// Priority management for optimization coordination
//
// This module provides sophisticated priority management capabilities including
// multi-dimensional priority queues, dynamic priority adjustment, and
// intelligent priority update strategies for optimization tasks.

#[allow(dead_code)]
use scirs2_core::ndarray::Array1;
use scirs2_core::numeric::Float;
use std::cmp::Ordering;
use std::collections::{BinaryHeap, HashMap, VecDeque};
use std::fmt::Debug;
use std::time::{Duration, SystemTime};

use crate::error::{OptimError, Result};

/// Priority manager for optimization tasks
#[derive(Debug)]
pub struct PriorityManager<T: Float + Debug + Send + Sync + 'static> {
    /// Priority queues by category
    priority_queues: HashMap<String, PriorityQueue<T>>,

    /// Priority update strategies
    update_strategies: HashMap<String, Box<dyn PriorityUpdateStrategy<T>>>,

    /// Priority calculation algorithms
    calculation_algorithms: HashMap<String, Box<dyn PriorityCalculationAlgorithm<T>>>,

    /// Current update strategy
    current_update_strategy: String,

    /// Priority history tracking
    priority_history: PriorityHistoryTracker<T>,

    /// Dynamic adjustment controller
    adjustment_controller: DynamicAdjustmentController<T>,

    /// Priority analytics
    analytics: PriorityAnalytics<T>,

    /// Manager configuration
    config: PriorityManagerConfig<T>,

    /// Manager statistics
    stats: PriorityManagerStatistics<T>,
}

/// Multi-dimensional priority queue
#[derive(Debug)]
pub struct PriorityQueue<T: Float + Debug + Send + Sync + 'static> {
    /// Primary priority queue
    primary_queue: BinaryHeap<PriorityItem<T>>,

    /// Secondary queues by priority dimension
    secondary_queues: HashMap<PriorityDimension, BinaryHeap<PriorityItem<T>>>,

    /// Queue capacity limit
    capacity_limit: Option<usize>,

    /// Queue statistics
    queue_stats: QueueStatistics<T>,

    /// Queue configuration
    config: QueueConfig<T>,
}

/// Priority item in the queue
#[derive(Debug, Clone)]
pub struct PriorityItem<T: Float + Debug + Send + Sync + 'static> {
    /// Task identifier
    pub task_id: String,

    /// Multi-dimensional priority
    pub priority: PriorityLevel<T>,

    /// Item metadata
    pub metadata: HashMap<String, String>,

    /// Creation timestamp
    pub created_at: SystemTime,

    /// Last update timestamp
    pub updated_at: SystemTime,

    /// Priority version (for tracking changes)
    pub version: u64,
}

/// Multi-dimensional priority level
#[derive(Debug, Clone)]
pub struct PriorityLevel<T: Float + Debug + Send + Sync + 'static> {
    /// Base priority value (0.0 to 1.0)
    pub base_priority: T,

    /// Urgency factor (0.0 to 1.0)
    pub urgency: T,

    /// Importance factor (0.0 to 1.0)
    pub importance: T,

    /// Resource efficiency factor (0.0 to 1.0)
    pub efficiency: T,

    /// Cost factor (0.0 to 1.0, lower is better)
    pub cost: T,

    /// Quality factor (0.0 to 1.0)
    pub quality: T,

    /// Deadline factor (0.0 to 1.0, higher for tighter deadlines)
    pub deadline_factor: T,

    /// Dynamic factors
    pub dynamic_factors: HashMap<String, T>,

    /// Composite priority score
    pub composite_score: T,

    /// Priority weights
    pub weights: PriorityWeights<T>,
}

/// Priority dimensions for multi-queue management
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub enum PriorityDimension {
    /// Urgency-based priority
    Urgency,

    /// Importance-based priority
    Importance,

    /// Efficiency-based priority
    Efficiency,

    /// Cost-based priority
    Cost,

    /// Quality-based priority
    Quality,

    /// Deadline-based priority
    Deadline,

    /// Custom dimension
    Custom(u8),
}

/// Priority calculation weights
#[derive(Debug, Clone)]
pub struct PriorityWeights<T: Float + Debug + Send + Sync + 'static> {
    /// Base priority weight
    pub base_weight: T,

    /// Urgency weight
    pub urgency_weight: T,

    /// Importance weight
    pub importance_weight: T,

    /// Efficiency weight
    pub efficiency_weight: T,

    /// Cost weight
    pub cost_weight: T,

    /// Quality weight
    pub quality_weight: T,

    /// Deadline weight
    pub deadline_weight: T,

    /// Dynamic weights
    pub dynamic_weights: HashMap<String, T>,
}

/// Priority update strategy trait
pub trait PriorityUpdateStrategy<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Update priorities based on current state
    fn update_priorities(
        &mut self,
        items: &mut [PriorityItem<T>],
        context: &PriorityUpdateContext<T>,
    ) -> Result<()>;

    /// Get strategy name
    fn name(&self) -> &str;

    /// Get strategy performance metrics
    fn get_metrics(&self) -> HashMap<String, T>;

    /// Configure strategy parameters
    fn configure(&mut self, config: &HashMap<String, T>) -> Result<()>;
}

/// Priority calculation algorithm trait
pub trait PriorityCalculationAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Calculate priority for a task
    fn calculate_priority(
        &self,
        task_context: &TaskContext<T>,
        weights: &PriorityWeights<T>,
    ) -> Result<PriorityLevel<T>>;

    /// Get algorithm name
    fn name(&self) -> &str;

    /// Get algorithm complexity
    fn complexity(&self) -> AlgorithmComplexity;
}

/// Context for priority updates
#[derive(Debug)]
pub struct PriorityUpdateContext<T: Float + Debug + Send + Sync + 'static> {
    /// Current system load
    pub system_load: T,

    /// Resource availability
    pub resource_availability: HashMap<String, T>,

    /// Performance metrics
    pub performance_metrics: HashMap<String, T>,

    /// Time since last update
    pub time_since_update: Duration,

    /// Update trigger
    pub update_trigger: UpdateTrigger,

    /// Environmental factors
    pub environmental_factors: HashMap<String, T>,
}

/// Task context for priority calculation
#[derive(Debug)]
pub struct TaskContext<T: Float + Debug + Send + Sync + 'static> {
    /// Task identifier
    pub task_id: String,

    /// Task type
    pub task_type: String,

    /// Task parameters
    pub parameters: HashMap<String, T>,

    /// Resource requirements
    pub resource_requirements: HashMap<String, T>,

    /// Estimated execution time
    pub estimated_duration: Duration,

    /// Task deadline
    pub deadline: Option<SystemTime>,

    /// Historical performance
    pub historical_performance: Option<Array1<T>>,

    /// Task dependencies
    pub dependencies: Vec<String>,

    /// Task metadata
    pub metadata: HashMap<String, String>,
}

/// Priority update triggers
#[derive(Debug, Clone, Copy)]
pub enum UpdateTrigger {
    /// Periodic update
    Periodic,

    /// Resource availability change
    ResourceChange,

    /// Performance degradation
    PerformanceDegradation,

    /// New task arrival
    NewTask,

    /// Task completion
    TaskCompletion,

    /// Manual trigger
    Manual,

    /// System event
    SystemEvent,
}

/// Algorithm complexity levels
#[derive(Debug, Clone, Copy)]
pub enum AlgorithmComplexity {
    /// O(1) - Constant time
    Constant,

    /// O(log n) - Logarithmic time
    Logarithmic,

    /// O(n) - Linear time
    Linear,

    /// O(n log n) - Linearithmic time
    Linearithmic,

    /// O(n²) - Quadratic time
    Quadratic,

    /// O(2^n) - Exponential time
    Exponential,
}

/// Priority history tracker
#[derive(Debug)]
pub struct PriorityHistoryTracker<T: Float + Debug + Send + Sync + 'static> {
    /// Priority change history
    change_history: VecDeque<PriorityChangeRecord<T>>,

    /// Statistical summaries
    statistical_summaries: HashMap<String, PriorityStatistics<T>>,

    /// Trend analysis
    trend_analyzer: PriorityTrendAnalyzer<T>,

    /// Change detection algorithms
    change_detectors: Vec<Box<dyn PriorityChangeDetector<T>>>,

    /// History configuration
    config: HistoryConfig,
}

/// Priority change record
#[derive(Debug, Clone)]
pub struct PriorityChangeRecord<T: Float + Debug + Send + Sync + 'static> {
    /// Task identifier
    pub task_id: String,

    /// Old priority
    pub old_priority: PriorityLevel<T>,

    /// New priority
    pub new_priority: PriorityLevel<T>,

    /// Change reason
    pub change_reason: ChangeReason,

    /// Change timestamp
    pub timestamp: SystemTime,

    /// Change magnitude
    pub change_magnitude: T,

    /// Update strategy used
    pub strategy_used: String,
}

/// Reasons for priority changes
#[derive(Debug, Clone, Copy)]
pub enum ChangeReason {
    /// Resource availability changed
    ResourceAvailability,

    /// Performance feedback
    PerformanceFeedback,

    /// Deadline approaching
    DeadlineApproaching,

    /// System load changed
    SystemLoadChange,

    /// Task dependency resolved
    DependencyResolved,

    /// Manual adjustment
    ManualAdjustment,

    /// Algorithm update
    AlgorithmUpdate,

    /// Learning-based adjustment
    LearningAdjustment,
}

/// Priority statistics
#[derive(Debug, Clone)]
pub struct PriorityStatistics<T: Float + Debug + Send + Sync + 'static> {
    /// Average priority
    pub average_priority: T,

    /// Priority variance
    pub priority_variance: T,

    /// Priority distribution
    pub distribution: HashMap<String, usize>,

    /// Change frequency
    pub change_frequency: T,

    /// Stability metric
    pub stability: T,

    /// Effectiveness metric
    pub effectiveness: T,
}

/// Priority trend analyzer
#[derive(Debug)]
pub struct PriorityTrendAnalyzer<T: Float + Debug + Send + Sync + 'static> {
    /// Trend detection algorithms
    trend_algorithms: Vec<Box<dyn TrendDetectionAlgorithm<T>>>,

    /// Current trends
    current_trends: HashMap<String, PriorityTrend<T>>,

    /// Trend predictions
    predictions: HashMap<String, TrendPrediction<T>>,

    /// Analysis configuration
    config: TrendAnalysisConfig<T>,
}

/// Priority trend representation
#[derive(Debug, Clone)]
pub struct PriorityTrend<T: Float + Debug + Send + Sync + 'static> {
    /// Trend direction
    pub direction: TrendDirection,

    /// Trend strength
    pub strength: T,

    /// Trend duration
    pub duration: Duration,

    /// Trend confidence
    pub confidence: T,

    /// Trend characteristics
    pub characteristics: TrendCharacteristics<T>,
}

/// Trend direction
#[derive(Debug, Clone, Copy)]
pub enum TrendDirection {
    /// Increasing priority
    Increasing,

    /// Decreasing priority
    Decreasing,

    /// Stable priority
    Stable,

    /// Oscillating priority
    Oscillating,

    /// Irregular changes
    Irregular,
}

/// Trend characteristics
#[derive(Debug, Clone)]
pub struct TrendCharacteristics<T: Float + Debug + Send + Sync + 'static> {
    /// Rate of change
    pub rate_of_change: T,

    /// Volatility
    pub volatility: T,

    /// Periodicity
    pub periodicity: Option<Duration>,

    /// Seasonality
    pub seasonality: Option<T>,

    /// Correlation with external factors
    pub correlations: HashMap<String, T>,
}

/// Trend prediction
#[derive(Debug, Clone)]
pub struct TrendPrediction<T: Float + Debug + Send + Sync + 'static> {
    /// Predicted trend direction
    pub predicted_direction: TrendDirection,

    /// Prediction confidence
    pub confidence: T,

    /// Prediction horizon
    pub horizon: Duration,

    /// Predicted values
    pub predicted_values: Vec<T>,

    /// Uncertainty bounds
    pub uncertainty_bounds: (Vec<T>, Vec<T>),
}

/// Trend detection algorithm trait
pub trait TrendDetectionAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Detect trends in priority data
    fn detect_trend(&self, data: &[T], timestamps: &[SystemTime]) -> Result<PriorityTrend<T>>;

    /// Get algorithm name
    fn name(&self) -> &str;

    /// Get detection sensitivity
    fn sensitivity(&self) -> T;
}

/// Priority change detector trait
pub trait PriorityChangeDetector<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Detect significant priority changes
    fn detect_change(
        &self,
        old_priority: &PriorityLevel<T>,
        new_priority: &PriorityLevel<T>,
    ) -> Result<bool>;

    /// Get detector name
    fn name(&self) -> &str;

    /// Get detection threshold
    fn threshold(&self) -> T;
}

/// Dynamic adjustment controller
#[derive(Debug)]
pub struct DynamicAdjustmentController<T: Float + Debug + Send + Sync + 'static> {
    /// Adjustment algorithms
    adjustment_algorithms: HashMap<String, Box<dyn DynamicAdjustmentAlgorithm<T>>>,

    /// Current adjustment strategy
    current_strategy: String,

    /// Adjustment history
    adjustment_history: VecDeque<AdjustmentRecord<T>>,

    /// Performance feedback
    feedback_processor: FeedbackProcessor<T>,

    /// Learning system
    learning_system: AdjustmentLearningSystem<T>,
}

/// Dynamic adjustment algorithm trait
pub trait DynamicAdjustmentAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Calculate dynamic adjustments
    fn calculate_adjustment(
        &self,
        current_priority: &PriorityLevel<T>,
        context: &AdjustmentContext<T>,
    ) -> Result<PriorityLevel<T>>;

    /// Get algorithm name
    fn name(&self) -> &str;

    /// Get algorithm responsiveness
    fn responsiveness(&self) -> T;
}

/// Context for dynamic adjustments
#[derive(Debug, Clone)]
pub struct AdjustmentContext<T: Float + Debug + Send + Sync + 'static> {
    /// Current performance metrics
    pub performance_metrics: HashMap<String, T>,

    /// Resource utilization
    pub resource_utilization: HashMap<String, T>,

    /// System feedback
    pub system_feedback: HashMap<String, T>,

    /// Time factors
    pub time_factors: TimeFactors,

    /// Environmental conditions
    pub environmental_conditions: HashMap<String, T>,
}

/// Time-related factors for adjustments
#[derive(Debug, Clone)]
pub struct TimeFactors {
    /// Time of day
    pub time_of_day: Duration,

    /// Day of week
    pub day_of_week: u8,

    /// Seasonal factors
    pub seasonal_factors: HashMap<String, f64>,

    /// Historical patterns
    pub historical_patterns: HashMap<String, f64>,
}

/// Adjustment record
#[derive(Debug, Clone)]
pub struct AdjustmentRecord<T: Float + Debug + Send + Sync + 'static> {
    /// Task identifier
    pub task_id: String,

    /// Original priority
    pub original_priority: PriorityLevel<T>,

    /// Adjusted priority
    pub adjusted_priority: PriorityLevel<T>,

    /// Adjustment reason
    pub adjustment_reason: AdjustmentReason,

    /// Adjustment timestamp
    pub timestamp: SystemTime,

    /// Algorithm used
    pub algorithm_used: String,

    /// Adjustment effectiveness
    pub effectiveness: Option<T>,
}

/// Reasons for dynamic adjustments
#[derive(Debug, Clone, Copy)]
pub enum AdjustmentReason {
    /// Performance optimization
    PerformanceOptimization,

    /// Load balancing
    LoadBalancing,

    /// Resource optimization
    ResourceOptimization,

    /// Deadline management
    DeadlineManagement,

    /// Quality improvement
    QualityImprovement,

    /// Cost optimization
    CostOptimization,

    /// Learning feedback
    LearningFeedback,
}

/// Feedback processor for priority adjustments
#[derive(Debug)]
pub struct FeedbackProcessor<T: Float + Debug + Send + Sync + 'static> {
    /// Feedback collection system
    feedback_collector: FeedbackCollector<T>,

    /// Feedback analysis engine
    analysis_engine: FeedbackAnalysisEngine<T>,

    /// Feedback integration system
    integration_system: FeedbackIntegrationSystem<T>,

    /// Feedback history
    feedback_history: VecDeque<FeedbackRecord<T>>,
}

/// Feedback record
#[derive(Debug, Clone)]
pub struct FeedbackRecord<T: Float + Debug + Send + Sync + 'static> {
    /// Task identifier
    pub task_id: String,

    /// Feedback type
    pub feedback_type: FeedbackType,

    /// Feedback value
    pub feedback_value: T,

    /// Feedback source
    pub source: String,

    /// Feedback timestamp
    pub timestamp: SystemTime,

    /// Feedback reliability
    pub reliability: T,
}

/// Types of feedback
#[derive(Debug, Clone, Copy)]
pub enum FeedbackType {
    /// Performance feedback
    Performance,

    /// Quality feedback
    Quality,

    /// Resource efficiency feedback
    ResourceEfficiency,

    /// User satisfaction feedback
    UserSatisfaction,

    /// System health feedback
    SystemHealth,

    /// Cost effectiveness feedback
    CostEffectiveness,
}

/// Feedback collector
#[derive(Debug)]
pub struct FeedbackCollector<T: Float + Debug + Send + Sync + 'static> {
    /// Collection strategies
    collection_strategies: Vec<Box<dyn FeedbackCollectionStrategy<T>>>,

    /// Collection frequency
    collection_frequency: Duration,

    /// Collection filters
    filters: Vec<Box<dyn FeedbackFilter<T>>>,

    /// Collected feedback buffer
    feedback_buffer: VecDeque<FeedbackRecord<T>>,
}

/// Feedback collection strategy trait
pub trait FeedbackCollectionStrategy<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Collect feedback from source
    fn collect_feedback(&mut self) -> Result<Vec<FeedbackRecord<T>>>;

    /// Get strategy name
    fn name(&self) -> &str;

    /// Get collection reliability
    fn reliability(&self) -> T;
}

/// Feedback filter trait
pub trait FeedbackFilter<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Filter feedback records
    fn filter(&self, feedback: &FeedbackRecord<T>) -> bool;

    /// Get filter name
    fn name(&self) -> &str;
}

/// Feedback analysis engine
#[derive(Debug)]
pub struct FeedbackAnalysisEngine<T: Float + Debug + Send + Sync + 'static> {
    /// Analysis algorithms
    analysis_algorithms: Vec<Box<dyn FeedbackAnalysisAlgorithm<T>>>,

    /// Analysis results
    analysis_results: HashMap<String, AnalysisResult<T>>,

    /// Pattern recognition system
    pattern_recognition: PatternRecognitionSystem<T>,
}

/// Feedback analysis algorithm trait
pub trait FeedbackAnalysisAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Analyze feedback data
    fn analyze(&self, feedback: &[FeedbackRecord<T>]) -> Result<AnalysisResult<T>>;

    /// Get algorithm name
    fn name(&self) -> &str;
}

/// Analysis result
#[derive(Debug, Clone)]
pub struct AnalysisResult<T: Float + Debug + Send + Sync + 'static> {
    /// Analysis type
    pub analysis_type: String,

    /// Key insights
    pub insights: HashMap<String, T>,

    /// Confidence level
    pub confidence: T,

    /// Recommendations
    pub recommendations: Vec<String>,

    /// Analysis timestamp
    pub timestamp: SystemTime,
}

/// Pattern recognition system
#[derive(Debug)]
pub struct PatternRecognitionSystem<T: Float + Debug + Send + Sync + 'static> {
    /// Pattern detection algorithms
    pattern_detectors: Vec<Box<dyn PatternDetector<T>>>,

    /// Recognized patterns
    recognized_patterns: HashMap<String, RecognizedPattern<T>>,

    /// Pattern library
    pattern_library: PatternLibrary<T>,
}

/// Pattern detector trait
pub trait PatternDetector<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Detect patterns in feedback
    fn detect_patterns(&self, feedback: &[FeedbackRecord<T>]) -> Result<Vec<RecognizedPattern<T>>>;

    /// Get detector name
    fn name(&self) -> &str;
}

/// Recognized pattern
#[derive(Debug, Clone)]
pub struct RecognizedPattern<T: Float + Debug + Send + Sync + 'static> {
    /// Pattern identifier
    pub pattern_id: String,

    /// Pattern type
    pub pattern_type: String,

    /// Pattern characteristics
    pub characteristics: HashMap<String, T>,

    /// Pattern confidence
    pub confidence: T,

    /// Pattern implications
    pub implications: Vec<String>,
}

/// Pattern library
#[derive(Debug)]
pub struct PatternLibrary<T: Float + Debug + Send + Sync + 'static> {
    /// Known patterns
    known_patterns: HashMap<String, PatternTemplate<T>>,

    /// Pattern matching algorithms
    matching_algorithms: Vec<Box<dyn PatternMatcher<T>>>,

    /// Learning system for new patterns
    learning_system: PatternLearningSystem<T>,
}

/// Pattern template
#[derive(Debug, Clone)]
pub struct PatternTemplate<T: Float + Debug + Send + Sync + 'static> {
    /// Template identifier
    pub template_id: String,

    /// Template characteristics
    pub characteristics: HashMap<String, T>,

    /// Matching criteria
    pub matching_criteria: MatchingCriteria<T>,

    /// Template reliability
    pub reliability: T,
}

/// Matching criteria for patterns
#[derive(Debug, Clone)]
pub struct MatchingCriteria<T: Float + Debug + Send + Sync + 'static> {
    /// Similarity threshold
    pub similarity_threshold: T,

    /// Required characteristics
    pub required_characteristics: Vec<String>,

    /// Optional characteristics
    pub optional_characteristics: Vec<String>,

    /// Weighting factors
    pub weights: HashMap<String, T>,
}

/// Pattern matcher trait
pub trait PatternMatcher<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Match patterns against templates
    fn match_pattern(
        &self,
        pattern: &RecognizedPattern<T>,
        templates: &[PatternTemplate<T>],
    ) -> Result<Vec<PatternMatch<T>>>;

    /// Get matcher name
    fn name(&self) -> &str;
}

/// Pattern match result
#[derive(Debug, Clone)]
pub struct PatternMatch<T: Float + Debug + Send + Sync + 'static> {
    /// Matched template
    pub template_id: String,

    /// Match confidence
    pub confidence: T,

    /// Match details
    pub match_details: HashMap<String, T>,

    /// Suggested actions
    pub suggested_actions: Vec<String>,
}

/// Pattern learning system
#[derive(Debug)]
pub struct PatternLearningSystem<T: Float + Debug + Send + Sync + 'static> {
    /// Learning algorithms
    learning_algorithms: Vec<Box<dyn PatternLearningAlgorithm<T>>>,

    /// Learning data
    learning_data: VecDeque<LearningDataPoint<T>>,

    /// Learned patterns
    learned_patterns: HashMap<String, LearnedPattern<T>>,

    /// Learning effectiveness
    effectiveness: T,
}

/// Pattern learning algorithm trait
pub trait PatternLearningAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Learn new patterns from data
    fn learn_patterns(&mut self, data: &[LearningDataPoint<T>]) -> Result<Vec<LearnedPattern<T>>>;

    /// Get algorithm name
    fn name(&self) -> &str;
}

/// Learning data point
#[derive(Debug, Clone)]
pub struct LearningDataPoint<T: Float + Debug + Send + Sync + 'static> {
    /// Input features
    pub features: Array1<T>,

    /// Target output
    pub target: T,

    /// Context information
    pub context: HashMap<String, T>,

    /// Data timestamp
    pub timestamp: SystemTime,

    /// Data reliability
    pub reliability: T,
}

/// Learned pattern
#[derive(Debug, Clone)]
pub struct LearnedPattern<T: Float + Debug + Send + Sync + 'static> {
    /// Pattern identifier
    pub pattern_id: String,

    /// Pattern model
    pub model: PatternModel<T>,

    /// Learning confidence
    pub confidence: T,

    /// Validation results
    pub validation_results: ValidationResults<T>,

    /// Pattern applicability
    pub applicability: HashMap<String, T>,
}

/// Pattern model
#[derive(Debug, Clone)]
pub struct PatternModel<T: Float + Debug + Send + Sync + 'static> {
    /// Model type
    pub model_type: String,

    /// Model parameters
    pub parameters: HashMap<String, Array1<T>>,

    /// Model performance
    pub performance: HashMap<String, T>,

    /// Model complexity
    pub complexity: T,
}

/// Validation results
#[derive(Debug, Clone)]
pub struct ValidationResults<T: Float + Debug + Send + Sync + 'static> {
    /// Validation accuracy
    pub accuracy: T,

    /// Precision
    pub precision: T,

    /// Recall
    pub recall: T,

    /// F1 score
    pub f1_score: T,

    /// Cross-validation results
    pub cross_validation: Vec<T>,
}

/// Feedback integration system
#[derive(Debug)]
pub struct FeedbackIntegrationSystem<T: Float + Debug + Send + Sync + 'static> {
    /// Integration strategies
    integration_strategies: Vec<Box<dyn FeedbackIntegrationStrategy<T>>>,

    /// Integration results
    integration_results: HashMap<String, IntegrationResult<T>>,

    /// Integration effectiveness
    effectiveness: T,
}

/// Feedback integration strategy trait
pub trait FeedbackIntegrationStrategy<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Integrate feedback into priority system
    fn integrate_feedback(
        &mut self,
        feedback: &[FeedbackRecord<T>],
        analysis: &[AnalysisResult<T>],
    ) -> Result<IntegrationResult<T>>;

    /// Get strategy name
    fn name(&self) -> &str;
}

/// Integration result
#[derive(Debug, Clone)]
pub struct IntegrationResult<T: Float + Debug + Send + Sync + 'static> {
    /// Priority adjustments made
    pub priority_adjustments: HashMap<String, T>,

    /// System improvements
    pub improvements: HashMap<String, T>,

    /// Integration confidence
    pub confidence: T,

    /// Integration timestamp
    pub timestamp: SystemTime,
}

/// Adjustment learning system
#[derive(Debug)]
pub struct AdjustmentLearningSystem<T: Float + Debug + Send + Sync + 'static> {
    /// Learning algorithms
    learning_algorithms: Vec<Box<dyn AdjustmentLearningAlgorithm<T>>>,

    /// Learning data
    learning_data: VecDeque<AdjustmentLearningDataPoint<T>>,

    /// Learned models
    learned_models: HashMap<String, AdjustmentModel<T>>,

    /// Learning effectiveness
    effectiveness: T,
}

/// Adjustment learning algorithm trait
pub trait AdjustmentLearningAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Learn adjustment strategies
    fn learn_adjustments(
        &mut self,
        data: &[AdjustmentLearningDataPoint<T>],
    ) -> Result<AdjustmentModel<T>>;

    /// Get algorithm name
    fn name(&self) -> &str;
}

/// Adjustment learning data point
#[derive(Debug, Clone)]
pub struct AdjustmentLearningDataPoint<T: Float + Debug + Send + Sync + 'static> {
    /// Situation context
    pub context: AdjustmentContext<T>,

    /// Applied adjustment
    pub adjustment: PriorityLevel<T>,

    /// Resulting performance
    pub performance: T,

    /// Data timestamp
    pub timestamp: SystemTime,
}

/// Adjustment model
#[derive(Debug, Clone)]
pub struct AdjustmentModel<T: Float + Debug + Send + Sync + 'static> {
    /// Model identifier
    pub model_id: String,

    /// Model parameters
    pub parameters: HashMap<String, Array1<T>>,

    /// Model accuracy
    pub accuracy: T,

    /// Model applicability
    pub applicability: HashMap<String, T>,
}

/// Priority analytics system
#[derive(Debug)]
pub struct PriorityAnalytics<T: Float + Debug + Send + Sync + 'static> {
    /// Analytics algorithms
    analytics_algorithms: Vec<Box<dyn PriorityAnalyticsAlgorithm<T>>>,

    /// Analytics results
    analytics_results: HashMap<String, AnalyticsResult<T>>,

    /// Real-time metrics
    real_time_metrics: HashMap<String, T>,

    /// Analytics dashboard
    dashboard: AnalyticsDashboard<T>,
}

/// Priority analytics algorithm trait
pub trait PriorityAnalyticsAlgorithm<T: Float + Debug + Send + Sync + 'static>:
    Send + Sync + std::fmt::Debug
{
    /// Perform analytics on priority data
    fn analyze(&self, data: &PriorityAnalyticsData<T>) -> Result<AnalyticsResult<T>>;

    /// Get algorithm name
    fn name(&self) -> &str;
}

/// Priority analytics data
#[derive(Debug)]
pub struct PriorityAnalyticsData<T: Float + Debug + Send + Sync + 'static> {
    /// Priority history
    pub priority_history: Vec<PriorityChangeRecord<T>>,

    /// Performance metrics
    pub performance_metrics: HashMap<String, Vec<T>>,

    /// System metrics
    pub system_metrics: HashMap<String, Vec<T>>,

    /// Time series data
    pub time_series: Vec<(SystemTime, HashMap<String, T>)>,
}

/// Analytics result
#[derive(Debug, Clone)]
pub struct AnalyticsResult<T: Float + Debug + Send + Sync + 'static> {
    /// Result type
    pub result_type: String,

    /// Key findings
    pub findings: HashMap<String, T>,

    /// Visualizations
    pub visualizations: Vec<Visualization<T>>,

    /// Recommendations
    pub recommendations: Vec<String>,

    /// Confidence level
    pub confidence: T,
}

/// Visualization data
#[derive(Debug, Clone)]
pub struct Visualization<T: Float + Debug + Send + Sync + 'static> {
    /// Visualization type
    pub viz_type: String,

    /// Data points
    pub data_points: Vec<(T, T)>,

    /// Labels
    pub labels: Vec<String>,

    /// Metadata
    pub metadata: HashMap<String, String>,
}

/// Analytics dashboard
#[derive(Debug)]
pub struct AnalyticsDashboard<T: Float + Debug + Send + Sync + 'static> {
    /// Dashboard widgets
    widgets: Vec<DashboardWidget<T>>,

    /// Refresh intervals
    refresh_intervals: HashMap<String, Duration>,

    /// Dashboard configuration
    config: DashboardConfig,
}

/// Dashboard widget
#[derive(Debug)]
pub struct DashboardWidget<T: Float + Debug + Send + Sync + 'static> {
    /// Widget identifier
    pub widget_id: String,

    /// Widget type
    pub widget_type: String,

    /// Widget data
    pub data: HashMap<String, T>,

    /// Widget configuration
    pub config: HashMap<String, String>,
}

/// Dashboard configuration
#[derive(Debug, Clone)]
pub struct DashboardConfig {
    /// Update frequency
    pub update_frequency: Duration,

    /// Display options
    pub display_options: HashMap<String, String>,

    /// Widget layout
    pub layout: Vec<String>,
}

/// Queue statistics
#[derive(Debug, Clone)]
pub struct QueueStatistics<T: Float + Debug + Send + Sync + 'static> {
    /// Total items processed
    pub total_processed: usize,

    /// Average queue length
    pub average_length: T,

    /// Average wait time
    pub average_wait_time: Duration,

    /// Throughput
    pub throughput: T,

    /// Queue efficiency
    pub efficiency: T,
}

/// Queue configuration
#[derive(Debug, Clone)]
pub struct QueueConfig<T: Float + Debug + Send + Sync + 'static> {
    /// Maximum queue size
    pub max_size: Option<usize>,

    /// Priority update frequency
    pub update_frequency: Duration,

    /// Queue maintenance interval
    pub maintenance_interval: Duration,

    /// Performance threshold
    pub performance_threshold: T,
}

/// Priority manager configuration
#[derive(Debug, Clone)]
pub struct PriorityManagerConfig<T: Float + Debug + Send + Sync + 'static> {
    /// Default priority weights
    pub default_weights: PriorityWeights<T>,

    /// Update strategy selection
    pub strategy_selection: StrategySelection,

    /// Analytics configuration
    pub analytics_config: AnalyticsConfig<T>,

    /// History retention policy
    pub history_retention: HistoryRetentionPolicy,

    /// Performance thresholds
    pub performance_thresholds: HashMap<String, T>,
}

/// Strategy selection method
#[derive(Debug, Clone, Copy)]
pub enum StrategySelection {
    /// Fixed strategy
    Fixed,

    /// Performance-based selection
    PerformanceBased,

    /// Adaptive selection
    Adaptive,

    /// Learning-based selection
    LearningBased,
}

/// Analytics configuration
#[derive(Debug, Clone)]
pub struct AnalyticsConfig<T: Float + Debug + Send + Sync + 'static> {
    /// Enable real-time analytics
    pub enable_real_time: bool,

    /// Analytics frequency
    pub analytics_frequency: Duration,

    /// Analytics algorithms to use
    pub algorithms: Vec<String>,

    /// Performance thresholds
    pub thresholds: HashMap<String, T>,
}

/// History retention policy
#[derive(Debug, Clone)]
pub struct HistoryRetentionPolicy {
    /// Maximum history size
    pub max_history_size: usize,

    /// Retention duration
    pub retention_duration: Duration,

    /// Compression strategy
    pub compression_strategy: CompressionStrategy,
}

/// History compression strategies
#[derive(Debug, Clone, Copy)]
pub enum CompressionStrategy {
    /// No compression
    None,

    /// Time-based sampling
    TimeBased,

    /// Importance-based sampling
    ImportanceBased,

    /// Statistical compression
    Statistical,
}

/// History configuration
#[derive(Debug, Clone)]
pub struct HistoryConfig {
    /// Maximum records to keep
    pub max_records: usize,

    /// Retention period
    pub retention_period: Duration,

    /// Sampling strategy
    pub sampling_strategy: SamplingStrategy,
}

/// Sampling strategies for history
#[derive(Debug, Clone, Copy)]
pub enum SamplingStrategy {
    /// Keep all records
    All,

    /// Uniform sampling
    Uniform,

    /// Stratified sampling
    Stratified,

    /// Importance sampling
    Importance,
}

/// Trend analysis configuration
#[derive(Debug, Clone)]
pub struct TrendAnalysisConfig<T: Float + Debug + Send + Sync + 'static> {
    /// Analysis window size
    pub window_size: Duration,

    /// Trend detection sensitivity
    pub sensitivity: T,

    /// Prediction horizon
    pub prediction_horizon: Duration,

    /// Confidence threshold
    pub confidence_threshold: T,
}

/// Priority manager statistics
#[derive(Debug, Clone)]
pub struct PriorityManagerStatistics<T: Float + Debug + Send + Sync + 'static> {
    /// Total priority updates
    pub total_updates: usize,

    /// Average update latency
    pub average_update_latency: Duration,

    /// Priority accuracy
    pub accuracy: T,

    /// System effectiveness
    pub effectiveness: T,

    /// Learning performance
    pub learning_performance: T,
}

// Implementation for the core structs follows the same pattern as previous modules
// Due to length constraints, showing key implementations

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PriorityManager<T> {
    /// Create new priority manager
    pub fn new(config: PriorityManagerConfig<T>) -> Result<Self> {
        Ok(Self {
            priority_queues: HashMap::new(),
            update_strategies: HashMap::new(),
            calculation_algorithms: HashMap::new(),
            current_update_strategy: "default".to_string(),
            priority_history: PriorityHistoryTracker::new()?,
            adjustment_controller: DynamicAdjustmentController::new()?,
            analytics: PriorityAnalytics::new()?,
            config,
            stats: PriorityManagerStatistics::default(),
        })
    }

    /// Add task to priority queue
    pub fn add_task(
        &mut self,
        task_id: String,
        priority: PriorityLevel<T>,
        queue_name: &str,
    ) -> Result<()> {
        let queue = self
            .priority_queues
            .entry(queue_name.to_string())
            .or_insert_with(|| PriorityQueue::new());

        let item = PriorityItem {
            task_id,
            priority,
            metadata: HashMap::new(),
            created_at: SystemTime::now(),
            updated_at: SystemTime::now(),
            version: 1,
        };

        queue.push(item)?;
        Ok(())
    }

    /// Get next highest priority task
    pub fn get_next_task(&mut self, queue_name: &str) -> Option<PriorityItem<T>> {
        self.priority_queues.get_mut(queue_name)?.pop()
    }

    /// Update priorities for all tasks
    pub fn update_priorities(&mut self, context: PriorityUpdateContext<T>) -> Result<()> {
        if let Some(strategy) = self
            .update_strategies
            .get_mut(&self.current_update_strategy)
        {
            for queue in self.priority_queues.values_mut() {
                let mut items = queue.drain();
                strategy.update_priorities(&mut items, &context)?;
                for item in items {
                    queue.push(item)?;
                }
            }
        }

        self.stats.total_updates += 1;
        Ok(())
    }

    /// Get manager statistics
    pub fn get_statistics(&self) -> &PriorityManagerStatistics<T> {
        &self.stats
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> Default for PriorityQueue<T> {
    fn default() -> Self {
        Self::new()
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PriorityQueue<T> {
    pub fn new() -> Self {
        Self {
            primary_queue: BinaryHeap::new(),
            secondary_queues: HashMap::new(),
            capacity_limit: None,
            queue_stats: QueueStatistics::default(),
            config: QueueConfig::default(),
        }
    }

    pub fn push(&mut self, item: PriorityItem<T>) -> Result<()> {
        if let Some(limit) = self.capacity_limit {
            if self.primary_queue.len() >= limit {
                return Err(OptimError::ResourceUnavailable(
                    "Queue capacity exceeded".to_string(),
                ));
            }
        }

        self.primary_queue.push(item);
        self.queue_stats.total_processed += 1;
        Ok(())
    }

    pub fn pop(&mut self) -> Option<PriorityItem<T>> {
        self.primary_queue.pop()
    }

    pub fn drain(&mut self) -> Vec<PriorityItem<T>> {
        self.primary_queue.drain().collect()
    }

    pub fn len(&self) -> usize {
        self.primary_queue.len()
    }

    pub fn is_empty(&self) -> bool {
        self.primary_queue.is_empty()
    }
}

// Implement Ord, PartialOrd, Eq, PartialEq for PriorityItem to work with BinaryHeap
impl<T: Float + Debug + Send + Sync + 'static> PartialEq for PriorityItem<T> {
    fn eq(&self, other: &Self) -> bool {
        self.priority.composite_score == other.priority.composite_score
    }
}

impl<T: Float + Debug + Send + Sync + 'static> Eq for PriorityItem<T> {}

impl<T: Float + Debug + Send + Sync + 'static> PartialOrd for PriorityItem<T> {
    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
        Some(self.cmp(other))
    }
}

impl<T: Float + Debug + Send + Sync + 'static> Ord for PriorityItem<T> {
    fn cmp(&self, other: &Self) -> Ordering {
        self.partial_cmp(other).unwrap_or(Ordering::Equal)
    }
}

// Helper struct implementations with simplified logic
impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PriorityHistoryTracker<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            change_history: VecDeque::new(),
            statistical_summaries: HashMap::new(),
            trend_analyzer: PriorityTrendAnalyzer::new()?,
            change_detectors: Vec::new(),
            config: HistoryConfig::default(),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PriorityTrendAnalyzer<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            trend_algorithms: Vec::new(),
            current_trends: HashMap::new(),
            predictions: HashMap::new(),
            config: TrendAnalysisConfig::default(),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> DynamicAdjustmentController<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            adjustment_algorithms: HashMap::new(),
            current_strategy: "default".to_string(),
            adjustment_history: VecDeque::new(),
            feedback_processor: FeedbackProcessor::new()?,
            learning_system: AdjustmentLearningSystem::new()?,
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> FeedbackProcessor<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            feedback_collector: FeedbackCollector::new()?,
            analysis_engine: FeedbackAnalysisEngine::new()?,
            integration_system: FeedbackIntegrationSystem::new()?,
            feedback_history: VecDeque::new(),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> FeedbackCollector<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            collection_strategies: Vec::new(),
            collection_frequency: Duration::from_secs(60),
            filters: Vec::new(),
            feedback_buffer: VecDeque::new(),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> FeedbackAnalysisEngine<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            analysis_algorithms: Vec::new(),
            analysis_results: HashMap::new(),
            pattern_recognition: PatternRecognitionSystem::new()?,
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PatternRecognitionSystem<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            pattern_detectors: Vec::new(),
            recognized_patterns: HashMap::new(),
            pattern_library: PatternLibrary::new()?,
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PatternLibrary<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            known_patterns: HashMap::new(),
            matching_algorithms: Vec::new(),
            learning_system: PatternLearningSystem::new()?,
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PatternLearningSystem<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            learning_algorithms: Vec::new(),
            learning_data: VecDeque::new(),
            learned_patterns: HashMap::new(),
            effectiveness: T::from(0.5).unwrap_or_else(|| T::zero()),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> FeedbackIntegrationSystem<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            integration_strategies: Vec::new(),
            integration_results: HashMap::new(),
            effectiveness: T::from(0.5).unwrap_or_else(|| T::zero()),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> AdjustmentLearningSystem<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            learning_algorithms: Vec::new(),
            learning_data: VecDeque::new(),
            learned_models: HashMap::new(),
            effectiveness: T::from(0.5).unwrap_or_else(|| T::zero()),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static + Default + Clone> PriorityAnalytics<T> {
    pub fn new() -> Result<Self> {
        Ok(Self {
            analytics_algorithms: Vec::new(),
            analytics_results: HashMap::new(),
            real_time_metrics: HashMap::new(),
            dashboard: AnalyticsDashboard::new(),
        })
    }
}

impl<T: Float + Debug + Send + Sync + 'static> Default for AnalyticsDashboard<T> {
    fn default() -> Self {
        Self::new()
    }
}

impl<T: Float + Debug + Send + Sync + 'static> AnalyticsDashboard<T> {
    pub fn new() -> Self {
        Self {
            widgets: Vec::new(),
            refresh_intervals: HashMap::new(),
            config: DashboardConfig::default(),
        }
    }
}

// Default implementations
impl<T: Float + Debug + Default + Send + Sync> Default for PriorityWeights<T> {
    fn default() -> Self {
        Self {
            base_weight: T::from(0.2).unwrap_or_else(|| T::zero()),
            urgency_weight: T::from(0.25).unwrap_or_else(|| T::zero()),
            importance_weight: T::from(0.2).unwrap_or_else(|| T::zero()),
            efficiency_weight: T::from(0.15).unwrap_or_else(|| T::zero()),
            cost_weight: T::from(0.1).unwrap_or_else(|| T::zero()),
            quality_weight: T::from(0.05).unwrap_or_else(|| T::zero()),
            deadline_weight: T::from(0.05).unwrap_or_else(|| T::zero()),
            dynamic_weights: HashMap::new(),
        }
    }
}

impl<T: Float + Debug + Default + Send + Sync> Default for QueueStatistics<T> {
    fn default() -> Self {
        Self {
            total_processed: 0,
            average_length: T::zero(),
            average_wait_time: Duration::from_secs(0),
            throughput: T::zero(),
            efficiency: T::from(0.5).unwrap_or_else(|| T::zero()),
        }
    }
}

impl<T: Float + Debug + Default + Send + Sync> Default for QueueConfig<T> {
    fn default() -> Self {
        Self {
            max_size: Some(10000),
            update_frequency: Duration::from_secs(10),
            maintenance_interval: Duration::from_secs(60),
            performance_threshold: T::from(0.8).unwrap_or_else(|| T::zero()),
        }
    }
}

impl Default for HistoryConfig {
    fn default() -> Self {
        Self {
            max_records: 10000,
            retention_period: Duration::from_secs(86400 * 7), // 1 week
            sampling_strategy: SamplingStrategy::Uniform,
        }
    }
}

impl<T: Float + Debug + Default + Send + Sync> Default for TrendAnalysisConfig<T> {
    fn default() -> Self {
        Self {
            window_size: Duration::from_secs(3600), // 1 hour
            sensitivity: T::from(0.1).unwrap_or_else(|| T::zero()),
            prediction_horizon: Duration::from_secs(1800), // 30 minutes
            confidence_threshold: T::from(0.7).unwrap_or_else(|| T::zero()),
        }
    }
}

impl Default for DashboardConfig {
    fn default() -> Self {
        Self {
            update_frequency: Duration::from_secs(30),
            display_options: HashMap::new(),
            layout: Vec::new(),
        }
    }
}

impl<T: Float + Debug + Default + Send + Sync> Default for PriorityManagerStatistics<T> {
    fn default() -> Self {
        Self {
            total_updates: 0,
            average_update_latency: Duration::from_millis(5),
            accuracy: T::from(0.8).unwrap_or_else(|| T::zero()),
            effectiveness: T::from(0.75).unwrap_or_else(|| T::zero()),
            learning_performance: T::from(0.6).unwrap_or_else(|| T::zero()),
        }
    }
}

/// Static priority update strategy that doesn't change priorities
#[derive(Debug, Clone)]
pub struct StaticPriorityStrategy;

impl<T: Float + Debug + Send + Sync + 'static> PriorityUpdateStrategy<T>
    for StaticPriorityStrategy
{
    fn update_priorities(
        &mut self,
        _items: &mut [PriorityItem<T>],
        _context: &PriorityUpdateContext<T>,
    ) -> Result<()> {
        // Static strategy doesn't update priorities
        Ok(())
    }

    fn name(&self) -> &str {
        "Static"
    }

    fn get_metrics(&self) -> HashMap<String, T> {
        HashMap::new()
    }

    fn configure(&mut self, _config: &HashMap<String, T>) -> Result<()> {
        Ok(())
    }
}
