlushPendingRequests()
        }
    }
    
    [void] Dispose() {
        try {
            if ($this.BatchManager) {
                $this.BatchManager.Dispose()
            }
            
            if ($this.CacheStrategy) {
                $this.CacheStrategy.Dispose()
            }
            
            if ($this.CleanupManager) {
                $this.CleanupManager.Dispose()
            }
            
            Write-Verbose "Background processing coordinator disposed successfully"
        } catch {
            Write-Warning "Error disposing background processing coordinator: $($_.Exception.Message)"
        }
    }
}

# Export classes and functions
Export-ModuleMember -Function @() -Variable @()